Added methods for retrieving unique k-best lists from hypergraphs

3 files changed, 8646 insertions, 9296 deletions

diff --git a/python/cdec/_cdec.cpp b/python/cdec/_cdec.cpp
index 3ffa2dd5..03b22bb1 100644
--- a/python/cdec/_cdec.cpp
+++ b/python/cdec/_cdec.cpp
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.20.1 on Mon Apr  7 01:23:34 2014 */
+/* Generated by Cython 0.19.1 on Sat May 17 14:41:25 2014 */
 
 #define PY_SSIZE_T_CLEAN
 #ifndef CYTHON_USE_PYLONG_INTERNALS
@@ -19,7 +19,6 @@
 #elif PY_VERSION_HEX < 0x02040000
     #error Cython requires Python 2.4+.
 #else
-#define CYTHON_ABI "0_20_1"
 #include <stddef.h> /* For offsetof */
 #ifndef offsetof
 #define offsetof(type, member) ( (size_t) & ((type*)0) -> member )
@@ -54,9 +53,6 @@
 #define CYTHON_COMPILING_IN_PYPY 0
 #define CYTHON_COMPILING_IN_CPYTHON 1
 #endif
-#if CYTHON_COMPILING_IN_PYPY
-#define Py_OptimizeFlag 0
-#endif
 #if PY_VERSION_HEX < 0x02050000
   typedef int Py_ssize_t;
   #define PY_SSIZE_T_MAX INT_MAX
@@ -64,7 +60,7 @@
   #define PY_FORMAT_SIZE_T ""
   #define CYTHON_FORMAT_SSIZE_T ""
   #define PyInt_FromSsize_t(z) PyInt_FromLong(z)
-  #define PyInt_AsSsize_t(o)   __Pyx_PyInt_As_int(o)
+  #define PyInt_AsSsize_t(o)   __Pyx_PyInt_AsInt(o)
   #define PyNumber_Index(o)    ((PyNumber_Check(o) && !PyFloat_Check(o)) ? PyNumber_Int(o) : \
                                 (PyErr_Format(PyExc_TypeError, \
                                               "expected index value, got %.200s", Py_TYPE(o)->tp_name), \
@@ -116,15 +112,13 @@
 #if PY_MAJOR_VERSION < 3
   #define __Pyx_BUILTIN_MODULE_NAME "__builtin__"
   #define __Pyx_PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos) \
-          PyCode_New(a+k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)
-  #define __Pyx_DefaultClassType PyClass_Type
+          PyCode_New(a, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)
 #else
   #define __Pyx_BUILTIN_MODULE_NAME "builtins"
   #define __Pyx_PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos) \
           PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)
-  #define __Pyx_DefaultClassType PyType_Type
 #endif
-#if PY_VERSION_HEX < 0x02060000
+#if PY_MAJOR_VERSION < 3 && PY_MINOR_VERSION < 6
   #define PyUnicode_FromString(s) PyUnicode_Decode(s, strlen(s), "UTF-8", "strict")
 #endif
 #if PY_MAJOR_VERSION >= 3
@@ -137,44 +131,19 @@
 #if PY_VERSION_HEX < 0x02060000
   #define Py_TPFLAGS_HAVE_VERSION_TAG 0
 #endif
-#if PY_VERSION_HEX < 0x02060000 && !defined(Py_TPFLAGS_IS_ABSTRACT)
-  #define Py_TPFLAGS_IS_ABSTRACT 0
-#endif
-#if PY_VERSION_HEX < 0x030400a1 && !defined(Py_TPFLAGS_HAVE_FINALIZE)
-  #define Py_TPFLAGS_HAVE_FINALIZE 0
-#endif
 #if PY_VERSION_HEX > 0x03030000 && defined(PyUnicode_KIND)
   #define CYTHON_PEP393_ENABLED 1
   #define __Pyx_PyUnicode_READY(op)       (likely(PyUnicode_IS_READY(op)) ? \
                                               0 : _PyUnicode_Ready((PyObject *)(op)))
   #define __Pyx_PyUnicode_GET_LENGTH(u)   PyUnicode_GET_LENGTH(u)
   #define __Pyx_PyUnicode_READ_CHAR(u, i) PyUnicode_READ_CHAR(u, i)
-  #define __Pyx_PyUnicode_KIND(u)         PyUnicode_KIND(u)
-  #define __Pyx_PyUnicode_DATA(u)         PyUnicode_DATA(u)
   #define __Pyx_PyUnicode_READ(k, d, i)   PyUnicode_READ(k, d, i)
 #else
   #define CYTHON_PEP393_ENABLED 0
   #define __Pyx_PyUnicode_READY(op)       (0)
   #define __Pyx_PyUnicode_GET_LENGTH(u)   PyUnicode_GET_SIZE(u)
   #define __Pyx_PyUnicode_READ_CHAR(u, i) ((Py_UCS4)(PyUnicode_AS_UNICODE(u)[i]))
-  #define __Pyx_PyUnicode_KIND(u)         (sizeof(Py_UNICODE))
-  #define __Pyx_PyUnicode_DATA(u)         ((void*)PyUnicode_AS_UNICODE(u))
-  #define __Pyx_PyUnicode_READ(k, d, i)   ((void)(k), (Py_UCS4)(((Py_UNICODE*)d)[i]))
-#endif
-#if CYTHON_COMPILING_IN_PYPY
-  #define __Pyx_PyUnicode_Concat(a, b)      PyNumber_Add(a, b)
-  #define __Pyx_PyUnicode_ConcatSafe(a, b)  PyNumber_Add(a, b)
-#else
-  #define __Pyx_PyUnicode_Concat(a, b)      PyUnicode_Concat(a, b)
-  #define __Pyx_PyUnicode_ConcatSafe(a, b)  ((unlikely((a) == Py_None) || unlikely((b) == Py_None)) ? \
-      PyNumber_Add(a, b) : __Pyx_PyUnicode_Concat(a, b))
-#endif
-#define __Pyx_PyString_FormatSafe(a, b)  ((unlikely((a) == Py_None)) ? PyNumber_Remainder(a, b) : __Pyx_PyString_Format(a, b))
-#define __Pyx_PyUnicode_FormatSafe(a, b)  ((unlikely((a) == Py_None)) ? PyNumber_Remainder(a, b) : PyUnicode_Format(a, b))
-#if PY_MAJOR_VERSION >= 3
-  #define __Pyx_PyString_Format(a, b)  PyUnicode_Format(a, b)
-#else
-  #define __Pyx_PyString_Format(a, b)  PyString_Format(a, b)
+  #define __Pyx_PyUnicode_READ(k, d, i)   ((k=k), (Py_UCS4)(((Py_UNICODE*)d)[i]))
 #endif
 #if PY_MAJOR_VERSION >= 3
   #define PyBaseString_Type            PyUnicode_Type
@@ -207,7 +176,7 @@
 #else
   #define __Pyx_PyBaseString_Check(obj) (PyString_CheckExact(obj) || PyUnicode_CheckExact(obj) || \
                                          PyString_Check(obj) || PyUnicode_Check(obj))
-  #define __Pyx_PyBaseString_CheckExact(obj) (PyString_CheckExact(obj) || PyUnicode_CheckExact(obj))
+  #define __Pyx_PyBaseString_CheckExact(obj) (Py_TYPE(obj) == &PyBaseString_Type)
 #endif
 #if PY_VERSION_HEX < 0x02060000
   #define PySet_Check(obj)             PyObject_TypeCheck(obj, &PySet_Type)
@@ -232,12 +201,11 @@
   #define PyInt_AsSsize_t              PyLong_AsSsize_t
   #define PyInt_AsUnsignedLongMask     PyLong_AsUnsignedLongMask
   #define PyInt_AsUnsignedLongLongMask PyLong_AsUnsignedLongLongMask
-  #define PyNumber_Int                 PyNumber_Long
 #endif
 #if PY_MAJOR_VERSION >= 3
   #define PyBoolObject                 PyLongObject
 #endif
-#if PY_VERSION_HEX < 0x030200A4
+#if PY_VERSION_HEX < 0x03020000
   typedef long Py_hash_t;
   #define __Pyx_PyInt_FromHash_t PyInt_FromLong
   #define __Pyx_PyInt_AsHash_t   PyInt_AsLong
@@ -296,7 +264,7 @@
 #ifndef CYTHON_RESTRICT
   #if defined(__GNUC__)
     #define CYTHON_RESTRICT __restrict__
-  #elif defined(_MSC_VER) && _MSC_VER >= 1400
+  #elif defined(_MSC_VER)
     #define CYTHON_RESTRICT __restrict
   #elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
     #define CYTHON_RESTRICT restrict
@@ -408,20 +376,8 @@ typedef struct {PyObject **p; char *s; const Py_ssize_t n; const char* encoding;
 #define __PYX_DEFAULT_STRING_ENCODING ""
 #define __Pyx_PyObject_FromString __Pyx_PyBytes_FromString
 #define __Pyx_PyObject_FromStringAndSize __Pyx_PyBytes_FromStringAndSize
-#define __Pyx_fits_Py_ssize_t(v, type, is_signed)  (    \
-    (sizeof(type) < sizeof(Py_ssize_t))  ||             \
-    (sizeof(type) > sizeof(Py_ssize_t) &&               \
-          likely(v < (type)PY_SSIZE_T_MAX ||            \
-                 v == (type)PY_SSIZE_T_MAX)  &&         \
-          (!is_signed || likely(v > (type)PY_SSIZE_T_MIN ||       \
-                                v == (type)PY_SSIZE_T_MIN)))  ||  \
-    (sizeof(type) == sizeof(Py_ssize_t) &&              \
-          (is_signed || likely(v < (type)PY_SSIZE_T_MAX ||        \
-                               v == (type)PY_SSIZE_T_MAX)))  )
 static CYTHON_INLINE char* __Pyx_PyObject_AsString(PyObject*);
 static CYTHON_INLINE char* __Pyx_PyObject_AsStringAndSize(PyObject*, Py_ssize_t* length);
-#define __Pyx_PyByteArray_FromString(s) PyByteArray_FromStringAndSize((const char*)s, strlen((const char*)s))
-#define __Pyx_PyByteArray_FromStringAndSize(s, l) PyByteArray_FromStringAndSize((const char*)s, l)
 #define __Pyx_PyBytes_FromString        PyBytes_FromString
 #define __Pyx_PyBytes_FromStringAndSize PyBytes_FromStringAndSize
 static CYTHON_INLINE PyObject* __Pyx_PyUnicode_FromString(char*);
@@ -432,11 +388,9 @@ static CYTHON_INLINE PyObject* __Pyx_PyUnicode_FromString(char*);
     #define __Pyx_PyStr_FromString        __Pyx_PyUnicode_FromString
     #define __Pyx_PyStr_FromStringAndSize __Pyx_PyUnicode_FromStringAndSize
 #endif
-#define __Pyx_PyObject_AsSString(s)    ((signed char*) __Pyx_PyObject_AsString(s))
 #define __Pyx_PyObject_AsUString(s)    ((unsigned char*) __Pyx_PyObject_AsString(s))
 #define __Pyx_PyObject_FromUString(s)  __Pyx_PyObject_FromString((char*)s)
 #define __Pyx_PyBytes_FromUString(s)   __Pyx_PyBytes_FromString((char*)s)
-#define __Pyx_PyByteArray_FromUString(s)   __Pyx_PyByteArray_FromString((char*)s)
 #define __Pyx_PyStr_FromUString(s)     __Pyx_PyStr_FromString((char*)s)
 #define __Pyx_PyUnicode_FromUString(s) __Pyx_PyUnicode_FromString((char*)s)
 #if PY_MAJOR_VERSION < 3
@@ -458,6 +412,7 @@ static CYTHON_INLINE int __Pyx_PyObject_IsTrue(PyObject*);
 static CYTHON_INLINE PyObject* __Pyx_PyNumber_Int(PyObject* x);
 static CYTHON_INLINE Py_ssize_t __Pyx_PyIndex_AsSsize_t(PyObject*);
 static CYTHON_INLINE PyObject * __Pyx_PyInt_FromSize_t(size_t);
+static CYTHON_INLINE size_t __Pyx_PyInt_AsSize_t(PyObject*);
 #if CYTHON_COMPILING_IN_CPYTHON
 #define __pyx_PyFloat_AsDouble(x) (PyFloat_CheckExact(x) ? PyFloat_AS_DOUBLE(x) : PyFloat_AsDouble(x))
 #else
@@ -466,7 +421,7 @@ static CYTHON_INLINE PyObject * __Pyx_PyInt_FromSize_t(size_t);
 #define __pyx_PyFloat_AsFloat(x) ((float) __pyx_PyFloat_AsDouble(x))
 #if PY_MAJOR_VERSION < 3 && __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
 static int __Pyx_sys_getdefaultencoding_not_ascii;
-static int __Pyx_init_sys_getdefaultencoding_params(void) {
+static int __Pyx_init_sys_getdefaultencoding_params() {
     PyObject* sys = NULL;
     PyObject* default_encoding = NULL;
     PyObject* ascii_chars_u = NULL;
@@ -491,7 +446,7 @@ static int __Pyx_init_sys_getdefaultencoding_params(void) {
         if (ascii_chars_b == NULL || strncmp(ascii_chars, PyBytes_AS_STRING(ascii_chars_b), 128) != 0) {
             PyErr_Format(
                 PyExc_ValueError,
-                "This module compiled with c_string_encoding=ascii, but default encoding '%.200s' is not a superset of ascii.",
+                "This module compiled with c_string_encoding=ascii, but default encoding '%s' is not a superset of ascii.",
                 default_encoding_c);
             goto bad;
         }
@@ -515,7 +470,7 @@ bad:
 #define __Pyx_PyUnicode_FromStringAndSize(c_str, size) PyUnicode_Decode(c_str, size, __PYX_DEFAULT_STRING_ENCODING, NULL)
 #if __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT
 static char* __PYX_DEFAULT_STRING_ENCODING;
-static int __Pyx_init_sys_getdefaultencoding_params(void) {
+static int __Pyx_init_sys_getdefaultencoding_params() {
     PyObject* sys = NULL;
     PyObject* default_encoding = NULL;
     char* default_encoding_c;
@@ -570,61 +525,63 @@ static const char *__pyx_f[] = {
   "hypergraph.pxi",
   "lattice.pxi",
   "mteval.pxi",
-  "stringsource",
   "_sa.pxd",
 };
 
 /*--- Type declarations ---*/
-struct __pyx_obj_4cdec_2sa_3_sa_FloatList;
-struct __pyx_obj_4cdec_2sa_3_sa_IntList;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___iter__;
 struct __pyx_obj_4cdec_2sa_3_sa_FeatureVector;
-struct __pyx_obj_4cdec_2sa_3_sa_Phrase;
-struct __pyx_obj_4cdec_2sa_3_sa_Rule;
 struct __pyx_obj_4cdec_5_cdec_DenseVector;
+struct __pyx_obj_4cdec_5_cdec_SufficientStats;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23_lines;
+struct __pyx_obj_4cdec_5_cdec_TRule;
+struct __pyx_obj_4cdec_5_cdec_MRule;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__;
+struct __pyx_obj_4cdec_5_cdec_Metric;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest;
+struct __pyx_obj_4cdec_2sa_3_sa_IntList;
 struct __pyx_obj_4cdec_5_cdec_SparseVector;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_26__make_config;
 struct __pyx_obj_4cdec_5_cdec_NT;
+struct __pyx_obj_4cdec_5_cdec_Lattice;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees;
+struct __pyx_obj_4cdec_5_cdec_HypergraphEdge;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase;
+struct __pyx_obj_4cdec_2sa_3_sa_Rule;
+struct __pyx_obj_4cdec_5_cdec_Scorer;
+struct __pyx_obj_4cdec_5_cdec_HypergraphNode;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features;
 struct __pyx_obj_4cdec_5_cdec_NTRef;
-struct __pyx_obj_4cdec_5_cdec_TRule;
-struct __pyx_obj_4cdec_5_cdec_MRule;
 struct __pyx_obj_4cdec_5_cdec_Grammar;
-struct __pyx_obj_4cdec_5_cdec_TextGrammar;
 struct __pyx_obj_4cdec_5_cdec_Hypergraph;
-struct __pyx_obj_4cdec_5_cdec_HypergraphEdge;
-struct __pyx_obj_4cdec_5_cdec_HypergraphNode;
-struct __pyx_obj_4cdec_5_cdec_Lattice;
-struct __pyx_obj_4cdec_5_cdec_Candidate;
-struct __pyx_obj_4cdec_5_cdec_SufficientStats;
 struct __pyx_obj_4cdec_5_cdec_CandidateSet;
+struct __pyx_obj_4cdec_2sa_3_sa_FloatList;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_5___str__;
 struct __pyx_obj_4cdec_5_cdec_SegmentEvaluator;
-struct __pyx_obj_4cdec_5_cdec_Scorer;
-struct __pyx_obj_4cdec_5_cdec_Metric;
-struct __pyx_obj_4cdec_5_cdec_Decoder;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_28_genexpr;
 struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_5___str__;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__;
 struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_sample;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_sample_trees;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13___get__;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15___get__;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__;
+struct __pyx_obj_4cdec_2sa_3_sa_Phrase;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___get__;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19___get__;
+struct __pyx_obj_4cdec_5_cdec_TextGrammar;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__;
+struct __pyx_obj_4cdec_5_cdec_Decoder;
+struct __pyx_obj_4cdec_5_cdec_Candidate;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14_sample;
 struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___iter__;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19_todot;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20_lines;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23__make_config;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___init__;
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25_genexpr;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__;
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__;
 struct __pyx_opt_args_4cdec_5_cdec_as_str;
 
 /* "cdec/_cdec.pyx":6
@@ -639,37 +596,20 @@ struct __pyx_opt_args_4cdec_5_cdec_as_str {
   char *error_msg;
 };
 
-/* "cdec/sa/_sa.pxd":3
- * from libc.stdio cimport FILE
- * 
- * cdef class FloatList:             # <<<<<<<<<<<<<<
- *     cdef int size
- *     cdef int increment
- */
-struct __pyx_obj_4cdec_2sa_3_sa_FloatList {
-  PyObject_HEAD
-  struct __pyx_vtabstruct_4cdec_2sa_3_sa_FloatList *__pyx_vtab;
-  int size;
-  int increment;
-  int len;
-  float *arr;
-};
-
-
-/* "cdec/sa/_sa.pxd":12
- *     cdef void read_handle(self, FILE* f)
+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":44
+ *         return self.stats.size()
  * 
- * cdef class IntList:             # <<<<<<<<<<<<<<
- *     cdef int size
- *     cdef int increment
+ *     def __iter__(self):             # <<<<<<<<<<<<<<
+ *         for i in range(len(self)):
+ *             yield self[i]
  */
-struct __pyx_obj_4cdec_2sa_3_sa_IntList {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___iter__ {
   PyObject_HEAD
-  struct __pyx_vtabstruct_4cdec_2sa_3_sa_IntList *__pyx_vtab;
-  int size;
-  int increment;
-  int len;
-  int *arr;
+  PyObject *__pyx_v_i;
+  struct __pyx_obj_4cdec_5_cdec_SufficientStats *__pyx_v_self;
+  Py_ssize_t __pyx_t_0;
+  PyObject *__pyx_t_1;
+  PyObject *(*__pyx_t_2)(PyObject *);
 };
 
 
@@ -687,42 +627,7 @@ struct __pyx_obj_4cdec_2sa_3_sa_FeatureVector {
 };
 
 
-/* "cdec/sa/_sa.pxd":29
- *     cdef FloatList values
- * 
- * cdef class Phrase:             # <<<<<<<<<<<<<<
- *     cdef int *syms
- *     cdef int n, *varpos, n_vars
- */
-struct __pyx_obj_4cdec_2sa_3_sa_Phrase {
-  PyObject_HEAD
-  struct __pyx_vtabstruct_4cdec_2sa_3_sa_Phrase *__pyx_vtab;
-  int *syms;
-  int n;
-  int *varpos;
-  int n_vars;
-};
-
-
-/* "cdec/sa/_sa.pxd":35
- *     cdef public int chunklen(self, int k)
- * 
- * cdef class Rule:             # <<<<<<<<<<<<<<
- *     cdef int lhs
- *     cdef readonly Phrase f, e
- */
-struct __pyx_obj_4cdec_2sa_3_sa_Rule {
-  PyObject_HEAD
-  int lhs;
-  struct __pyx_obj_4cdec_2sa_3_sa_Phrase *f;
-  struct __pyx_obj_4cdec_2sa_3_sa_Phrase *e;
-  struct __pyx_obj_4cdec_2sa_3_sa_FeatureVector *scores;
-  int n_scores;
-  PyObject *word_alignments;
-};
-
-
-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":3
+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":3
  * from cython.operator cimport preincrement as pinc
  * 
  * cdef class DenseVector:             # <<<<<<<<<<<<<<
@@ -736,47 +641,44 @@ struct __pyx_obj_4cdec_5_cdec_DenseVector {
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":48
- *         return sparse
- * 
- * cdef class SparseVector:             # <<<<<<<<<<<<<<
- *     cdef FastSparseVector[weight_t]* vector
- * 
- */
-struct __pyx_obj_4cdec_5_cdec_SparseVector {
-  PyObject_HEAD
-  FastSparseVector<weight_t> *vector;
-};
-
-
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":8
- *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)
+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":26
+ *             return fmap
  * 
- * cdef class NT:             # <<<<<<<<<<<<<<
- *     cdef public bytes cat
- *     cdef public unsigned ref
+ * cdef class SufficientStats:             # <<<<<<<<<<<<<<
+ *     cdef mteval.SufficientStats* stats
+ *     cdef mteval.EvaluationMetric* metric
  */
-struct __pyx_obj_4cdec_5_cdec_NT {
+struct __pyx_obj_4cdec_5_cdec_SufficientStats {
   PyObject_HEAD
-  PyObject *cat;
-  unsigned int ref;
+  SufficientStats *stats;
+  EvaluationMetric *metric;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":21
- *         return '[%s]' % self.cat
- * 
- * cdef class NTRef:             # <<<<<<<<<<<<<<
- *     cdef public unsigned ref
- *     def __init__(self, unsigned ref):
+/* "/usr0/home/austinma/git/cdec/python/cdec/lattice.pxi":63
+ *     def todot(self):
+ *         """lattice.todot() -> Representation of the lattice in GraphViz dot format."""
+ *         def lines():             # <<<<<<<<<<<<<<
+ *             yield 'digraph lattice {'
+ *             yield 'rankdir = LR;'
  */
-struct __pyx_obj_4cdec_5_cdec_NTRef {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23_lines {
   PyObject_HEAD
-  unsigned int ref;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot *__pyx_outer_scope;
+  PyObject *__pyx_v_delta;
+  PyObject *__pyx_v_i;
+  PyObject *__pyx_v_label;
+  PyObject *__pyx_v_weight;
+  Py_ssize_t __pyx_t_0;
+  PyObject *__pyx_t_1;
+  PyObject *(*__pyx_t_2)(PyObject *);
+  PyObject *__pyx_t_3;
+  Py_ssize_t __pyx_t_4;
+  PyObject *(*__pyx_t_5)(PyObject *);
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":49
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":49
  *     return TRule(lhs, f, e, scores, a)
  * 
  * cdef class TRule:             # <<<<<<<<<<<<<<
@@ -789,7 +691,7 @@ struct __pyx_obj_4cdec_5_cdec_TRule {
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":183
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":183
  *                 _phrase(self.f), _phrase(self.e), scores)
  * 
  * cdef class MRule(TRule):             # <<<<<<<<<<<<<<
@@ -801,78 +703,135 @@ struct __pyx_obj_4cdec_5_cdec_MRule {
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":199
- *         super(MRule, self).__init__(lhs, rhs, e, scores, None)
+/* "cdec/_cdec.pyx":47
+ *     cdef DenseVector weights
  * 
- * cdef class Grammar:             # <<<<<<<<<<<<<<
- *     cdef shared_ptr[grammar.Grammar]* grammar
+ *     def __init__(self, config_str=None, **config):             # <<<<<<<<<<<<<<
+ *         """Decoder('formalism = scfg') -> initialize from configuration string
+ *         Decoder(formalism='scfg') -> initialize from named parameters
+ */
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__ {
+  PyObject_HEAD
+  PyObject *__pyx_v_config;
+};
+
+
+/* "/usr0/home/austinma/git/cdec/python/cdec/lattice.pxi":56
+ *         return unicode(str(self), 'utf8')
  * 
+ *     def __iter__(self):             # <<<<<<<<<<<<<<
+ *         cdef unsigned i
+ *         for i in range(len(self)):
  */
-struct __pyx_obj_4cdec_5_cdec_Grammar {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ {
   PyObject_HEAD
-  boost::shared_ptr<Grammar> *grammar;
+  unsigned int __pyx_v_i;
+  struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self;
+  Py_ssize_t __pyx_t_0;
+  unsigned int __pyx_t_1;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":223
- *             self.grammar.get().SetGrammarName(name)
+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":176
+ *         out.fields[i] = ss[i]
  * 
- * cdef class TextGrammar(Grammar):             # <<<<<<<<<<<<<<
- *     def __init__(self, rules):
- *         """TextGrammar(rules) -> SCFG Grammar containing the rules."""
+ * cdef class Metric:             # <<<<<<<<<<<<<<
+ *     cdef Scorer scorer
+ *     def __cinit__(self):
  */
-struct __pyx_obj_4cdec_5_cdec_TextGrammar {
-  struct __pyx_obj_4cdec_5_cdec_Grammar __pyx_base;
+struct __pyx_obj_4cdec_5_cdec_Metric {
+  PyObject_HEAD
+  struct __pyx_obj_4cdec_5_cdec_Scorer *scorer;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":4
- * cimport kbest
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":97
+ *             del derivations
  * 
- * cdef class Hypergraph:             # <<<<<<<<<<<<<<
- *     cdef hypergraph.Hypergraph* hg
- *     cdef MT19937* rng
+ *     def unique_kbest(self, size):             # <<<<<<<<<<<<<<
+ *         """hg.kbest(size) -> List of unique k-best hypotheses in the hypergraph."""
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal, kbest.FilterUnique]* derivations = new kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal, kbest.FilterUnique](self.hg[0], size)
  */
-struct __pyx_obj_4cdec_5_cdec_Hypergraph {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest {
   PyObject_HEAD
-  struct __pyx_vtabstruct_4cdec_5_cdec_Hypergraph *__pyx_vtab;
-  Hypergraph *hg;
-  MT19937 *rng;
+  KBest::KBestDerivations<std::vector<WordID>,ESentenceTraversal,KBest::FilterUnique>::Derivation *__pyx_v_derivation;
+  KBest::KBestDerivations<std::vector<WordID>,ESentenceTraversal,KBest::FilterUnique> *__pyx_v_derivations;
+  unsigned int __pyx_v_k;
+  struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self;
+  PyObject *__pyx_v_size;
+  unsigned int __pyx_t_0;
+  long __pyx_t_1;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":196
- *         return vector
+/* "cdec/sa/_sa.pxd":12
+ *     cdef void read_handle(self, FILE* f)
  * 
- * cdef class HypergraphEdge:             # <<<<<<<<<<<<<<
- *     cdef hypergraph.Hypergraph* hg
- *     cdef hypergraph.HypergraphEdge* edge
+ * cdef class IntList:             # <<<<<<<<<<<<<<
+ *     cdef int size
+ *     cdef int increment
  */
-struct __pyx_obj_4cdec_5_cdec_HypergraphEdge {
+struct __pyx_obj_4cdec_2sa_3_sa_IntList {
   PyObject_HEAD
-  struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphEdge *__pyx_vtab;
-  Hypergraph *hg;
-  Hypergraph::Edge *edge;
-  struct __pyx_obj_4cdec_5_cdec_TRule *trule;
+  struct __pyx_vtabstruct_4cdec_2sa_3_sa_IntList *__pyx_vtab;
+  int size;
+  int increment;
+  int len;
+  int *arr;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":246
- *         raise NotImplemented('comparison not implemented for HypergraphEdge')
+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":48
+ *         return sparse
+ * 
+ * cdef class SparseVector:             # <<<<<<<<<<<<<<
+ *     cdef FastSparseVector[weight_t]* vector
  * 
- * cdef class HypergraphNode:             # <<<<<<<<<<<<<<
- *     cdef hypergraph.Hypergraph* hg
- *     cdef hypergraph.HypergraphNode* node
  */
-struct __pyx_obj_4cdec_5_cdec_HypergraphNode {
+struct __pyx_obj_4cdec_5_cdec_SparseVector {
   PyObject_HEAD
-  struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphNode *__pyx_vtab;
-  Hypergraph *hg;
-  Hypergraph::Node *node;
+  FastSparseVector<weight_t> *vector;
+};
+
+
+/* "cdec/_cdec.pyx":32
+ *     SetSilent(yn)
+ * 
+ * def _make_config(config):             # <<<<<<<<<<<<<<
+ *     for key, value in config.items():
+ *         if isinstance(value, dict):
+ */
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_26__make_config {
+  PyObject_HEAD
+  PyObject *__pyx_v_config;
+  PyObject *__pyx_v_info;
+  PyObject *__pyx_v_key;
+  PyObject *__pyx_v_name;
+  PyObject *__pyx_v_value;
+  PyObject *__pyx_t_0;
+  PyObject *__pyx_t_1;
+  Py_ssize_t __pyx_t_2;
+  PyObject *(*__pyx_t_3)(PyObject *);
+  Py_ssize_t __pyx_t_4;
+  PyObject *(*__pyx_t_5)(PyObject *);
+};
+
+
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":8
+ *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)
+ * 
+ * cdef class NT:             # <<<<<<<<<<<<<<
+ *     cdef public bytes cat
+ *     cdef public unsigned ref
+ */
+struct __pyx_obj_4cdec_5_cdec_NT {
+  PyObject_HEAD
+  PyObject *cat;
+  unsigned int ref;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":3
+/* "/usr0/home/austinma/git/cdec/python/cdec/lattice.pxi":3
  * cimport lattice
  * 
  * cdef class Lattice:             # <<<<<<<<<<<<<<
@@ -885,64 +844,72 @@ struct __pyx_obj_4cdec_5_cdec_Lattice {
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":12
- *         return stats
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":156
+ *             del hypos
  * 
- * cdef class Candidate:             # <<<<<<<<<<<<<<
- *     cdef mteval.const_Candidate* candidate
- *     cdef public float score
+ *     def sample_trees(self, unsigned n):             # <<<<<<<<<<<<<<
+ *        """hg.sample_trees(n) -> Sample of n trees from the hypergraph."""
+ *        cdef vector[string]* trees = new vector[string]()
  */
-struct __pyx_obj_4cdec_5_cdec_Candidate {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees {
   PyObject_HEAD
-  const training::Candidate *candidate;
-  float score;
+  unsigned int __pyx_v_k;
+  unsigned int __pyx_v_n;
+  struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self;
+  std::vector<std::string> *__pyx_v_trees;
+  size_t __pyx_t_0;
+  unsigned int __pyx_t_1;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":26
- *             return fmap
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":244
+ *         return vector
  * 
- * cdef class SufficientStats:             # <<<<<<<<<<<<<<
- *     cdef mteval.SufficientStats* stats
- *     cdef mteval.EvaluationMetric* metric
+ * cdef class HypergraphEdge:             # <<<<<<<<<<<<<<
+ *     cdef hypergraph.Hypergraph* hg
+ *     cdef hypergraph.HypergraphEdge* edge
  */
-struct __pyx_obj_4cdec_5_cdec_SufficientStats {
+struct __pyx_obj_4cdec_5_cdec_HypergraphEdge {
   PyObject_HEAD
-  SufficientStats *stats;
-  EvaluationMetric *metric;
+  struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphEdge *__pyx_vtab;
+  Hypergraph *hg;
+  Hypergraph::Edge *edge;
+  struct __pyx_obj_4cdec_5_cdec_TRule *trule;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":65
- *         return result
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":5
+ * import cdec.sa._sa as _sa
+ * 
+ * def _phrase(phrase):             # <<<<<<<<<<<<<<
+ *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)
  * 
- * cdef class CandidateSet:             # <<<<<<<<<<<<<<
- *     cdef shared_ptr[mteval.SegmentEvaluator]* scorer
- *     cdef mteval.EvaluationMetric* metric
  */
-struct __pyx_obj_4cdec_5_cdec_CandidateSet {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase {
   PyObject_HEAD
-  boost::shared_ptr<SegmentEvaluator> *scorer;
-  EvaluationMetric *metric;
-  training::CandidateSet *cs;
+  PyObject *__pyx_v_phrase;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":100
- *         self.cs.AddKBestCandidates(hypergraph.hg[0], k, self.scorer.get())
+/* "cdec/sa/_sa.pxd":35
+ *     cdef public int chunklen(self, int k)
  * 
- * cdef class SegmentEvaluator:             # <<<<<<<<<<<<<<
- *     cdef shared_ptr[mteval.SegmentEvaluator]* scorer
- *     cdef mteval.EvaluationMetric* metric
+ * cdef class Rule:             # <<<<<<<<<<<<<<
+ *     cdef int lhs
+ *     cdef readonly Phrase f, e
  */
-struct __pyx_obj_4cdec_5_cdec_SegmentEvaluator {
+struct __pyx_obj_4cdec_2sa_3_sa_Rule {
   PyObject_HEAD
-  boost::shared_ptr<SegmentEvaluator> *scorer;
-  EvaluationMetric *metric;
+  int lhs;
+  struct __pyx_obj_4cdec_2sa_3_sa_Phrase *f;
+  struct __pyx_obj_4cdec_2sa_3_sa_Phrase *e;
+  struct __pyx_obj_4cdec_2sa_3_sa_FeatureVector *scores;
+  int n_scores;
+  PyObject *word_alignments;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":121
+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":121
  *         return CandidateSet(self)
  * 
  * cdef class Scorer:             # <<<<<<<<<<<<<<
@@ -956,114 +923,151 @@ struct __pyx_obj_4cdec_5_cdec_Scorer {
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":176
- *         out.fields[i] = ss[i]
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":294
+ *         raise NotImplemented('comparison not implemented for HypergraphEdge')
  * 
- * cdef class Metric:             # <<<<<<<<<<<<<<
- *     cdef Scorer scorer
- *     def __cinit__(self):
+ * cdef class HypergraphNode:             # <<<<<<<<<<<<<<
+ *     cdef hypergraph.Hypergraph* hg
+ *     cdef hypergraph.HypergraphNode* node
  */
-struct __pyx_obj_4cdec_5_cdec_Metric {
+struct __pyx_obj_4cdec_5_cdec_HypergraphNode {
   PyObject_HEAD
-  struct __pyx_obj_4cdec_5_cdec_Scorer *scorer;
+  struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphNode *__pyx_vtab;
+  Hypergraph *hg;
+  Hypergraph::Node *node;
 };
 
 
-/* "cdec/_cdec.pyx":43
- *             yield key, str(value)
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":81
+ *             del e_derivations
  * 
- * cdef class Decoder:             # <<<<<<<<<<<<<<
- *     cdef decoder.Decoder* dec
- *     cdef DenseVector weights
+ *     def kbest_features(self, size):             # <<<<<<<<<<<<<<
+ *         """hg.kbest_trees(size) -> List of k-best feature vectors in the hypergraph."""
+ *         cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal, kbest.NoFilter[FastSparseVector[double]]]* derivations = new kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal, kbest.NoFilter[FastSparseVector[double]]](self.hg[0], size)
  */
-struct __pyx_obj_4cdec_5_cdec_Decoder {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features {
   PyObject_HEAD
-  Decoder *dec;
-  struct __pyx_obj_4cdec_5_cdec_DenseVector *weights;
+  KBest::KBestDerivations<FastSparseVector<weight_t>,FeatureVectorTraversal,KBest::NoFilter<FastSparseVector<double> > >::Derivation *__pyx_v_derivation;
+  KBest::KBestDerivations<FastSparseVector<weight_t>,FeatureVectorTraversal,KBest::NoFilter<FastSparseVector<double> > > *__pyx_v_derivations;
+  struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_fmap;
+  unsigned int __pyx_v_k;
+  struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self;
+  PyObject *__pyx_v_size;
+  unsigned int __pyx_t_0;
+  long __pyx_t_1;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":32
- *         self.vector[0][fid] = value
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":21
+ *         return '[%s]' % self.cat
  * 
- *     def __iter__(self):             # <<<<<<<<<<<<<<
- *         cdef unsigned fid
- *         for fid in range(1, self.vector.size()):
+ * cdef class NTRef:             # <<<<<<<<<<<<<<
+ *     cdef public unsigned ref
+ *     def __init__(self, unsigned ref):
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ {
+struct __pyx_obj_4cdec_5_cdec_NTRef {
   PyObject_HEAD
-  unsigned int __pyx_v_fid;
-  struct __pyx_obj_4cdec_5_cdec_DenseVector *__pyx_v_self;
-  size_t __pyx_t_0;
-  unsigned int __pyx_t_1;
+  unsigned int ref;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":72
- *         self.vector.set_value(fid, value)
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":199
+ *         super(MRule, self).__init__(lhs, rhs, e, scores, None)
+ * 
+ * cdef class Grammar:             # <<<<<<<<<<<<<<
+ *     cdef shared_ptr[grammar.Grammar]* grammar
  * 
- *     def __iter__(self):             # <<<<<<<<<<<<<<
- *         cdef FastSparseVector[weight_t].const_iterator* it = new FastSparseVector[weight_t].const_iterator(self.vector[0], False)
- *         cdef unsigned i
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ {
+struct __pyx_obj_4cdec_5_cdec_Grammar {
   PyObject_HEAD
-  unsigned int __pyx_v_i;
-  FastSparseVector<weight_t>::const_iterator *__pyx_v_it;
-  struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self;
-  size_t __pyx_t_0;
-  unsigned int __pyx_t_1;
+  boost::shared_ptr<Grammar> *grammar;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":5
- * import cdec.sa._sa as _sa
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":4
+ * cimport kbest
  * 
- * def _phrase(phrase):             # <<<<<<<<<<<<<<
- *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)
+ * cdef class Hypergraph:             # <<<<<<<<<<<<<<
+ *     cdef hypergraph.Hypergraph* hg
+ *     cdef MT19937* rng
+ */
+struct __pyx_obj_4cdec_5_cdec_Hypergraph {
+  PyObject_HEAD
+  struct __pyx_vtabstruct_4cdec_5_cdec_Hypergraph *__pyx_vtab;
+  Hypergraph *hg;
+  MT19937 *rng;
+};
+
+
+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":65
+ *         return result
  * 
+ * cdef class CandidateSet:             # <<<<<<<<<<<<<<
+ *     cdef shared_ptr[mteval.SegmentEvaluator]* scorer
+ *     cdef mteval.EvaluationMetric* metric
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase {
+struct __pyx_obj_4cdec_5_cdec_CandidateSet {
   PyObject_HEAD
-  PyObject *__pyx_v_phrase;
+  boost::shared_ptr<SegmentEvaluator> *scorer;
+  EvaluationMetric *metric;
+  training::CandidateSet *cs;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":6
+/* "cdec/sa/_sa.pxd":3
+ * from libc.stdio cimport FILE
  * 
- * def _phrase(phrase):
- *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)             # <<<<<<<<<<<<<<
+ * cdef class FloatList:             # <<<<<<<<<<<<<<
+ *     cdef int size
+ *     cdef int increment
+ */
+struct __pyx_obj_4cdec_2sa_3_sa_FloatList {
+  PyObject_HEAD
+  struct __pyx_vtabstruct_4cdec_2sa_3_sa_FloatList *__pyx_vtab;
+  int size;
+  int increment;
+  int len;
+  float *arr;
+};
+
+
+/* "/usr0/home/austinma/git/cdec/python/cdec/lattice.pxi":61
+ *             yield self[i]
  * 
- * cdef class NT:
+ *     def todot(self):             # <<<<<<<<<<<<<<
+ *         """lattice.todot() -> Representation of the lattice in GraphViz dot format."""
+ *         def lines():
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot {
   PyObject_HEAD
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *__pyx_outer_scope;
-  PyObject *__pyx_v_w;
-  PyObject *__pyx_t_0;
-  Py_ssize_t __pyx_t_1;
-  PyObject *(*__pyx_t_2)(PyObject *);
+  struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":137
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":62
+ *             del derivations
  * 
- *     property a:
- *         def __get__(self):             # <<<<<<<<<<<<<<
- *             cdef unsigned i
- *             cdef vector[grammar.AlignmentPoint]* a = &self.rule.get().a_
+ *     def kbest_trees(self, size):             # <<<<<<<<<<<<<<
+ *         """hg.kbest_trees(size) -> List of k-best trees in the hypergrapt.NoFilter."""
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.NoFilter[vector[int]]]* f_derivations = new kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.NoFilter[vector[int]]](self.hg[0], size)
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees {
   PyObject_HEAD
-  std::vector<AlignmentPoint> *__pyx_v_a;
-  unsigned int __pyx_v_i;
-  struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self;
-  size_t __pyx_t_0;
-  unsigned int __pyx_t_1;
+  KBest::KBestDerivations<std::vector<WordID>,ETreeTraversal,KBest::NoFilter<std::vector<int> > >::Derivation *__pyx_v_e_derivation;
+  KBest::KBestDerivations<std::vector<WordID>,ETreeTraversal,KBest::NoFilter<std::vector<int> > > *__pyx_v_e_derivations;
+  PyObject *__pyx_v_e_tree;
+  KBest::KBestDerivations<std::vector<WordID>,FTreeTraversal,KBest::NoFilter<std::vector<int> > >::Derivation *__pyx_v_f_derivation;
+  KBest::KBestDerivations<std::vector<WordID>,FTreeTraversal,KBest::NoFilter<std::vector<int> > > *__pyx_v_f_derivations;
+  PyObject *__pyx_v_f_tree;
+  unsigned int __pyx_v_k;
+  struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self;
+  PyObject *__pyx_v_size;
+  unsigned int __pyx_t_0;
+  long __pyx_t_1;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":178
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":178
  *             self.rule.get().lhs_ = -TDConvert((<NT> lhs).cat)
  * 
  *     def __str__(self):             # <<<<<<<<<<<<<<
@@ -1076,76 +1080,64 @@ struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_5___str__ {
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":179
+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":100
+ *         self.cs.AddKBestCandidates(hypergraph.hg[0], k, self.scorer.get())
  * 
- *     def __str__(self):
- *         scores = ' '.join('%s=%s' % feat for feat in self.scores)             # <<<<<<<<<<<<<<
- *         return '%s ||| %s ||| %s ||| %s' % (self.lhs,
- *                 _phrase(self.f), _phrase(self.e), scores)
+ * cdef class SegmentEvaluator:             # <<<<<<<<<<<<<<
+ *     cdef shared_ptr[mteval.SegmentEvaluator]* scorer
+ *     cdef mteval.EvaluationMetric* metric
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr {
+struct __pyx_obj_4cdec_5_cdec_SegmentEvaluator {
   PyObject_HEAD
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_5___str__ *__pyx_outer_scope;
-  PyObject *__pyx_v_feat;
-  PyObject *__pyx_t_0;
-  Py_ssize_t __pyx_t_1;
-  PyObject *(*__pyx_t_2)(PyObject *);
+  boost::shared_ptr<SegmentEvaluator> *scorer;
+  EvaluationMetric *metric;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":205
- *         del self.grammar
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":209
  * 
- *     def __iter__(self):             # <<<<<<<<<<<<<<
- *         cdef grammar.const_GrammarIter* root = self.grammar.get().GetRoot()
- *         cdef grammar.const_RuleBin* rbin = root.GetRules()
+ *     property edges:
+ *         def __get__(self):             # <<<<<<<<<<<<<<
+ *             cdef unsigned i
+ *             for i in range(self.hg.edges_.size()):
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ {
   PyObject_HEAD
   unsigned int __pyx_v_i;
-  const RuleBin *__pyx_v_rbin;
-  const GrammarIter *__pyx_v_root;
-  struct __pyx_obj_4cdec_5_cdec_Grammar *__pyx_v_self;
-  struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_trule;
-  int __pyx_t_0;
+  struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self;
+  size_t __pyx_t_0;
   unsigned int __pyx_t_1;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":49
- *         return unicode(hypergraph.JoshuaVisualizationString(self.hg[0]).c_str(), 'utf8')
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":314
  * 
- *     def kbest(self, size):             # <<<<<<<<<<<<<<
- *         """hg.kbest(size) -> List of k-best hypotheses in the hypergraph."""
- *         cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal]* derivations = new kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal](self.hg[0], size)
+ *     property out_edges:
+ *         def __get__(self):             # <<<<<<<<<<<<<<
+ *             cdef unsigned i
+ *             for i in range(self.node.out_edges_.size()):
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__ {
   PyObject_HEAD
-  KBest::KBestDerivations<std::vector<WordID>,ESentenceTraversal>::Derivation *__pyx_v_derivation;
-  KBest::KBestDerivations<std::vector<WordID>,ESentenceTraversal> *__pyx_v_derivations;
-  unsigned int __pyx_v_k;
-  struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self;
-  PyObject *__pyx_v_size;
-  unsigned int __pyx_t_0;
-  long __pyx_t_1;
+  unsigned int __pyx_v_i;
+  struct __pyx_obj_4cdec_5_cdec_HypergraphNode *__pyx_v_self;
+  size_t __pyx_t_0;
+  unsigned int __pyx_t_1;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":62
- *             del derivations
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":129
+ *             del e_derivations
  * 
- *     def kbest_trees(self, size):             # <<<<<<<<<<<<<<
- *         """hg.kbest_trees(size) -> List of k-best trees in the hypergraph."""
- *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal]* f_derivations = new kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal](self.hg[0], size)
+ *     def unique_kbest_features(self, size):             # <<<<<<<<<<<<<<
+ *         """hg.kbest_trees(size) -> List of unique k-best feature vectors in the hypergraph."""
+ *         cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal, kbest.NoFilter[FastSparseVector[double]]]* derivations = new kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal, kbest.NoFilter[FastSparseVector[double]]](self.hg[0], size)
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features {
   PyObject_HEAD
-  KBest::KBestDerivations<std::vector<WordID>,ETreeTraversal>::Derivation *__pyx_v_e_derivation;
-  KBest::KBestDerivations<std::vector<WordID>,ETreeTraversal> *__pyx_v_e_derivations;
-  PyObject *__pyx_v_e_tree;
-  KBest::KBestDerivations<std::vector<WordID>,FTreeTraversal>::Derivation *__pyx_v_f_derivation;
-  KBest::KBestDerivations<std::vector<WordID>,FTreeTraversal> *__pyx_v_f_derivations;
-  PyObject *__pyx_v_f_tree;
+  KBest::KBestDerivations<FastSparseVector<weight_t>,FeatureVectorTraversal,KBest::NoFilter<FastSparseVector<double> > >::Derivation *__pyx_v_derivation;
+  KBest::KBestDerivations<FastSparseVector<weight_t>,FeatureVectorTraversal,KBest::NoFilter<FastSparseVector<double> > > *__pyx_v_derivations;
+  struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_fmap;
   unsigned int __pyx_v_k;
   struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self;
   PyObject *__pyx_v_size;
@@ -1154,118 +1146,119 @@ struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees {
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":81
- *             del e_derivations
- * 
- *     def kbest_features(self, size):             # <<<<<<<<<<<<<<
- *         """hg.kbest_trees(size) -> List of k-best feature vectors in the hypergraph."""
- *         cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal]* derivations = new kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal](self.hg[0], size)
+/* "cdec/_cdec.pyx":56
+ *                     'csplit', 'tagger', 'lexalign'):
+ *                 raise InvalidConfig('formalism "%s" unknown' % formalism)
+ *             config_str = '\n'.join('%s = %s' % kv for kv in _make_config(config))             # <<<<<<<<<<<<<<
+ *         cdef istringstream* config_stream = new istringstream(config_str)
+ *         self.dec = new decoder.Decoder(config_stream)
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_28_genexpr {
   PyObject_HEAD
-  KBest::KBestDerivations<FastSparseVector<weight_t>,FeatureVectorTraversal>::Derivation *__pyx_v_derivation;
-  KBest::KBestDerivations<FastSparseVector<weight_t>,FeatureVectorTraversal> *__pyx_v_derivations;
-  struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_fmap;
-  unsigned int __pyx_v_k;
-  struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self;
-  PyObject *__pyx_v_size;
-  unsigned int __pyx_t_0;
-  long __pyx_t_1;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__ *__pyx_outer_scope;
+  PyObject *__pyx_v_kv;
+  PyObject *__pyx_t_0;
+  Py_ssize_t __pyx_t_1;
+  PyObject *(*__pyx_t_2)(PyObject *);
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":97
- *             del derivations
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":6
  * 
- *     def sample(self, unsigned n):             # <<<<<<<<<<<<<<
- *         """hg.sample(n) -> Sample of n hypotheses from the hypergraph."""
- *         cdef vector[hypergraph.Hypothesis]* hypos = new vector[hypergraph.Hypothesis]()
+ * def _phrase(phrase):
+ *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)             # <<<<<<<<<<<<<<
+ * 
+ * cdef class NT:
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_sample {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr {
   PyObject_HEAD
-  std::vector<HypergraphSampler::Hypothesis> *__pyx_v_hypos;
-  unsigned int __pyx_v_k;
-  unsigned int __pyx_v_n;
-  struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self;
-  size_t __pyx_t_0;
-  unsigned int __pyx_t_1;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *__pyx_outer_scope;
+  PyObject *__pyx_v_w;
+  PyObject *__pyx_t_0;
+  Py_ssize_t __pyx_t_1;
+  PyObject *(*__pyx_t_2)(PyObject *);
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":108
- *             del hypos
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":49
+ *         return unicode(hypergraph.JoshuaVisualizationString(self.hg[0]).c_str(), 'utf8')
  * 
- *     def sample_trees(self, unsigned n):             # <<<<<<<<<<<<<<
- *        """hg.sample_trees(n) -> Sample of n trees from the hypergraph."""
- *        cdef vector[string]* trees = new vector[string]()
+ *     def kbest(self, size):             # <<<<<<<<<<<<<<
+ *         """hg.kbest(size) -> List of k-best hypotheses in the hypergraph."""
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal, kbest.NoFilter[vector[int]]]* derivations = new kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal, kbest.NoFilter[vector[int]]](self.hg[0], size)
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_sample_trees {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest {
   PyObject_HEAD
+  KBest::KBestDerivations<std::vector<WordID>,ESentenceTraversal,KBest::NoFilter<std::vector<int> > >::Derivation *__pyx_v_derivation;
+  KBest::KBestDerivations<std::vector<WordID>,ESentenceTraversal,KBest::NoFilter<std::vector<int> > > *__pyx_v_derivations;
   unsigned int __pyx_v_k;
-  unsigned int __pyx_v_n;
   struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self;
-  std::vector<std::string> *__pyx_v_trees;
-  size_t __pyx_t_0;
-  unsigned int __pyx_t_1;
+  PyObject *__pyx_v_size;
+  unsigned int __pyx_t_0;
+  long __pyx_t_1;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":161
+/* "cdec/sa/_sa.pxd":29
+ *     cdef FloatList values
  * 
- *     property edges:
- *         def __get__(self):             # <<<<<<<<<<<<<<
- *             cdef unsigned i
- *             for i in range(self.hg.edges_.size()):
+ * cdef class Phrase:             # <<<<<<<<<<<<<<
+ *     cdef int *syms
+ *     cdef int n, *varpos, n_vars
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13___get__ {
+struct __pyx_obj_4cdec_2sa_3_sa_Phrase {
   PyObject_HEAD
-  unsigned int __pyx_v_i;
-  struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self;
-  size_t __pyx_t_0;
-  unsigned int __pyx_t_1;
+  struct __pyx_vtabstruct_4cdec_2sa_3_sa_Phrase *__pyx_vtab;
+  int *syms;
+  int n;
+  int *varpos;
+  int n_vars;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":167
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":264
  * 
- *     property nodes:
+ *     property tail_nodes:
  *         def __get__(self):             # <<<<<<<<<<<<<<
  *             cdef unsigned i
- *             for i in range(self.hg.nodes_.size()):
+ *             for i in range(self.edge.tail_nodes_.size()):
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__ {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___get__ {
   PyObject_HEAD
   unsigned int __pyx_v_i;
-  struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self;
-  size_t __pyx_t_0;
+  struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *__pyx_v_self;
+  unsigned int __pyx_t_0;
   unsigned int __pyx_t_1;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":216
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":205
+ *         del self.grammar
  * 
- *     property tail_nodes:
- *         def __get__(self):             # <<<<<<<<<<<<<<
- *             cdef unsigned i
- *             for i in range(self.edge.tail_nodes_.size()):
+ *     def __iter__(self):             # <<<<<<<<<<<<<<
+ *         cdef grammar.const_GrammarIter* root = self.grammar.get().GetRoot()
+ *         cdef grammar.const_RuleBin* rbin = root.GetRules()
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15___get__ {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ {
   PyObject_HEAD
   unsigned int __pyx_v_i;
-  struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *__pyx_v_self;
-  unsigned int __pyx_t_0;
+  const RuleBin *__pyx_v_rbin;
+  const GrammarIter *__pyx_v_root;
+  struct __pyx_obj_4cdec_5_cdec_Grammar *__pyx_v_self;
+  struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_trule;
+  int __pyx_t_0;
   unsigned int __pyx_t_1;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":260
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":308
  * 
  *     property in_edges:
  *         def __get__(self):             # <<<<<<<<<<<<<<
  *             cdef unsigned i
  *             for i in range(self.node.in_edges_.size()):
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19___get__ {
   PyObject_HEAD
   unsigned int __pyx_v_i;
   struct __pyx_obj_4cdec_5_cdec_HypergraphNode *__pyx_v_self;
@@ -1274,174 +1267,213 @@ struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ {
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":266
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":223
+ *             self.grammar.get().SetGrammarName(name)
  * 
- *     property out_edges:
- *         def __get__(self):             # <<<<<<<<<<<<<<
- *             cdef unsigned i
- *             for i in range(self.node.out_edges_.size()):
+ * cdef class TextGrammar(Grammar):             # <<<<<<<<<<<<<<
+ *     def __init__(self, rules):
+ *         """TextGrammar(rules) -> SCFG Grammar containing the rules."""
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ {
-  PyObject_HEAD
-  unsigned int __pyx_v_i;
-  struct __pyx_obj_4cdec_5_cdec_HypergraphNode *__pyx_v_self;
-  size_t __pyx_t_0;
-  unsigned int __pyx_t_1;
+struct __pyx_obj_4cdec_5_cdec_TextGrammar {
+  struct __pyx_obj_4cdec_5_cdec_Grammar __pyx_base;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":56
- *         return unicode(str(self), 'utf8')
+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":90
+ *         return candidate
  * 
  *     def __iter__(self):             # <<<<<<<<<<<<<<
  *         cdef unsigned i
  *         for i in range(len(self)):
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___iter__ {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__ {
   PyObject_HEAD
   unsigned int __pyx_v_i;
-  struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self;
+  struct __pyx_obj_4cdec_5_cdec_CandidateSet *__pyx_v_self;
   Py_ssize_t __pyx_t_0;
   unsigned int __pyx_t_1;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":61
- *             yield self[i]
+/* "cdec/_cdec.pyx":43
+ *             yield key, str(value)
  * 
- *     def todot(self):             # <<<<<<<<<<<<<<
- *         """lattice.todot() -> Representation of the lattice in GraphViz dot format."""
- *         def lines():
+ * cdef class Decoder:             # <<<<<<<<<<<<<<
+ *     cdef decoder.Decoder* dec
+ *     cdef DenseVector weights
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19_todot {
+struct __pyx_obj_4cdec_5_cdec_Decoder {
   PyObject_HEAD
-  struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self;
+  Decoder *dec;
+  struct __pyx_obj_4cdec_5_cdec_DenseVector *weights;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":63
- *     def todot(self):
- *         """lattice.todot() -> Representation of the lattice in GraphViz dot format."""
- *         def lines():             # <<<<<<<<<<<<<<
- *             yield 'digraph lattice {'
- *             yield 'rankdir = LR;'
+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":12
+ *         return stats
+ * 
+ * cdef class Candidate:             # <<<<<<<<<<<<<<
+ *     cdef mteval.const_Candidate* candidate
+ *     cdef public float score
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20_lines {
+struct __pyx_obj_4cdec_5_cdec_Candidate {
   PyObject_HEAD
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19_todot *__pyx_outer_scope;
-  PyObject *__pyx_v_delta;
-  PyObject *__pyx_v_i;
-  PyObject *__pyx_v_label;
-  PyObject *__pyx_v_weight;
-  Py_ssize_t __pyx_t_0;
-  PyObject *__pyx_t_1;
-  PyObject *(*__pyx_t_2)(PyObject *);
-  PyObject *__pyx_t_3;
-  Py_ssize_t __pyx_t_4;
-  PyObject *(*__pyx_t_5)(PyObject *);
+  const training::Candidate *candidate;
+  float score;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":44
- *         return self.stats.size()
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":145
+ *             del derivations
  * 
- *     def __iter__(self):             # <<<<<<<<<<<<<<
- *         for i in range(len(self)):
- *             yield self[i]
+ *     def sample(self, unsigned n):             # <<<<<<<<<<<<<<
+ *         """hg.sample(n) -> Sample of n hypotheses from the hypergraph."""
+ *         cdef vector[hypergraph.Hypothesis]* hypos = new vector[hypergraph.Hypothesis]()
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14_sample {
   PyObject_HEAD
-  Py_ssize_t __pyx_v_i;
-  struct __pyx_obj_4cdec_5_cdec_SufficientStats *__pyx_v_self;
-  Py_ssize_t __pyx_t_0;
-  Py_ssize_t __pyx_t_1;
+  std::vector<HypergraphSampler::Hypothesis> *__pyx_v_hypos;
+  unsigned int __pyx_v_k;
+  unsigned int __pyx_v_n;
+  struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self;
+  size_t __pyx_t_0;
+  unsigned int __pyx_t_1;
 };
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":90
- *         return candidate
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":215
  * 
- *     def __iter__(self):             # <<<<<<<<<<<<<<
- *         cdef unsigned i
- *         for i in range(len(self)):
+ *     property nodes:
+ *         def __get__(self):             # <<<<<<<<<<<<<<
+ *             cdef unsigned i
+ *             for i in range(self.hg.nodes_.size()):
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__ {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ {
   PyObject_HEAD
   unsigned int __pyx_v_i;
-  struct __pyx_obj_4cdec_5_cdec_CandidateSet *__pyx_v_self;
-  Py_ssize_t __pyx_t_0;
+  struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self;
+  size_t __pyx_t_0;
   unsigned int __pyx_t_1;
 };
 
 
-/* "cdec/_cdec.pyx":32
- *     SetSilent(yn)
+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":32
+ *         self.vector[0][fid] = value
  * 
- * def _make_config(config):             # <<<<<<<<<<<<<<
- *     for key, value in config.items():
- *         if isinstance(value, dict):
+ *     def __iter__(self):             # <<<<<<<<<<<<<<
+ *         cdef unsigned fid
+ *         for fid in range(1, self.vector.size()):
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23__make_config {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ {
   PyObject_HEAD
-  PyObject *__pyx_v_config;
-  PyObject *__pyx_v_info;
-  PyObject *__pyx_v_key;
-  PyObject *__pyx_v_name;
-  PyObject *__pyx_v_value;
+  unsigned int __pyx_v_fid;
+  struct __pyx_obj_4cdec_5_cdec_DenseVector *__pyx_v_self;
+  size_t __pyx_t_0;
+  unsigned int __pyx_t_1;
+};
+
+
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":179
+ * 
+ *     def __str__(self):
+ *         scores = ' '.join('%s=%s' % feat for feat in self.scores)             # <<<<<<<<<<<<<<
+ *         return '%s ||| %s ||| %s ||| %s' % (self.lhs,
+ *                 _phrase(self.f), _phrase(self.e), scores)
+ */
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr {
+  PyObject_HEAD
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_5___str__ *__pyx_outer_scope;
+  PyObject *__pyx_v_feat;
   PyObject *__pyx_t_0;
-  PyObject *__pyx_t_1;
-  Py_ssize_t __pyx_t_2;
-  PyObject *(*__pyx_t_3)(PyObject *);
-  Py_ssize_t __pyx_t_4;
-  PyObject *(*__pyx_t_5)(PyObject *);
+  Py_ssize_t __pyx_t_1;
+  PyObject *(*__pyx_t_2)(PyObject *);
 };
 
 
-/* "cdec/_cdec.pyx":47
- *     cdef DenseVector weights
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":110
+ *             del derivations
  * 
- *     def __init__(self, config_str=None, **config):             # <<<<<<<<<<<<<<
- *         """Decoder('formalism = scfg') -> initialize from configuration string
- *         Decoder(formalism='scfg') -> initialize from named parameters
+ *     def unique_kbest_trees(self, size):             # <<<<<<<<<<<<<<
+ *         """hg.kbest_trees(size) -> List of unique k-best trees in the hypergraph."""
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.FilterUnique]* f_derivations = new kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.FilterUnique](self.hg[0], size)
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___init__ {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees {
   PyObject_HEAD
-  PyObject *__pyx_v_config;
+  KBest::KBestDerivations<std::vector<WordID>,ETreeTraversal,KBest::FilterUnique>::Derivation *__pyx_v_e_derivation;
+  KBest::KBestDerivations<std::vector<WordID>,ETreeTraversal,KBest::FilterUnique> *__pyx_v_e_derivations;
+  PyObject *__pyx_v_e_tree;
+  KBest::KBestDerivations<std::vector<WordID>,FTreeTraversal,KBest::FilterUnique>::Derivation *__pyx_v_f_derivation;
+  KBest::KBestDerivations<std::vector<WordID>,FTreeTraversal,KBest::FilterUnique> *__pyx_v_f_derivations;
+  PyObject *__pyx_v_f_tree;
+  unsigned int __pyx_v_k;
+  struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self;
+  PyObject *__pyx_v_size;
+  unsigned int __pyx_t_0;
+  long __pyx_t_1;
 };
 
 
-/* "cdec/_cdec.pyx":56
- *                     'csplit', 'tagger', 'lexalign'):
- *                 raise InvalidConfig('formalism "%s" unknown' % formalism)
- *             config_str = '\n'.join('%s = %s' % kv for kv in _make_config(config))             # <<<<<<<<<<<<<<
- *         cdef istringstream* config_stream = new istringstream(config_str)
- *         self.dec = new decoder.Decoder(config_stream)
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":137
+ * 
+ *     property a:
+ *         def __get__(self):             # <<<<<<<<<<<<<<
+ *             cdef unsigned i
+ *             cdef vector[grammar.AlignmentPoint]* a = &self.rule.get().a_
  */
-struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25_genexpr {
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ {
   PyObject_HEAD
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___init__ *__pyx_outer_scope;
-  PyObject *__pyx_v_kv;
-  PyObject *__pyx_t_0;
-  Py_ssize_t __pyx_t_1;
-  PyObject *(*__pyx_t_2)(PyObject *);
+  std::vector<AlignmentPoint> *__pyx_v_a;
+  unsigned int __pyx_v_i;
+  struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self;
+  size_t __pyx_t_0;
+  unsigned int __pyx_t_1;
+};
+
+
+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":72
+ *         self.vector.set_value(fid, value)
+ * 
+ *     def __iter__(self):             # <<<<<<<<<<<<<<
+ *         cdef FastSparseVector[weight_t].const_iterator* it = new FastSparseVector[weight_t].const_iterator(self.vector[0], False)
+ *         cdef unsigned i
+ */
+struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ {
+  PyObject_HEAD
+  unsigned int __pyx_v_i;
+  FastSparseVector<weight_t>::const_iterator *__pyx_v_it;
+  struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self;
+  size_t __pyx_t_0;
+  unsigned int __pyx_t_1;
 };
 
 
 
-/* "cdec/sa/_sa.pxd":3
- * from libc.stdio cimport FILE
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":294
+ *         raise NotImplemented('comparison not implemented for HypergraphEdge')
  * 
- * cdef class FloatList:             # <<<<<<<<<<<<<<
- *     cdef int size
- *     cdef int increment
+ * cdef class HypergraphNode:             # <<<<<<<<<<<<<<
+ *     cdef hypergraph.Hypergraph* hg
+ *     cdef hypergraph.HypergraphNode* node
  */
 
-struct __pyx_vtabstruct_4cdec_2sa_3_sa_FloatList {
-  void (*set)(struct __pyx_obj_4cdec_2sa_3_sa_FloatList *, int, float);
-  void (*write_handle)(struct __pyx_obj_4cdec_2sa_3_sa_FloatList *, FILE *);
-  void (*read_handle)(struct __pyx_obj_4cdec_2sa_3_sa_FloatList *, FILE *);
+struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphNode {
+  PyObject *(*init)(struct __pyx_obj_4cdec_5_cdec_HypergraphNode *, Hypergraph *, unsigned int);
 };
-static struct __pyx_vtabstruct_4cdec_2sa_3_sa_FloatList *__pyx_vtabptr_4cdec_2sa_3_sa_FloatList;
+static struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphNode *__pyx_vtabptr_4cdec_5_cdec_HypergraphNode;
+
+
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":244
+ *         return vector
+ * 
+ * cdef class HypergraphEdge:             # <<<<<<<<<<<<<<
+ *     cdef hypergraph.Hypergraph* hg
+ *     cdef hypergraph.HypergraphEdge* edge
+ */
+
+struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphEdge {
+  PyObject *(*init)(struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *, Hypergraph *, unsigned int);
+};
+static struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphEdge *__pyx_vtabptr_4cdec_5_cdec_HypergraphEdge;
 
 
 /* "cdec/sa/_sa.pxd":12
@@ -1464,6 +1496,22 @@ struct __pyx_vtabstruct_4cdec_2sa_3_sa_IntList {
 static struct __pyx_vtabstruct_4cdec_2sa_3_sa_IntList *__pyx_vtabptr_4cdec_2sa_3_sa_IntList;
 
 
+/* "cdec/sa/_sa.pxd":3
+ * from libc.stdio cimport FILE
+ * 
+ * cdef class FloatList:             # <<<<<<<<<<<<<<
+ *     cdef int size
+ *     cdef int increment
+ */
+
+struct __pyx_vtabstruct_4cdec_2sa_3_sa_FloatList {
+  void (*set)(struct __pyx_obj_4cdec_2sa_3_sa_FloatList *, int, float);
+  void (*write_handle)(struct __pyx_obj_4cdec_2sa_3_sa_FloatList *, FILE *);
+  void (*read_handle)(struct __pyx_obj_4cdec_2sa_3_sa_FloatList *, FILE *);
+};
+static struct __pyx_vtabstruct_4cdec_2sa_3_sa_FloatList *__pyx_vtabptr_4cdec_2sa_3_sa_FloatList;
+
+
 /* "cdec/sa/_sa.pxd":29
  *     cdef FloatList values
  * 
@@ -1479,7 +1527,7 @@ struct __pyx_vtabstruct_4cdec_2sa_3_sa_Phrase {
 static struct __pyx_vtabstruct_4cdec_2sa_3_sa_Phrase *__pyx_vtabptr_4cdec_2sa_3_sa_Phrase;
 
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":4
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":4
  * cimport kbest
  * 
  * cdef class Hypergraph:             # <<<<<<<<<<<<<<
@@ -1491,34 +1539,6 @@ struct __pyx_vtabstruct_4cdec_5_cdec_Hypergraph {
   MT19937 *(*_rng)(struct __pyx_obj_4cdec_5_cdec_Hypergraph *);
 };
 static struct __pyx_vtabstruct_4cdec_5_cdec_Hypergraph *__pyx_vtabptr_4cdec_5_cdec_Hypergraph;
-
-
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":196
- *         return vector
- * 
- * cdef class HypergraphEdge:             # <<<<<<<<<<<<<<
- *     cdef hypergraph.Hypergraph* hg
- *     cdef hypergraph.HypergraphEdge* edge
- */
-
-struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphEdge {
-  PyObject *(*init)(struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *, Hypergraph *, unsigned int);
-};
-static struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphEdge *__pyx_vtabptr_4cdec_5_cdec_HypergraphEdge;
-
-
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":246
- *         raise NotImplemented('comparison not implemented for HypergraphEdge')
- * 
- * cdef class HypergraphNode:             # <<<<<<<<<<<<<<
- *     cdef hypergraph.Hypergraph* hg
- *     cdef hypergraph.HypergraphNode* node
- */
-
-struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphNode {
-  PyObject *(*init)(struct __pyx_obj_4cdec_5_cdec_HypergraphNode *, Hypergraph *, unsigned int);
-};
-static struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphNode *__pyx_vtabptr_4cdec_5_cdec_HypergraphNode;
 #ifndef CYTHON_REFNANNY
   #define CYTHON_REFNANNY 0
 #endif
@@ -1570,14 +1590,6 @@ static struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphNode *__pyx_vtabptr_4cdec_
   #define __Pyx_XGOTREF(r)
   #define __Pyx_XGIVEREF(r)
 #endif /* CYTHON_REFNANNY */
-#define __Pyx_XDECREF_SET(r, v) do {                            \
-        PyObject *tmp = (PyObject *) r;                         \
-        r = v; __Pyx_XDECREF(tmp);                              \
-    } while (0)
-#define __Pyx_DECREF_SET(r, v) do {                             \
-        PyObject *tmp = (PyObject *) r;                         \
-        r = v; __Pyx_DECREF(tmp);                               \
-    } while (0)
 #define __Pyx_CLEAR(r)    do { PyObject* tmp = ((PyObject*)(r)); r = NULL; __Pyx_DECREF(tmp);} while(0)
 #define __Pyx_XCLEAR(r)   do { if((r) != NULL) {PyObject* tmp = ((PyObject*)(r)); r = NULL; __Pyx_DECREF(tmp);}} while(0)
 
@@ -1598,12 +1610,6 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_GetAttrStr(PyObject* obj, PyObject
 
 static PyObject *__Pyx_GetBuiltinName(PyObject *name); /*proto*/
 
-#if CYTHON_COMPILING_IN_CPYTHON
-static CYTHON_INLINE PyObject* __Pyx_PyObject_Call(PyObject *func, PyObject *arg, PyObject *kw); /*proto*/
-#else
-#define __Pyx_PyObject_Call(func, arg, kw) PyObject_Call(func, arg, kw)
-#endif
-
 static CYTHON_INLINE void __Pyx_ErrRestore(PyObject *type, PyObject *value, PyObject *tb); /*proto*/
 static CYTHON_INLINE void __Pyx_ErrFetch(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
 
@@ -1614,37 +1620,13 @@ static void __Pyx_RaiseArgtupleInvalid(const char* func_name, int exact,
 
 static CYTHON_INLINE int __Pyx_CheckKeywordStrings(PyObject *kwdict, const char* function_name, int kw_allowed); /*proto*/
 
-static CYTHON_INLINE int __Pyx_ArgTypeTest(PyObject *obj, PyTypeObject *type, int none_allowed,
+static int __Pyx_ArgTypeTest(PyObject *obj, PyTypeObject *type, int none_allowed,
     const char *name, int exact); /*proto*/
 
 static CYTHON_INLINE int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type); /*proto*/
 
-static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
-
-static CYTHON_INLINE void __Pyx_ExceptionSwap(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
-
-static CYTHON_INLINE void __Pyx_ExceptionSave(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
-static void __Pyx_ExceptionReset(PyObject *type, PyObject *value, PyObject *tb); /*proto*/
-
 static CYTHON_INLINE void __Pyx_RaiseClosureNameError(const char *varname);
 
-#if PY_MAJOR_VERSION < 3
-#define __Pyx_PyString_Join __Pyx_PyBytes_Join
-#define __Pyx_PyBaseString_Join(s, v) (PyUnicode_CheckExact(s) ? PyUnicode_Join(s, v) : __Pyx_PyBytes_Join(s, v))
-#else
-#define __Pyx_PyString_Join PyUnicode_Join
-#define __Pyx_PyBaseString_Join PyUnicode_Join
-#endif
-#if CYTHON_COMPILING_IN_CPYTHON
-    #if PY_MAJOR_VERSION < 3
-    #define __Pyx_PyBytes_Join _PyString_Join
-    #else
-    #define __Pyx_PyBytes_Join _PyBytes_Join
-    #endif
-#else
-static CYTHON_INLINE PyObject* __Pyx_PyBytes_Join(PyObject* sep, PyObject* values); /*proto*/
-#endif
-
 static void __Pyx_RaiseDoubleKeywordsError(const char* func_name, PyObject* kw_name); /*proto*/
 
 static int __Pyx_ParseOptionalKeywords(PyObject *kwds, PyObject **argnames[], \
@@ -1689,7 +1671,7 @@ static PyObject* __Pyx_PyObject_CallMethodTuple(PyObject* obj, PyObject* method_
     if (unlikely(!args)) return NULL;
     method = __Pyx_PyObject_GetAttrStr(obj, method_name);
     if (unlikely(!method)) goto bad;
-    result = __Pyx_PyObject_Call(method, args, NULL);
+    result = PyObject_Call(method, args, NULL);
     Py_DECREF(method);
 bad:
     Py_DECREF(args);
@@ -1704,23 +1686,22 @@ bad:
 #define __Pyx_PyObject_CallMethod0(obj, name) \
     __Pyx_PyObject_CallMethodTuple(obj, name, (Py_INCREF(__pyx_empty_tuple), __pyx_empty_tuple))
 
-static CYTHON_INLINE int __Pyx_PyObject_Append(PyObject* L, PyObject* x); /*proto*/
-
-#define __Pyx_GetItemInt(o, i, type, is_signed, to_py_func, is_list, wraparound, boundscheck) \
-    (__Pyx_fits_Py_ssize_t(i, type, is_signed) ? \
-    __Pyx_GetItemInt_Fast(o, (Py_ssize_t)i, is_list, wraparound, boundscheck) : \
-    (is_list ? (PyErr_SetString(PyExc_IndexError, "list index out of range"), (PyObject*)NULL) : \
-               __Pyx_GetItemInt_Generic(o, to_py_func(i))))
-#define __Pyx_GetItemInt_List(o, i, type, is_signed, to_py_func, is_list, wraparound, boundscheck) \
-    (__Pyx_fits_Py_ssize_t(i, type, is_signed) ? \
-    __Pyx_GetItemInt_List_Fast(o, (Py_ssize_t)i, wraparound, boundscheck) : \
-    (PyErr_SetString(PyExc_IndexError, "list index out of range"), (PyObject*)NULL))
+static CYTHON_INLINE PyObject* __Pyx_PyObject_Append(PyObject* L, PyObject* x); /*proto*/
+
+#define __Pyx_GetItemInt(o, i, size, to_py_func, is_list, wraparound, boundscheck) \
+    (((size) <= sizeof(Py_ssize_t)) ? \
+    __Pyx_GetItemInt_Fast(o, i, is_list, wraparound, boundscheck) : \
+    __Pyx_GetItemInt_Generic(o, to_py_func(i)))
+#define __Pyx_GetItemInt_List(o, i, size, to_py_func, is_list, wraparound, boundscheck) \
+    (((size) <= sizeof(Py_ssize_t)) ? \
+    __Pyx_GetItemInt_List_Fast(o, i, wraparound, boundscheck) : \
+    __Pyx_GetItemInt_Generic(o, to_py_func(i)))
 static CYTHON_INLINE PyObject *__Pyx_GetItemInt_List_Fast(PyObject *o, Py_ssize_t i,
                                                               int wraparound, int boundscheck);
-#define __Pyx_GetItemInt_Tuple(o, i, type, is_signed, to_py_func, is_list, wraparound, boundscheck) \
-    (__Pyx_fits_Py_ssize_t(i, type, is_signed) ? \
-    __Pyx_GetItemInt_Tuple_Fast(o, (Py_ssize_t)i, wraparound, boundscheck) : \
-    (PyErr_SetString(PyExc_IndexError, "tuple index out of range"), (PyObject*)NULL))
+#define __Pyx_GetItemInt_Tuple(o, i, size, to_py_func, is_list, wraparound, boundscheck) \
+    (((size) <= sizeof(Py_ssize_t)) ? \
+    __Pyx_GetItemInt_Tuple_Fast(o, i, wraparound, boundscheck) : \
+    __Pyx_GetItemInt_Generic(o, to_py_func(i)))
 static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Tuple_Fast(PyObject *o, Py_ssize_t i,
                                                               int wraparound, int boundscheck);
 static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Generic(PyObject *o, PyObject* j);
@@ -1738,8 +1719,7 @@ static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected);
 static CYTHON_INLINE PyObject *__Pyx_GetModuleGlobalName(PyObject *name); /*proto*/
 
 static void __Pyx_WriteUnraisable(const char *name, int clineno,
-                                  int lineno, const char *filename,
-                                  int full_traceback); /*proto*/
+                                  int lineno, const char *filename); /*proto*/
 
 static CYTHON_INLINE int __Pyx_PyDict_Contains(PyObject* item, PyObject* dict, int eq) {
     int result = PyDict_Contains(dict, item);
@@ -1749,8 +1729,6 @@ static CYTHON_INLINE int __Pyx_PyDict_Contains(PyObject* item, PyObject* dict, i
 #define __Pyx_PyIter_Next(obj) __Pyx_PyIter_Next2(obj, NULL)
 static CYTHON_INLINE PyObject *__Pyx_PyIter_Next2(PyObject *, PyObject *); /*proto*/
 
-static PyTypeObject* __Pyx_FetchCommonType(PyTypeObject* type);
-
 #define __Pyx_CyFunction_USED 1
 #include <structmember.h>
 #define __Pyx_CYFUNCTION_STATICMETHOD  0x01
@@ -1766,30 +1744,28 @@ static PyTypeObject* __Pyx_FetchCommonType(PyTypeObject* type);
     ((__pyx_CyFunctionObject *) (f))->defaults_getter = (g)
 typedef struct {
     PyCFunctionObject func;
+    int flags;
     PyObject *func_dict;
     PyObject *func_weakreflist;
     PyObject *func_name;
     PyObject *func_qualname;
     PyObject *func_doc;
-    PyObject *func_globals;
     PyObject *func_code;
     PyObject *func_closure;
     PyObject *func_classobj; /* No-args super() class cell */
     void *defaults;
     int defaults_pyobjects;
-    int flags;
     PyObject *defaults_tuple;   /* Const defaults tuple */
     PyObject *defaults_kwdict;  /* Const kwonly defaults dict */
     PyObject *(*defaults_getter)(PyObject *);
     PyObject *func_annotations; /* function annotations dict */
 } __pyx_CyFunctionObject;
 static PyTypeObject *__pyx_CyFunctionType = 0;
-#define __Pyx_CyFunction_NewEx(ml, flags, qualname, self, module, globals, code) \
-    __Pyx_CyFunction_New(__pyx_CyFunctionType, ml, flags, qualname, self, module, globals, code)
+#define __Pyx_CyFunction_NewEx(ml, flags, qualname, self, module, code) \
+    __Pyx_CyFunction_New(__pyx_CyFunctionType, ml, flags, qualname, self, module, code)
 static PyObject *__Pyx_CyFunction_New(PyTypeObject *, PyMethodDef *ml,
                                       int flags, PyObject* qualname,
-                                      PyObject *self,
-                                      PyObject *module, PyObject *globals,
+                                      PyObject *self, PyObject *module,
                                       PyObject* code);
 static CYTHON_INLINE void *__Pyx_CyFunction_InitDefaults(PyObject *m,
                                                          size_t size,
@@ -1804,43 +1780,6 @@ static int __Pyx_CyFunction_init(void);
 
 static PyObject* __Pyx_PyDict_GetItemDefault(PyObject* d, PyObject* key, PyObject* default_value); /*proto*/
 
-#include <string.h>
-
-static CYTHON_INLINE int __Pyx_PyBytes_Equals(PyObject* s1, PyObject* s2, int equals); /*proto*/
-
-static CYTHON_INLINE int __Pyx_PyUnicode_Equals(PyObject* s1, PyObject* s2, int equals); /*proto*/
-
-#if PY_MAJOR_VERSION >= 3
-#define __Pyx_PyString_Equals __Pyx_PyUnicode_Equals
-#else
-#define __Pyx_PyString_Equals __Pyx_PyBytes_Equals
-#endif
-
-#if CYTHON_COMPILING_IN_CPYTHON && (PY_VERSION_HEX >= 0x03020000 || PY_MAJOR_VERSION < 3 && PY_VERSION_HEX >= 0x02070000)
-static CYTHON_INLINE PyObject* __Pyx_PyObject_LookupSpecial(PyObject* obj, PyObject* attr_name) {
-    PyObject *res;
-    PyTypeObject *tp = Py_TYPE(obj);
-#if PY_MAJOR_VERSION < 3
-    if (unlikely(PyInstance_Check(obj)))
-        return __Pyx_PyObject_GetAttrStr(obj, attr_name);
-#endif
-    res = _PyType_Lookup(tp, attr_name);
-    if (likely(res)) {
-        descrgetfunc f = Py_TYPE(res)->tp_descr_get;
-        if (!f) {
-            Py_INCREF(res);
-        } else {
-            res = f(res, obj, (PyObject *)tp);
-        }
-    } else {
-        PyErr_SetObject(PyExc_AttributeError, attr_name);
-    }
-    return res;
-}
-#else
-#define __Pyx_PyObject_LookupSpecial(o,n) __Pyx_PyObject_GetAttrStr(o,n)
-#endif
-
 static double __Pyx__PyObject_AsDouble(PyObject* obj); /* proto */
 #if CYTHON_COMPILING_IN_PYPY
 #define __Pyx_PyObject_AsDouble(obj) \
@@ -1853,24 +1792,23 @@ static double __Pyx__PyObject_AsDouble(PyObject* obj); /* proto */
  PyFloat_AS_DOUBLE(obj) : __Pyx__PyObject_AsDouble(obj))
 #endif
 
-static int __Pyx_SetVtable(PyObject *dict, void *vtable); /*proto*/
+static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
 
-static void* __Pyx_GetVtable(PyObject *dict); /*proto*/
+#include <string.h>
 
-static PyObject *__Pyx_CalculateMetaclass(PyTypeObject *metaclass, PyObject *bases);
+static int __Pyx_SetVtable(PyObject *dict, void *vtable); /*proto*/
 
-static PyObject *__Pyx_Py3MetaclassPrepare(PyObject *metaclass, PyObject *bases, PyObject *name, PyObject *qualname,
-                                           PyObject *mkw, PyObject *modname, PyObject *doc); /*proto*/
-static PyObject *__Pyx_Py3ClassCreate(PyObject *metaclass, PyObject *name, PyObject *bases, PyObject *dict,
-                                      PyObject *mkw, int calculate_metaclass, int allow_py2_metaclass); /*proto*/
+static void* __Pyx_GetVtable(PyObject *dict); /*proto*/
 
-static CYTHON_INLINE PyObject* __Pyx_PyInt_From_unsigned_int(unsigned int value);
+static CYTHON_INLINE void __Pyx_ExceptionSave(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
+static void __Pyx_ExceptionReset(PyObject *type, PyObject *value, PyObject *tb); /*proto*/
 
-static CYTHON_INLINE unsigned int __Pyx_PyInt_As_unsigned_int(PyObject *);
+static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, int level); /*proto*/
 
-static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *);
+static PyObject *__Pyx_FindPy2Metaclass(PyObject *bases); /*proto*/
 
-static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, int level); /*proto*/
+static PyObject *__Pyx_CreateClass(PyObject *bases, PyObject *dict, PyObject *name,
+                                   PyObject *qualname, PyObject *modname); /*proto*/
 
 #ifndef __Pyx_CppExn2PyErr
 #include <new>
@@ -1911,19 +1849,43 @@ static void __Pyx_CppExn2PyErr() {
 }
 #endif
 
-static CYTHON_INLINE PyObject* __Pyx_PyInt_From_int(int value);
+static CYTHON_INLINE WordID __Pyx_PyInt_from_py_WordID(PyObject *);
+
+static PyObject* __Pyx_Globals(void); /*proto*/
 
-static CYTHON_INLINE PyObject* __Pyx_PyInt_From_long(long value);
+static CYTHON_INLINE unsigned char __Pyx_PyInt_AsUnsignedChar(PyObject *);
 
-static CYTHON_INLINE WordID __Pyx_PyInt_As_WordID(PyObject *);
+static CYTHON_INLINE unsigned short __Pyx_PyInt_AsUnsignedShort(PyObject *);
 
-static CYTHON_INLINE PyObject* __Pyx_PyInt_From_short(short value);
+static CYTHON_INLINE unsigned int __Pyx_PyInt_AsUnsignedInt(PyObject *);
 
-static CYTHON_INLINE PyObject *__Pyx_GetAttr(PyObject *, PyObject *); /*proto*/
+static CYTHON_INLINE char __Pyx_PyInt_AsChar(PyObject *);
 
-static PyObject* __Pyx_Globals(void); /*proto*/
+static CYTHON_INLINE short __Pyx_PyInt_AsShort(PyObject *);
+
+static CYTHON_INLINE int __Pyx_PyInt_AsInt(PyObject *);
+
+static CYTHON_INLINE signed char __Pyx_PyInt_AsSignedChar(PyObject *);
+
+static CYTHON_INLINE signed short __Pyx_PyInt_AsSignedShort(PyObject *);
+
+static CYTHON_INLINE signed int __Pyx_PyInt_AsSignedInt(PyObject *);
+
+static CYTHON_INLINE int __Pyx_PyInt_AsLongDouble(PyObject *);
+
+static CYTHON_INLINE unsigned long __Pyx_PyInt_AsUnsignedLong(PyObject *);
+
+static CYTHON_INLINE unsigned PY_LONG_LONG __Pyx_PyInt_AsUnsignedLongLong(PyObject *);
+
+static CYTHON_INLINE long __Pyx_PyInt_AsLong(PyObject *);
 
-static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *);
+static CYTHON_INLINE PY_LONG_LONG __Pyx_PyInt_AsLongLong(PyObject *);
+
+static CYTHON_INLINE signed long __Pyx_PyInt_AsSignedLong(PyObject *);
+
+static CYTHON_INLINE signed PY_LONG_LONG __Pyx_PyInt_AsSignedLongLong(PyObject *);
+
+static CYTHON_INLINE void __Pyx_ExceptionSwap(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
 
 #define __Pyx_Generator_USED
 #include <structmember.h>
@@ -1940,7 +1902,7 @@ typedef struct {
     PyObject *classobj;
     PyObject *yieldfrom;
     int resume_label;
-    char is_running;
+    char is_running;  // using T_BOOL for property below requires char value
 } __pyx_GeneratorObject;
 static __pyx_GeneratorObject *__Pyx_Generator_New(__pyx_generator_body_t body,
                                                   PyObject *closure);
@@ -2026,51 +1988,54 @@ static int (*__pyx_f_4cdec_2sa_3_sa_sym_getindex)(int); /*proto*/
 /* Module declarations from 'cdec.mteval' */
 
 /* Module declarations from 'cdec._cdec' */
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_24___iter__ = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec_TRule = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec_MRule = 0;
 static PyTypeObject *__pyx_ptype_4cdec_5_cdec_DenseVector = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec_SufficientStats = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_23_lines = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_27___init__ = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_21___iter__ = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec_Metric = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec_Candidate = 0;
 static PyTypeObject *__pyx_ptype_4cdec_5_cdec_SparseVector = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_26__make_config = 0;
 static PyTypeObject *__pyx_ptype_4cdec_5_cdec_NT = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec_Lattice = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_15_sample_trees = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec_HypergraphEdge = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_2__phrase = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec_Scorer = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec_HypergraphNode = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_10_kbest_features = 0;
 static PyTypeObject *__pyx_ptype_4cdec_5_cdec_NTRef = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec_TRule = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec_MRule = 0;
 static PyTypeObject *__pyx_ptype_4cdec_5_cdec_Grammar = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec_TextGrammar = 0;
 static PyTypeObject *__pyx_ptype_4cdec_5_cdec_Hypergraph = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec_HypergraphEdge = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec_HypergraphNode = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec_Lattice = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec_Candidate = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec_SufficientStats = 0;
 static PyTypeObject *__pyx_ptype_4cdec_5_cdec_CandidateSet = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_22_todot = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_5___str__ = 0;
 static PyTypeObject *__pyx_ptype_4cdec_5_cdec_SegmentEvaluator = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec_Scorer = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec_Metric = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec_Decoder = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct____iter__ = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_1___iter__ = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_2__phrase = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_16___get__ = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_20___get__ = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_28_genexpr = 0;
 static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_3_genexpr = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_4___get__ = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_5___str__ = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_6_genexpr = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_7___iter__ = 0;
 static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_8_kbest = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_10_kbest_features = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_11_sample = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_12_sample_trees = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_13___get__ = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_14___get__ = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_15___get__ = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_16___get__ = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_18___get__ = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_7___iter__ = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_19___get__ = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec_TextGrammar = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_25___iter__ = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec_Decoder = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct____iter__ = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_14_sample = 0;
 static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_17___get__ = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_18___iter__ = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_19_todot = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_20_lines = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_21___iter__ = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_22___iter__ = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_23__make_config = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_24___init__ = 0;
-static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_25_genexpr = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_6_genexpr = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_4___get__ = 0;
+static PyTypeObject *__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_1___iter__ = 0;
 static PyObject *__pyx_f_4cdec_5_cdec_as_str(PyObject *, struct __pyx_opt_args_4cdec_5_cdec_as_str *__pyx_optional_args); /*proto*/
 static struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_f_4cdec_5_cdec_convert_rule(struct __pyx_obj_4cdec_2sa_3_sa_Rule *); /*proto*/
 static struct __pyx_obj_4cdec_5_cdec_SufficientStats *__pyx_f_4cdec_5_cdec_as_stats(PyObject *, PyObject *); /*proto*/
@@ -2101,7 +2066,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_11DenseVector_10__iter__(struct __pyx_obj
 static PyObject *__pyx_pf_4cdec_5_cdec_11DenseVector_13dot(struct __pyx_obj_4cdec_5_cdec_DenseVector *__pyx_v_self, struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_other); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_11DenseVector_15tosparse(struct __pyx_obj_4cdec_5_cdec_DenseVector *__pyx_v_self); /* proto */
 static int __pyx_pf_4cdec_5_cdec_12SparseVector___init__(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self); /* proto */
-static void __pyx_pf_4cdec_5_cdec_12SparseVector_2__dealloc__(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self); /* proto */
+static void __pyx_pf_4cdec_5_cdec_12SparseVector_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_4copy(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_6__getitem__(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self, char *__pyx_v_fname); /* proto */
 static int __pyx_pf_4cdec_5_cdec_12SparseVector_8__setitem__(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self, char *__pyx_v_fname, float __pyx_v_value); /* proto */
@@ -2137,7 +2102,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_5NTRef_2__str__(struct __pyx_obj_4cdec_5_
 static PyObject *__pyx_pf_4cdec_5_cdec_5NTRef_3ref___get__(struct __pyx_obj_4cdec_5_cdec_NTRef *__pyx_v_self); /* proto */
 static int __pyx_pf_4cdec_5_cdec_5NTRef_3ref_2__set__(struct __pyx_obj_4cdec_5_cdec_NTRef *__pyx_v_self, PyObject *__pyx_v_value); /* proto */
 static int __pyx_pf_4cdec_5_cdec_5TRule___init__(struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self, PyObject *__pyx_v_lhs, PyObject *__pyx_v_f, PyObject *__pyx_v_e, PyObject *__pyx_v_scores, PyObject *__pyx_v_a, PyObject *__pyx_v_text); /* proto */
-static void __pyx_pf_4cdec_5_cdec_5TRule_2__dealloc__(struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self); /* proto */
+static void __pyx_pf_4cdec_5_cdec_5TRule_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_5TRule_5arity___get__(struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_5TRule_1f___get__(struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self); /* proto */
 static int __pyx_pf_4cdec_5_cdec_5TRule_1f_2__set__(struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self, PyObject *__pyx_v_f); /* proto */
@@ -2152,7 +2117,7 @@ static int __pyx_pf_4cdec_5_cdec_5TRule_3lhs_2__set__(struct __pyx_obj_4cdec_5_c
 static PyObject *__pyx_pf_4cdec_5_cdec_5TRule_7__str___genexpr(PyObject *__pyx_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_5TRule_4__str__(struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self); /* proto */
 static int __pyx_pf_4cdec_5_cdec_5MRule___init__(struct __pyx_obj_4cdec_5_cdec_MRule *__pyx_v_self, PyObject *__pyx_v_lhs, PyObject *__pyx_v_rhs, PyObject *__pyx_v_scores); /* proto */
-static void __pyx_pf_4cdec_5_cdec_7Grammar___dealloc__(struct __pyx_obj_4cdec_5_cdec_Grammar *__pyx_v_self); /* proto */
+static void __pyx_pf_4cdec_5_cdec_7Grammar___dealloc__(CYTHON_UNUSED struct __pyx_obj_4cdec_5_cdec_Grammar *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_7Grammar_2__iter__(struct __pyx_obj_4cdec_5_cdec_Grammar *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_7Grammar_4name___get__(struct __pyx_obj_4cdec_5_cdec_Grammar *__pyx_v_self); /* proto */
 static int __pyx_pf_4cdec_5_cdec_7Grammar_4name_2__set__(struct __pyx_obj_4cdec_5_cdec_Grammar *__pyx_v_self, PyObject *__pyx_v_name); /* proto */
@@ -2166,18 +2131,21 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_10viterbi_joshua(struct __py
 static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_12kbest(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_size); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_15kbest_trees(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_size); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_18kbest_features(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_size); /* proto */
-static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_21sample(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, unsigned int __pyx_v_n); /* proto */
-static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_24sample_trees(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, unsigned int __pyx_v_n); /* proto */
-static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_27intersect(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_inp); /* proto */
-static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_29prune(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_beam_alpha, PyObject *__pyx_v_density, PyObject *__pyx_v_kwargs); /* proto */
-static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_31lattice(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_33plf(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_35reweight(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_weights); /* proto */
+static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_21unique_kbest(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_size); /* proto */
+static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_24unique_kbest_trees(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_size); /* proto */
+static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_27unique_kbest_features(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_size); /* proto */
+static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_30sample(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, unsigned int __pyx_v_n); /* proto */
+static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_33sample_trees(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, unsigned int __pyx_v_n); /* proto */
+static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_36intersect(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_inp); /* proto */
+static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_38prune(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_beam_alpha, PyObject *__pyx_v_density, PyObject *__pyx_v_kwargs); /* proto */
+static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_40lattice(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_42plf(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_44reweight(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_weights); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_5edges___get__(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_5nodes___get__(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_4goal___get__(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_6npaths___get__(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_37inside_outside(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_46inside_outside(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self); /* proto */
 static Py_ssize_t __pyx_pf_4cdec_5_cdec_14HypergraphEdge___len__(struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_14HypergraphEdge_9head_node___get__(struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_14HypergraphEdge_10tail_nodes___get__(struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *__pyx_v_self); /* proto */
@@ -2197,7 +2165,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_14HypergraphNode_3cat___get__(struct __py
 static PyObject *__pyx_pf_4cdec_5_cdec_14HypergraphNode___richcmp__(struct __pyx_obj_4cdec_5_cdec_HypergraphNode *__pyx_v_x, struct __pyx_obj_4cdec_5_cdec_HypergraphNode *__pyx_v_y, int __pyx_v_op); /* proto */
 static int __pyx_pf_4cdec_5_cdec_7Lattice___cinit__(struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self); /* proto */
 static int __pyx_pf_4cdec_5_cdec_7Lattice_2__init__(struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self, PyObject *__pyx_v_inp); /* proto */
-static void __pyx_pf_4cdec_5_cdec_7Lattice_4__dealloc__(struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self); /* proto */
+static void __pyx_pf_4cdec_5_cdec_7Lattice_4__dealloc__(CYTHON_UNUSED struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_7Lattice_6__getitem__(struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self, int __pyx_v_index); /* proto */
 static int __pyx_pf_4cdec_5_cdec_7Lattice_8__setitem__(struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self, int __pyx_v_index, PyObject *__pyx_v_arcs); /* proto */
 static Py_ssize_t __pyx_pf_4cdec_5_cdec_7Lattice_10__len__(struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self); /* proto */
@@ -2211,7 +2179,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_9Candidate_5words___get__(struct __pyx_ob
 static PyObject *__pyx_pf_4cdec_5_cdec_9Candidate_4fmap___get__(struct __pyx_obj_4cdec_5_cdec_Candidate *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_9Candidate_5score___get__(struct __pyx_obj_4cdec_5_cdec_Candidate *__pyx_v_self); /* proto */
 static int __pyx_pf_4cdec_5_cdec_9Candidate_5score_2__set__(struct __pyx_obj_4cdec_5_cdec_Candidate *__pyx_v_self, PyObject *__pyx_v_value); /* proto */
-static void __pyx_pf_4cdec_5_cdec_15SufficientStats___dealloc__(struct __pyx_obj_4cdec_5_cdec_SufficientStats *__pyx_v_self); /* proto */
+static void __pyx_pf_4cdec_5_cdec_15SufficientStats___dealloc__(CYTHON_UNUSED struct __pyx_obj_4cdec_5_cdec_SufficientStats *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_15SufficientStats_5score___get__(struct __pyx_obj_4cdec_5_cdec_SufficientStats *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_15SufficientStats_6detail___get__(struct __pyx_obj_4cdec_5_cdec_SufficientStats *__pyx_v_self); /* proto */
 static Py_ssize_t __pyx_pf_4cdec_5_cdec_15SufficientStats_2__len__(struct __pyx_obj_4cdec_5_cdec_SufficientStats *__pyx_v_self); /* proto */
@@ -2220,16 +2188,16 @@ static PyObject *__pyx_pf_4cdec_5_cdec_15SufficientStats_7__getitem__(struct __p
 static PyObject *__pyx_pf_4cdec_5_cdec_15SufficientStats_9__iadd__(struct __pyx_obj_4cdec_5_cdec_SufficientStats *__pyx_v_self, struct __pyx_obj_4cdec_5_cdec_SufficientStats *__pyx_v_other); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_15SufficientStats_11__add__(PyObject *__pyx_v_x, PyObject *__pyx_v_y); /* proto */
 static int __pyx_pf_4cdec_5_cdec_12CandidateSet___cinit__(struct __pyx_obj_4cdec_5_cdec_CandidateSet *__pyx_v_self, struct __pyx_obj_4cdec_5_cdec_SegmentEvaluator *__pyx_v_evaluator); /* proto */
-static void __pyx_pf_4cdec_5_cdec_12CandidateSet_2__dealloc__(struct __pyx_obj_4cdec_5_cdec_CandidateSet *__pyx_v_self); /* proto */
+static void __pyx_pf_4cdec_5_cdec_12CandidateSet_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_4cdec_5_cdec_CandidateSet *__pyx_v_self); /* proto */
 static Py_ssize_t __pyx_pf_4cdec_5_cdec_12CandidateSet_4__len__(struct __pyx_obj_4cdec_5_cdec_CandidateSet *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_12CandidateSet_6__getitem__(struct __pyx_obj_4cdec_5_cdec_CandidateSet *__pyx_v_self, int __pyx_v_k); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_12CandidateSet_8__iter__(struct __pyx_obj_4cdec_5_cdec_CandidateSet *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_12CandidateSet_11add_kbest(struct __pyx_obj_4cdec_5_cdec_CandidateSet *__pyx_v_self, struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_hypergraph, unsigned int __pyx_v_k); /* proto */
-static void __pyx_pf_4cdec_5_cdec_16SegmentEvaluator___dealloc__(struct __pyx_obj_4cdec_5_cdec_SegmentEvaluator *__pyx_v_self); /* proto */
+static void __pyx_pf_4cdec_5_cdec_16SegmentEvaluator___dealloc__(CYTHON_UNUSED struct __pyx_obj_4cdec_5_cdec_SegmentEvaluator *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_16SegmentEvaluator_2evaluate(struct __pyx_obj_4cdec_5_cdec_SegmentEvaluator *__pyx_v_self, PyObject *__pyx_v_sentence); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_16SegmentEvaluator_4candidate_set(struct __pyx_obj_4cdec_5_cdec_SegmentEvaluator *__pyx_v_self); /* proto */
 static int __pyx_pf_4cdec_5_cdec_6Scorer___cinit__(struct __pyx_obj_4cdec_5_cdec_Scorer *__pyx_v_self, PyObject *__pyx_v_name); /* proto */
-static void __pyx_pf_4cdec_5_cdec_6Scorer_2__dealloc__(struct __pyx_obj_4cdec_5_cdec_Scorer *__pyx_v_self); /* proto */
+static void __pyx_pf_4cdec_5_cdec_6Scorer_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_4cdec_5_cdec_Scorer *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_6Scorer_4__call__(struct __pyx_obj_4cdec_5_cdec_Scorer *__pyx_v_self, PyObject *__pyx_v_refs); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_6Scorer_6__str__(struct __pyx_obj_4cdec_5_cdec_Scorer *__pyx_v_self); /* proto */
 static int __pyx_pf_4cdec_5_cdec_6Metric___cinit__(struct __pyx_obj_4cdec_5_cdec_Metric *__pyx_v_self); /* proto */
@@ -2240,377 +2208,376 @@ static PyObject *__pyx_pf_4cdec_5_cdec_2set_silent(CYTHON_UNUSED PyObject *__pyx
 static PyObject *__pyx_pf_4cdec_5_cdec_4_make_config(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_config); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_7Decoder_8__init___genexpr(PyObject *__pyx_self); /* proto */
 static int __pyx_pf_4cdec_5_cdec_7Decoder___init__(struct __pyx_obj_4cdec_5_cdec_Decoder *__pyx_v_self, PyObject *__pyx_v_config_str, PyObject *__pyx_v_config); /* proto */
-static void __pyx_pf_4cdec_5_cdec_7Decoder_2__dealloc__(struct __pyx_obj_4cdec_5_cdec_Decoder *__pyx_v_self); /* proto */
+static void __pyx_pf_4cdec_5_cdec_7Decoder_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_4cdec_5_cdec_Decoder *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_7Decoder_7weights___get__(struct __pyx_obj_4cdec_5_cdec_Decoder *__pyx_v_self); /* proto */
 static int __pyx_pf_4cdec_5_cdec_7Decoder_7weights_2__set__(struct __pyx_obj_4cdec_5_cdec_Decoder *__pyx_v_self, PyObject *__pyx_v_weights); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_7Decoder_9formalism___get__(struct __pyx_obj_4cdec_5_cdec_Decoder *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_7Decoder_4read_weights(struct __pyx_obj_4cdec_5_cdec_Decoder *__pyx_v_self, PyObject *__pyx_v_weights); /* proto */
 static PyObject *__pyx_pf_4cdec_5_cdec_7Decoder_6translate(struct __pyx_obj_4cdec_5_cdec_Decoder *__pyx_v_self, PyObject *__pyx_v_sentence, PyObject *__pyx_v_grammar); /* proto */
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_24___iter__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec_TRule(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec_MRule(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_4cdec_5_cdec_DenseVector(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec_SufficientStats(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_23_lines(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_27___init__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_21___iter__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec_Metric(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec_Candidate(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_4cdec_5_cdec_SparseVector(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_26__make_config(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_4cdec_5_cdec_NT(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec_Lattice(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_15_sample_trees(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec_HypergraphEdge(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_2__phrase(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec_Scorer(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec_HypergraphNode(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_10_kbest_features(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_4cdec_5_cdec_NTRef(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec_TRule(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec_MRule(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_4cdec_5_cdec_Grammar(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec_TextGrammar(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_4cdec_5_cdec_Hypergraph(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec_HypergraphEdge(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec_HypergraphNode(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec_Lattice(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec_Candidate(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec_SufficientStats(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_4cdec_5_cdec_CandidateSet(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_22_todot(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_5___str__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_4cdec_5_cdec_SegmentEvaluator(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec_Scorer(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec_Metric(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec_Decoder(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct____iter__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_1___iter__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_2__phrase(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_16___get__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_20___get__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_28_genexpr(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_3_genexpr(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_4___get__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_5___str__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_6_genexpr(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_7___iter__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_8_kbest(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_10_kbest_features(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_11_sample(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_12_sample_trees(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_13___get__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_14___get__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_15___get__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_16___get__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_18___get__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_7___iter__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_19___get__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec_TextGrammar(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_25___iter__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec_Decoder(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct____iter__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_14_sample(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_17___get__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_18___iter__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_19_todot(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_20_lines(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_21___iter__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_22___iter__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_23__make_config(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_24___init__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_25_genexpr(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static char __pyx_k_a[] = "a";
-static char __pyx_k_d[] = "[%d]";
-static char __pyx_k_e[] = "e";
-static char __pyx_k_f[] = "f";
-static char __pyx_k_i[] = "i";
-static char __pyx_k_k[] = "k";
-static char __pyx_k_s[] = "[%s]";
-static char __pyx_k__4[] = " ";
-static char __pyx_k_pb[] = "pb";
-static char __pyx_k_sa[] = "_sa";
-static char __pyx_k_yn[] = "yn";
-static char __pyx_k_CER[] = "CER";
-static char __pyx_k_SSK[] = "SSK";
-static char __pyx_k_TER[] = "TER";
-static char __pyx_k__10[] = "\"";
-static char __pyx_k__11[] = "\\\"";
-static char __pyx_k__13[] = "}";
-static char __pyx_k__16[] = "\n";
-static char __pyx_k__20[] = "#";
-static char __pyx_k__23[] = "*";
-static char __pyx_k_cat[] = "cat";
-static char __pyx_k_doc[] = "__doc__";
-static char __pyx_k_dot[] = "dot";
-static char __pyx_k_fst[] = "fst";
-static char __pyx_k_get[] = "get";
-static char __pyx_k_hyp[] = "hyp";
-static char __pyx_k_inp[] = "inp";
-static char __pyx_k_key[] = "key";
-static char __pyx_k_lhs[] = "lhs";
-static char __pyx_k_plf[] = "plf";
-static char __pyx_k_ref[] = "ref";
-static char __pyx_k_rhs[] = "rhs";
-static char __pyx_k_s_d[] = "[%s,%d]";
-static char __pyx_k_s_s[] = "%s=%s";
-static char __pyx_k_BLEU[] = "BLEU";
-static char __pyx_k_QCRI[] = "QCRI";
-static char __pyx_k_args[] = "args";
-static char __pyx_k_dict[] = "__dict__";
-static char __pyx_k_eval[] = "eval";
-static char __pyx_k_exit[] = "__exit__";
-static char __pyx_k_info[] = "info";
-static char __pyx_k_init[] = "__init__";
-static char __pyx_k_join[] = "join";
-static char __pyx_k_main[] = "__main__";
-static char __pyx_k_name[] = "name";
-static char __pyx_k_open[] = "open";
-static char __pyx_k_refs[] = "refs";
-static char __pyx_k_scfg[] = "scfg";
-static char __pyx_k_self[] = "self";
-static char __pyx_k_send[] = "send";
-static char __pyx_k_span[] = "span";
-static char __pyx_k_test[] = "__test__";
-static char __pyx_k_text[] = "text";
-static char __pyx_k_utf8[] = "utf8";
-static char __pyx_k_class[] = "__class__";
-static char __pyx_k_close[] = "close";
-static char __pyx_k_delta[] = "delta";
-static char __pyx_k_enter[] = "__enter__";
-static char __pyx_k_items[] = "items";
-static char __pyx_k_label[] = "label";
-static char __pyx_k_lines[] = "lines";
-static char __pyx_k_range[] = "range";
-static char __pyx_k_rules[] = "rules";
-static char __pyx_k_s_s_2[] = "%s %s";
-static char __pyx_k_s_s_3[] = "%s = %s";
-static char __pyx_k_score[] = "score";
-static char __pyx_k_split[] = "split";
-static char __pyx_k_strip[] = "strip";
-static char __pyx_k_super[] = "super";
-static char __pyx_k_throw[] = "throw";
-static char __pyx_k_value[] = "value";
-static char __pyx_k_append[] = "append";
-static char __pyx_k_config[] = "config";
-static char __pyx_k_csplit[] = "csplit";
-static char __pyx_k_encode[] = "encode";
-static char __pyx_k_format[] = "format";
-static char __pyx_k_import[] = "__import__";
-static char __pyx_k_module[] = "__module__";
-static char __pyx_k_name_2[] = "__name__";
-static char __pyx_k_phrase[] = "_phrase";
-static char __pyx_k_scores[] = "scores";
-static char __pyx_k_tagger[] = "tagger";
-static char __pyx_k_weight[] = "weight";
-static char __pyx_k_density[] = "density";
-static char __pyx_k_genexpr[] = "genexpr";
-static char __pyx_k_grammar[] = "grammar";
-static char __pyx_k_prepare[] = "__prepare__";
-static char __pyx_k_replace[] = "replace";
-static char __pyx_k_s_s_s_s[] = "%s ||| %s ||| %s ||| %s";
-static char __pyx_k_IBM_BLEU[] = "IBM_BLEU";
-static char __pyx_k_KeyError[] = "KeyError";
-static char __pyx_k_encoding[] = "encoding";
-static char __pyx_k_evaluate[] = "evaluate";
-static char __pyx_k_in_edges[] = "in_edges";
-static char __pyx_k_lexalign[] = "lexalign";
-static char __pyx_k_lextrans[] = "lextrans";
-static char __pyx_k_phrase_2[] = "phrase";
-static char __pyx_k_qualname[] = "__qualname__";
-static char __pyx_k_sentence[] = "sentence";
-static char __pyx_k_Exception[] = "Exception";
-static char __pyx_k_QCRI_BLEU[] = "QCRI_BLEU";
-static char __pyx_k_TypeError[] = "TypeError";
-static char __pyx_k_enumerate[] = "enumerate";
-static char __pyx_k_evaluator[] = "evaluator";
-static char __pyx_k_formalism[] = "formalism";
-static char __pyx_k_metaclass[] = "__metaclass__";
-static char __pyx_k_IndexError[] = "IndexError";
-static char __pyx_k_ValueError[] = "ValueError";
-static char __pyx_k_alignments[] = "alignments";
-static char __pyx_k_beam_alpha[] = "beam_alpha";
-static char __pyx_k_cdec__cdec[] = "cdec._cdec";
-static char __pyx_k_config_str[] = "config_str";
-static char __pyx_k_hypergraph[] = "hypergraph";
-static char __pyx_k_pyx_vtable[] = "__pyx_vtable__";
-static char __pyx_k_rankdir_LR[] = "rankdir = LR;";
-static char __pyx_k_set_silent[] = "set_silent";
-static char __pyx_k_startswith[] = "startswith";
-static char __pyx_k_ParseFailed[] = "ParseFailed";
-static char __pyx_k_cdec_sa__sa[] = "cdec.sa._sa";
-static char __pyx_k_d_d_label_s[] = "%d -> %d [label=\"%s\"];";
-static char __pyx_k_make_config[] = "_make_config";
-static char __pyx_k_InvalidConfig[] = "InvalidConfig";
-static char __pyx_k_NotImplemented[] = "NotImplemented";
-static char __pyx_k_digraph_lattice[] = "digraph lattice {";
-static char __pyx_k_node_shape_circle[] = "node [shape=circle];";
-static char __pyx_k_todot_locals_lines[] = "todot.<locals>.lines";
-static char __pyx_k_formalism_s_unknown[] = "formalism \"%s\" unknown";
-static char __pyx_k_d_shape_doublecircle[] = "%d [shape=doublecircle]";
-static char __pyx_k_csplit_preserve_full_word[] = "csplit_preserve_full_word";
-static char __pyx_k_lattice_index_out_of_range[] = "lattice index out of range";
-static char __pyx_k_Cannot_convert_type_s_to_str[] = "Cannot convert type %s to str";
-static char __pyx_k_cannot_create_lattice_from_s[] = "cannot create lattice from %s";
-static char __pyx_k_Cannot_translate_input_type_s[] = "Cannot translate input type %s";
-static char __pyx_k_cannot_reweight_hypergraph_with[] = "cannot reweight hypergraph with %s";
-static char __pyx_k_usr0_home_cdyer_cdec_python_cde[] = "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi";
-static char __pyx_k_candidate_set_index_out_of_range[] = "candidate set index out of range";
-static char __pyx_k_cannot_initialize_weights_with_s[] = "cannot initialize weights with %s";
-static char __pyx_k_cannot_intersect_hypergraph_with[] = "cannot intersect hypergraph with %s";
-static char __pyx_k_cannot_take_the_dot_product_of_s[] = "cannot take the dot product of %s and SparseVector";
-static char __pyx_k_comparison_not_implemented_for_H[] = "comparison not implemented for HypergraphEdge";
-static char __pyx_k_comparison_not_implemented_for_S[] = "comparison not implemented for SparseVector";
-static char __pyx_k_sufficient_stats_vector_index_ou[] = "sufficient stats vector index out of range";
-static char __pyx_k_the_grammar_should_contain_TRule[] = "the grammar should contain TRule objects";
-static char __pyx_k_usr0_home_cdyer_cdec_python_cde_2[] = "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi";
-static char __pyx_k_usr0_home_cdyer_cdec_python_cde_3[] = "/usr0/home/cdyer/cdec/python/cdec/_cdec.pyx";
-static char __pyx_k_comparison_not_implemented_for_H_2[] = "comparison not implemented for HypergraphNode";
-static PyObject *__pyx_n_s_BLEU;
-static PyObject *__pyx_n_s_CER;
-static PyObject *__pyx_kp_s_Cannot_translate_input_type_s;
-static PyObject *__pyx_n_s_Exception;
-static PyObject *__pyx_n_s_IBM_BLEU;
-static PyObject *__pyx_n_s_IndexError;
-static PyObject *__pyx_n_s_InvalidConfig;
-static PyObject *__pyx_n_s_KeyError;
-static PyObject *__pyx_n_s_NotImplemented;
-static PyObject *__pyx_n_s_ParseFailed;
-static PyObject *__pyx_n_s_QCRI;
-static PyObject *__pyx_n_s_QCRI_BLEU;
-static PyObject *__pyx_n_s_SSK;
-static PyObject *__pyx_n_s_TER;
-static PyObject *__pyx_n_s_TypeError;
-static PyObject *__pyx_n_s_ValueError;
-static PyObject *__pyx_kp_s__10;
-static PyObject *__pyx_kp_s__11;
-static PyObject *__pyx_kp_s__13;
-static PyObject *__pyx_kp_s__16;
-static PyObject *__pyx_kp_s__20;
-static PyObject *__pyx_n_s__23;
-static PyObject *__pyx_kp_s__4;
-static PyObject *__pyx_n_s_a;
-static PyObject *__pyx_n_s_alignments;
-static PyObject *__pyx_n_s_append;
-static PyObject *__pyx_n_s_args;
-static PyObject *__pyx_n_s_beam_alpha;
-static PyObject *__pyx_kp_s_candidate_set_index_out_of_range;
-static PyObject *__pyx_kp_s_cannot_create_lattice_from_s;
-static PyObject *__pyx_kp_s_cannot_initialize_weights_with_s;
-static PyObject *__pyx_kp_s_cannot_intersect_hypergraph_with;
-static PyObject *__pyx_kp_s_cannot_reweight_hypergraph_with;
-static PyObject *__pyx_kp_s_cannot_take_the_dot_product_of_s;
-static PyObject *__pyx_n_s_cat;
-static PyObject *__pyx_n_s_cdec__cdec;
-static PyObject *__pyx_n_s_cdec_sa__sa;
-static PyObject *__pyx_n_s_class;
-static PyObject *__pyx_n_s_close;
-static PyObject *__pyx_kp_s_comparison_not_implemented_for_H;
-static PyObject *__pyx_kp_s_comparison_not_implemented_for_H_2;
-static PyObject *__pyx_kp_s_comparison_not_implemented_for_S;
-static PyObject *__pyx_n_s_config;
-static PyObject *__pyx_n_s_config_str;
-static PyObject *__pyx_n_s_csplit;
-static PyObject *__pyx_n_s_csplit_preserve_full_word;
-static PyObject *__pyx_kp_s_d;
-static PyObject *__pyx_kp_s_d_d_label_s;
-static PyObject *__pyx_kp_s_d_shape_doublecircle;
-static PyObject *__pyx_n_s_delta;
-static PyObject *__pyx_n_s_density;
-static PyObject *__pyx_n_s_dict;
-static PyObject *__pyx_kp_s_digraph_lattice;
-static PyObject *__pyx_n_s_doc;
-static PyObject *__pyx_n_s_dot;
-static PyObject *__pyx_n_s_e;
-static PyObject *__pyx_n_s_encode;
-static PyObject *__pyx_n_s_encoding;
-static PyObject *__pyx_n_s_enter;
-static PyObject *__pyx_n_s_enumerate;
-static PyObject *__pyx_n_s_eval;
-static PyObject *__pyx_n_s_evaluate;
-static PyObject *__pyx_n_s_evaluator;
-static PyObject *__pyx_n_s_exit;
-static PyObject *__pyx_n_s_f;
-static PyObject *__pyx_n_s_formalism;
-static PyObject *__pyx_kp_s_formalism_s_unknown;
-static PyObject *__pyx_n_s_format;
-static PyObject *__pyx_n_s_fst;
-static PyObject *__pyx_n_s_genexpr;
-static PyObject *__pyx_n_s_get;
-static PyObject *__pyx_n_s_grammar;
-static PyObject *__pyx_n_s_hyp;
-static PyObject *__pyx_n_s_hypergraph;
-static PyObject *__pyx_n_s_i;
-static PyObject *__pyx_n_s_import;
-static PyObject *__pyx_n_s_in_edges;
-static PyObject *__pyx_n_s_info;
-static PyObject *__pyx_n_s_init;
-static PyObject *__pyx_n_s_inp;
-static PyObject *__pyx_n_s_items;
-static PyObject *__pyx_n_s_join;
-static PyObject *__pyx_n_s_k;
-static PyObject *__pyx_n_s_key;
-static PyObject *__pyx_n_s_label;
-static PyObject *__pyx_kp_s_lattice_index_out_of_range;
-static PyObject *__pyx_n_s_lexalign;
-static PyObject *__pyx_n_s_lextrans;
-static PyObject *__pyx_n_s_lhs;
-static PyObject *__pyx_n_s_lines;
-static PyObject *__pyx_n_s_main;
-static PyObject *__pyx_n_s_make_config;
-static PyObject *__pyx_n_s_metaclass;
-static PyObject *__pyx_n_s_module;
-static PyObject *__pyx_n_s_name;
-static PyObject *__pyx_n_s_name_2;
-static PyObject *__pyx_kp_s_node_shape_circle;
-static PyObject *__pyx_n_s_open;
-static PyObject *__pyx_n_s_pb;
-static PyObject *__pyx_n_s_phrase;
-static PyObject *__pyx_n_s_phrase_2;
-static PyObject *__pyx_n_s_plf;
-static PyObject *__pyx_n_s_prepare;
-static PyObject *__pyx_n_s_pyx_vtable;
-static PyObject *__pyx_n_s_qualname;
-static PyObject *__pyx_n_s_range;
-static PyObject *__pyx_kp_s_rankdir_LR;
-static PyObject *__pyx_n_s_ref;
-static PyObject *__pyx_n_s_refs;
-static PyObject *__pyx_n_s_replace;
-static PyObject *__pyx_n_s_rhs;
-static PyObject *__pyx_n_s_rules;
-static PyObject *__pyx_kp_s_s;
-static PyObject *__pyx_kp_s_s_d;
-static PyObject *__pyx_kp_s_s_s;
-static PyObject *__pyx_kp_s_s_s_2;
-static PyObject *__pyx_kp_s_s_s_3;
-static PyObject *__pyx_kp_s_s_s_s_s;
-static PyObject *__pyx_n_s_sa;
-static PyObject *__pyx_n_s_scfg;
-static PyObject *__pyx_n_s_score;
-static PyObject *__pyx_n_s_scores;
-static PyObject *__pyx_n_s_self;
-static PyObject *__pyx_n_s_send;
-static PyObject *__pyx_n_s_sentence;
-static PyObject *__pyx_n_s_set_silent;
-static PyObject *__pyx_n_s_span;
-static PyObject *__pyx_n_s_split;
-static PyObject *__pyx_n_s_startswith;
-static PyObject *__pyx_n_s_strip;
-static PyObject *__pyx_kp_s_sufficient_stats_vector_index_ou;
-static PyObject *__pyx_n_s_super;
-static PyObject *__pyx_n_s_tagger;
-static PyObject *__pyx_n_s_test;
-static PyObject *__pyx_n_s_text;
-static PyObject *__pyx_kp_s_the_grammar_should_contain_TRule;
-static PyObject *__pyx_n_s_throw;
-static PyObject *__pyx_n_s_todot_locals_lines;
-static PyObject *__pyx_kp_s_usr0_home_cdyer_cdec_python_cde;
-static PyObject *__pyx_kp_s_usr0_home_cdyer_cdec_python_cde_2;
-static PyObject *__pyx_kp_s_usr0_home_cdyer_cdec_python_cde_3;
-static PyObject *__pyx_n_s_utf8;
-static PyObject *__pyx_n_s_value;
-static PyObject *__pyx_n_s_weight;
-static PyObject *__pyx_n_s_yn;
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_6_genexpr(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_4___get__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_1___iter__(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static char __pyx_k_1[] = "Cannot convert type %s to str";
+static char __pyx_k_3[] = "cannot take the dot product of %s and SparseVector";
+static char __pyx_k_4[] = "comparison not implemented for SparseVector";
+static char __pyx_k_7[] = " ";
+static char __pyx_k_8[] = "[%s,%d]";
+static char __pyx_k_9[] = "[%s]";
+static char __pyx_k_10[] = "[%d]";
+static char __pyx_k_11[] = "%s=%s";
+static char __pyx_k_12[] = "%s ||| %s ||| %s ||| %s";
+static char __pyx_k_13[] = "the grammar should contain TRule objects";
+static char __pyx_k_15[] = "cannot intersect hypergraph with %s";
+static char __pyx_k_16[] = "csplit_preserve_full_word";
+static char __pyx_k_17[] = "cannot reweight hypergraph with %s";
+static char __pyx_k_18[] = "comparison not implemented for HypergraphEdge";
+static char __pyx_k_20[] = "comparison not implemented for HypergraphNode";
+static char __pyx_k_22[] = "cannot create lattice from %s";
+static char __pyx_k_23[] = "lattice index out of range";
+static char __pyx_k_26[] = "digraph lattice {";
+  static char __pyx_k_27[] = "rankdir = LR;";
+  static char __pyx_k_28[] = "node [shape=circle];";
+  static char __pyx_k_29[] = "%d -> %d [label=\"%s\"];";
+  static char __pyx_k_30[] = "\"";
+  static char __pyx_k_31[] = "\\\"";
+  static char __pyx_k_33[] = "%d [shape=doublecircle]";
+static char __pyx_k_34[] = "}";
+static char __pyx_k_37[] = "/usr0/home/austinma/git/cdec/python/cdec/lattice.pxi";
+static char __pyx_k_38[] = "Lattice.todot.<locals>.lines";
+static char __pyx_k_39[] = "cdec._cdec";
+static char __pyx_k_40[] = "\n";
+static char __pyx_k_42[] = "sufficient stats vector index out of range";
+static char __pyx_k_44[] = "candidate set index out of range";
+static char __pyx_k_46[] = "%s %s";
+static char __pyx_k_47[] = "%s = %s";
+static char __pyx_k_48[] = "formalism \"%s\" unknown";
+static char __pyx_k_49[] = "cannot initialize weights with %s";
+static char __pyx_k_50[] = "#";
+static char __pyx_k_53[] = "Cannot translate input type %s";
+static char __pyx_k_54[] = "cdec.sa._sa";
+static char __pyx_k_55[] = "*";
+static char __pyx_k_58[] = "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi";
+static char __pyx_k_66[] = "/usr0/home/austinma/git/cdec/python/cdec/_cdec.pyx";
+static char __pyx_k__a[] = "a";
+static char __pyx_k__e[] = "e";
+static char __pyx_k__f[] = "f";
+static char __pyx_k__i[] = "i";
+static char __pyx_k__k[] = "k";
+static char __pyx_k__pb[] = "pb";
+static char __pyx_k__yn[] = "yn";
+static char __pyx_k__CER[] = "CER";
+static char __pyx_k__SSK[] = "SSK";
+static char __pyx_k__TER[] = "TER";
+static char __pyx_k___sa[] = "_sa";
+static char __pyx_k__cat[] = "cat";
+static char __pyx_k__dot[] = "dot";
+static char __pyx_k__fst[] = "fst";
+static char __pyx_k__get[] = "get";
+static char __pyx_k__hyp[] = "hyp";
+static char __pyx_k__inp[] = "inp";
+static char __pyx_k__key[] = "key";
+static char __pyx_k__lhs[] = "lhs";
+static char __pyx_k__plf[] = "plf";
+static char __pyx_k__ref[] = "ref";
+static char __pyx_k__rhs[] = "rhs";
+static char __pyx_k__BLEU[] = "BLEU";
+static char __pyx_k__QCRI[] = "QCRI";
+static char __pyx_k__args[] = "args";
+static char __pyx_k__eval[] = "eval";
+static char __pyx_k__info[] = "info";
+static char __pyx_k__join[] = "join";
+static char __pyx_k__name[] = "name";
+static char __pyx_k__open[] = "open";
+static char __pyx_k__refs[] = "refs";
+static char __pyx_k__scfg[] = "scfg";
+static char __pyx_k__self[] = "self";
+static char __pyx_k__send[] = "send";
+static char __pyx_k__span[] = "span";
+static char __pyx_k__text[] = "text";
+static char __pyx_k__utf8[] = "utf8";
+static char __pyx_k__close[] = "close";
+static char __pyx_k__delta[] = "delta";
+static char __pyx_k__items[] = "items";
+static char __pyx_k__label[] = "label";
+static char __pyx_k__lines[] = "lines";
+static char __pyx_k__range[] = "range";
+static char __pyx_k__rules[] = "rules";
+static char __pyx_k__score[] = "score";
+static char __pyx_k__split[] = "split";
+static char __pyx_k__strip[] = "strip";
+static char __pyx_k__super[] = "super";
+static char __pyx_k__throw[] = "throw";
+static char __pyx_k__value[] = "value";
+static char __pyx_k__append[] = "append";
+static char __pyx_k__config[] = "config";
+static char __pyx_k__csplit[] = "csplit";
+static char __pyx_k__encode[] = "encode";
+static char __pyx_k__format[] = "format";
+static char __pyx_k__phrase[] = "phrase";
+static char __pyx_k__scores[] = "scores";
+static char __pyx_k__tagger[] = "tagger";
+static char __pyx_k__weight[] = "weight";
+static char __pyx_k___phrase[] = "_phrase";
+static char __pyx_k__density[] = "density";
+static char __pyx_k__genexpr[] = "genexpr";
+static char __pyx_k__grammar[] = "grammar";
+static char __pyx_k__replace[] = "replace";
+static char __pyx_k__IBM_BLEU[] = "IBM_BLEU";
+static char __pyx_k__KeyError[] = "KeyError";
+static char __pyx_k____dict__[] = "__dict__";
+static char __pyx_k____exit__[] = "__exit__";
+static char __pyx_k____init__[] = "__init__";
+static char __pyx_k____main__[] = "__main__";
+static char __pyx_k____name__[] = "__name__";
+static char __pyx_k____test__[] = "__test__";
+static char __pyx_k__encoding[] = "encoding";
+static char __pyx_k__evaluate[] = "evaluate";
+static char __pyx_k__in_edges[] = "in_edges";
+static char __pyx_k__lexalign[] = "lexalign";
+static char __pyx_k__lextrans[] = "lextrans";
+static char __pyx_k__sentence[] = "sentence";
+static char __pyx_k__Exception[] = "Exception";
+static char __pyx_k__QCRI_BLEU[] = "QCRI_BLEU";
+static char __pyx_k__TypeError[] = "TypeError";
+static char __pyx_k____class__[] = "__class__";
+static char __pyx_k____enter__[] = "__enter__";
+static char __pyx_k__enumerate[] = "enumerate";
+static char __pyx_k__evaluator[] = "evaluator";
+static char __pyx_k__formalism[] = "formalism";
+static char __pyx_k__IndexError[] = "IndexError";
+static char __pyx_k__ValueError[] = "ValueError";
+static char __pyx_k____import__[] = "__import__";
+static char __pyx_k____module__[] = "__module__";
+static char __pyx_k__alignments[] = "alignments";
+static char __pyx_k__beam_alpha[] = "beam_alpha";
+static char __pyx_k__config_str[] = "config_str";
+static char __pyx_k__hypergraph[] = "hypergraph";
+static char __pyx_k__set_silent[] = "set_silent";
+static char __pyx_k__startswith[] = "startswith";
+static char __pyx_k__ParseFailed[] = "ParseFailed";
+static char __pyx_k____qualname__[] = "__qualname__";
+static char __pyx_k___make_config[] = "_make_config";
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+static PyObject *__pyx_kp_s_11;
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+static PyObject *__pyx_kp_s_13;
+static PyObject *__pyx_kp_s_15;
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+static PyObject *__pyx_kp_s_18;
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+static PyObject *__pyx_kp_s_31;
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+static PyObject *__pyx_kp_s_34;
+static PyObject *__pyx_kp_s_37;
+static PyObject *__pyx_n_s_38;
+static PyObject *__pyx_n_s_39;
+static PyObject *__pyx_kp_s_4;
+static PyObject *__pyx_kp_s_40;
+static PyObject *__pyx_kp_s_42;
+static PyObject *__pyx_kp_s_44;
+static PyObject *__pyx_kp_s_46;
+static PyObject *__pyx_kp_s_47;
+static PyObject *__pyx_kp_s_48;
+static PyObject *__pyx_kp_s_49;
+static PyObject *__pyx_kp_s_50;
+static PyObject *__pyx_kp_s_53;
+static PyObject *__pyx_n_s_54;
+static PyObject *__pyx_n_s_55;
+static PyObject *__pyx_kp_s_58;
+static PyObject *__pyx_kp_s_66;
+static PyObject *__pyx_kp_s_7;
+static PyObject *__pyx_kp_s_8;
+static PyObject *__pyx_kp_s_9;
+static PyObject *__pyx_n_s__BLEU;
+static PyObject *__pyx_n_s__CER;
+static PyObject *__pyx_n_s__Exception;
+static PyObject *__pyx_n_s__IBM_BLEU;
+static PyObject *__pyx_n_s__IndexError;
+static PyObject *__pyx_n_s__InvalidConfig;
+static PyObject *__pyx_n_s__KeyError;
+static PyObject *__pyx_n_s__NotImplemented;
+static PyObject *__pyx_n_s__ParseFailed;
+static PyObject *__pyx_n_s__QCRI;
+static PyObject *__pyx_n_s__QCRI_BLEU;
+static PyObject *__pyx_n_s__SSK;
+static PyObject *__pyx_n_s__TER;
+static PyObject *__pyx_n_s__TypeError;
+static PyObject *__pyx_n_s__ValueError;
+static PyObject *__pyx_n_s____class__;
+static PyObject *__pyx_n_s____dict__;
+static PyObject *__pyx_n_s____enter__;
+static PyObject *__pyx_n_s____exit__;
+static PyObject *__pyx_n_s____import__;
+static PyObject *__pyx_n_s____init__;
+static PyObject *__pyx_n_s____main__;
+static PyObject *__pyx_n_s____metaclass__;
+static PyObject *__pyx_n_s____module__;
+static PyObject *__pyx_n_s____name__;
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+static PyObject *__pyx_n_s____qualname__;
+static PyObject *__pyx_n_s____test__;
+static PyObject *__pyx_n_s___make_config;
+static PyObject *__pyx_n_s___phrase;
+static PyObject *__pyx_n_s___sa;
+static PyObject *__pyx_n_s__a;
+static PyObject *__pyx_n_s__alignments;
+static PyObject *__pyx_n_s__append;
+static PyObject *__pyx_n_s__args;
+static PyObject *__pyx_n_s__beam_alpha;
+static PyObject *__pyx_n_s__cat;
+static PyObject *__pyx_n_s__close;
+static PyObject *__pyx_n_s__config;
+static PyObject *__pyx_n_s__config_str;
+static PyObject *__pyx_n_s__csplit;
+static PyObject *__pyx_n_s__delta;
+static PyObject *__pyx_n_s__density;
+static PyObject *__pyx_n_s__dot;
+static PyObject *__pyx_n_s__e;
+static PyObject *__pyx_n_s__encode;
+static PyObject *__pyx_n_s__encoding;
+static PyObject *__pyx_n_s__enumerate;
+static PyObject *__pyx_n_s__eval;
+static PyObject *__pyx_n_s__evaluate;
+static PyObject *__pyx_n_s__evaluator;
+static PyObject *__pyx_n_s__f;
+static PyObject *__pyx_n_s__formalism;
+static PyObject *__pyx_n_s__format;
+static PyObject *__pyx_n_s__fst;
+static PyObject *__pyx_n_s__genexpr;
+static PyObject *__pyx_n_s__get;
+static PyObject *__pyx_n_s__grammar;
+static PyObject *__pyx_n_s__hyp;
+static PyObject *__pyx_n_s__hypergraph;
+static PyObject *__pyx_n_s__i;
+static PyObject *__pyx_n_s__in_edges;
+static PyObject *__pyx_n_s__info;
+static PyObject *__pyx_n_s__inp;
+static PyObject *__pyx_n_s__items;
+static PyObject *__pyx_n_s__join;
+static PyObject *__pyx_n_s__k;
+static PyObject *__pyx_n_s__key;
+static PyObject *__pyx_n_s__label;
+static PyObject *__pyx_n_s__lexalign;
+static PyObject *__pyx_n_s__lextrans;
+static PyObject *__pyx_n_s__lhs;
+static PyObject *__pyx_n_s__lines;
+static PyObject *__pyx_n_s__name;
+static PyObject *__pyx_n_s__open;
+static PyObject *__pyx_n_s__pb;
+static PyObject *__pyx_n_s__phrase;
+static PyObject *__pyx_n_s__plf;
+static PyObject *__pyx_n_s__range;
+static PyObject *__pyx_n_s__ref;
+static PyObject *__pyx_n_s__refs;
+static PyObject *__pyx_n_s__replace;
+static PyObject *__pyx_n_s__rhs;
+static PyObject *__pyx_n_s__rules;
+static PyObject *__pyx_n_s__scfg;
+static PyObject *__pyx_n_s__score;
+static PyObject *__pyx_n_s__scores;
+static PyObject *__pyx_n_s__self;
+static PyObject *__pyx_n_s__send;
+static PyObject *__pyx_n_s__sentence;
+static PyObject *__pyx_n_s__set_silent;
+static PyObject *__pyx_n_s__span;
+static PyObject *__pyx_n_s__split;
+static PyObject *__pyx_n_s__startswith;
+static PyObject *__pyx_n_s__strip;
+static PyObject *__pyx_n_s__super;
+static PyObject *__pyx_n_s__tagger;
+static PyObject *__pyx_n_s__text;
+static PyObject *__pyx_n_s__throw;
+static PyObject *__pyx_n_s__utf8;
+static PyObject *__pyx_n_s__value;
+static PyObject *__pyx_n_s__weight;
+static PyObject *__pyx_n_s__yn;
 static PyObject *__pyx_int_0;
 static PyObject *__pyx_int_1;
-static PyObject *__pyx_tuple_;
-static PyObject *__pyx_tuple__2;
-static PyObject *__pyx_tuple__3;
-static PyObject *__pyx_tuple__5;
-static PyObject *__pyx_tuple__6;
-static PyObject *__pyx_tuple__7;
-static PyObject *__pyx_tuple__8;
-static PyObject *__pyx_tuple__9;
-static PyObject *__pyx_tuple__12;
-static PyObject *__pyx_tuple__14;
-static PyObject *__pyx_tuple__17;
-static PyObject *__pyx_tuple__18;
-static PyObject *__pyx_tuple__19;
-static PyObject *__pyx_tuple__21;
-static PyObject *__pyx_tuple__22;
-static PyObject *__pyx_tuple__24;
-static PyObject *__pyx_tuple__26;
-static PyObject *__pyx_tuple__27;
-static PyObject *__pyx_tuple__28;
-static PyObject *__pyx_tuple__29;
-static PyObject *__pyx_tuple__30;
-static PyObject *__pyx_tuple__31;
-static PyObject *__pyx_tuple__33;
-static PyObject *__pyx_codeobj__15;
-static PyObject *__pyx_codeobj__25;
-static PyObject *__pyx_codeobj__32;
-static PyObject *__pyx_codeobj__34;
+static PyObject *__pyx_k_tuple_2;
+static PyObject *__pyx_k_tuple_5;
+static PyObject *__pyx_k_tuple_6;
+static PyObject *__pyx_k_tuple_14;
+static PyObject *__pyx_k_tuple_19;
+static PyObject *__pyx_k_tuple_21;
+static PyObject *__pyx_k_tuple_24;
+static PyObject *__pyx_k_tuple_25;
+static PyObject *__pyx_k_tuple_32;
+static PyObject *__pyx_k_tuple_35;
+static PyObject *__pyx_k_tuple_41;
+static PyObject *__pyx_k_tuple_43;
+static PyObject *__pyx_k_tuple_45;
+static PyObject *__pyx_k_tuple_51;
+static PyObject *__pyx_k_tuple_52;
+static PyObject *__pyx_k_tuple_56;
+static PyObject *__pyx_k_tuple_59;
+static PyObject *__pyx_k_tuple_60;
+static PyObject *__pyx_k_tuple_61;
+static PyObject *__pyx_k_tuple_62;
+static PyObject *__pyx_k_tuple_63;
+static PyObject *__pyx_k_tuple_64;
+static PyObject *__pyx_k_tuple_67;
+static PyObject *__pyx_k_codeobj_36;
+static PyObject *__pyx_k_codeobj_57;
+static PyObject *__pyx_k_codeobj_65;
+static PyObject *__pyx_k_codeobj_68;
 
 /* "cdec/_cdec.pyx":6
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@@ -2621,7 +2588,7 @@ static PyObject *__pyx_codeobj__34;
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 static PyObject *__pyx_f_4cdec_5_cdec_as_str(PyObject *__pyx_v_data, struct __pyx_opt_args_4cdec_5_cdec_as_str *__pyx_optional_args) {
-  char *__pyx_v_error_msg = ((char *)__pyx_k_Cannot_convert_type_s_to_str);
+  char *__pyx_v_error_msg = ((char *)__pyx_k_1);
   PyObject *__pyx_v_ret = 0;
   PyObject *__pyx_r = NULL;
   __Pyx_RefNannyDeclarations
@@ -2658,12 +2625,12 @@ static PyObject *__pyx_f_4cdec_5_cdec_as_str(PyObject *__pyx_v_data, struct __py
  *     elif isinstance(data, str):
  *         ret = data
  */
-    __pyx_t_3 = __Pyx_PyObject_GetAttrStr(__pyx_v_data, __pyx_n_s_encode); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 9; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = __Pyx_PyObject_GetAttrStr(__pyx_v_data, __pyx_n_s__encode); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 9; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_3);
-    __pyx_t_4 = __Pyx_PyObject_Call(__pyx_t_3, __pyx_tuple_, NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 9; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_k_tuple_2), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 9; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-    if (!(likely(PyBytes_CheckExact(__pyx_t_4))||((__pyx_t_4) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected %.16s, got %.200s", "bytes", Py_TYPE(__pyx_t_4)->tp_name), 0))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 9; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (!(likely(PyBytes_CheckExact(__pyx_t_4))||((__pyx_t_4) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected bytes, got %.200s", Py_TYPE(__pyx_t_4)->tp_name), 0))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 9; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __pyx_v_ret = ((PyObject*)__pyx_t_4);
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@@ -2687,11 +2654,9 @@ static PyObject *__pyx_f_4cdec_5_cdec_as_str(PyObject *__pyx_v_data, struct __py
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-    __pyx_t_4 = __pyx_v_data;
-    __Pyx_INCREF(__pyx_t_4);
-    __pyx_v_ret = ((PyObject*)__pyx_t_4);
-    __pyx_t_4 = 0;
+    if (!(likely(PyBytes_CheckExact(__pyx_v_data))||((__pyx_v_data) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected bytes, got %.200s", Py_TYPE(__pyx_v_data)->tp_name), 0))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 11; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -2704,27 +2669,27 @@ static PyObject *__pyx_f_4cdec_5_cdec_as_str(PyObject *__pyx_v_data, struct __py
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     __Pyx_GOTREF(__pyx_t_5);
-    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
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@@ -2738,20 +2703,13 @@ static PyObject *__pyx_f_4cdec_5_cdec_as_str(PyObject *__pyx_v_data, struct __py
  * 
  * include "vectors.pxi"
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-  __Pyx_XDECREF(__pyx_r);
-  __Pyx_INCREF(__pyx_v_ret);
+  __Pyx_XDECREF(((PyObject *)__pyx_r));
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-  /* "cdec/_cdec.pyx":6
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- *     cdef bytes ret
- *     if isinstance(data, unicode):
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-
-  /* function exit code */
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   __pyx_L1_error:;
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@@ -2765,14 +2723,6 @@ static PyObject *__pyx_f_4cdec_5_cdec_as_str(PyObject *__pyx_v_data, struct __py
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 }
 
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 /* Python wrapper */
 static int __pyx_pw_4cdec_5_cdec_11DenseVector_1__init__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
 static char __pyx_doc_4cdec_5_cdec_11DenseVector___init__[] = "DenseVector() -> Dense weight/feature vector.";
@@ -2787,12 +2737,18 @@ static int __pyx_pw_4cdec_5_cdec_11DenseVector_1__init__(PyObject *__pyx_v_self,
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-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":7
+ *     cdef bint owned # if True, do not manage memory
+ * 
+ *     def __init__(self):             # <<<<<<<<<<<<<<
+ *         """DenseVector() -> Dense weight/feature vector."""
+ *         self.vector = new vector[weight_t]()
+ */
+
 static int __pyx_pf_4cdec_5_cdec_11DenseVector___init__(struct __pyx_obj_4cdec_5_cdec_DenseVector *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":9
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":9
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":10
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":10
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":7
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- *     def __init__(self):             # <<<<<<<<<<<<<<
- *         """DenseVector() -> Dense weight/feature vector."""
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-  /* function exit code */
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 /* Python wrapper */
 static void __pyx_pw_4cdec_5_cdec_11DenseVector_3__dealloc__(PyObject *__pyx_v_self); /*proto*/
 static void __pyx_pw_4cdec_5_cdec_11DenseVector_3__dealloc__(PyObject *__pyx_v_self) {
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-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":12
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+ * 
+ *     def __dealloc__(self):             # <<<<<<<<<<<<<<
+ *         if not self.owned:
+ *             del self.vector
+ */
+
 static void __pyx_pf_4cdec_5_cdec_11DenseVector_2__dealloc__(struct __pyx_obj_4cdec_5_cdec_DenseVector *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":13
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":13
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-    /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":14
+    /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":14
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":12
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-  /* function exit code */
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 }
 
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 /* Python wrapper */
 static Py_ssize_t __pyx_pw_4cdec_5_cdec_11DenseVector_5__len__(PyObject *__pyx_v_self); /*proto*/
 static Py_ssize_t __pyx_pw_4cdec_5_cdec_11DenseVector_5__len__(PyObject *__pyx_v_self) {
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-
-  /* function exit code */
   __Pyx_RefNannyFinishContext();
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 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":16
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+ * 
+ *     def __len__(self):             # <<<<<<<<<<<<<<
+ *         return self.vector.size()
+ * 
+ */
+
 static Py_ssize_t __pyx_pf_4cdec_5_cdec_11DenseVector_4__len__(struct __pyx_obj_4cdec_5_cdec_DenseVector *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":17
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":16
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- * 
- *     def __len__(self):             # <<<<<<<<<<<<<<
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-
-  /* function exit code */
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 }
 
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 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_11DenseVector_7__getitem__(PyObject *__pyx_v_self, PyObject *__pyx_arg_fname); /*proto*/
 static PyObject *__pyx_pw_4cdec_5_cdec_11DenseVector_7__getitem__(PyObject *__pyx_v_self, PyObject *__pyx_arg_fname) {
@@ -2981,12 +2899,18 @@ static PyObject *__pyx_pw_4cdec_5_cdec_11DenseVector_7__getitem__(PyObject *__py
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-
-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":19
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+ * 
+ *     def __getitem__(self, char* fname):             # <<<<<<<<<<<<<<
+ *         cdef int fid = FDConvert(fname)
+ *         if 0 <= fid < self.vector.size():
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_11DenseVector_6__getitem__(struct __pyx_obj_4cdec_5_cdec_DenseVector *__pyx_v_self, char *__pyx_v_fname) {
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@@ -3000,7 +2924,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_11DenseVector_6__getitem__(struct __pyx_o
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":20
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  *     def __getitem__(self, char* fname):
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":21
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":21
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  *         if 0 <= fid < self.vector.size():             # <<<<<<<<<<<<<<
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-    /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":22
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":23
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":23
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-  PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_t_3);
-  __Pyx_GIVEREF(__pyx_t_3);
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+  __pyx_t_3 = PyObject_Call(__pyx_builtin_KeyError, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 23; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":19
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- *         cdef int fid = FDConvert(fname)
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-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
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-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":25
- *         raise KeyError(fname)
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- *     def __setitem__(self, char* fname, float value):             # <<<<<<<<<<<<<<
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 /* Python wrapper */
 static int __pyx_pw_4cdec_5_cdec_11DenseVector_9__setitem__(PyObject *__pyx_v_self, PyObject *__pyx_arg_fname, PyObject *__pyx_arg_value); /*proto*/
 static int __pyx_pw_4cdec_5_cdec_11DenseVector_9__setitem__(PyObject *__pyx_v_self, PyObject *__pyx_arg_fname, PyObject *__pyx_arg_value) {
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+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":25
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 static int __pyx_pf_4cdec_5_cdec_11DenseVector_8__setitem__(struct __pyx_obj_4cdec_5_cdec_DenseVector *__pyx_v_self, char *__pyx_v_fname, float __pyx_v_value) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":26
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":27
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+    __pyx_t_2 = PyObject_Call(__pyx_builtin_KeyError, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 27; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":28
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-    /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":29
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":30
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-  /* function exit code */
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 }
 static PyObject *__pyx_gb_4cdec_5_cdec_11DenseVector_12generator(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
 
-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":32
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-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_11DenseVector_11__iter__(PyObject *__pyx_v_self); /*proto*/
 static PyObject *__pyx_pw_4cdec_5_cdec_11DenseVector_11__iter__(PyObject *__pyx_v_self) {
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-
-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":32
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+ * 
+ *     def __iter__(self):             # <<<<<<<<<<<<<<
+ *         cdef unsigned fid
+ *         for fid in range(1, self.vector.size()):
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_11DenseVector_10__iter__(struct __pyx_obj_4cdec_5_cdec_DenseVector *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":34
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":34
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-    /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":35
+    /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":35
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+    __Pyx_GOTREF(((PyObject *)__pyx_t_3));
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+    __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)(&PyString_Type))), ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 35; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
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@@ -3335,7 +3242,7 @@ static PyObject *__pyx_gb_4cdec_5_cdec_11DenseVector_12generator(__pyx_Generator
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     __pyx_t_4 = 0;
-    __pyx_r = __pyx_t_5;
+    __pyx_r = ((PyObject *)__pyx_t_5);
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- *         cdef unsigned fid
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-  /* function exit code */
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-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":37
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 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_11DenseVector_14dot(PyObject *__pyx_v_self, PyObject *__pyx_v_other); /*proto*/
 static char __pyx_doc_4cdec_5_cdec_11DenseVector_13dot[] = "vector.dot(SparseVector other) -> Dot product of the two vectors.";
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   return __pyx_r;
 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":37
+ *             yield str(FDConvert(fid).c_str()), self.vector[0][fid]
+ * 
+ *     def dot(self, SparseVector other):             # <<<<<<<<<<<<<<
+ *         """vector.dot(SparseVector other) -> Dot product of the two vectors."""
+ *         return other.dot(self)
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_11DenseVector_13dot(struct __pyx_obj_4cdec_5_cdec_DenseVector *__pyx_v_self, struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_other) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":39
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":39
  *     def dot(self, SparseVector other):
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+  __pyx_t_1 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_other), __pyx_n_s__dot); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_3 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":37
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- *         """vector.dot(SparseVector other) -> Dot product of the two vectors."""
- *         return other.dot(self)
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
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-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":41
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 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_11DenseVector_16tosparse(PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *unused); /*proto*/
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-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":41
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+ *     def tosparse(self):             # <<<<<<<<<<<<<<
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+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_11DenseVector_15tosparse(struct __pyx_obj_4cdec_5_cdec_DenseVector *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":43
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+  __pyx_t_1 = __pyx_tp_new_4cdec_5_cdec_SparseVector(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SparseVector)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":44
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":44
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":45
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":45
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":46
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":41
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-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
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 }
 
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 /* Python wrapper */
 static int __pyx_pw_4cdec_5_cdec_12SparseVector_1__init__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
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+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":51
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+ * 
+ *     def __init__(self):             # <<<<<<<<<<<<<<
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+ */
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 static int __pyx_pf_4cdec_5_cdec_12SparseVector___init__(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":53
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":51
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 static int __pyx_pf_4cdec_5_cdec_12SparseVector_8__setitem__(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self, char *__pyx_v_fname, float __pyx_v_value) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":69
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":75
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":75
  *         cdef FastSparseVector[weight_t].const_iterator* it = new FastSparseVector[weight_t].const_iterator(self.vector[0], False)
  *         cdef unsigned i
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@@ -4054,7 +3874,7 @@ static PyObject *__pyx_gb_4cdec_5_cdec_12SparseVector_12generator1(__pyx_Generat
  */
   /*try:*/ {
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":76
+    /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":76
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  *         try:
  *             for i in range(self.vector.size()):             # <<<<<<<<<<<<<<
@@ -4065,26 +3885,26 @@ static PyObject *__pyx_gb_4cdec_5_cdec_12SparseVector_12generator1(__pyx_Generat
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-      /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":77
+      /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":77
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-      /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":78
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":80
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-      __pyx_lineno = __pyx_t_6; __pyx_clineno = __pyx_t_7; __pyx_filename = __pyx_t_8;
-      goto __pyx_L1_error;
+      __Pyx_ErrFetch(&__pyx_exc_type, &__pyx_exc_value, &__pyx_exc_tb);
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-
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":72
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- *     def __iter__(self):             # <<<<<<<<<<<<<<
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-  /* function exit code */
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@@ -4188,14 +3987,6 @@ static PyObject *__pyx_gb_4cdec_5_cdec_12SparseVector_12generator1(__pyx_Generat
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 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":82
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- *         if isinstance(other, DenseVector):
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 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_14dot(PyObject *__pyx_v_self, PyObject *__pyx_v_other); /*proto*/
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-
-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":82
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+ * 
+ *     def dot(self, other):             # <<<<<<<<<<<<<<
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+ *         if isinstance(other, DenseVector):
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_13dot(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self, PyObject *__pyx_v_other) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":84
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-    /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":85
+    /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":85
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+    goto __pyx_L3;
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":86
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":86
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-    /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":87
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":88
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":82
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- *         if isinstance(other, DenseVector):
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-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
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@@ -4315,14 +4108,6 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_13dot(struct __pyx_obj_4cd
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 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":90
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 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_16__richcmp__(PyObject *__pyx_v_x, PyObject *__pyx_v_y, int __pyx_v_op); /*proto*/
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@@ -4345,6 +4128,14 @@ static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_16__richcmp__(PyObject *__
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 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":90
+ *         raise TypeError('cannot take the dot product of %s and SparseVector' % type(other))
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 static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_15__richcmp__(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_x, struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_y, int __pyx_v_op) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":93
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":93
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-    /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":91
+    /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":91
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@@ -4373,7 +4164,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_15__richcmp__(struct __pyx
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     case 2:
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":92
+    /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":92
  *     def __richcmp__(SparseVector x, SparseVector y, int op):
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@@ -4388,7 +4179,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_15__richcmp__(struct __pyx
     goto __pyx_L0;
     break;
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":93
+    /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":93
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  *         elif op == 3: # !=             # <<<<<<<<<<<<<<
@@ -4397,7 +4188,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_15__richcmp__(struct __pyx
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     case 3:
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":94
+    /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":94
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  *         elif op == 3: # !=
  *             return not (x == y)             # <<<<<<<<<<<<<<
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     break;
-    default: break;
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":95
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":95
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+  __pyx_t_1 = PyObject_Call(__pyx_builtin_NotImplemented, ((PyObject *)__pyx_k_tuple_5), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 95; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":90
- *         raise TypeError('cannot take the dot product of %s and SparseVector' % type(other))
- * 
- *     def __richcmp__(SparseVector x, SparseVector y, int op):             # <<<<<<<<<<<<<<
- *         if op == 2: # ==
- *             return x.vector[0] == y.vector[0]
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
   __pyx_L1_error:;
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@@ -4449,14 +4232,6 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_15__richcmp__(struct __pyx
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 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":97
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-
 /* Python wrapper */
 static Py_ssize_t __pyx_pw_4cdec_5_cdec_12SparseVector_18__len__(PyObject *__pyx_v_self); /*proto*/
 static Py_ssize_t __pyx_pw_4cdec_5_cdec_12SparseVector_18__len__(PyObject *__pyx_v_self) {
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-
-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":97
+ *         raise NotImplemented('comparison not implemented for SparseVector')
+ * 
+ *     def __len__(self):             # <<<<<<<<<<<<<<
+ *         return self.vector.size()
+ * 
+ */
+
 static Py_ssize_t __pyx_pf_4cdec_5_cdec_12SparseVector_17__len__(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":98
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":98
  * 
  *     def __len__(self):
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":97
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- * 
- *     def __len__(self):             # <<<<<<<<<<<<<<
- *         return self.vector.size()
- * 
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-
-  /* function exit code */
+  __pyx_r = 0;
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-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":100
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- *         return self.vector.nonzero(FDConvert(fname))
- * 
- */
-
 /* Python wrapper */
 static int __pyx_pw_4cdec_5_cdec_12SparseVector_20__contains__(PyObject *__pyx_v_self, PyObject *__pyx_arg_fname); /*proto*/
 static int __pyx_pw_4cdec_5_cdec_12SparseVector_20__contains__(PyObject *__pyx_v_self, PyObject *__pyx_arg_fname) {
@@ -4527,18 +4292,24 @@ static int __pyx_pw_4cdec_5_cdec_12SparseVector_20__contains__(PyObject *__pyx_v
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-
-  /* function exit code */
   __Pyx_RefNannyFinishContext();
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 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":100
+ *         return self.vector.size()
+ * 
+ *     def __contains__(self, char* fname):             # <<<<<<<<<<<<<<
+ *         return self.vector.nonzero(FDConvert(fname))
+ * 
+ */
+
 static int __pyx_pf_4cdec_5_cdec_12SparseVector_19__contains__(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self, char *__pyx_v_fname) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":101
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":101
  * 
  *     def __contains__(self, char* fname):
  *         return self.vector.nonzero(FDConvert(fname))             # <<<<<<<<<<<<<<
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   goto __pyx_L0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":100
- *         return self.vector.size()
- * 
- *     def __contains__(self, char* fname):             # <<<<<<<<<<<<<<
- *         return self.vector.nonzero(FDConvert(fname))
- * 
- */
-
-  /* function exit code */
+  __pyx_r = 0;
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-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":103
- *         return self.vector.nonzero(FDConvert(fname))
- * 
- *     def __neg__(self):             # <<<<<<<<<<<<<<
- *         cdef SparseVector result = SparseVector.__new__(SparseVector)
- *         result.vector = new FastSparseVector[weight_t](self.vector[0])
- */
-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_22__neg__(PyObject *__pyx_v_self); /*proto*/
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_22__neg__(PyObject *__pyx_v_self) {
@@ -4577,12 +4332,18 @@ static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_22__neg__(PyObject *__pyx_
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-
-  /* function exit code */
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 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":103
+ *         return self.vector.nonzero(FDConvert(fname))
+ * 
+ *     def __neg__(self):             # <<<<<<<<<<<<<<
+ *         cdef SparseVector result = SparseVector.__new__(SparseVector)
+ *         result.vector = new FastSparseVector[weight_t](self.vector[0])
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_21__neg__(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self) {
   struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_result = 0;
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@@ -4593,20 +4354,20 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_21__neg__(struct __pyx_obj
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":104
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":104
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  *     def __neg__(self):
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-  __pyx_t_1 = __pyx_tp_new_4cdec_5_cdec_SparseVector(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SparseVector)), __pyx_empty_tuple, NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __pyx_tp_new_4cdec_5_cdec_SparseVector(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SparseVector)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":105
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":105
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@@ -4615,7 +4376,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_21__neg__(struct __pyx_obj
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":106
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":106
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@@ -4624,7 +4385,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_21__neg__(struct __pyx_obj
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   (__pyx_v_result->vector[0]) *= -1.0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":107
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":107
  *         result.vector = new FastSparseVector[weight_t](self.vector[0])
  *         result.vector[0] *= -1.0
  *         return result             # <<<<<<<<<<<<<<
@@ -4636,15 +4397,8 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_21__neg__(struct __pyx_obj
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":103
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- *     def __neg__(self):             # <<<<<<<<<<<<<<
- *         cdef SparseVector result = SparseVector.__new__(SparseVector)
- *         result.vector = new FastSparseVector[weight_t](self.vector[0])
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
   __pyx_L1_error:;
   __Pyx_XDECREF(__pyx_t_1);
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@@ -4656,14 +4410,6 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_21__neg__(struct __pyx_obj
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 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":109
- *         return result
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- *     def __iadd__(SparseVector self, SparseVector other):             # <<<<<<<<<<<<<<
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-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_24__iadd__(PyObject *__pyx_v_self, PyObject *__pyx_v_other); /*proto*/
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_24__iadd__(PyObject *__pyx_v_self, PyObject *__pyx_v_other) {
@@ -4675,8 +4421,6 @@ static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_24__iadd__(PyObject *__pyx
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-
-  /* function exit code */
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@@ -4685,12 +4429,20 @@ static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_24__iadd__(PyObject *__pyx
   return __pyx_r;
 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":109
+ *         return result
+ * 
+ *     def __iadd__(SparseVector self, SparseVector other):             # <<<<<<<<<<<<<<
+ *         self.vector[0] += other.vector[0]
+ *         return self
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_23__iadd__(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self, struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_other) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":110
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":110
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   (__pyx_v_self->vector[0]) += (__pyx_v_other->vector[0]);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":111
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":111
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":109
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-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
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-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":113
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 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_26__isub__(PyObject *__pyx_v_self, PyObject *__pyx_v_other); /*proto*/
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-  /* function exit code */
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   __pyx_r = NULL;
@@ -4755,12 +4489,20 @@ static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_26__isub__(PyObject *__pyx
   return __pyx_r;
 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":113
+ *         return self
+ * 
+ *     def __isub__(SparseVector self, SparseVector other):             # <<<<<<<<<<<<<<
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+ *         return self
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_25__isub__(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self, struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_other) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":114
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@@ -4769,7 +4511,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_25__isub__(struct __pyx_ob
  */
   (__pyx_v_self->vector[0]) -= (__pyx_v_other->vector[0]);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":115
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":115
  *     def __isub__(SparseVector self, SparseVector other):
  *         self.vector[0] -= other.vector[0]
  *         return self             # <<<<<<<<<<<<<<
@@ -4781,29 +4523,13 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_25__isub__(struct __pyx_ob
   __pyx_r = ((PyObject *)__pyx_v_self);
   goto __pyx_L0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":113
- *         return self
- * 
- *     def __isub__(SparseVector self, SparseVector other):             # <<<<<<<<<<<<<<
- *         self.vector[0] -= other.vector[0]
- *         return self
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
   __pyx_L0:;
   __Pyx_XGIVEREF(__pyx_r);
   __Pyx_RefNannyFinishContext();
   return __pyx_r;
 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":117
- *         return self
- * 
- *     def __imul__(SparseVector self, float scalar):             # <<<<<<<<<<<<<<
- *         self.vector[0] *= scalar
- *         return self
- */
-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_28__imul__(PyObject *__pyx_v_self, PyObject *__pyx_arg_scalar); /*proto*/
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_28__imul__(PyObject *__pyx_v_self, PyObject *__pyx_arg_scalar) {
@@ -4824,18 +4550,24 @@ static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_28__imul__(PyObject *__pyx
   return NULL;
   __pyx_L4_argument_unpacking_done:;
   __pyx_r = __pyx_pf_4cdec_5_cdec_12SparseVector_27__imul__(((struct __pyx_obj_4cdec_5_cdec_SparseVector *)__pyx_v_self), ((float)__pyx_v_scalar));
-
-  /* function exit code */
   __Pyx_RefNannyFinishContext();
   return __pyx_r;
 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":117
+ *         return self
+ * 
+ *     def __imul__(SparseVector self, float scalar):             # <<<<<<<<<<<<<<
+ *         self.vector[0] *= scalar
+ *         return self
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_27__imul__(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self, float __pyx_v_scalar) {
   PyObject *__pyx_r = NULL;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__imul__", 0);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":118
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":118
  * 
  *     def __imul__(SparseVector self, float scalar):
  *         self.vector[0] *= scalar             # <<<<<<<<<<<<<<
@@ -4844,7 +4576,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_27__imul__(struct __pyx_ob
  */
   (__pyx_v_self->vector[0]) *= __pyx_v_scalar;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":119
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":119
  *     def __imul__(SparseVector self, float scalar):
  *         self.vector[0] *= scalar
  *         return self             # <<<<<<<<<<<<<<
@@ -4856,29 +4588,13 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_27__imul__(struct __pyx_ob
   __pyx_r = ((PyObject *)__pyx_v_self);
   goto __pyx_L0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":117
- *         return self
- * 
- *     def __imul__(SparseVector self, float scalar):             # <<<<<<<<<<<<<<
- *         self.vector[0] *= scalar
- *         return self
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
   __pyx_L0:;
   __Pyx_XGIVEREF(__pyx_r);
   __Pyx_RefNannyFinishContext();
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 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":121
- *         return self
- * 
- *     def __idiv__(SparseVector self, float scalar):             # <<<<<<<<<<<<<<
- *         self.vector[0] /= scalar
- *         return self
- */
-
 /* Python wrapper */
 #if PY_MAJOR_VERSION < 3
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_30__idiv__(PyObject *__pyx_v_self, PyObject *__pyx_arg_scalar); /*proto*/
@@ -4900,20 +4616,26 @@ static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_30__idiv__(PyObject *__pyx
   return NULL;
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-
-  /* function exit code */
   __Pyx_RefNannyFinishContext();
   return __pyx_r;
 }
 #endif /*!(#if PY_MAJOR_VERSION < 3)*/
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":121
+ *         return self
+ * 
+ *     def __idiv__(SparseVector self, float scalar):             # <<<<<<<<<<<<<<
+ *         self.vector[0] /= scalar
+ *         return self
+ */
+
 #if PY_MAJOR_VERSION < 3
 static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_29__idiv__(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_self, float __pyx_v_scalar) {
   PyObject *__pyx_r = NULL;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__idiv__", 0);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":122
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":122
  * 
  *     def __idiv__(SparseVector self, float scalar):
  *         self.vector[0] /= scalar             # <<<<<<<<<<<<<<
@@ -4922,7 +4644,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_29__idiv__(struct __pyx_ob
  */
   (__pyx_v_self->vector[0]) /= __pyx_v_scalar;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":123
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":123
  *     def __idiv__(SparseVector self, float scalar):
  *         self.vector[0] /= scalar
  *         return self             # <<<<<<<<<<<<<<
@@ -4934,15 +4656,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_29__idiv__(struct __pyx_ob
   __pyx_r = ((PyObject *)__pyx_v_self);
   goto __pyx_L0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":121
- *         return self
- * 
- *     def __idiv__(SparseVector self, float scalar):             # <<<<<<<<<<<<<<
- *         self.vector[0] /= scalar
- *         return self
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
   __pyx_L0:;
   __Pyx_XGIVEREF(__pyx_r);
   __Pyx_RefNannyFinishContext();
@@ -4950,14 +4664,6 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_29__idiv__(struct __pyx_ob
 }
 #endif /*!(#if PY_MAJOR_VERSION < 3)*/
 
-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":125
- *         return self
- * 
- *     def __add__(SparseVector x, SparseVector y):             # <<<<<<<<<<<<<<
- *         cdef SparseVector result = SparseVector.__new__(SparseVector)
- *         result.vector = new FastSparseVector[weight_t](x.vector[0] + y.vector[0])
- */
-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_32__add__(PyObject *__pyx_v_x, PyObject *__pyx_v_y); /*proto*/
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_32__add__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
@@ -4970,8 +4676,6 @@ static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_32__add__(PyObject *__pyx_
   if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_x), __pyx_ptype_4cdec_5_cdec_SparseVector, 1, "x", 0))) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_y), __pyx_ptype_4cdec_5_cdec_SparseVector, 1, "y", 0))) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_r = __pyx_pf_4cdec_5_cdec_12SparseVector_31__add__(((struct __pyx_obj_4cdec_5_cdec_SparseVector *)__pyx_v_x), ((struct __pyx_obj_4cdec_5_cdec_SparseVector *)__pyx_v_y));
-
-  /* function exit code */
   goto __pyx_L0;
   __pyx_L1_error:;
   __pyx_r = NULL;
@@ -4980,6 +4684,14 @@ static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_32__add__(PyObject *__pyx_
   return __pyx_r;
 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":125
+ *         return self
+ * 
+ *     def __add__(SparseVector x, SparseVector y):             # <<<<<<<<<<<<<<
+ *         cdef SparseVector result = SparseVector.__new__(SparseVector)
+ *         result.vector = new FastSparseVector[weight_t](x.vector[0] + y.vector[0])
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_31__add__(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_x, struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_y) {
   struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_result = 0;
   PyObject *__pyx_r = NULL;
@@ -4990,20 +4702,20 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_31__add__(struct __pyx_obj
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__add__", 0);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":126
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":126
  * 
  *     def __add__(SparseVector x, SparseVector y):
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)             # <<<<<<<<<<<<<<
  *         result.vector = new FastSparseVector[weight_t](x.vector[0] + y.vector[0])
  *         return result
  */
-  __pyx_t_1 = __pyx_tp_new_4cdec_5_cdec_SparseVector(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SparseVector)), __pyx_empty_tuple, NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 126; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __pyx_tp_new_4cdec_5_cdec_SparseVector(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SparseVector)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 126; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   if (!(likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_4cdec_5_cdec_SparseVector)))) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 126; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_result = ((struct __pyx_obj_4cdec_5_cdec_SparseVector *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":127
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":127
  *     def __add__(SparseVector x, SparseVector y):
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)
  *         result.vector = new FastSparseVector[weight_t](x.vector[0] + y.vector[0])             # <<<<<<<<<<<<<<
@@ -5012,7 +4724,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_31__add__(struct __pyx_obj
  */
   __pyx_v_result->vector = new FastSparseVector<weight_t>(((__pyx_v_x->vector[0]) + (__pyx_v_y->vector[0])));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":128
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":128
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)
  *         result.vector = new FastSparseVector[weight_t](x.vector[0] + y.vector[0])
  *         return result             # <<<<<<<<<<<<<<
@@ -5024,15 +4736,8 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_31__add__(struct __pyx_obj
   __pyx_r = ((PyObject *)__pyx_v_result);
   goto __pyx_L0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":125
- *         return self
- * 
- *     def __add__(SparseVector x, SparseVector y):             # <<<<<<<<<<<<<<
- *         cdef SparseVector result = SparseVector.__new__(SparseVector)
- *         result.vector = new FastSparseVector[weight_t](x.vector[0] + y.vector[0])
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
   __pyx_L1_error:;
   __Pyx_XDECREF(__pyx_t_1);
   __Pyx_AddTraceback("cdec._cdec.SparseVector.__add__", __pyx_clineno, __pyx_lineno, __pyx_filename);
@@ -5044,14 +4749,6 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_31__add__(struct __pyx_obj
   return __pyx_r;
 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":130
- *         return result
- * 
- *     def __sub__(SparseVector x, SparseVector y):             # <<<<<<<<<<<<<<
- *         cdef SparseVector result = SparseVector.__new__(SparseVector)
- *         result.vector = new FastSparseVector[weight_t](x.vector[0] - y.vector[0])
- */
-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_34__sub__(PyObject *__pyx_v_x, PyObject *__pyx_v_y); /*proto*/
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_34__sub__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
@@ -5064,8 +4761,6 @@ static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_34__sub__(PyObject *__pyx_
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   if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_y), __pyx_ptype_4cdec_5_cdec_SparseVector, 1, "y", 0))) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_r = __pyx_pf_4cdec_5_cdec_12SparseVector_33__sub__(((struct __pyx_obj_4cdec_5_cdec_SparseVector *)__pyx_v_x), ((struct __pyx_obj_4cdec_5_cdec_SparseVector *)__pyx_v_y));
-
-  /* function exit code */
   goto __pyx_L0;
   __pyx_L1_error:;
   __pyx_r = NULL;
@@ -5074,6 +4769,14 @@ static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_34__sub__(PyObject *__pyx_
   return __pyx_r;
 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":130
+ *         return result
+ * 
+ *     def __sub__(SparseVector x, SparseVector y):             # <<<<<<<<<<<<<<
+ *         cdef SparseVector result = SparseVector.__new__(SparseVector)
+ *         result.vector = new FastSparseVector[weight_t](x.vector[0] - y.vector[0])
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_33__sub__(struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_x, struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_y) {
   struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_result = 0;
   PyObject *__pyx_r = NULL;
@@ -5084,20 +4787,20 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_33__sub__(struct __pyx_obj
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__sub__", 0);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":131
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":131
  * 
  *     def __sub__(SparseVector x, SparseVector y):
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)             # <<<<<<<<<<<<<<
  *         result.vector = new FastSparseVector[weight_t](x.vector[0] - y.vector[0])
  *         return result
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-  __pyx_t_1 = __pyx_tp_new_4cdec_5_cdec_SparseVector(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SparseVector)), __pyx_empty_tuple, NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 131; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __pyx_tp_new_4cdec_5_cdec_SparseVector(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SparseVector)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 131; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   if (!(likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_4cdec_5_cdec_SparseVector)))) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 131; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_result = ((struct __pyx_obj_4cdec_5_cdec_SparseVector *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":132
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":132
  *     def __sub__(SparseVector x, SparseVector y):
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)
  *         result.vector = new FastSparseVector[weight_t](x.vector[0] - y.vector[0])             # <<<<<<<<<<<<<<
@@ -5106,7 +4809,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_33__sub__(struct __pyx_obj
  */
   __pyx_v_result->vector = new FastSparseVector<weight_t>(((__pyx_v_x->vector[0]) - (__pyx_v_y->vector[0])));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":133
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":133
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)
  *         result.vector = new FastSparseVector[weight_t](x.vector[0] - y.vector[0])
  *         return result             # <<<<<<<<<<<<<<
@@ -5118,15 +4821,8 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_33__sub__(struct __pyx_obj
   __pyx_r = ((PyObject *)__pyx_v_result);
   goto __pyx_L0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":130
- *         return result
- * 
- *     def __sub__(SparseVector x, SparseVector y):             # <<<<<<<<<<<<<<
- *         cdef SparseVector result = SparseVector.__new__(SparseVector)
- *         result.vector = new FastSparseVector[weight_t](x.vector[0] - y.vector[0])
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
   __pyx_L1_error:;
   __Pyx_XDECREF(__pyx_t_1);
   __Pyx_AddTraceback("cdec._cdec.SparseVector.__sub__", __pyx_clineno, __pyx_lineno, __pyx_filename);
@@ -5138,14 +4834,6 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_33__sub__(struct __pyx_obj
   return __pyx_r;
 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":135
- *         return result
- * 
- *     def __mul__(x, y):             # <<<<<<<<<<<<<<
- *         cdef SparseVector vector
- *         cdef float scalar
- */
-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_36__mul__(PyObject *__pyx_v_x, PyObject *__pyx_v_y); /*proto*/
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_36__mul__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
@@ -5153,12 +4841,18 @@ static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_36__mul__(PyObject *__pyx_
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-
-  /* function exit code */
   __Pyx_RefNannyFinishContext();
   return __pyx_r;
 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":135
+ *         return result
+ * 
+ *     def __mul__(x, y):             # <<<<<<<<<<<<<<
+ *         cdef SparseVector vector
+ *         cdef float scalar
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_35__mul__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
   struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_vector = 0;
   float __pyx_v_scalar;
@@ -5174,7 +4868,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_35__mul__(PyObject *__pyx_
   int __pyx_clineno = 0;
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":138
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":138
  *         cdef SparseVector vector
  *         cdef float scalar
  *         if isinstance(x, SparseVector): vector, scalar = x, y             # <<<<<<<<<<<<<<
@@ -5195,7 +4889,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_35__mul__(PyObject *__pyx_
   }
   /*else*/ {
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":139
+    /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":139
  *         cdef float scalar
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  *         else: vector, scalar = y, x             # <<<<<<<<<<<<<<
@@ -5212,20 +4906,20 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_35__mul__(PyObject *__pyx_
   }
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":140
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":140
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  *         else: vector, scalar = y, x
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)             # <<<<<<<<<<<<<<
  *         result.vector = new FastSparseVector[weight_t](vector.vector[0] * scalar)
  *         return result
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-  __pyx_t_3 = __pyx_tp_new_4cdec_5_cdec_SparseVector(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SparseVector)), __pyx_empty_tuple, NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 140; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = __pyx_tp_new_4cdec_5_cdec_SparseVector(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SparseVector)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 140; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_t_3 = 0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":141
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":141
  *         else: vector, scalar = y, x
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)
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@@ -5234,7 +4928,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_35__mul__(PyObject *__pyx_
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":142
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":142
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   __pyx_r = ((PyObject *)__pyx_v_result);
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":135
- *         return result
- * 
- *     def __mul__(x, y):             # <<<<<<<<<<<<<<
- *         cdef SparseVector vector
- *         cdef float scalar
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
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   __Pyx_XDECREF(__pyx_t_3);
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@@ -5267,14 +4954,6 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_35__mul__(PyObject *__pyx_
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-/* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":144
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- *     def __div__(x, y):             # <<<<<<<<<<<<<<
- *         cdef SparseVector vector
- *         cdef float scalar
- */
-
 /* Python wrapper */
 #if PY_MAJOR_VERSION < 3
 static PyObject *__pyx_pw_4cdec_5_cdec_12SparseVector_38__div__(PyObject *__pyx_v_x, PyObject *__pyx_v_y); /*proto*/
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-
-  /* function exit code */
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 }
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+/* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":144
+ *         return result
+ * 
+ *     def __div__(x, y):             # <<<<<<<<<<<<<<
+ *         cdef SparseVector vector
+ *         cdef float scalar
+ */
+
 #if PY_MAJOR_VERSION < 3
 static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_37__div__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":147
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":147
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  *         cdef float scalar
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-    /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":148
+    /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":148
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":149
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":149
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+  __pyx_t_3 = __pyx_tp_new_4cdec_5_cdec_SparseVector(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SparseVector)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 149; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":150
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":150
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":151
+  /* "/usr0/home/austinma/git/cdec/python/cdec/vectors.pxi":151
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-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":144
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- * 
- *     def __div__(x, y):             # <<<<<<<<<<<<<<
- *         cdef SparseVector vector
- *         cdef float scalar
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
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   __Pyx_XDECREF(__pyx_t_3);
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@@ -5397,14 +5075,6 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12SparseVector_37__div__(PyObject *__pyx_
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-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":5
- * import cdec.sa._sa as _sa
- * 
- * def _phrase(phrase):             # <<<<<<<<<<<<<<
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- * 
- */
-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_1_phrase(PyObject *__pyx_self, PyObject *__pyx_v_phrase); /*proto*/
 static PyMethodDef __pyx_mdef_4cdec_5_cdec_1_phrase = {__Pyx_NAMESTR("_phrase"), (PyCFunction)__pyx_pw_4cdec_5_cdec_1_phrase, METH_O, __Pyx_DOCSTR(0)};
@@ -5413,14 +5083,12 @@ static PyObject *__pyx_pw_4cdec_5_cdec_1_phrase(PyObject *__pyx_self, PyObject *
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-static PyObject *__pyx_gb_4cdec_5_cdec_7_phrase_2generator18(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
+static PyObject *__pyx_gb_4cdec_5_cdec_7_phrase_2generator21(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":6
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":6
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+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_4cdec_5_cdec_7_phrase_2generator21, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 6; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* function exit code */
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-static PyObject *__pyx_gb_4cdec_5_cdec_7_phrase_2generator18(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
+static PyObject *__pyx_gb_4cdec_5_cdec_7_phrase_2generator21(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
 {
   struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *__pyx_cur_scope = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *)__pyx_generator->closure);
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@@ -5517,9 +5184,8 @@ static PyObject *__pyx_gb_4cdec_5_cdec_7_phrase_2generator18(__pyx_GeneratorObje
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-        PyObject* exc_type = PyErr_Occurred();
-        if (exc_type) {
-          if (likely(exc_type == PyExc_StopIteration || PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration))) PyErr_Clear();
+        if (PyErr_Occurred()) {
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-    __Pyx_XDECREF_SET(__pyx_cur_scope->__pyx_v_w, __pyx_t_4);
+    __Pyx_XDECREF(__pyx_cur_scope->__pyx_v_w);
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+    __pyx_cur_scope->__pyx_v_w = __pyx_t_4;
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+      __pyx_t_6 = __Pyx_PyObject_GetAttrStr(__pyx_cur_scope->__pyx_v_w, __pyx_n_s__encode); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 6; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __pyx_t_7 = __Pyx_PyObject_Call(__pyx_t_6, __pyx_tuple__3, NULL); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 6; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = PyObject_Call(__pyx_t_6, ((PyObject *)__pyx_k_tuple_6), NULL); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 6; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_6 = PyObject_Call(((PyObject *)((PyObject*)(&PyString_Type))), ((PyObject *)__pyx_t_7), NULL); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 6; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
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@@ -5571,8 +5238,6 @@ static PyObject *__pyx_gb_4cdec_5_cdec_7_phrase_2generator18(__pyx_GeneratorObje
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-  /* function exit code */
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-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":5
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":5
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  * def _phrase(phrase):             # <<<<<<<<<<<<<<
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   PyObject *__pyx_t_2 = NULL;
+  PyObject *__pyx_t_3 = NULL;
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   const char *__pyx_filename = NULL;
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@@ -5617,7 +5283,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec__phrase(CYTHON_UNUSED PyObject *__pyx_sel
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":6
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":6
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+  __pyx_t_1 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_kp_s_7), __pyx_n_s__join); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 6; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* function exit code */
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-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":36
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-      /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":37
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-      /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":39
+      /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":39
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":40
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-      /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":43
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-      /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":45
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":46
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":47
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@@ -6655,31 +6258,31 @@ static int __pyx_pw_4cdec_5_cdec_5TRule_1__init__(PyObject *__pyx_v_self, PyObje
       kw_args = PyDict_Size(__pyx_kwds);
       switch (pos_args) {
         case  0:
-        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s_lhs)) != 0)) kw_args--;
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__lhs)) != 0)) kw_args--;
         else goto __pyx_L5_argtuple_error;
         case  1:
-        if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s_f)) != 0)) kw_args--;
+        if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__f)) != 0)) kw_args--;
         else {
           __Pyx_RaiseArgtupleInvalid("__init__", 0, 4, 6, 1); {__pyx_filename = __pyx_f[2]; __pyx_lineno = 52; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  2:
-        if (likely((values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s_e)) != 0)) kw_args--;
+        if (likely((values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__e)) != 0)) kw_args--;
         else {
           __Pyx_RaiseArgtupleInvalid("__init__", 0, 4, 6, 2); {__pyx_filename = __pyx_f[2]; __pyx_lineno = 52; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  3:
-        if (likely((values[3] = PyDict_GetItem(__pyx_kwds, __pyx_n_s_scores)) != 0)) kw_args--;
+        if (likely((values[3] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__scores)) != 0)) kw_args--;
         else {
           __Pyx_RaiseArgtupleInvalid("__init__", 0, 4, 6, 3); {__pyx_filename = __pyx_f[2]; __pyx_lineno = 52; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  4:
         if (kw_args > 0) {
-          PyObject* value = PyDict_GetItem(__pyx_kwds, __pyx_n_s_a);
+          PyObject* value = PyDict_GetItem(__pyx_kwds, __pyx_n_s__a);
           if (value) { values[4] = value; kw_args--; }
         }
         case  5:
         if (kw_args > 0) {
-          PyObject* value = PyDict_GetItem(__pyx_kwds, __pyx_n_s_text);
+          PyObject* value = PyDict_GetItem(__pyx_kwds, __pyx_n_s__text);
           if (value) { values[5] = value; kw_args--; }
         }
       }
@@ -6714,8 +6317,6 @@ static int __pyx_pw_4cdec_5_cdec_5TRule_1__init__(PyObject *__pyx_v_self, PyObje
   return -1;
   __pyx_L4_argument_unpacking_done:;
   __pyx_r = __pyx_pf_4cdec_5_cdec_5TRule___init__(((struct __pyx_obj_4cdec_5_cdec_TRule *)__pyx_v_self), __pyx_v_lhs, __pyx_v_f, __pyx_v_e, __pyx_v_scores, __pyx_v_a, __pyx_v_text);
-
-  /* function exit code */
   __Pyx_RefNannyFinishContext();
   return __pyx_r;
 }
@@ -6731,7 +6332,7 @@ static int __pyx_pf_4cdec_5_cdec_5TRule___init__(struct __pyx_obj_4cdec_5_cdec_T
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__init__", 0);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":59
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":59
  *         scores: dictionary of feature scores
  *         a: optional list of alignment points"""
  *         self.rule = new shared_ptr[grammar.TRule](new grammar.TRule())             # <<<<<<<<<<<<<<
@@ -6746,7 +6347,7 @@ static int __pyx_pf_4cdec_5_cdec_5TRule___init__(struct __pyx_obj_4cdec_5_cdec_T
   }
   __pyx_v_self->rule = new boost::shared_ptr<TRule>(__pyx_t_1);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":60
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":60
  *         a: optional list of alignment points"""
  *         self.rule = new shared_ptr[grammar.TRule](new grammar.TRule())
  *         if lhs:             # <<<<<<<<<<<<<<
@@ -6756,19 +6357,19 @@ static int __pyx_pf_4cdec_5_cdec_5TRule___init__(struct __pyx_obj_4cdec_5_cdec_T
   __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_v_lhs); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 60; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__pyx_t_2) {
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":61
+    /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":61
  *         self.rule = new shared_ptr[grammar.TRule](new grammar.TRule())
  *         if lhs:
  *           self.lhs = lhs             # <<<<<<<<<<<<<<
  *         if e:
  *           self.e = e
  */
-    if (__Pyx_PyObject_SetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_lhs, __pyx_v_lhs) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (__Pyx_PyObject_SetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s__lhs, __pyx_v_lhs) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     goto __pyx_L3;
   }
   __pyx_L3:;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":62
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":62
  *         if lhs:
  *           self.lhs = lhs
  *         if e:             # <<<<<<<<<<<<<<
@@ -6778,19 +6379,19 @@ static int __pyx_pf_4cdec_5_cdec_5TRule___init__(struct __pyx_obj_4cdec_5_cdec_T
   __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_v_e); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__pyx_t_2) {
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":63
+    /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":63
  *           self.lhs = lhs
  *         if e:
  *           self.e = e             # <<<<<<<<<<<<<<
  *         if f:
  *           self.f = f
  */
-    if (__Pyx_PyObject_SetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_e, __pyx_v_e) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (__Pyx_PyObject_SetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s__e, __pyx_v_e) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     goto __pyx_L4;
   }
   __pyx_L4:;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":64
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":64
  *         if e:
  *           self.e = e
  *         if f:             # <<<<<<<<<<<<<<
@@ -6800,19 +6401,19 @@ static int __pyx_pf_4cdec_5_cdec_5TRule___init__(struct __pyx_obj_4cdec_5_cdec_T
   __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_v_f); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 64; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__pyx_t_2) {
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":65
+    /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":65
  *           self.e = e
  *         if f:
  *           self.f = f             # <<<<<<<<<<<<<<
  *         if scores:
  *           self.scores = scores
  */
-    if (__Pyx_PyObject_SetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_f, __pyx_v_f) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 65; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (__Pyx_PyObject_SetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s__f, __pyx_v_f) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 65; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     goto __pyx_L5;
   }
   __pyx_L5:;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":66
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":66
  *         if f:
  *           self.f = f
  *         if scores:             # <<<<<<<<<<<<<<
@@ -6822,19 +6423,19 @@ static int __pyx_pf_4cdec_5_cdec_5TRule___init__(struct __pyx_obj_4cdec_5_cdec_T
   __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_v_scores); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 66; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__pyx_t_2) {
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":67
+    /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":67
  *           self.f = f
  *         if scores:
  *           self.scores = scores             # <<<<<<<<<<<<<<
  *         if a:
  *           self.a = a
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-    if (__Pyx_PyObject_SetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_scores, __pyx_v_scores) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 67; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (__Pyx_PyObject_SetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s__scores, __pyx_v_scores) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 67; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     goto __pyx_L6;
   }
   __pyx_L6:;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":68
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":68
  *         if scores:
  *           self.scores = scores
  *         if a:             # <<<<<<<<<<<<<<
@@ -6844,19 +6445,19 @@ static int __pyx_pf_4cdec_5_cdec_5TRule___init__(struct __pyx_obj_4cdec_5_cdec_T
   __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_v_a); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 68; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__pyx_t_2) {
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":69
+    /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":69
  *           self.scores = scores
  *         if a:
  *           self.a = a             # <<<<<<<<<<<<<<
  *         if text:
  *           self.rule.get().ReadFromString(text, 0)
  */
-    if (__Pyx_PyObject_SetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_a, __pyx_v_a) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 69; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (__Pyx_PyObject_SetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s__a, __pyx_v_a) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 69; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     goto __pyx_L7;
   }
   __pyx_L7:;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":70
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":70
  *         if a:
  *           self.a = a
  *         if text:             # <<<<<<<<<<<<<<
@@ -6866,7 +6467,7 @@ static int __pyx_pf_4cdec_5_cdec_5TRule___init__(struct __pyx_obj_4cdec_5_cdec_T
   __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_v_text); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 70; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__pyx_t_2) {
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":71
+    /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":71
  *           self.a = a
  *         if text:
  *           self.rule.get().ReadFromString(text, 0)             # <<<<<<<<<<<<<<
@@ -6879,7 +6480,7 @@ static int __pyx_pf_4cdec_5_cdec_5TRule___init__(struct __pyx_obj_4cdec_5_cdec_T
   }
   __pyx_L8:;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":72
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":72
  *         if text:
  *           self.rule.get().ReadFromString(text, 0)
  *         self.rule.get().ComputeArity()             # <<<<<<<<<<<<<<
@@ -6888,15 +6489,6 @@ static int __pyx_pf_4cdec_5_cdec_5TRule___init__(struct __pyx_obj_4cdec_5_cdec_T
  */
   __pyx_v_self->rule->get()->ComputeArity();
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":52
- *     cdef shared_ptr[grammar.TRule]* rule
- * 
- *     def __init__(self, lhs, f, e, scores, a=None, text=None):             # <<<<<<<<<<<<<<
- *         """TRule(lhs, f, e, scores, a=None) -> Translation rule.
- *         lhs: left hand side non-terminal
- */
-
-  /* function exit code */
   __pyx_r = 0;
   goto __pyx_L0;
   __pyx_L1_error:;
@@ -6907,30 +6499,28 @@ static int __pyx_pf_4cdec_5_cdec_5TRule___init__(struct __pyx_obj_4cdec_5_cdec_T
   return __pyx_r;
 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":74
- *         self.rule.get().ComputeArity()
- * 
- *     def __dealloc__(self):             # <<<<<<<<<<<<<<
- *         del self.rule
- * 
- */
-
 /* Python wrapper */
 static void __pyx_pw_4cdec_5_cdec_5TRule_3__dealloc__(PyObject *__pyx_v_self); /*proto*/
 static void __pyx_pw_4cdec_5_cdec_5TRule_3__dealloc__(PyObject *__pyx_v_self) {
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   __pyx_pf_4cdec_5_cdec_5TRule_2__dealloc__(((struct __pyx_obj_4cdec_5_cdec_TRule *)__pyx_v_self));
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-  /* function exit code */
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 }
 
-static void __pyx_pf_4cdec_5_cdec_5TRule_2__dealloc__(struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self) {
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":74
+ *         self.rule.get().ComputeArity()
+ * 
+ *     def __dealloc__(self):             # <<<<<<<<<<<<<<
+ *         del self.rule
+ * 
+ */
+
+static void __pyx_pf_4cdec_5_cdec_5TRule_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self) {
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__dealloc__", 0);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":75
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":75
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  *     def __dealloc__(self):
  *         del self.rule             # <<<<<<<<<<<<<<
@@ -6939,26 +6529,9 @@ static void __pyx_pf_4cdec_5_cdec_5TRule_2__dealloc__(struct __pyx_obj_4cdec_5_c
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   delete __pyx_v_self->rule;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":74
- *         self.rule.get().ComputeArity()
- * 
- *     def __dealloc__(self):             # <<<<<<<<<<<<<<
- *         del self.rule
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- */
-
-  /* function exit code */
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 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":78
- * 
- *     property arity:
- *         def __get__(self):             # <<<<<<<<<<<<<<
- *             return self.rule.get().arity_
- * 
- */
-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_5TRule_5arity_1__get__(PyObject *__pyx_v_self); /*proto*/
 static PyObject *__pyx_pw_4cdec_5_cdec_5TRule_5arity_1__get__(PyObject *__pyx_v_self) {
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-
-  /* function exit code */
   __Pyx_RefNannyFinishContext();
   return __pyx_r;
 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":78
+ * 
+ *     property arity:
+ *         def __get__(self):             # <<<<<<<<<<<<<<
+ *             return self.rule.get().arity_
+ * 
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_5TRule_5arity___get__(struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self) {
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@@ -6981,7 +6560,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_5TRule_5arity___get__(struct __pyx_obj_4c
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":79
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":79
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  *         def __get__(self):
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@@ -6989,21 +6568,14 @@ static PyObject *__pyx_pf_4cdec_5_cdec_5TRule_5arity___get__(struct __pyx_obj_4c
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-  __pyx_t_1 = __Pyx_PyInt_From_int(__pyx_v_self->rule->get()->arity_); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 79; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyInt_FromLong(__pyx_v_self->rule->get()->arity_); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 79; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":78
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- *     property arity:
- *         def __get__(self):             # <<<<<<<<<<<<<<
- *             return self.rule.get().arity_
- * 
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
   __pyx_L1_error:;
   __Pyx_XDECREF(__pyx_t_1);
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@@ -7014,14 +6586,6 @@ static PyObject *__pyx_pf_4cdec_5_cdec_5TRule_5arity___get__(struct __pyx_obj_4c
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 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":82
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- *     property f:
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 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_5TRule_1f_1__get__(PyObject *__pyx_v_self); /*proto*/
 static PyObject *__pyx_pw_4cdec_5_cdec_5TRule_1f_1__get__(PyObject *__pyx_v_self) {
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-
-  /* function exit code */
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 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":82
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+ *     property f:
+ *         def __get__(self):             # <<<<<<<<<<<<<<
+ *             cdef vector[WordID]* f_ = &self.rule.get().f_
+ *             cdef WordID w
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_5TRule_1f___get__(struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self) {
   std::vector<WordID> *__pyx_v_f_;
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@@ -7049,13 +6619,12 @@ static PyObject *__pyx_pf_4cdec_5_cdec_5TRule_1f___get__(struct __pyx_obj_4cdec_
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":88
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-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":90
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":95
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":95
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":82
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-  /* function exit code */
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-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":97
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+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":97
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 static int __pyx_pf_4cdec_5_cdec_5TRule_1f_2__set__(struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self, PyObject *__pyx_v_f) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":98
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":99
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":101
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":102
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-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":103
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-      /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":106
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":123
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":126
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":127
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-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":130
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-      /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":131
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-      /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":133
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-      /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":134
+      /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":134
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+      __pyx_t_8 = __Pyx_PyObject_AsString(((PyObject *)__pyx_v_ei)); if (unlikely((!__pyx_t_8) && PyErr_Occurred())) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":125
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-  /* function exit code */
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-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":137
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 /* Python wrapper */
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-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":137
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 static PyObject *__pyx_pf_4cdec_5_cdec_5TRule_1a___get__(struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self) {
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-  /* function exit code */
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":139
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":139
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":140
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":140
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-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":141
+    /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":141
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":137
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-  /* function exit code */
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-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":143
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- * 
- *         def __set__(self, a):             # <<<<<<<<<<<<<<
- *             cdef vector[grammar.AlignmentPoint]* a_ = &self.rule.get().a_
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 /* Python wrapper */
 static int __pyx_pw_4cdec_5_cdec_5TRule_1a_4__set__(PyObject *__pyx_v_self, PyObject *__pyx_v_a); /*proto*/
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-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":143
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+ * 
+ *         def __set__(self, a):             # <<<<<<<<<<<<<<
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+ *             a_.resize(len(a))
+ */
+
 static int __pyx_pf_4cdec_5_cdec_5TRule_1a_3__set__(struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self, PyObject *__pyx_v_a) {
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@@ -7925,7 +7450,7 @@ static int __pyx_pf_4cdec_5_cdec_5TRule_1a_3__set__(struct __pyx_obj_4cdec_5_cde
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":144
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":144
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":145
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":145
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":148
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":148
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-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":149
+    /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":149
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+    __pyx_t_9 = __Pyx_PyInt_AsInt(__pyx_t_5); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 149; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":150
+    /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":150
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":143
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-  /* function exit code */
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 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":153
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 static PyObject *__pyx_pw_4cdec_5_cdec_5TRule_6scores_1__get__(PyObject *__pyx_v_self); /*proto*/
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+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":153
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+
 static PyObject *__pyx_pf_4cdec_5_cdec_5TRule_6scores___get__(struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":154
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+  __pyx_t_1 = __pyx_tp_new_4cdec_5_cdec_SparseVector(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SparseVector)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 154; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":155
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":155
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":156
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":156
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":153
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- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
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-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":158
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 /* Python wrapper */
 static int __pyx_pw_4cdec_5_cdec_5TRule_6scores_3__set__(PyObject *__pyx_v_self, PyObject *__pyx_v_scores); /*proto*/
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+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":158
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+
 static int __pyx_pf_4cdec_5_cdec_5TRule_6scores_2__set__(struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self, PyObject *__pyx_v_scores) {
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@@ -8184,7 +7690,7 @@ static int __pyx_pf_4cdec_5_cdec_5TRule_6scores_2__set__(struct __pyx_obj_4cdec_
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":159
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":160
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":160
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":163
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+  __pyx_t_1 = __Pyx_PyObject_GetAttrStr(__pyx_v_scores, __pyx_n_s__items); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 163; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":164
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+    __pyx_t_2 = ((PyObject *)__pyx_f_4cdec_5_cdec_as_str(__pyx_v_fname, NULL)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 164; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":165
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+    __pyx_t_10 = __Pyx_PyObject_AsString(((PyObject *)__pyx_v_fn)); if (unlikely((!__pyx_t_10) && PyErr_Occurred())) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 165; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":166
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+    __pyx_L7:;
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":167
+    /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":167
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+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":170
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 static PyObject *__pyx_pf_4cdec_5_cdec_5TRule_3lhs___get__(struct __pyx_obj_4cdec_5_cdec_TRule *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":171
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":181
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+  PyTuple_SET_ITEM(__pyx_t_4, 2, ((PyObject *)__pyx_v_e));
+  __Pyx_GIVEREF(((PyObject *)__pyx_v_e));
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+  __pyx_t_7 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 197; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":184
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-  /* function exit code */
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-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":202
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 /* Python wrapper */
 static void __pyx_pw_4cdec_5_cdec_7Grammar_1__dealloc__(PyObject *__pyx_v_self); /*proto*/
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-static void __pyx_pf_4cdec_5_cdec_7Grammar___dealloc__(struct __pyx_obj_4cdec_5_cdec_Grammar *__pyx_v_self) {
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":202
+ *     cdef shared_ptr[grammar.Grammar]* grammar
+ * 
+ *     def __dealloc__(self):             # <<<<<<<<<<<<<<
+ *         del self.grammar
+ * 
+ */
+
+static void __pyx_pf_4cdec_5_cdec_7Grammar___dealloc__(CYTHON_UNUSED struct __pyx_obj_4cdec_5_cdec_Grammar *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":203
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 static PyObject *__pyx_pw_4cdec_5_cdec_7Grammar_3__iter__(PyObject *__pyx_v_self); /*proto*/
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+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":205
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+ * 
+ *     def __iter__(self):             # <<<<<<<<<<<<<<
+ *         cdef grammar.const_GrammarIter* root = self.grammar.get().GetRoot()
+ *         cdef grammar.const_RuleBin* rbin = root.GetRules()
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_7Grammar_2__iter__(struct __pyx_obj_4cdec_5_cdec_Grammar *__pyx_v_self) {
   struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *__pyx_cur_scope;
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-  /* function exit code */
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":206
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":206
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":207
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":207
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":210
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":210
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  *         cdef unsigned i
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-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":211
+    /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":211
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+    __pyx_t_3 = __pyx_tp_new_4cdec_5_cdec_TRule(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_TRule)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 211; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    __Pyx_XDECREF_SET(__pyx_cur_scope->__pyx_v_trule, ((struct __pyx_obj_4cdec_5_cdec_TRule *)__pyx_t_3));
+    __Pyx_XDECREF(((PyObject *)__pyx_cur_scope->__pyx_v_trule));
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+    __pyx_cur_scope->__pyx_v_trule = ((struct __pyx_obj_4cdec_5_cdec_TRule *)__pyx_t_3);
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-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":212
+    /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":212
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-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":213
+    /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":213
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":205
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- * 
- *     def __iter__(self):             # <<<<<<<<<<<<<<
- *         cdef grammar.const_GrammarIter* root = self.grammar.get().GetRoot()
- *         cdef grammar.const_RuleBin* rbin = root.GetRules()
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-  /* function exit code */
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-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":216
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+ *     property name:
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+ *             str(self.grammar.get().GetGrammarName().c_str())
+ * 
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_7Grammar_4name___get__(struct __pyx_obj_4cdec_5_cdec_Grammar *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":217
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+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":219
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+ * 
+ *         def __set__(self, name):             # <<<<<<<<<<<<<<
+ *             name = as_str(name)
+ *             self.grammar.get().SetGrammarName(name)
+ */
+
 static int __pyx_pf_4cdec_5_cdec_7Grammar_4name_2__set__(struct __pyx_obj_4cdec_5_cdec_Grammar *__pyx_v_self, PyObject *__pyx_v_name) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":220
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+  __pyx_t_1 = ((PyObject *)__pyx_f_4cdec_5_cdec_as_str(__pyx_v_name, NULL)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 220; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":221
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":219
- *             str(self.grammar.get().GetGrammarName().c_str())
- * 
- *         def __set__(self, name):             # <<<<<<<<<<<<<<
- *             name = as_str(name)
- *             self.grammar.get().SetGrammarName(name)
- */
-
-  /* function exit code */
   __pyx_r = 0;
   goto __pyx_L0;
   __pyx_L1_error:;
@@ -9534,14 +8941,6 @@ static int __pyx_pf_4cdec_5_cdec_7Grammar_4name_2__set__(struct __pyx_obj_4cdec_
   return __pyx_r;
 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":224
- * 
- * cdef class TextGrammar(Grammar):
- *     def __init__(self, rules):             # <<<<<<<<<<<<<<
- *         """TextGrammar(rules) -> SCFG Grammar containing the rules."""
- *         self.grammar = new shared_ptr[grammar.Grammar](new grammar.TextGrammar())
- */
-
 /* Python wrapper */
 static int __pyx_pw_4cdec_5_cdec_11TextGrammar_1__init__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
 static char __pyx_doc_4cdec_5_cdec_11TextGrammar___init__[] = "TextGrammar(rules) -> SCFG Grammar containing the rules.";
@@ -9557,7 +8956,7 @@ static int __pyx_pw_4cdec_5_cdec_11TextGrammar_1__init__(PyObject *__pyx_v_self,
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__init__ (wrapper)", 0);
   {
-    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s_rules,0};
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__rules,0};
     PyObject* values[1] = {0};
     if (unlikely(__pyx_kwds)) {
       Py_ssize_t kw_args;
@@ -9570,7 +8969,7 @@ static int __pyx_pw_4cdec_5_cdec_11TextGrammar_1__init__(PyObject *__pyx_v_self,
       kw_args = PyDict_Size(__pyx_kwds);
       switch (pos_args) {
         case  0:
-        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s_rules)) != 0)) kw_args--;
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__rules)) != 0)) kw_args--;
         else goto __pyx_L5_argtuple_error;
       }
       if (unlikely(kw_args > 0)) {
@@ -9592,12 +8991,18 @@ static int __pyx_pw_4cdec_5_cdec_11TextGrammar_1__init__(PyObject *__pyx_v_self,
   return -1;
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-
-  /* function exit code */
   __Pyx_RefNannyFinishContext();
   return __pyx_r;
 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":224
+ * 
+ * cdef class TextGrammar(Grammar):
+ *     def __init__(self, rules):             # <<<<<<<<<<<<<<
+ *         """TextGrammar(rules) -> SCFG Grammar containing the rules."""
+ *         self.grammar = new shared_ptr[grammar.Grammar](new grammar.TextGrammar())
+ */
+
 static int __pyx_pf_4cdec_5_cdec_11TextGrammar___init__(struct __pyx_obj_4cdec_5_cdec_TextGrammar *__pyx_v_self, PyObject *__pyx_v_rules) {
   TextGrammar *__pyx_v__g;
   PyObject *__pyx_v_trule = NULL;
@@ -9614,7 +9019,7 @@ static int __pyx_pf_4cdec_5_cdec_11TextGrammar___init__(struct __pyx_obj_4cdec_5
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__init__", 0);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":226
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":226
  *     def __init__(self, rules):
  *         """TextGrammar(rules) -> SCFG Grammar containing the rules."""
  *         self.grammar = new shared_ptr[grammar.Grammar](new grammar.TextGrammar())             # <<<<<<<<<<<<<<
@@ -9623,7 +9028,7 @@ static int __pyx_pf_4cdec_5_cdec_11TextGrammar___init__(struct __pyx_obj_4cdec_5
  */
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":227
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":227
  *         """TextGrammar(rules) -> SCFG Grammar containing the rules."""
  *         self.grammar = new shared_ptr[grammar.Grammar](new grammar.TextGrammar())
  *         cdef grammar.TextGrammar* _g = <grammar.TextGrammar*> self.grammar.get()             # <<<<<<<<<<<<<<
@@ -9632,7 +9037,7 @@ static int __pyx_pf_4cdec_5_cdec_11TextGrammar___init__(struct __pyx_obj_4cdec_5
  */
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":228
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":228
  *         self.grammar = new shared_ptr[grammar.Grammar](new grammar.TextGrammar())
  *         cdef grammar.TextGrammar* _g = <grammar.TextGrammar*> self.grammar.get()
  *         for trule in rules:             # <<<<<<<<<<<<<<
@@ -9665,19 +9070,19 @@ static int __pyx_pf_4cdec_5_cdec_11TextGrammar___init__(struct __pyx_obj_4cdec_5
     } else {
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-        PyObject* exc_type = PyErr_Occurred();
-        if (exc_type) {
-          if (likely(exc_type == PyExc_StopIteration || PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration))) PyErr_Clear();
+        if (PyErr_Occurred()) {
+          if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
           else {__pyx_filename = __pyx_f[2]; __pyx_lineno = 228; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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         break;
       }
       __Pyx_GOTREF(__pyx_t_4);
     }
-    __Pyx_XDECREF_SET(__pyx_v_trule, __pyx_t_4);
+    __Pyx_XDECREF(__pyx_v_trule);
+    __pyx_v_trule = __pyx_t_4;
     __pyx_t_4 = 0;
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":229
+    /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":229
  *         cdef grammar.TextGrammar* _g = <grammar.TextGrammar*> self.grammar.get()
  *         for trule in rules:
  *             if isinstance(trule, _sa.Rule):             # <<<<<<<<<<<<<<
@@ -9688,7 +9093,7 @@ static int __pyx_pf_4cdec_5_cdec_11TextGrammar___init__(struct __pyx_obj_4cdec_5
     __pyx_t_6 = (__pyx_t_5 != 0);
     if (__pyx_t_6) {
 
-      /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":230
+      /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":230
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  *             if isinstance(trule, _sa.Rule):
  *                 trule = convert_rule(trule)             # <<<<<<<<<<<<<<
@@ -9698,12 +9103,13 @@ static int __pyx_pf_4cdec_5_cdec_11TextGrammar___init__(struct __pyx_obj_4cdec_5
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       __pyx_t_4 = ((PyObject *)__pyx_f_4cdec_5_cdec_convert_rule(((struct __pyx_obj_4cdec_2sa_3_sa_Rule *)__pyx_v_trule))); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 230; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
-      __Pyx_DECREF_SET(__pyx_v_trule, __pyx_t_4);
+      __Pyx_DECREF(__pyx_v_trule);
+      __pyx_v_trule = __pyx_t_4;
       __pyx_t_4 = 0;
       goto __pyx_L5;
     }
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":231
+    /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":231
  *             if isinstance(trule, _sa.Rule):
  *                 trule = convert_rule(trule)
  *             elif not isinstance(trule, TRule):             # <<<<<<<<<<<<<<
@@ -9714,21 +9120,22 @@ static int __pyx_pf_4cdec_5_cdec_11TextGrammar___init__(struct __pyx_obj_4cdec_5
     __pyx_t_5 = ((!(__pyx_t_6 != 0)) != 0);
     if (__pyx_t_5) {
 
-      /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":232
+      /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":232
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  *             elif not isinstance(trule, TRule):
  *                 raise ValueError('the grammar should contain TRule objects')             # <<<<<<<<<<<<<<
  *             _g.AddRule((<TRule> trule).rule[0])
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-      __pyx_t_4 = __Pyx_PyObject_Call(__pyx_builtin_ValueError, __pyx_tuple__5, NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 232; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyObject_Call(__pyx_builtin_ValueError, ((PyObject *)__pyx_k_tuple_14), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 232; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       {__pyx_filename = __pyx_f[2]; __pyx_lineno = 232; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      goto __pyx_L5;
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     __pyx_L5:;
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":233
+    /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":233
  *             elif not isinstance(trule, TRule):
  *                 raise ValueError('the grammar should contain TRule objects')
  *             _g.AddRule((<TRule> trule).rule[0])             # <<<<<<<<<<<<<<
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   }
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":224
- * 
- * cdef class TextGrammar(Grammar):
- *     def __init__(self, rules):             # <<<<<<<<<<<<<<
- *         """TextGrammar(rules) -> SCFG Grammar containing the rules."""
- *         self.grammar = new shared_ptr[grammar.Grammar](new grammar.TextGrammar())
- */
-
-  /* function exit code */
   __pyx_r = 0;
   goto __pyx_L0;
   __pyx_L1_error:;
@@ -9759,31 +9157,29 @@ static int __pyx_pf_4cdec_5_cdec_11TextGrammar___init__(struct __pyx_obj_4cdec_5
   return __pyx_r;
 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":8
- *     cdef MT19937* rng
- * 
- *     def __dealloc__(self):             # <<<<<<<<<<<<<<
- *         del self.hg
- *         if self.rng != NULL:
- */
-
 /* Python wrapper */
 static void __pyx_pw_4cdec_5_cdec_10Hypergraph_1__dealloc__(PyObject *__pyx_v_self); /*proto*/
 static void __pyx_pw_4cdec_5_cdec_10Hypergraph_1__dealloc__(PyObject *__pyx_v_self) {
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-
-  /* function exit code */
   __Pyx_RefNannyFinishContext();
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+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":8
+ *     cdef MT19937* rng
+ * 
+ *     def __dealloc__(self):             # <<<<<<<<<<<<<<
+ *         del self.hg
+ *         if self.rng != NULL:
+ */
+
 static void __pyx_pf_4cdec_5_cdec_10Hypergraph___dealloc__(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self) {
   __Pyx_RefNannyDeclarations
   int __pyx_t_1;
   __Pyx_RefNannySetupContext("__dealloc__", 0);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":9
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":9
  * 
  *     def __dealloc__(self):
  *         del self.hg             # <<<<<<<<<<<<<<
@@ -9792,7 +9188,7 @@ static void __pyx_pf_4cdec_5_cdec_10Hypergraph___dealloc__(struct __pyx_obj_4cde
  */
   delete __pyx_v_self->hg;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":10
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":10
  *     def __dealloc__(self):
  *         del self.hg
  *         if self.rng != NULL:             # <<<<<<<<<<<<<<
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   if (__pyx_t_1) {
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":11
+    /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":11
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  *         if self.rng != NULL:
  *             del self.rng             # <<<<<<<<<<<<<<
@@ -9814,19 +9210,10 @@ static void __pyx_pf_4cdec_5_cdec_10Hypergraph___dealloc__(struct __pyx_obj_4cde
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":8
- *     cdef MT19937* rng
- * 
- *     def __dealloc__(self):             # <<<<<<<<<<<<<<
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-
-  /* function exit code */
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-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":13
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":13
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  * 
  *     cdef MT19937* _rng(self):             # <<<<<<<<<<<<<<
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":14
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":14
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  *     cdef MT19937* _rng(self):
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":15
+    /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":15
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@@ -9872,7 +9259,7 @@ static MT19937 *__pyx_f_4cdec_5_cdec_10Hypergraph__rng(struct __pyx_obj_4cdec_5_
   }
   __pyx_L3:;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":16
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":16
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  *             self.rng = new MT19937()
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":13
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- * 
- *     cdef MT19937* _rng(self):             # <<<<<<<<<<<<<<
- *         if self.rng == NULL:
- *             self.rng = new MT19937()
- */
-
-  /* function exit code */
+  __pyx_r = 0;
+  goto __pyx_L0;
   __pyx_L1_error:;
-  __Pyx_WriteUnraisable("cdec._cdec.Hypergraph._rng", __pyx_clineno, __pyx_lineno, __pyx_filename, 0);
+  __Pyx_WriteUnraisable("cdec._cdec.Hypergraph._rng", __pyx_clineno, __pyx_lineno, __pyx_filename);
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-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":18
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- * 
- *     def viterbi(self):             # <<<<<<<<<<<<<<
- *         """hg.viterbi() -> String for the best hypothesis in the hypergraph."""
- *         cdef vector[WordID] trans
- */
-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_3viterbi(PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *unused); /*proto*/
 static char __pyx_doc_4cdec_5_cdec_10Hypergraph_2viterbi[] = "hg.viterbi() -> String for the best hypothesis in the hypergraph.";
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-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":18
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+ * 
+ *     def viterbi(self):             # <<<<<<<<<<<<<<
+ *         """hg.viterbi() -> String for the best hypothesis in the hypergraph."""
+ *         cdef vector[WordID] trans
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_2viterbi(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self) {
   std::vector<WordID> __pyx_v_trans;
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@@ -9932,7 +9310,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_2viterbi(struct __pyx_obj_4c
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":21
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":21
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   ViterbiESentence((__pyx_v_self->hg[0]), (&__pyx_v_trans));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":22
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":22
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-  __Pyx_GOTREF(__pyx_t_1);
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- *         cdef vector[WordID] trans
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-  /* function exit code */
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":31
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- *         hg.hg = new hypergraph.Hypergraph(self.hg[0].CreateViterbiHypergraph(NULL).get()[0])
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
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 }
 
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- *         return hg
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- *     def viterbi_joshua(self):             # <<<<<<<<<<<<<<
- *         """hg.viterbi_joshua() -> Joshua representation of the best derivation."""
- *         return unicode(hypergraph.JoshuaVisualizationString(self.hg[0]).c_str(), 'utf8')
- */
-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_11viterbi_joshua(PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *unused); /*proto*/
 static char __pyx_doc_4cdec_5_cdec_10Hypergraph_10viterbi_joshua[] = "hg.viterbi_joshua() -> Joshua representation of the best derivation.";
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-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":45
+ *         return hg
+ * 
+ *     def viterbi_joshua(self):             # <<<<<<<<<<<<<<
+ *         """hg.viterbi_joshua() -> Joshua representation of the best derivation."""
+ *         return unicode(hypergraph.JoshuaVisualizationString(self.hg[0]).c_str(), 'utf8')
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_10viterbi_joshua(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":47
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":47
  *     def viterbi_joshua(self):
  *         """hg.viterbi_joshua() -> Joshua representation of the best derivation."""
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":45
- *         return hg
- * 
- *     def viterbi_joshua(self):             # <<<<<<<<<<<<<<
- *         """hg.viterbi_joshua() -> Joshua representation of the best derivation."""
- *         return unicode(hypergraph.JoshuaVisualizationString(self.hg[0]).c_str(), 'utf8')
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
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   __Pyx_XDECREF(__pyx_t_1);
   __Pyx_XDECREF(__pyx_t_2);
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 }
 static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_14generator4(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":49
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- * 
- *     def kbest(self, size):             # <<<<<<<<<<<<<<
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- *         cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal]* derivations = new kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal](self.hg[0], size)
- */
-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_13kbest(PyObject *__pyx_v_self, PyObject *__pyx_v_size); /*proto*/
 static char __pyx_doc_4cdec_5_cdec_10Hypergraph_12kbest[] = "hg.kbest(size) -> List of k-best hypotheses in the hypergraph.";
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-
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+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":49
+ *         return unicode(hypergraph.JoshuaVisualizationString(self.hg[0]).c_str(), 'utf8')
+ * 
+ *     def kbest(self, size):             # <<<<<<<<<<<<<<
+ *         """hg.kbest(size) -> List of k-best hypotheses in the hypergraph."""
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal, kbest.NoFilter[vector[int]]]* derivations = new kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal, kbest.NoFilter[vector[int]]](self.hg[0], size)
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_12kbest(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_size) {
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@@ -10405,7 +9738,6 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_12kbest(struct __pyx_obj_4cd
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-  /* function exit code */
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@@ -10427,15 +9759,6 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_14generator4(__pyx_Generator
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-  int __pyx_t_6;
-  int __pyx_t_7;
-  char const *__pyx_t_8;
-  PyObject *__pyx_t_9 = NULL;
-  PyObject *__pyx_t_10 = NULL;
-  PyObject *__pyx_t_11 = NULL;
-  PyObject *__pyx_t_12 = NULL;
-  PyObject *__pyx_t_13 = NULL;
-  PyObject *__pyx_t_14 = NULL;
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   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":51
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":51
  *     def kbest(self, size):
  *         """hg.kbest(size) -> List of k-best hypotheses in the hypergraph."""
- *         cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal]* derivations = new kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal](self.hg[0], size)             # <<<<<<<<<<<<<<
- *         cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal].Derivation* derivation
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal, kbest.NoFilter[vector[int]]]* derivations = new kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal, kbest.NoFilter[vector[int]]](self.hg[0], size)             # <<<<<<<<<<<<<<
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal, kbest.NoFilter[vector[int]]].Derivation* derivation
  *         cdef unsigned k
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-  __pyx_cur_scope->__pyx_v_derivations = new KBest::KBestDerivations<std::vector<WordID>,ESentenceTraversal>((__pyx_cur_scope->__pyx_v_self->hg[0]), __pyx_t_1);
+  __pyx_t_1 = __Pyx_PyInt_AsUnsignedInt(__pyx_cur_scope->__pyx_v_size); if (unlikely((__pyx_t_1 == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 51; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_cur_scope->__pyx_v_derivations = new KBest::KBestDerivations<std::vector<WordID>,ESentenceTraversal,KBest::NoFilter<std::vector<int> > >((__pyx_cur_scope->__pyx_v_self->hg[0]), __pyx_t_1);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":54
- *         cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal].Derivation* derivation
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":54
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal, kbest.NoFilter[vector[int]]].Derivation* derivation
  *         cdef unsigned k
  *         try:             # <<<<<<<<<<<<<<
  *             for k in range(size):
@@ -10470,18 +9793,18 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_14generator4(__pyx_Generator
  */
   /*try:*/ {
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":55
+    /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":55
  *         cdef unsigned k
  *         try:
  *             for k in range(size):             # <<<<<<<<<<<<<<
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+    __pyx_t_2 = __Pyx_PyInt_AsLong(__pyx_cur_scope->__pyx_v_size); if (unlikely((__pyx_t_2 == (long)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 55; __pyx_clineno = __LINE__; goto __pyx_L5;}
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-      /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":56
+      /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":56
  *         try:
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@@ -10490,7 +9813,7 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_14generator4(__pyx_Generator
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-      /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":57
+      /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":57
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       __pyx_t_3 = ((!(__pyx_cur_scope->__pyx_v_derivation != 0)) != 0);
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         goto __pyx_L8_break;
+        goto __pyx_L9;
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+      __pyx_L9:;
 
-      /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":58
+      /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":58
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":60
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-        __Pyx_XGIVEREF(__pyx_t_14);
-        __Pyx_ExceptionReset(__pyx_t_12, __pyx_t_13, __pyx_t_14);
-      }
-      __Pyx_XGIVEREF(__pyx_t_9);
-      __Pyx_XGIVEREF(__pyx_t_10);
-      __Pyx_XGIVEREF(__pyx_t_11);
-      __Pyx_ErrRestore(__pyx_t_9, __pyx_t_10, __pyx_t_11);
-      __pyx_t_9 = 0; __pyx_t_10 = 0; __pyx_t_11 = 0; __pyx_t_12 = 0; __pyx_t_13 = 0; __pyx_t_14 = 0;
-      __pyx_lineno = __pyx_t_6; __pyx_clineno = __pyx_t_7; __pyx_filename = __pyx_t_8;
-      goto __pyx_L1_error;
+      __Pyx_ErrFetch(&__pyx_exc_type, &__pyx_exc_value, &__pyx_exc_tb);
+      __pyx_exc_lineno = __pyx_lineno;
+      goto __pyx_L6;
     }
     __pyx_L6:;
+    delete __pyx_cur_scope->__pyx_v_derivations;
+    switch (__pyx_why) {
+      case 4: {
+        __Pyx_ErrRestore(__pyx_exc_type, __pyx_exc_value, __pyx_exc_tb);
+        __pyx_lineno = __pyx_exc_lineno;
+        __pyx_exc_type = 0;
+        __pyx_exc_value = 0;
+        __pyx_exc_tb = 0;
+        goto __pyx_L1_error;
+      }
+    }
   }
-
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":49
- *         return unicode(hypergraph.JoshuaVisualizationString(self.hg[0]).c_str(), 'utf8')
- * 
- *     def kbest(self, size):             # <<<<<<<<<<<<<<
- *         """hg.kbest(size) -> List of k-best hypotheses in the hypergraph."""
- *         cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal]* derivations = new kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal](self.hg[0], size)
- */
-
-  /* function exit code */
   PyErr_SetNone(PyExc_StopIteration);
   goto __pyx_L0;
   __pyx_L1_error:;
@@ -10609,28 +9913,26 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_14generator4(__pyx_Generator
 }
 static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_17generator5(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":62
- *             del derivations
- * 
- *     def kbest_trees(self, size):             # <<<<<<<<<<<<<<
- *         """hg.kbest_trees(size) -> List of k-best trees in the hypergraph."""
- *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal]* f_derivations = new kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal](self.hg[0], size)
- */
-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_16kbest_trees(PyObject *__pyx_v_self, PyObject *__pyx_v_size); /*proto*/
-static char __pyx_doc_4cdec_5_cdec_10Hypergraph_15kbest_trees[] = "hg.kbest_trees(size) -> List of k-best trees in the hypergraph.";
+static char __pyx_doc_4cdec_5_cdec_10Hypergraph_15kbest_trees[] = "hg.kbest_trees(size) -> List of k-best trees in the hypergrapt.NoFilter.";
 static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_16kbest_trees(PyObject *__pyx_v_self, PyObject *__pyx_v_size) {
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-
-  /* function exit code */
   __Pyx_RefNannyFinishContext();
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 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":62
+ *             del derivations
+ * 
+ *     def kbest_trees(self, size):             # <<<<<<<<<<<<<<
+ *         """hg.kbest_trees(size) -> List of k-best trees in the hypergrapt.NoFilter."""
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.NoFilter[vector[int]]]* f_derivations = new kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.NoFilter[vector[int]]](self.hg[0], size)
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_15kbest_trees(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_size) {
   struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *__pyx_cur_scope;
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@@ -10658,7 +9960,6 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_15kbest_trees(struct __pyx_o
     return (PyObject *) gen;
   }
 
-  /* function exit code */
   __pyx_r = Py_None; __Pyx_INCREF(Py_None);
   goto __pyx_L0;
   __pyx_L1_error:;
@@ -10682,15 +9983,6 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_17generator5(__pyx_Generator
   int __pyx_t_5;
   PyObject *__pyx_t_6 = NULL;
   PyObject *__pyx_t_7 = NULL;
-  int __pyx_t_8;
-  int __pyx_t_9;
-  char const *__pyx_t_10;
-  PyObject *__pyx_t_11 = NULL;
-  PyObject *__pyx_t_12 = NULL;
-  PyObject *__pyx_t_13 = NULL;
-  PyObject *__pyx_t_14 = NULL;
-  PyObject *__pyx_t_15 = NULL;
-  PyObject *__pyx_t_16 = NULL;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
@@ -10706,28 +9998,28 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_17generator5(__pyx_Generator
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":64
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":64
  *     def kbest_trees(self, size):
- *         """hg.kbest_trees(size) -> List of k-best trees in the hypergraph."""
- *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal]* f_derivations = new kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal](self.hg[0], size)             # <<<<<<<<<<<<<<
- *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal].Derivation* f_derivation
- *         cdef kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal]* e_derivations = new kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal](self.hg[0], size)
- */
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-
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":66
- *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal]* f_derivations = new kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal](self.hg[0], size)
- *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal].Derivation* f_derivation
- *         cdef kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal]* e_derivations = new kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal](self.hg[0], size)             # <<<<<<<<<<<<<<
- *         cdef kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal].Derivation* e_derivation
+ *         """hg.kbest_trees(size) -> List of k-best trees in the hypergrapt.NoFilter."""
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.NoFilter[vector[int]]]* f_derivations = new kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.NoFilter[vector[int]]](self.hg[0], size)             # <<<<<<<<<<<<<<
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.NoFilter[vector[int]]].Derivation* f_derivation
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal, kbest.NoFilter[vector[int]]]* e_derivations = new kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal, kbest.NoFilter[vector[int]]](self.hg[0], size)
+ */
+  __pyx_t_1 = __Pyx_PyInt_AsUnsignedInt(__pyx_cur_scope->__pyx_v_size); if (unlikely((__pyx_t_1 == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 64; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_cur_scope->__pyx_v_f_derivations = new KBest::KBestDerivations<std::vector<WordID>,FTreeTraversal,KBest::NoFilter<std::vector<int> > >((__pyx_cur_scope->__pyx_v_self->hg[0]), __pyx_t_1);
+
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":66
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.NoFilter[vector[int]]]* f_derivations = new kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.NoFilter[vector[int]]](self.hg[0], size)
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.NoFilter[vector[int]]].Derivation* f_derivation
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal, kbest.NoFilter[vector[int]]]* e_derivations = new kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal, kbest.NoFilter[vector[int]]](self.hg[0], size)             # <<<<<<<<<<<<<<
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal, kbest.NoFilter[vector[int]]].Derivation* e_derivation
  *         cdef unsigned k
  */
-  __pyx_t_1 = __Pyx_PyInt_As_unsigned_int(__pyx_cur_scope->__pyx_v_size); if (unlikely((__pyx_t_1 == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 66; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_cur_scope->__pyx_v_e_derivations = new KBest::KBestDerivations<std::vector<WordID>,ETreeTraversal>((__pyx_cur_scope->__pyx_v_self->hg[0]), __pyx_t_1);
+  __pyx_t_1 = __Pyx_PyInt_AsUnsignedInt(__pyx_cur_scope->__pyx_v_size); if (unlikely((__pyx_t_1 == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 66; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_cur_scope->__pyx_v_e_derivations = new KBest::KBestDerivations<std::vector<WordID>,ETreeTraversal,KBest::NoFilter<std::vector<int> > >((__pyx_cur_scope->__pyx_v_self->hg[0]), __pyx_t_1);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":69
- *         cdef kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal].Derivation* e_derivation
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":69
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal, kbest.NoFilter[vector[int]]].Derivation* e_derivation
  *         cdef unsigned k
  *         try:             # <<<<<<<<<<<<<<
  *             for k in range(size):
@@ -10735,18 +10027,18 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_17generator5(__pyx_Generator
  */
   /*try:*/ {
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":70
+    /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":70
  *         cdef unsigned k
  *         try:
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  *                 f_derivation = f_derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)
  *                 e_derivation = e_derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)
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+    __pyx_t_2 = __Pyx_PyInt_AsLong(__pyx_cur_scope->__pyx_v_size); if (unlikely((__pyx_t_2 == (long)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 70; __pyx_clineno = __LINE__; goto __pyx_L5;}
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       __pyx_cur_scope->__pyx_v_k = __pyx_t_1;
 
-      /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":71
+      /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":71
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@@ -10755,7 +10047,7 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_17generator5(__pyx_Generator
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-      /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":72
+      /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":72
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  *                 e_derivation = e_derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)             # <<<<<<<<<<<<<<
@@ -10764,7 +10056,7 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_17generator5(__pyx_Generator
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-      /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":73
+      /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":73
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@@ -10780,74 +10072,78 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_17generator5(__pyx_Generator
       }
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+        goto __pyx_L9;
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+      __pyx_L9:;
 
-      /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":74
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-      /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":75
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-      __Pyx_XDECREF_SET(__pyx_cur_scope->__pyx_v_e_tree, ((PyObject*)__pyx_t_6));
+      __Pyx_DECREF(((PyObject *)__pyx_t_7)); __pyx_t_7 = 0;
+      __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_e_tree));
+      __Pyx_XDECREF(((PyObject *)__pyx_cur_scope->__pyx_v_e_tree));
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+      __pyx_cur_scope->__pyx_v_e_tree = ((PyObject*)__pyx_t_6);
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-      /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":76
+      /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":76
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+      __pyx_t_6 = PyTuple_New(2); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 76; __pyx_clineno = __LINE__; goto __pyx_L5;}
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-      __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_f_tree);
-      __Pyx_INCREF(__pyx_cur_scope->__pyx_v_e_tree);
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-      __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_e_tree);
-      __pyx_r = __pyx_t_6;
+      __Pyx_INCREF(((PyObject *)__pyx_cur_scope->__pyx_v_f_tree));
+      PyTuple_SET_ITEM(__pyx_t_6, 0, ((PyObject *)__pyx_cur_scope->__pyx_v_f_tree));
+      __Pyx_GIVEREF(((PyObject *)__pyx_cur_scope->__pyx_v_f_tree));
+      __Pyx_INCREF(((PyObject *)__pyx_cur_scope->__pyx_v_e_tree));
+      PyTuple_SET_ITEM(__pyx_t_6, 1, ((PyObject *)__pyx_cur_scope->__pyx_v_e_tree));
+      __Pyx_GIVEREF(((PyObject *)__pyx_cur_scope->__pyx_v_e_tree));
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       __pyx_t_2 = __pyx_cur_scope->__pyx_t_1;
-      if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 76; __pyx_clineno = __LINE__; goto __pyx_L5_error;}
+      if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 76; __pyx_clineno = __LINE__; goto __pyx_L5;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":78
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":78
  *                 yield (f_tree, e_tree)
  *         finally:
  *             del f_derivations             # <<<<<<<<<<<<<<
@@ -10872,79 +10168,41 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_17generator5(__pyx_Generator
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- *     def kbest_features(self, size):
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-      __Pyx_XGOTREF(__pyx_t_16);
-      __pyx_t_8 = __pyx_lineno; __pyx_t_9 = __pyx_clineno; __pyx_t_10 = __pyx_filename;
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-        /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":78
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- *         finally:
- *             del f_derivations             # <<<<<<<<<<<<<<
- *             del e_derivations
- * 
- */
-        delete __pyx_cur_scope->__pyx_v_f_derivations;
+      __Pyx_ErrFetch(&__pyx_exc_type, &__pyx_exc_value, &__pyx_exc_tb);
+      __pyx_exc_lineno = __pyx_lineno;
+      goto __pyx_L6;
+    }
+    __pyx_L6:;
+    delete __pyx_cur_scope->__pyx_v_f_derivations;
 
-        /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":79
+    /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":79
  *         finally:
  *             del f_derivations
  *             del e_derivations             # <<<<<<<<<<<<<<
  * 
  *     def kbest_features(self, size):
  */
-        delete __pyx_cur_scope->__pyx_v_e_derivations;
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-      if (PY_MAJOR_VERSION >= 3) {
-        __Pyx_XGIVEREF(__pyx_t_14);
-        __Pyx_XGIVEREF(__pyx_t_15);
-        __Pyx_XGIVEREF(__pyx_t_16);
-        __Pyx_ExceptionReset(__pyx_t_14, __pyx_t_15, __pyx_t_16);
+    delete __pyx_cur_scope->__pyx_v_e_derivations;
+    switch (__pyx_why) {
+      case 4: {
+        __Pyx_ErrRestore(__pyx_exc_type, __pyx_exc_value, __pyx_exc_tb);
+        __pyx_lineno = __pyx_exc_lineno;
+        __pyx_exc_type = 0;
+        __pyx_exc_value = 0;
+        __pyx_exc_tb = 0;
+        goto __pyx_L1_error;
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-      __Pyx_XGIVEREF(__pyx_t_11);
-      __Pyx_XGIVEREF(__pyx_t_12);
-      __Pyx_XGIVEREF(__pyx_t_13);
-      __Pyx_ErrRestore(__pyx_t_11, __pyx_t_12, __pyx_t_13);
-      __pyx_t_11 = 0; __pyx_t_12 = 0; __pyx_t_13 = 0; __pyx_t_14 = 0; __pyx_t_15 = 0; __pyx_t_16 = 0;
-      __pyx_lineno = __pyx_t_8; __pyx_clineno = __pyx_t_9; __pyx_filename = __pyx_t_10;
-      goto __pyx_L1_error;
     }
-    __pyx_L6:;
   }
-
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":62
- *             del derivations
- * 
- *     def kbest_trees(self, size):             # <<<<<<<<<<<<<<
- *         """hg.kbest_trees(size) -> List of k-best trees in the hypergraph."""
- *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal]* f_derivations = new kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal](self.hg[0], size)
- */
-
-  /* function exit code */
   PyErr_SetNone(PyExc_StopIteration);
   goto __pyx_L0;
   __pyx_L1_error:;
@@ -10960,14 +10218,6 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_17generator5(__pyx_Generator
 }
 static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_20generator6(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":81
- *             del e_derivations
- * 
- *     def kbest_features(self, size):             # <<<<<<<<<<<<<<
- *         """hg.kbest_trees(size) -> List of k-best feature vectors in the hypergraph."""
- *         cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal]* derivations = new kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal](self.hg[0], size)
- */
-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_19kbest_features(PyObject *__pyx_v_self, PyObject *__pyx_v_size); /*proto*/
 static char __pyx_doc_4cdec_5_cdec_10Hypergraph_18kbest_features[] = "hg.kbest_trees(size) -> List of k-best feature vectors in the hypergraph.";
@@ -10976,12 +10226,18 @@ static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_19kbest_features(PyObject *_
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-
-  /* function exit code */
   __Pyx_RefNannyFinishContext();
   return __pyx_r;
 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":81
+ *             del e_derivations
+ * 
+ *     def kbest_features(self, size):             # <<<<<<<<<<<<<<
+ *         """hg.kbest_trees(size) -> List of k-best feature vectors in the hypergraph."""
+ *         cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal, kbest.NoFilter[FastSparseVector[double]]]* derivations = new kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal, kbest.NoFilter[FastSparseVector[double]]](self.hg[0], size)
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_18kbest_features(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_size) {
   struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *__pyx_cur_scope;
   PyObject *__pyx_r = NULL;
@@ -11009,7 +10265,6 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_18kbest_features(struct __py
     return (PyObject *) gen;
   }
 
-  /* function exit code */
   __pyx_r = Py_None; __Pyx_INCREF(Py_None);
   goto __pyx_L0;
   __pyx_L1_error:;
@@ -11030,15 +10285,6 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_20generator6(__pyx_Generator
   long __pyx_t_2;
   int __pyx_t_3;
   PyObject *__pyx_t_4 = NULL;
-  int __pyx_t_5;
-  int __pyx_t_6;
-  char const *__pyx_t_7;
-  PyObject *__pyx_t_8 = NULL;
-  PyObject *__pyx_t_9 = NULL;
-  PyObject *__pyx_t_10 = NULL;
-  PyObject *__pyx_t_11 = NULL;
-  PyObject *__pyx_t_12 = NULL;
-  PyObject *__pyx_t_13 = NULL;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
@@ -11054,17 +10300,17 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_20generator6(__pyx_Generator
   __pyx_L3_first_run:;
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":83
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":83
  *     def kbest_features(self, size):
  *         """hg.kbest_trees(size) -> List of k-best feature vectors in the hypergraph."""
- *         cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal]* derivations = new kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal](self.hg[0], size)             # <<<<<<<<<<<<<<
- *         cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal].Derivation* derivation
+ *         cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal, kbest.NoFilter[FastSparseVector[double]]]* derivations = new kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal, kbest.NoFilter[FastSparseVector[double]]](self.hg[0], size)             # <<<<<<<<<<<<<<
+ *         cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal, kbest.NoFilter[FastSparseVector[double]]].Derivation* derivation
  *         cdef SparseVector fmap
  */
-  __pyx_t_1 = __Pyx_PyInt_As_unsigned_int(__pyx_cur_scope->__pyx_v_size); if (unlikely((__pyx_t_1 == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 83; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_cur_scope->__pyx_v_derivations = new KBest::KBestDerivations<FastSparseVector<weight_t>,FeatureVectorTraversal>((__pyx_cur_scope->__pyx_v_self->hg[0]), __pyx_t_1);
+  __pyx_t_1 = __Pyx_PyInt_AsUnsignedInt(__pyx_cur_scope->__pyx_v_size); if (unlikely((__pyx_t_1 == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 83; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_cur_scope->__pyx_v_derivations = new KBest::KBestDerivations<FastSparseVector<weight_t>,FeatureVectorTraversal,KBest::NoFilter<FastSparseVector<double> > >((__pyx_cur_scope->__pyx_v_self->hg[0]), __pyx_t_1);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":87
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":87
  *         cdef SparseVector fmap
  *         cdef unsigned k
  *         try:             # <<<<<<<<<<<<<<
@@ -11073,18 +10319,18 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_20generator6(__pyx_Generator
  */
   /*try:*/ {
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":88
+    /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":88
  *         cdef unsigned k
  *         try:
  *             for k in range(size):             # <<<<<<<<<<<<<<
  *                 derivation = derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)
  *                 if not derivation: break
  */
-    __pyx_t_2 = __Pyx_PyInt_As_long(__pyx_cur_scope->__pyx_v_size); if (unlikely((__pyx_t_2 == (long)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 88; __pyx_clineno = __LINE__; goto __pyx_L5_error;}
+    __pyx_t_2 = __Pyx_PyInt_AsLong(__pyx_cur_scope->__pyx_v_size); if (unlikely((__pyx_t_2 == (long)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 88; __pyx_clineno = __LINE__; goto __pyx_L5;}
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       __pyx_cur_scope->__pyx_v_k = __pyx_t_1;
 
-      /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":89
+      /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":89
  *         try:
  *             for k in range(size):
  *                 derivation = derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)             # <<<<<<<<<<<<<<
@@ -11093,7 +10339,7 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_20generator6(__pyx_Generator
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       __pyx_cur_scope->__pyx_v_derivation = __pyx_cur_scope->__pyx_v_derivations->LazyKthBest((__pyx_cur_scope->__pyx_v_self->hg->nodes_.size() - 1), __pyx_cur_scope->__pyx_v_k);
 
-      /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":90
+      /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":90
  *             for k in range(size):
  *                 derivation = derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)
  *                 if not derivation: break             # <<<<<<<<<<<<<<
@@ -11103,24 +10349,27 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_20generator6(__pyx_Generator
       __pyx_t_3 = ((!(__pyx_cur_scope->__pyx_v_derivation != 0)) != 0);
       if (__pyx_t_3) {
         goto __pyx_L8_break;
+        goto __pyx_L9;
       }
+      __pyx_L9:;
 
-      /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":91
+      /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":91
  *                 derivation = derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)
  *                 if not derivation: break
  *                 fmap = SparseVector.__new__(SparseVector)             # <<<<<<<<<<<<<<
  *                 fmap.vector = new FastSparseVector[weight_t](derivation._yield)
  *                 yield fmap
  */
-      __pyx_t_4 = __pyx_tp_new_4cdec_5_cdec_SparseVector(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SparseVector)), __pyx_empty_tuple, NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L5_error;}
+      __pyx_t_4 = __pyx_tp_new_4cdec_5_cdec_SparseVector(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SparseVector)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L5;}
       __Pyx_GOTREF(__pyx_t_4);
-      if (!(likely(__Pyx_TypeTest(__pyx_t_4, __pyx_ptype_4cdec_5_cdec_SparseVector)))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L5_error;}
+      if (!(likely(__Pyx_TypeTest(__pyx_t_4, __pyx_ptype_4cdec_5_cdec_SparseVector)))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L5;}
       __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_fmap));
-      __Pyx_XDECREF_SET(__pyx_cur_scope->__pyx_v_fmap, ((struct __pyx_obj_4cdec_5_cdec_SparseVector *)__pyx_t_4));
+      __Pyx_XDECREF(((PyObject *)__pyx_cur_scope->__pyx_v_fmap));
       __Pyx_GIVEREF(__pyx_t_4);
+      __pyx_cur_scope->__pyx_v_fmap = ((struct __pyx_obj_4cdec_5_cdec_SparseVector *)__pyx_t_4);
       __pyx_t_4 = 0;
 
-      /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":92
+      /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":92
  *                 if not derivation: break
  *                 fmap = SparseVector.__new__(SparseVector)
  *                 fmap.vector = new FastSparseVector[weight_t](derivation._yield)             # <<<<<<<<<<<<<<
@@ -11129,7 +10378,7 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_20generator6(__pyx_Generator
  */
       __pyx_cur_scope->__pyx_v_fmap->vector = new FastSparseVector<weight_t>(__pyx_cur_scope->__pyx_v_derivation->yield);
 
-      /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":93
+      /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":93
  *                 fmap = SparseVector.__new__(SparseVector)
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 /* Python wrapper */
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+ */
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 }
 
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 {
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@@ -11325,9 +11299,9 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_23generator7(__pyx_Generator
     return NULL;
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":99
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":147
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@@ -11338,11 +11312,11 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_23generator7(__pyx_Generator
     __pyx_t_1 = new std::vector<HypergraphSampler::Hypothesis>();
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-    {__pyx_filename = __pyx_f[3]; __pyx_lineno = 99; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[3]; __pyx_lineno = 147; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":100
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":148
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@@ -11351,7 +11325,7 @@ static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_23generator7(__pyx_Generator
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":102
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":150
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":103
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":106
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-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":108
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 /* Python wrapper */
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+static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_34sample_trees(PyObject *__pyx_v_self, PyObject *__pyx_arg_n); /*proto*/
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+ * 
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+ */
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+static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_33sample_trees(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, unsigned int __pyx_v_n) {
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 }
 
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+static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_35generator11(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
 {
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+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees *__pyx_cur_scope = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees *)__pyx_generator->closure);
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":110
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":158
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-    {__pyx_filename = __pyx_f[3]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[3]; __pyx_lineno = 158; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":111
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":159
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":113
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":114
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":117
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":165
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+      __Pyx_ErrFetch(&__pyx_exc_type, &__pyx_exc_value, &__pyx_exc_tb);
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-
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":108
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-  /* function exit code */
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- */
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+static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_37intersect(PyObject *__pyx_v_self, PyObject *__pyx_v_inp); /*proto*/
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-
-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":167
+ *            del trees
+ * 
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+ *         """hg.intersect(Lattice/string): Intersect the hypergraph with the provided reference."""
+ *         cdef Lattice lat
+ */
+
+static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_36intersect(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_inp) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":122
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":123
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":124
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":172
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":125
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":127
+    /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":175
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+    __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 175; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    {__pyx_filename = __pyx_f[3]; __pyx_lineno = 127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[3]; __pyx_lineno = 175; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":128
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":176
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+  __pyx_t_4 = __Pyx_PyBool_FromLong(HG::Intersect((__pyx_v_lat->lattice[0]), __pyx_v_self->hg)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 176; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":119
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- * 
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- *         """hg.intersect(Lattice/string): Intersect the hypergraph with the provided reference."""
- *         cdef Lattice lat
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
   __pyx_L1_error:;
   __Pyx_XDECREF(__pyx_t_3);
   __Pyx_XDECREF(__pyx_t_4);
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 }
 
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- * 
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-static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_30prune(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
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+static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_39prune(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
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-
-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":178
+ *         return hypergraph.Intersect(lat.lattice[0], self.hg)
+ * 
+ *     def prune(self, beam_alpha=0, density=0, **kwargs):             # <<<<<<<<<<<<<<
+ *         """hg.prune(beam_alpha=0, density=0): Prune the hypergraph.
+ *         beam_alpha: use beam pruning
+ */
+
+static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_38prune(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_beam_alpha, PyObject *__pyx_v_density, PyObject *__pyx_v_kwargs) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":134
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  *         density: use density pruning"""
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":135
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":183
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":136
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":137
+    /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":185
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":138
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+  __pyx_t_4 = __pyx_PyFloat_AsDouble(__pyx_v_density); if (unlikely((__pyx_t_4 == (double)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 186; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":139
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":187
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":140
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+ */
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+    __pyx_t_4 = ((struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphEdge *)((struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *)__pyx_t_3)->__pyx_vtab)->init(((struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *)__pyx_t_3), __pyx_cur_scope->__pyx_v_self->hg, __pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 212; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 164; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 212; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":161
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-  /* function exit code */
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-
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":167
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- *     property nodes:
- *         def __get__(self):             # <<<<<<<<<<<<<<
- *             cdef unsigned i
- *             for i in range(self.hg.nodes_.size()):
- */
+static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_5nodes_2generator13(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
 
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_5nodes_1__get__(PyObject *__pyx_v_self); /*proto*/
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-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":215
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+ *     property nodes:
+ *         def __get__(self):             # <<<<<<<<<<<<<<
+ *             cdef unsigned i
+ *             for i in range(self.hg.nodes_.size()):
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_5nodes___get__(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__ *__pyx_cur_scope;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *__pyx_cur_scope;
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+  __pyx_cur_scope = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *)__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_17___get__(__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_17___get__, __pyx_empty_tuple, NULL);
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+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_4cdec_5_cdec_10Hypergraph_5nodes_2generator13, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 215; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -12582,9 +12435,9 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_5nodes___get__(struct __pyx_
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 }
 
-static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_5nodes_2generator10(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
+static PyObject *__pyx_gb_4cdec_5_cdec_10Hypergraph_5nodes_2generator13(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
 {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__ *__pyx_cur_scope = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__ *)__pyx_generator->closure);
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *__pyx_cur_scope = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *)__pyx_generator->closure);
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-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 167; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 215; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":169
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":217
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":170
+    /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":218
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+    __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_HypergraphNode)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 218; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_4 = ((struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphNode *)((struct __pyx_obj_4cdec_5_cdec_HypergraphNode *)__pyx_t_3)->__pyx_vtab)->init(((struct __pyx_obj_4cdec_5_cdec_HypergraphNode *)__pyx_t_3), __pyx_cur_scope->__pyx_v_self->hg, __pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 218; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":167
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-
-  /* function exit code */
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-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":173
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- *     property goal:
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-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_4goal_1__get__(PyObject *__pyx_v_self); /*proto*/
 static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_4goal_1__get__(PyObject *__pyx_v_self) {
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-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":221
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+ * 
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_4goal___get__(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":174
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":222
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":173
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-
-  /* function exit code */
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 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_6npaths_1__get__(PyObject *__pyx_v_self); /*proto*/
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+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":225
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 static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_6npaths___get__(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":178
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-  /* function exit code */
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+static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_47inside_outside(PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *unused); /*proto*/
+static char __pyx_doc_4cdec_5_cdec_10Hypergraph_46inside_outside[] = "hg.inside_outside() -> SparseVector with inside-outside scores for each feature.";
+static PyObject *__pyx_pw_4cdec_5_cdec_10Hypergraph_47inside_outside(PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *unused) {
   PyObject *__pyx_r = 0;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("inside_outside (wrapper)", 0);
-  __pyx_r = __pyx_pf_4cdec_5_cdec_10Hypergraph_37inside_outside(((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)__pyx_v_self));
-
-  /* function exit code */
+  __pyx_r = __pyx_pf_4cdec_5_cdec_10Hypergraph_46inside_outside(((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)__pyx_v_self));
   __Pyx_RefNannyFinishContext();
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 }
 
-static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_37inside_outside(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self) {
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":228
+ *             return self.hg.NumberOfPaths()
+ * 
+ *     def inside_outside(self):             # <<<<<<<<<<<<<<
+ *         """hg.inside_outside() -> SparseVector with inside-outside scores for each feature."""
+ *         cdef FastSparseVector[prob_t]* result = new FastSparseVector[prob_t]()
+ */
+
+static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_46inside_outside(struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_self) {
   FastSparseVector<prob_t> *__pyx_v_result;
   prob_t __pyx_v_z;
   struct __pyx_obj_4cdec_5_cdec_SparseVector *__pyx_v_vector = 0;
@@ -12835,7 +12658,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_37inside_outside(struct __py
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("inside_outside", 0);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":182
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":230
  *     def inside_outside(self):
  *         """hg.inside_outside() -> SparseVector with inside-outside scores for each feature."""
  *         cdef FastSparseVector[prob_t]* result = new FastSparseVector[prob_t]()             # <<<<<<<<<<<<<<
@@ -12844,7 +12667,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_37inside_outside(struct __py
  */
   __pyx_v_result = new FastSparseVector<prob_t>();
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":183
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":231
  *         """hg.inside_outside() -> SparseVector with inside-outside scores for each feature."""
  *         cdef FastSparseVector[prob_t]* result = new FastSparseVector[prob_t]()
  *         cdef prob_t z = hypergraph.InsideOutside(self.hg[0], result)             # <<<<<<<<<<<<<<
@@ -12853,7 +12676,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_37inside_outside(struct __py
  */
   __pyx_v_z = InsideOutside<prob_t, EdgeProb, SparseVector<prob_t>, EdgeFeaturesAndProbWeightFunction>((__pyx_v_self->hg[0]), __pyx_v_result);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":184
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":232
  *         cdef FastSparseVector[prob_t]* result = new FastSparseVector[prob_t]()
  *         cdef prob_t z = hypergraph.InsideOutside(self.hg[0], result)
  *         result[0] /= z             # <<<<<<<<<<<<<<
@@ -12862,20 +12685,20 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_37inside_outside(struct __py
  */
   (__pyx_v_result[0]) /= __pyx_v_z;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":185
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":233
  *         cdef prob_t z = hypergraph.InsideOutside(self.hg[0], result)
  *         result[0] /= z
  *         cdef SparseVector vector = SparseVector.__new__(SparseVector)             # <<<<<<<<<<<<<<
  *         vector.vector = new FastSparseVector[double]()
  *         cdef FastSparseVector[prob_t].const_iterator* it = new FastSparseVector[prob_t].const_iterator(result[0], False)
  */
-  __pyx_t_1 = __pyx_tp_new_4cdec_5_cdec_SparseVector(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SparseVector)), __pyx_empty_tuple, NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 185; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __pyx_tp_new_4cdec_5_cdec_SparseVector(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SparseVector)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 233; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  if (!(likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_4cdec_5_cdec_SparseVector)))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 185; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (!(likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_4cdec_5_cdec_SparseVector)))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 233; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_vector = ((struct __pyx_obj_4cdec_5_cdec_SparseVector *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":186
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":234
  *         result[0] /= z
  *         cdef SparseVector vector = SparseVector.__new__(SparseVector)
  *         vector.vector = new FastSparseVector[double]()             # <<<<<<<<<<<<<<
@@ -12884,7 +12707,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_37inside_outside(struct __py
  */
   __pyx_v_vector->vector = new FastSparseVector<double>();
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":187
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":235
  *         cdef SparseVector vector = SparseVector.__new__(SparseVector)
  *         vector.vector = new FastSparseVector[double]()
  *         cdef FastSparseVector[prob_t].const_iterator* it = new FastSparseVector[prob_t].const_iterator(result[0], False)             # <<<<<<<<<<<<<<
@@ -12893,7 +12716,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_37inside_outside(struct __py
  */
   __pyx_v_it = new FastSparseVector<prob_t>::const_iterator((__pyx_v_result[0]), 0);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":189
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":237
  *         cdef FastSparseVector[prob_t].const_iterator* it = new FastSparseVector[prob_t].const_iterator(result[0], False)
  *         cdef unsigned i
  *         for i in range(result.size()):             # <<<<<<<<<<<<<<
@@ -12904,7 +12727,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_37inside_outside(struct __py
   for (__pyx_t_3 = 0; __pyx_t_3 < __pyx_t_2; __pyx_t_3+=1) {
     __pyx_v_i = __pyx_t_3;
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":190
+    /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":238
  *         cdef unsigned i
  *         for i in range(result.size()):
  *             vector.vector.set_value(it[0].ptr().first, log(it[0].ptr().second))             # <<<<<<<<<<<<<<
@@ -12913,7 +12736,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_37inside_outside(struct __py
  */
     __pyx_v_vector->vector->set_value((__pyx_v_it[0]).operator->()->first, log((__pyx_v_it[0]).operator->()->second));
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":191
+    /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":239
  *         for i in range(result.size()):
  *             vector.vector.set_value(it[0].ptr().first, log(it[0].ptr().second))
  *             pinc(it[0]) # ++it             # <<<<<<<<<<<<<<
@@ -12923,7 +12746,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_37inside_outside(struct __py
     (++(__pyx_v_it[0]));
   }
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":192
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":240
  *             vector.vector.set_value(it[0].ptr().first, log(it[0].ptr().second))
  *             pinc(it[0]) # ++it
  *         del it             # <<<<<<<<<<<<<<
@@ -12932,7 +12755,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_37inside_outside(struct __py
  */
   delete __pyx_v_it;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":193
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":241
  *             pinc(it[0]) # ++it
  *         del it
  *         del result             # <<<<<<<<<<<<<<
@@ -12941,7 +12764,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_37inside_outside(struct __py
  */
   delete __pyx_v_result;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":194
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":242
  *         del it
  *         del result
  *         return vector             # <<<<<<<<<<<<<<
@@ -12953,15 +12776,8 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_37inside_outside(struct __py
   __pyx_r = ((PyObject *)__pyx_v_vector);
   goto __pyx_L0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":180
- *             return self.hg.NumberOfPaths()
- * 
- *     def inside_outside(self):             # <<<<<<<<<<<<<<
- *         """hg.inside_outside() -> SparseVector with inside-outside scores for each feature."""
- *         cdef FastSparseVector[prob_t]* result = new FastSparseVector[prob_t]()
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
   __pyx_L1_error:;
   __Pyx_XDECREF(__pyx_t_1);
   __Pyx_AddTraceback("cdec._cdec.Hypergraph.inside_outside", __pyx_clineno, __pyx_lineno, __pyx_filename);
@@ -12973,7 +12789,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_10Hypergraph_37inside_outside(struct __py
   return __pyx_r;
 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":201
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":249
  *     cdef public TRule trule
  * 
  *     cdef init(self, hypergraph.Hypergraph* hg, unsigned i):             # <<<<<<<<<<<<<<
@@ -12990,7 +12806,7 @@ static PyObject *__pyx_f_4cdec_5_cdec_14HypergraphEdge_init(struct __pyx_obj_4cd
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("init", 0);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":202
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":250
  * 
  *     cdef init(self, hypergraph.Hypergraph* hg, unsigned i):
  *         self.hg = hg             # <<<<<<<<<<<<<<
@@ -12999,7 +12815,7 @@ static PyObject *__pyx_f_4cdec_5_cdec_14HypergraphEdge_init(struct __pyx_obj_4cd
  */
   __pyx_v_self->hg = __pyx_v_hg;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":203
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":251
  *     cdef init(self, hypergraph.Hypergraph* hg, unsigned i):
  *         self.hg = hg
  *         self.edge = &hg.edges_[i]             # <<<<<<<<<<<<<<
@@ -13008,23 +12824,23 @@ static PyObject *__pyx_f_4cdec_5_cdec_14HypergraphEdge_init(struct __pyx_obj_4cd
  */
   __pyx_v_self->edge = (&(__pyx_v_hg->edges_[__pyx_v_i]));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":204
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":252
  *         self.hg = hg
  *         self.edge = &hg.edges_[i]
  *         self.trule = TRule.__new__(TRule)             # <<<<<<<<<<<<<<
  *         self.trule.rule = new shared_ptr[grammar.TRule](self.edge.rule_)
  *         return self
  */
-  __pyx_t_1 = __pyx_tp_new_4cdec_5_cdec_TRule(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_TRule)), __pyx_empty_tuple, NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 204; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __pyx_tp_new_4cdec_5_cdec_TRule(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_TRule)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 252; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  if (!(likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_4cdec_5_cdec_TRule)))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 204; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (!(likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_4cdec_5_cdec_TRule)))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 252; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GIVEREF(__pyx_t_1);
   __Pyx_GOTREF(__pyx_v_self->trule);
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   __pyx_t_1 = 0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":205
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":253
  *         self.edge = &hg.edges_[i]
  *         self.trule = TRule.__new__(TRule)
  *         self.trule.rule = new shared_ptr[grammar.TRule](self.edge.rule_)             # <<<<<<<<<<<<<<
@@ -13033,7 +12849,7 @@ static PyObject *__pyx_f_4cdec_5_cdec_14HypergraphEdge_init(struct __pyx_obj_4cd
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   __pyx_v_self->trule->rule = new boost::shared_ptr<TRule>(__pyx_v_self->edge->rule_);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":206
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":254
  *         self.trule = TRule.__new__(TRule)
  *         self.trule.rule = new shared_ptr[grammar.TRule](self.edge.rule_)
  *         return self             # <<<<<<<<<<<<<<
@@ -13045,15 +12861,8 @@ static PyObject *__pyx_f_4cdec_5_cdec_14HypergraphEdge_init(struct __pyx_obj_4cd
   __pyx_r = ((PyObject *)__pyx_v_self);
   goto __pyx_L0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":201
- *     cdef public TRule trule
- * 
- *     cdef init(self, hypergraph.Hypergraph* hg, unsigned i):             # <<<<<<<<<<<<<<
- *         self.hg = hg
- *         self.edge = &hg.edges_[i]
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
   __pyx_L1_error:;
   __Pyx_XDECREF(__pyx_t_1);
   __Pyx_AddTraceback("cdec._cdec.HypergraphEdge.init", __pyx_clineno, __pyx_lineno, __pyx_filename);
@@ -13064,14 +12873,6 @@ static PyObject *__pyx_f_4cdec_5_cdec_14HypergraphEdge_init(struct __pyx_obj_4cd
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 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":208
- *         return self
- * 
- *     def __len__(self):             # <<<<<<<<<<<<<<
- *         return self.edge.tail_nodes_.size()
- * 
- */
-
 /* Python wrapper */
 static Py_ssize_t __pyx_pw_4cdec_5_cdec_14HypergraphEdge_1__len__(PyObject *__pyx_v_self); /*proto*/
 static Py_ssize_t __pyx_pw_4cdec_5_cdec_14HypergraphEdge_1__len__(PyObject *__pyx_v_self) {
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-
-  /* function exit code */
   __Pyx_RefNannyFinishContext();
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 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":256
+ *         return self
+ * 
+ *     def __len__(self):             # <<<<<<<<<<<<<<
+ *         return self.edge.tail_nodes_.size()
+ * 
+ */
+
 static Py_ssize_t __pyx_pf_4cdec_5_cdec_14HypergraphEdge___len__(struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *__pyx_v_self) {
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   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__len__", 0);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":209
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":257
  * 
  *     def __len__(self):
  *         return self.edge.tail_nodes_.size()             # <<<<<<<<<<<<<<
@@ -13100,28 +12907,12 @@ static Py_ssize_t __pyx_pf_4cdec_5_cdec_14HypergraphEdge___len__(struct __pyx_ob
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":208
- *         return self
- * 
- *     def __len__(self):             # <<<<<<<<<<<<<<
- *         return self.edge.tail_nodes_.size()
- * 
- */
-
-  /* function exit code */
+  __pyx_r = 0;
   __pyx_L0:;
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 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":212
- * 
- *     property head_node:
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- *             return HypergraphNode().init(self.hg, self.edge.head_node_)
- * 
- */
-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_14HypergraphEdge_9head_node_1__get__(PyObject *__pyx_v_self); /*proto*/
 static PyObject *__pyx_pw_4cdec_5_cdec_14HypergraphEdge_9head_node_1__get__(PyObject *__pyx_v_self) {
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-
-  /* function exit code */
   __Pyx_RefNannyFinishContext();
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 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":260
+ * 
+ *     property head_node:
+ *         def __get__(self):             # <<<<<<<<<<<<<<
+ *             return HypergraphNode().init(self.hg, self.edge.head_node_)
+ * 
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_14HypergraphEdge_9head_node___get__(struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *__pyx_v_self) {
   PyObject *__pyx_r = NULL;
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@@ -13145,7 +12942,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_14HypergraphEdge_9head_node___get__(struc
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":213
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":261
  *     property head_node:
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@@ -13153,24 +12950,17 @@ static PyObject *__pyx_pf_4cdec_5_cdec_14HypergraphEdge_9head_node___get__(struc
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-  __pyx_t_1 = __Pyx_PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_HypergraphNode)), __pyx_empty_tuple, NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 213; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-
-  /* function exit code */
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 /* Python wrapper */
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 static PyObject *__pyx_pf_4cdec_5_cdec_14HypergraphEdge_10tail_nodes___get__(struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *__pyx_v_self) {
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 static PyObject *__pyx_pw_4cdec_5_cdec_14HypergraphEdge_14feature_values_1__get__(PyObject *__pyx_v_self); /*proto*/
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+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":278
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+ *     property feature_values:
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+
 static PyObject *__pyx_pf_4cdec_5_cdec_14HypergraphEdge_14feature_values___get__(struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":231
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":279
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":232
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":280
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":233
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- *             cdef SparseVector vector = SparseVector.__new__(SparseVector)
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-  /* function exit code */
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 static PyObject *__pyx_pw_4cdec_5_cdec_14HypergraphEdge_4prob_1__get__(PyObject *__pyx_v_self); /*proto*/
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+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":284
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+ * 
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+
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":237
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+  __pyx_t_1 = PyFloat_FromDouble(__pyx_v_self->edge->edge_prob_.as_float()); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 285; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":236
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- *             return self.edge.edge_prob_.as_float()
- * 
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
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-/* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":239
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 static PyObject *__pyx_pw_4cdec_5_cdec_14HypergraphEdge_3__richcmp__(PyObject *__pyx_v_x, PyObject *__pyx_v_y, int __pyx_v_op); /*proto*/
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+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_x), __pyx_ptype_4cdec_5_cdec_HypergraphEdge, 1, "x", 0))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 287; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_y), __pyx_ptype_4cdec_5_cdec_HypergraphEdge, 1, "y", 0))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 287; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":287
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":242
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":240
+    /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":288
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":241
+    /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":289
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":242
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":243
+    /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":291
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":244
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+/* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":247
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 static PyObject *__pyx_pf_4cdec_5_cdec_14HypergraphEdge_5trule___get__(struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":253
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-  /* function exit code */
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 static PyObject *__pyx_pf_4cdec_5_cdec_14HypergraphNode_2id___get__(struct __pyx_obj_4cdec_5_cdec_HypergraphNode *__pyx_v_self) {
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-  /* function exit code */
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+  __pyx_cur_scope = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__ *)__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_20___get__(__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_20___get__, __pyx_empty_tuple, NULL);
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-  /* function exit code */
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 static PyObject *__pyx_pw_4cdec_5_cdec_14HypergraphNode_3cat_1__get__(PyObject *__pyx_v_self); /*proto*/
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 static PyObject *__pyx_pw_4cdec_5_cdec_14HypergraphNode_1__richcmp__(PyObject *__pyx_v_x, PyObject *__pyx_v_y, int __pyx_v_op); /*proto*/
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":281
+    /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":329
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":282
+    /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":330
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":283
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-    /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":284
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-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":285
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-  {__pyx_filename = __pyx_f[3]; __pyx_lineno = 285; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  {__pyx_filename = __pyx_f[3]; __pyx_lineno = 333; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
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-
-  /* function exit code */
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 static int __pyx_pf_4cdec_5_cdec_7Lattice___cinit__(struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self) {
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-    /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":13
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-    /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":14
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-  /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":16
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-    /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":17
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 }
 
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 }
 
-static void __pyx_pf_4cdec_5_cdec_7Lattice_4__dealloc__(struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self) {
+/* "/usr0/home/austinma/git/cdec/python/cdec/lattice.pxi":21
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+ * 
+ *     def __dealloc__(self):             # <<<<<<<<<<<<<<
+ *         del self.lattice
+ * 
+ */
+
+static void __pyx_pf_4cdec_5_cdec_7Lattice_4__dealloc__(CYTHON_UNUSED struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":22
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-  /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":27
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-  /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":28
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-  /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":31
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-    /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":32
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-    /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":33
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-  /* function exit code */
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 static int __pyx_pf_4cdec_5_cdec_7Lattice_8__setitem__(struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self, int __pyx_v_index, PyObject *__pyx_v_arcs) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":38
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-    /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":39
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 static PyObject *__pyx_pf_4cdec_5_cdec_7Lattice_16__iter__(struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self) {
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-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/lattice.pxi":74
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+ * 
+ *     def as_hypergraph(self):             # <<<<<<<<<<<<<<
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+ *         cdef Hypergraph result = Hypergraph.__new__(Hypergraph)
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_7Lattice_21as_hypergraph(struct __pyx_obj_4cdec_5_cdec_Lattice *__pyx_v_self) {
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@@ -16312,20 +15856,20 @@ static PyObject *__pyx_pf_4cdec_5_cdec_7Lattice_21as_hypergraph(struct __pyx_obj
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-  /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":76
+  /* "/usr0/home/austinma/git/cdec/python/cdec/lattice.pxi":76
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+  __pyx_t_1 = __pyx_tp_new_4cdec_5_cdec_Hypergraph(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_Hypergraph)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 76; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":77
+  /* "/usr0/home/austinma/git/cdec/python/cdec/lattice.pxi":77
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-  /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":78
+  /* "/usr0/home/austinma/git/cdec/python/cdec/lattice.pxi":78
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-  /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":79
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+  __pyx_t_3 = __pyx_convert_string_from_py_(((PyObject *)__pyx_v_plf)); if (unlikely(PyErr_Occurred())) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 79; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":80
+  /* "/usr0/home/austinma/git/cdec/python/cdec/lattice.pxi":80
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- *         """lattice.as_hypergraph() -> Hypergraph representation of the lattice."""
- *         cdef Hypergraph result = Hypergraph.__new__(Hypergraph)
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
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-    /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":5
+    /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":5
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+    goto __pyx_L3;
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":6
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":6
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-    /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":7
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-    /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":8
+    /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":8
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-    /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":9
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-    /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":10
+    /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":10
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-  /* function exit code */
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 static PyObject *__pyx_pw_4cdec_5_cdec_9Candidate_4fmap_1__get__(PyObject *__pyx_v_self); /*proto*/
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+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":21
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+  __pyx_t_1 = __pyx_tp_new_4cdec_5_cdec_SparseVector(((PyTypeObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SparseVector)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 22; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":23
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":24
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":45
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-  /* function exit code */
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-    /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":50
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+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":57
+ *         return self
+ * 
+ *     def __add__(x, y):             # <<<<<<<<<<<<<<
+ *         cdef SufficientStats sx = as_stats(x, y)
+ *         cdef SufficientStats sy = as_stats(y, x)
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_15SufficientStats_11__add__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
   struct __pyx_obj_4cdec_5_cdec_SufficientStats *__pyx_v_sx = 0;
   struct __pyx_obj_4cdec_5_cdec_SufficientStats *__pyx_v_sy = 0;
@@ -17351,7 +16845,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_15SufficientStats_11__add__(PyObject *__p
   int __pyx_clineno = 0;
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":58
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":58
  * 
  *     def __add__(x, y):
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@@ -17363,7 +16857,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_15SufficientStats_11__add__(PyObject *__p
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   __pyx_t_1 = 0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":59
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":59
  *     def __add__(x, y):
  *         cdef SufficientStats sx = as_stats(x, y)
  *         cdef SufficientStats sy = as_stats(y, x)             # <<<<<<<<<<<<<<
@@ -17375,19 +16869,19 @@ static PyObject *__pyx_pf_4cdec_5_cdec_15SufficientStats_11__add__(PyObject *__p
   __pyx_v_sy = ((struct __pyx_obj_4cdec_5_cdec_SufficientStats *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":60
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":60
  *         cdef SufficientStats sx = as_stats(x, y)
  *         cdef SufficientStats sy = as_stats(y, x)
  *         cdef SufficientStats result = SufficientStats()             # <<<<<<<<<<<<<<
  *         result.stats = new mteval.SufficientStats(mteval.add(sx.stats[0], sy.stats[0]))
  *         result.metric = sx.metric
  */
-  __pyx_t_1 = __Pyx_PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SufficientStats)), __pyx_empty_tuple, NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 60; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SufficientStats)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 60; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_v_result = ((struct __pyx_obj_4cdec_5_cdec_SufficientStats *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":61
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":61
  *         cdef SufficientStats sy = as_stats(y, x)
  *         cdef SufficientStats result = SufficientStats()
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@@ -17396,7 +16890,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_15SufficientStats_11__add__(PyObject *__p
  */
   __pyx_v_result->stats = new SufficientStats(operator+((__pyx_v_sx->stats[0]), (__pyx_v_sy->stats[0])));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":62
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":62
  *         cdef SufficientStats result = SufficientStats()
  *         result.stats = new mteval.SufficientStats(mteval.add(sx.stats[0], sy.stats[0]))
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@@ -17406,7 +16900,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_15SufficientStats_11__add__(PyObject *__p
   __pyx_t_2 = __pyx_v_sx->metric;
   __pyx_v_result->metric = __pyx_t_2;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":63
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":63
  *         result.stats = new mteval.SufficientStats(mteval.add(sx.stats[0], sy.stats[0]))
  *         result.metric = sx.metric
  *         return result             # <<<<<<<<<<<<<<
@@ -17418,15 +16912,8 @@ static PyObject *__pyx_pf_4cdec_5_cdec_15SufficientStats_11__add__(PyObject *__p
   __pyx_r = ((PyObject *)__pyx_v_result);
   goto __pyx_L0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":57
- *         return self
- * 
- *     def __add__(x, y):             # <<<<<<<<<<<<<<
- *         cdef SufficientStats sx = as_stats(x, y)
- *         cdef SufficientStats sy = as_stats(y, x)
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
   __pyx_L1_error:;
   __Pyx_XDECREF(__pyx_t_1);
   __Pyx_AddTraceback("cdec._cdec.SufficientStats.__add__", __pyx_clineno, __pyx_lineno, __pyx_filename);
@@ -17440,14 +16927,6 @@ static PyObject *__pyx_pf_4cdec_5_cdec_15SufficientStats_11__add__(PyObject *__p
   return __pyx_r;
 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":70
- *     cdef mteval.CandidateSet* cs
- * 
- *     def __cinit__(self, SegmentEvaluator evaluator):             # <<<<<<<<<<<<<<
- *         self.scorer = new shared_ptr[mteval.SegmentEvaluator](evaluator.scorer[0])
- *         self.metric = evaluator.metric
- */
-
 /* Python wrapper */
 static int __pyx_pw_4cdec_5_cdec_12CandidateSet_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
 static int __pyx_pw_4cdec_5_cdec_12CandidateSet_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
@@ -17459,7 +16938,7 @@ static int __pyx_pw_4cdec_5_cdec_12CandidateSet_1__cinit__(PyObject *__pyx_v_sel
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   __Pyx_RefNannySetupContext("__cinit__ (wrapper)", 0);
   {
-    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s_evaluator,0};
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__evaluator,0};
     PyObject* values[1] = {0};
     if (unlikely(__pyx_kwds)) {
       Py_ssize_t kw_args;
@@ -17472,7 +16951,7 @@ static int __pyx_pw_4cdec_5_cdec_12CandidateSet_1__cinit__(PyObject *__pyx_v_sel
       kw_args = PyDict_Size(__pyx_kwds);
       switch (pos_args) {
         case  0:
-        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s_evaluator)) != 0)) kw_args--;
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__evaluator)) != 0)) kw_args--;
         else goto __pyx_L5_argtuple_error;
       }
       if (unlikely(kw_args > 0)) {
@@ -17495,8 +16974,6 @@ static int __pyx_pw_4cdec_5_cdec_12CandidateSet_1__cinit__(PyObject *__pyx_v_sel
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   if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_evaluator), __pyx_ptype_4cdec_5_cdec_SegmentEvaluator, 1, "evaluator", 0))) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 70; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_r = __pyx_pf_4cdec_5_cdec_12CandidateSet___cinit__(((struct __pyx_obj_4cdec_5_cdec_CandidateSet *)__pyx_v_self), __pyx_v_evaluator);
-
-  /* function exit code */
   goto __pyx_L0;
   __pyx_L1_error:;
   __pyx_r = -1;
@@ -17505,13 +16982,21 @@ static int __pyx_pw_4cdec_5_cdec_12CandidateSet_1__cinit__(PyObject *__pyx_v_sel
   return __pyx_r;
 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":70
+ *     cdef mteval.CandidateSet* cs
+ * 
+ *     def __cinit__(self, SegmentEvaluator evaluator):             # <<<<<<<<<<<<<<
+ *         self.scorer = new shared_ptr[mteval.SegmentEvaluator](evaluator.scorer[0])
+ *         self.metric = evaluator.metric
+ */
+
 static int __pyx_pf_4cdec_5_cdec_12CandidateSet___cinit__(struct __pyx_obj_4cdec_5_cdec_CandidateSet *__pyx_v_self, struct __pyx_obj_4cdec_5_cdec_SegmentEvaluator *__pyx_v_evaluator) {
   int __pyx_r;
   __Pyx_RefNannyDeclarations
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   __Pyx_RefNannySetupContext("__cinit__", 0);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":71
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":71
  * 
  *     def __cinit__(self, SegmentEvaluator evaluator):
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@@ -17520,7 +17005,7 @@ static int __pyx_pf_4cdec_5_cdec_12CandidateSet___cinit__(struct __pyx_obj_4cdec
  */
   __pyx_v_self->scorer = new boost::shared_ptr<SegmentEvaluator>((__pyx_v_evaluator->scorer[0]));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":72
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":72
  *     def __cinit__(self, SegmentEvaluator evaluator):
  *         self.scorer = new shared_ptr[mteval.SegmentEvaluator](evaluator.scorer[0])
  *         self.metric = evaluator.metric             # <<<<<<<<<<<<<<
@@ -17530,7 +17015,7 @@ static int __pyx_pf_4cdec_5_cdec_12CandidateSet___cinit__(struct __pyx_obj_4cdec
   __pyx_t_1 = __pyx_v_evaluator->metric;
   __pyx_v_self->metric = __pyx_t_1;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":73
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":73
  *         self.scorer = new shared_ptr[mteval.SegmentEvaluator](evaluator.scorer[0])
  *         self.metric = evaluator.metric
  *         self.cs = new mteval.CandidateSet()             # <<<<<<<<<<<<<<
@@ -17539,44 +17024,33 @@ static int __pyx_pf_4cdec_5_cdec_12CandidateSet___cinit__(struct __pyx_obj_4cdec
  */
   __pyx_v_self->cs = new training::CandidateSet();
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":70
- *     cdef mteval.CandidateSet* cs
- * 
- *     def __cinit__(self, SegmentEvaluator evaluator):             # <<<<<<<<<<<<<<
- *         self.scorer = new shared_ptr[mteval.SegmentEvaluator](evaluator.scorer[0])
- *         self.metric = evaluator.metric
- */
-
-  /* function exit code */
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-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":75
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- * 
- *     def __dealloc__(self):             # <<<<<<<<<<<<<<
- *         del self.scorer
- *         del self.cs
- */
-
 /* Python wrapper */
 static void __pyx_pw_4cdec_5_cdec_12CandidateSet_3__dealloc__(PyObject *__pyx_v_self); /*proto*/
 static void __pyx_pw_4cdec_5_cdec_12CandidateSet_3__dealloc__(PyObject *__pyx_v_self) {
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   __pyx_pf_4cdec_5_cdec_12CandidateSet_2__dealloc__(((struct __pyx_obj_4cdec_5_cdec_CandidateSet *)__pyx_v_self));
-
-  /* function exit code */
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 }
 
-static void __pyx_pf_4cdec_5_cdec_12CandidateSet_2__dealloc__(struct __pyx_obj_4cdec_5_cdec_CandidateSet *__pyx_v_self) {
+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":75
+ *         self.cs = new mteval.CandidateSet()
+ * 
+ *     def __dealloc__(self):             # <<<<<<<<<<<<<<
+ *         del self.scorer
+ *         del self.cs
+ */
+
+static void __pyx_pf_4cdec_5_cdec_12CandidateSet_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_4cdec_5_cdec_CandidateSet *__pyx_v_self) {
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__dealloc__", 0);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":76
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":76
  * 
  *     def __dealloc__(self):
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@@ -17585,7 +17059,7 @@ static void __pyx_pf_4cdec_5_cdec_12CandidateSet_2__dealloc__(struct __pyx_obj_4
  */
   delete __pyx_v_self->scorer;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":77
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":77
  *     def __dealloc__(self):
  *         del self.scorer
  *         del self.cs             # <<<<<<<<<<<<<<
@@ -17594,26 +17068,9 @@ static void __pyx_pf_4cdec_5_cdec_12CandidateSet_2__dealloc__(struct __pyx_obj_4
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   delete __pyx_v_self->cs;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":75
- *         self.cs = new mteval.CandidateSet()
- * 
- *     def __dealloc__(self):             # <<<<<<<<<<<<<<
- *         del self.scorer
- *         del self.cs
- */
-
-  /* function exit code */
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-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":79
- *         del self.cs
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- *     def __len__(self):             # <<<<<<<<<<<<<<
- *         return self.cs.size()
- * 
- */
-
 /* Python wrapper */
 static Py_ssize_t __pyx_pw_4cdec_5_cdec_12CandidateSet_5__len__(PyObject *__pyx_v_self); /*proto*/
 static Py_ssize_t __pyx_pw_4cdec_5_cdec_12CandidateSet_5__len__(PyObject *__pyx_v_self) {
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-
-  /* function exit code */
   __Pyx_RefNannyFinishContext();
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 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":79
+ *         del self.cs
+ * 
+ *     def __len__(self):             # <<<<<<<<<<<<<<
+ *         return self.cs.size()
+ * 
+ */
+
 static Py_ssize_t __pyx_pf_4cdec_5_cdec_12CandidateSet_4__len__(struct __pyx_obj_4cdec_5_cdec_CandidateSet *__pyx_v_self) {
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   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__len__", 0);
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":80
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":80
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  *     def __len__(self):
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":79
- *         del self.cs
- * 
- *     def __len__(self):             # <<<<<<<<<<<<<<
- *         return self.cs.size()
- * 
- */
-
-  /* function exit code */
+  __pyx_r = 0;
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 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":82
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- *     def __getitem__(self,int k):             # <<<<<<<<<<<<<<
- *         if not 0 <= k < self.cs.size():
- *             raise IndexError('candidate set index out of range')
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-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_12CandidateSet_7__getitem__(PyObject *__pyx_v_self, PyObject *__pyx_arg_k); /*proto*/
 static PyObject *__pyx_pw_4cdec_5_cdec_12CandidateSet_7__getitem__(PyObject *__pyx_v_self, PyObject *__pyx_arg_k) {
@@ -17675,7 +17122,7 @@ static PyObject *__pyx_pw_4cdec_5_cdec_12CandidateSet_7__getitem__(PyObject *__p
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+    __pyx_v_k = __Pyx_PyInt_AsInt(__pyx_arg_k); if (unlikely((__pyx_v_k == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 82; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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@@ -17684,12 +17131,18 @@ static PyObject *__pyx_pw_4cdec_5_cdec_12CandidateSet_7__getitem__(PyObject *__p
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-
-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":82
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+ * 
+ *     def __getitem__(self,int k):             # <<<<<<<<<<<<<<
+ *         if not 0 <= k < self.cs.size():
+ *             raise IndexError('candidate set index out of range')
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_12CandidateSet_6__getitem__(struct __pyx_obj_4cdec_5_cdec_CandidateSet *__pyx_v_self, int __pyx_v_k) {
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@@ -17702,7 +17155,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12CandidateSet_6__getitem__(struct __pyx_
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":83
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":83
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  *     def __getitem__(self,int k):
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   if (__pyx_t_2) {
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":84
+    /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":84
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-    __pyx_t_3 = __Pyx_PyObject_Call(__pyx_builtin_IndexError, __pyx_tuple__19, NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 84; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyObject_Call(__pyx_builtin_IndexError, ((PyObject *)__pyx_k_tuple_45), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 84; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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     {__pyx_filename = __pyx_f[5]; __pyx_lineno = 84; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    goto __pyx_L3;
   }
+  __pyx_L3:;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":85
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":85
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  *         candidate.score = self.metric.ComputeScore(self.cs[0][k].eval_feats)
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-  __pyx_t_3 = __Pyx_PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_Candidate)), __pyx_empty_tuple, NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 85; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_Candidate)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 85; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_t_3 = 0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":86
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":86
  *             raise IndexError('candidate set index out of range')
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  *         candidate.candidate = &self.cs[0][k]             # <<<<<<<<<<<<<<
@@ -17751,7 +17206,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12CandidateSet_6__getitem__(struct __pyx_
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":87
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":87
  *         cdef Candidate candidate = Candidate()
  *         candidate.candidate = &self.cs[0][k]
  *         candidate.score = self.metric.ComputeScore(self.cs[0][k].eval_feats)             # <<<<<<<<<<<<<<
@@ -17760,7 +17215,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12CandidateSet_6__getitem__(struct __pyx_
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":88
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":88
  *         candidate.candidate = &self.cs[0][k]
  *         candidate.score = self.metric.ComputeScore(self.cs[0][k].eval_feats)
  *         return candidate             # <<<<<<<<<<<<<<
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":82
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- * 
- *     def __getitem__(self,int k):             # <<<<<<<<<<<<<<
- *         if not 0 <= k < self.cs.size():
- *             raise IndexError('candidate set index out of range')
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
   __pyx_L1_error:;
   __Pyx_XDECREF(__pyx_t_3);
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-
-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":90
- *         return candidate
- * 
- *     def __iter__(self):             # <<<<<<<<<<<<<<
- *         cdef unsigned i
- *         for i in range(len(self)):
- */
+static PyObject *__pyx_gb_4cdec_5_cdec_12CandidateSet_10generator19(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
 
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_12CandidateSet_9__iter__(PyObject *__pyx_v_self); /*proto*/
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-
-  /* function exit code */
   __Pyx_RefNannyFinishContext();
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 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":90
+ *         return candidate
+ * 
+ *     def __iter__(self):             # <<<<<<<<<<<<<<
+ *         cdef unsigned i
+ *         for i in range(len(self)):
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_12CandidateSet_8__iter__(struct __pyx_obj_4cdec_5_cdec_CandidateSet *__pyx_v_self) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__ *__pyx_cur_scope;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__ *__pyx_cur_scope;
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-  __pyx_cur_scope = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__ *)__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_22___iter__(__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_22___iter__, __pyx_empty_tuple, NULL);
+  __pyx_cur_scope = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__ *)__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_25___iter__(__pyx_ptype_4cdec_5_cdec___pyx_scope_struct_25___iter__, __pyx_empty_tuple, NULL);
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+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_4cdec_5_cdec_12CandidateSet_10generator19, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 90; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -17851,9 +17296,9 @@ static PyObject *__pyx_pf_4cdec_5_cdec_12CandidateSet_8__iter__(struct __pyx_obj
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 }
 
-static PyObject *__pyx_gb_4cdec_5_cdec_12CandidateSet_10generator16(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
+static PyObject *__pyx_gb_4cdec_5_cdec_12CandidateSet_10generator19(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
 {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__ *__pyx_cur_scope = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__ *)__pyx_generator->closure);
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__ *__pyx_cur_scope = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__ *)__pyx_generator->closure);
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   unsigned int __pyx_t_2;
@@ -17873,7 +17318,7 @@ static PyObject *__pyx_gb_4cdec_5_cdec_12CandidateSet_10generator16(__pyx_Genera
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":92
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":92
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@@ -17884,14 +17329,14 @@ static PyObject *__pyx_gb_4cdec_5_cdec_12CandidateSet_10generator16(__pyx_Genera
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     __pyx_cur_scope->__pyx_v_i = __pyx_t_2;
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":93
+    /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":93
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  *         for i in range(len(self)):
  *             yield self[i]             # <<<<<<<<<<<<<<
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-    __pyx_t_3 = __Pyx_GetItemInt(((PyObject *)__pyx_cur_scope->__pyx_v_self), __pyx_cur_scope->__pyx_v_i, unsigned int, 0, __Pyx_PyInt_From_unsigned_int, 0, 0, 1); if (unlikely(__pyx_t_3 == NULL)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 93; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+    __pyx_t_3 = __Pyx_GetItemInt(((PyObject *)__pyx_cur_scope->__pyx_v_self), __pyx_cur_scope->__pyx_v_i, sizeof(unsigned int)+1, PyLong_FromUnsignedLong, 0, 0, 1); if (!__pyx_t_3) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 93; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -17907,16 +17352,6 @@ static PyObject *__pyx_gb_4cdec_5_cdec_12CandidateSet_10generator16(__pyx_Genera
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-
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":90
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- *         cdef unsigned i
- *         for i in range(len(self)):
- */
-
-  /* function exit code */
   PyErr_SetNone(PyExc_StopIteration);
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   __pyx_L1_error:;
@@ -17930,14 +17365,6 @@ static PyObject *__pyx_gb_4cdec_5_cdec_12CandidateSet_10generator16(__pyx_Genera
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 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":95
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- * 
- *     def add_kbest(self, Hypergraph hypergraph, unsigned k):             # <<<<<<<<<<<<<<
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- */
-
 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_12CandidateSet_12add_kbest(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
 static char __pyx_doc_4cdec_5_cdec_12CandidateSet_11add_kbest[] = "cs.add_kbest(Hypergraph hypergraph, int k) -> Extract K-best hypotheses \n        from the hypergraph and add them to the candidate set.";
@@ -17951,7 +17378,7 @@ static PyObject *__pyx_pw_4cdec_5_cdec_12CandidateSet_12add_kbest(PyObject *__py
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-    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s_hypergraph,&__pyx_n_s_k,0};
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__hypergraph,&__pyx_n_s__k,0};
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       switch (pos_args) {
         case  0:
-        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s_hypergraph)) != 0)) kw_args--;
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__hypergraph)) != 0)) kw_args--;
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         case  1:
-        if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s_k)) != 0)) kw_args--;
+        if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__k)) != 0)) kw_args--;
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+    __pyx_v_k = __Pyx_PyInt_AsUnsignedInt(values[1]); if (unlikely((__pyx_v_k == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 95; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-  /* function exit code */
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@@ -18005,12 +17430,20 @@ static PyObject *__pyx_pw_4cdec_5_cdec_12CandidateSet_12add_kbest(PyObject *__py
   return __pyx_r;
 }
 
+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":95
+ *             yield self[i]
+ * 
+ *     def add_kbest(self, Hypergraph hypergraph, unsigned k):             # <<<<<<<<<<<<<<
+ *         """cs.add_kbest(Hypergraph hypergraph, int k) -> Extract K-best hypotheses
+ *         from the hypergraph and add them to the candidate set."""
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_12CandidateSet_11add_kbest(struct __pyx_obj_4cdec_5_cdec_CandidateSet *__pyx_v_self, struct __pyx_obj_4cdec_5_cdec_Hypergraph *__pyx_v_hypergraph, unsigned int __pyx_v_k) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":98
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":95
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- *     def add_kbest(self, Hypergraph hypergraph, unsigned k):             # <<<<<<<<<<<<<<
- *         """cs.add_kbest(Hypergraph hypergraph, int k) -> Extract K-best hypotheses
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-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":104
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- *     def __dealloc__(self):             # <<<<<<<<<<<<<<
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- * 
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-
 /* Python wrapper */
 static void __pyx_pw_4cdec_5_cdec_16SegmentEvaluator_1__dealloc__(PyObject *__pyx_v_self); /*proto*/
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 }
 
-static void __pyx_pf_4cdec_5_cdec_16SegmentEvaluator___dealloc__(struct __pyx_obj_4cdec_5_cdec_SegmentEvaluator *__pyx_v_self) {
+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":104
+ *     cdef mteval.EvaluationMetric* metric
+ * 
+ *     def __dealloc__(self):             # <<<<<<<<<<<<<<
+ *         del self.scorer
+ * 
+ */
+
+static void __pyx_pf_4cdec_5_cdec_16SegmentEvaluator___dealloc__(CYTHON_UNUSED struct __pyx_obj_4cdec_5_cdec_SegmentEvaluator *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":105
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  *     def __dealloc__(self):
  *         del self.scorer             # <<<<<<<<<<<<<<
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":104
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 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_16SegmentEvaluator_3evaluate(PyObject *__pyx_v_self, PyObject *__pyx_v_sentence); /*proto*/
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+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":107
+ *         del self.scorer
+ * 
+ *     def evaluate(self, sentence):             # <<<<<<<<<<<<<<
+ *         """se.evaluate(sentence) -> SufficientStats for the given hypothesis."""
+ *         cdef vector[WordID] hyp
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_16SegmentEvaluator_2evaluate(struct __pyx_obj_4cdec_5_cdec_SegmentEvaluator *__pyx_v_self, PyObject *__pyx_v_sentence) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":110
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":110
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+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_SufficientStats)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":111
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":111
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@@ -18136,7 +17547,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_16SegmentEvaluator_2evaluate(struct __pyx
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":112
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":112
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@@ -18145,26 +17556,26 @@ static PyObject *__pyx_pf_4cdec_5_cdec_16SegmentEvaluator_2evaluate(struct __pyx
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":113
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":113
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  *         sf.stats = new mteval.SufficientStats()
  *         ConvertSentence(as_str(sentence.strip()), &hyp)             # <<<<<<<<<<<<<<
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+  __pyx_t_1 = __Pyx_PyObject_GetAttrStr(__pyx_v_sentence, __pyx_n_s__strip); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_3 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_1 = ((PyObject *)__pyx_f_4cdec_5_cdec_as_str(__pyx_t_3, NULL)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":114
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":114
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":115
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":115
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":107
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- *         """se.evaluate(sentence) -> SufficientStats for the given hypothesis."""
- *         cdef vector[WordID] hyp
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
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@@ -18206,14 +17610,6 @@ static PyObject *__pyx_pf_4cdec_5_cdec_16SegmentEvaluator_2evaluate(struct __pyx
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 }
 
-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":117
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 /* Python wrapper */
 static PyObject *__pyx_pw_4cdec_5_cdec_16SegmentEvaluator_5candidate_set(PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *unused); /*proto*/
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-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":117
+ *         return sf
+ * 
+ *     def candidate_set(self):             # <<<<<<<<<<<<<<
+ *         """se.candidate_set() -> Candidate set using this segment evaluator for scoring."""
+ *         return CandidateSet(self)
+ */
+
 static PyObject *__pyx_pf_4cdec_5_cdec_16SegmentEvaluator_4candidate_set(struct __pyx_obj_4cdec_5_cdec_SegmentEvaluator *__pyx_v_self) {
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@@ -18238,7 +17640,7 @@ static PyObject *__pyx_pf_4cdec_5_cdec_16SegmentEvaluator_4candidate_set(struct
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":119
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":119
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+  __pyx_t_2 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_CandidateSet)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":117
- *         return sf
- * 
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- *         """se.candidate_set() -> Candidate set using this segment evaluator for scoring."""
- *         return CandidateSet(self)
- */
-
-  /* function exit code */
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
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-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":125
- *     cdef mteval.EvaluationMetric* metric
- * 
- *     def __cinit__(self, bytes name=None):             # <<<<<<<<<<<<<<
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 /* Python wrapper */
 static int __pyx_pw_4cdec_5_cdec_6Scorer_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
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-    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s_name,0};
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     PyObject* values[1] = {0};
+
+    /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":125
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       switch (pos_args) {
         case  0:
         if (kw_args > 0) {
-          PyObject* value = PyDict_GetItem(__pyx_kwds, __pyx_n_s_name);
+          PyObject* value = PyDict_GetItem(__pyx_kwds, __pyx_n_s__name);
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-  /* function exit code */
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":126
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-  __pyx_t_1 = (__pyx_v_name != Py_None) && (PyBytes_GET_SIZE(__pyx_v_name) != 0);
+  __pyx_t_1 = (((PyObject *)__pyx_v_name) != Py_None) && (PyBytes_GET_SIZE(((PyObject *)__pyx_v_name)) != 0);
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-    /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":127
+    /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":127
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+    __pyx_t_2 = __Pyx_PyObject_AsString(((PyObject *)__pyx_v_name)); if (unlikely((!__pyx_t_2) && PyErr_Occurred())) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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     }
     __pyx_v_self->name = __pyx_t_3;
 
-    /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":128
+    /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":128
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":125
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-
-  /* function exit code */
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-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":130
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 /* Python wrapper */
 static void __pyx_pw_4cdec_5_cdec_6Scorer_3__dealloc__(PyObject *__pyx_v_self); /*proto*/
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 }
 
-static void __pyx_pf_4cdec_5_cdec_6Scorer_2__dealloc__(struct __pyx_obj_4cdec_5_cdec_Scorer *__pyx_v_self) {
+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":130
+ *             self.metric = mteval.MetricInstance(self.name[0])
+ * 
+ *     def __dealloc__(self):             # <<<<<<<<<<<<<<
+ *         del self.name
+ * 
+ */
+
+static void __pyx_pf_4cdec_5_cdec_6Scorer_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_4cdec_5_cdec_Scorer *__pyx_v_self) {
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":131
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":130
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+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":133
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":134
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-    /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":135
+    /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":135
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":136
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":136
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":138
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":138
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-    /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":139
+    /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":139
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-    /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":140
+    /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":140
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-    /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":141
+    /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":141
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-    /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":142
+    /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":142
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":144
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":145
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":145
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":146
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":146
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":148
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":148
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":149
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":149
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":133
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-  /* function exit code */
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+/* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":151
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+ * 
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+ * 
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+
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":152
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-/* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":154
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":156
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":156
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-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":158
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-    /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":159
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+
+    /* "cdec/_cdec.pyx":47
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-          PyObject* value = PyDict_GetItem(__pyx_kwds, __pyx_n_s_config_str);
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+    goto __pyx_L6;
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-  /* function exit code */
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+
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_24___iter__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___iter__ *)o;
+  PyObject_GC_UnTrack(o);
+  Py_CLEAR(p->__pyx_v_i);
+  Py_CLEAR(p->__pyx_v_self);
+  Py_CLEAR(p->__pyx_t_1);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_24___iter__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___iter__))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_24___iter__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_24___iter__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___iter__ *)o);
   } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
+    (*Py_TYPE(o)->tp_free)(o);
+  }
+}
+
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_24___iter__(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___iter__ *)o;
+  if (p->__pyx_v_i) {
+    e = (*v)(p->__pyx_v_i, a); if (e) return e;
   }
+  if (p->__pyx_v_self) {
+    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
+  }
+  if (p->__pyx_t_1) {
+    e = (*v)(p->__pyx_t_1, a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_24___iter__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___iter__ *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_i);
+  p->__pyx_v_i = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_SufficientStats *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_t_1);
+  p->__pyx_t_1 = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_24___iter__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_24___iter__ = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_24___iter__"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___iter__), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_24___iter__, /*tp_dealloc*/
+  0, /*tp_print*/
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*tp_repr*/
+  0, /*tp_as_number*/
+  0, /*tp_as_sequence*/
+  0, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  0, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  0, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  0, /*tp_doc*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_24___iter__, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_24___iter__, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_24___iter__, /*tp_methods*/
+  0, /*tp_members*/
+  0, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  0, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_24___iter__, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*tp_version_tag*/
+  #endif
+};
+
+static PyObject *__pyx_tp_new_4cdec_5_cdec_TRule(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  PyObject *o;
+  o = (*t->tp_alloc)(t, 0);
   if (unlikely(!o)) return 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec_DenseVector(PyObject *o) {
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && (!PyType_IS_GC(Py_TYPE(o)) || !_PyGC_FINALIZED(o))) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
+static void __pyx_tp_dealloc_4cdec_5_cdec_TRule(PyObject *o) {
+  {
+    PyObject *etype, *eval, *etb;
+    PyErr_Fetch(&etype, &eval, &etb);
+    ++Py_REFCNT(o);
+    __pyx_pw_4cdec_5_cdec_5TRule_3__dealloc__(o);
+    if (PyErr_Occurred()) PyErr_WriteUnraisable(o);
+    --Py_REFCNT(o);
+    PyErr_Restore(etype, eval, etb);
   }
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_5TRule_arity(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_5TRule_5arity_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_5TRule_f(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_5TRule_1f_1__get__(o);
+}
+
+static int __pyx_setprop_4cdec_5_cdec_5TRule_f(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_4cdec_5_cdec_5TRule_1f_3__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_5TRule_e(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_5TRule_1e_1__get__(o);
+}
+
+static int __pyx_setprop_4cdec_5_cdec_5TRule_e(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_4cdec_5_cdec_5TRule_1e_3__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_5TRule_a(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_5TRule_1a_1__get__(o);
+}
+
+static int __pyx_setprop_4cdec_5_cdec_5TRule_a(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_4cdec_5_cdec_5TRule_1a_4__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_5TRule_scores(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_5TRule_6scores_1__get__(o);
+}
+
+static int __pyx_setprop_4cdec_5_cdec_5TRule_scores(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_4cdec_5_cdec_5TRule_6scores_3__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_5TRule_lhs(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_5TRule_3lhs_1__get__(o);
+}
+
+static int __pyx_setprop_4cdec_5_cdec_5TRule_lhs(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_4cdec_5_cdec_5TRule_3lhs_3__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
+}
+
+static PyMethodDef __pyx_methods_4cdec_5_cdec_TRule[] = {
+  {0, 0, 0, 0}
+};
+
+static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_TRule[] = {
+  {(char *)"arity", __pyx_getprop_4cdec_5_cdec_5TRule_arity, 0, 0, 0},
+  {(char *)"f", __pyx_getprop_4cdec_5_cdec_5TRule_f, __pyx_setprop_4cdec_5_cdec_5TRule_f, 0, 0},
+  {(char *)"e", __pyx_getprop_4cdec_5_cdec_5TRule_e, __pyx_setprop_4cdec_5_cdec_5TRule_e, 0, 0},
+  {(char *)"a", __pyx_getprop_4cdec_5_cdec_5TRule_a, __pyx_setprop_4cdec_5_cdec_5TRule_a, 0, 0},
+  {(char *)"scores", __pyx_getprop_4cdec_5_cdec_5TRule_scores, __pyx_setprop_4cdec_5_cdec_5TRule_scores, 0, 0},
+  {(char *)"lhs", __pyx_getprop_4cdec_5_cdec_5TRule_lhs, __pyx_setprop_4cdec_5_cdec_5TRule_lhs, 0, 0},
+  {0, 0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec_TRule = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("cdec._cdec.TRule"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_TRule), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_4cdec_5_cdec_TRule, /*tp_dealloc*/
+  0, /*tp_print*/
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*tp_repr*/
+  0, /*tp_as_number*/
+  0, /*tp_as_sequence*/
+  0, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  __pyx_pw_4cdec_5_cdec_5TRule_5__str__, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  0, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  0, /*tp_doc*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_4cdec_5_cdec_TRule, /*tp_methods*/
+  0, /*tp_members*/
+  __pyx_getsets_4cdec_5_cdec_TRule, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  __pyx_pw_4cdec_5_cdec_5TRule_1__init__, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_4cdec_5_cdec_TRule, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*tp_version_tag*/
+  #endif
+};
+
+static PyObject *__pyx_tp_new_4cdec_5_cdec_MRule(PyTypeObject *t, PyObject *a, PyObject *k) {
+  PyObject *o = __pyx_tp_new_4cdec_5_cdec_TRule(t, a, k);
+  if (unlikely(!o)) return 0;
+  return o;
+}
+
+static PyMethodDef __pyx_methods_4cdec_5_cdec_MRule[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec_MRule = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("cdec._cdec.MRule"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_MRule), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_4cdec_5_cdec_TRule, /*tp_dealloc*/
+  0, /*tp_print*/
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*tp_repr*/
+  0, /*tp_as_number*/
+  0, /*tp_as_sequence*/
+  0, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  #if CYTHON_COMPILING_IN_PYPY
+  __pyx_pw_4cdec_5_cdec_5TRule_5__str__, /*tp_str*/
+  #else
+  0, /*tp_str*/
+  #endif
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  0, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  0, /*tp_doc*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_4cdec_5_cdec_MRule, /*tp_methods*/
+  0, /*tp_members*/
+  0, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  __pyx_pw_4cdec_5_cdec_5MRule_1__init__, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_4cdec_5_cdec_MRule, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*tp_version_tag*/
   #endif
+};
+
+static PyObject *__pyx_tp_new_4cdec_5_cdec_DenseVector(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  PyObject *o;
+  o = (*t->tp_alloc)(t, 0);
+  if (unlikely(!o)) return 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_4cdec_5_cdec_DenseVector(PyObject *o) {
   {
     PyObject *etype, *eval, *etb;
     PyErr_Fetch(&etype, &eval, &etb);
     ++Py_REFCNT(o);
     __pyx_pw_4cdec_5_cdec_11DenseVector_3__dealloc__(o);
+    if (PyErr_Occurred()) PyErr_WriteUnraisable(o);
     --Py_REFCNT(o);
     PyErr_Restore(etype, eval, etb);
   }
@@ -21857,7 +21437,7 @@ static int __pyx_mp_ass_subscript_4cdec_5_cdec_DenseVector(PyObject *o, PyObject
   }
   else {
     PyErr_Format(PyExc_NotImplementedError,
-      "Subscript deletion not supported by %.200s", Py_TYPE(o)->tp_name);
+      "Subscript deletion not supported by %s", Py_TYPE(o)->tp_name);
     return -1;
   }
 }
@@ -21941,39 +21521,28 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_DenseVector = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_SparseVector(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec_SufficientStats(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o;
-  if (likely((t->tp_flags & Py_TPFLAGS_IS_ABSTRACT) == 0)) {
-    o = (*t->tp_alloc)(t, 0);
-  } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
-  }
+  o = (*t->tp_alloc)(t, 0);
   if (unlikely(!o)) return 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec_SparseVector(PyObject *o) {
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && (!PyType_IS_GC(Py_TYPE(o)) || !_PyGC_FINALIZED(o))) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
-  }
-  #endif
+static void __pyx_tp_dealloc_4cdec_5_cdec_SufficientStats(PyObject *o) {
   {
     PyObject *etype, *eval, *etb;
     PyErr_Fetch(&etype, &eval, &etb);
     ++Py_REFCNT(o);
-    __pyx_pw_4cdec_5_cdec_12SparseVector_3__dealloc__(o);
+    __pyx_pw_4cdec_5_cdec_15SufficientStats_1__dealloc__(o);
+    if (PyErr_Occurred()) PyErr_WriteUnraisable(o);
     --Py_REFCNT(o);
     PyErr_Restore(etype, eval, etb);
   }
   (*Py_TYPE(o)->tp_free)(o);
 }
-static PyObject *__pyx_sq_item_4cdec_5_cdec_SparseVector(PyObject *o, Py_ssize_t i) {
+static PyObject *__pyx_sq_item_4cdec_5_cdec_SufficientStats(PyObject *o, Py_ssize_t i) {
   PyObject *r;
   PyObject *x = PyInt_FromSsize_t(i); if(!x) return 0;
   r = Py_TYPE(o)->tp_as_mapping->mp_subscript(o, x);
@@ -21981,34 +21550,35 @@ static PyObject *__pyx_sq_item_4cdec_5_cdec_SparseVector(PyObject *o, Py_ssize_t
   return r;
 }
 
-static int __pyx_mp_ass_subscript_4cdec_5_cdec_SparseVector(PyObject *o, PyObject *i, PyObject *v) {
-  if (v) {
-    return __pyx_pw_4cdec_5_cdec_12SparseVector_9__setitem__(o, i, v);
-  }
-  else {
-    PyErr_Format(PyExc_NotImplementedError,
-      "Subscript deletion not supported by %.200s", Py_TYPE(o)->tp_name);
-    return -1;
-  }
+static PyObject *__pyx_getprop_4cdec_5_cdec_15SufficientStats_score(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_15SufficientStats_5score_1__get__(o);
 }
 
-static PyMethodDef __pyx_methods_4cdec_5_cdec_SparseVector[] = {
-  {__Pyx_NAMESTR("copy"), (PyCFunction)__pyx_pw_4cdec_5_cdec_12SparseVector_5copy, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_12SparseVector_4copy)},
-  {__Pyx_NAMESTR("dot"), (PyCFunction)__pyx_pw_4cdec_5_cdec_12SparseVector_14dot, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_12SparseVector_13dot)},
+static PyObject *__pyx_getprop_4cdec_5_cdec_15SufficientStats_detail(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_15SufficientStats_6detail_1__get__(o);
+}
+
+static PyMethodDef __pyx_methods_4cdec_5_cdec_SufficientStats[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number_SparseVector = {
-  __pyx_pw_4cdec_5_cdec_12SparseVector_32__add__, /*nb_add*/
-  __pyx_pw_4cdec_5_cdec_12SparseVector_34__sub__, /*nb_subtract*/
-  __pyx_pw_4cdec_5_cdec_12SparseVector_36__mul__, /*nb_multiply*/
+static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_SufficientStats[] = {
+  {(char *)"score", __pyx_getprop_4cdec_5_cdec_15SufficientStats_score, 0, 0, 0},
+  {(char *)"detail", __pyx_getprop_4cdec_5_cdec_15SufficientStats_detail, 0, 0, 0},
+  {0, 0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number_SufficientStats = {
+  __pyx_pw_4cdec_5_cdec_15SufficientStats_12__add__, /*nb_add*/
+  0, /*nb_subtract*/
+  0, /*nb_multiply*/
   #if PY_MAJOR_VERSION < 3
-  __pyx_pw_4cdec_5_cdec_12SparseVector_38__div__, /*nb_divide*/
+  0, /*nb_divide*/
   #endif
   0, /*nb_remainder*/
   0, /*nb_divmod*/
   0, /*nb_power*/
-  __pyx_pw_4cdec_5_cdec_12SparseVector_22__neg__, /*nb_negative*/
+  0, /*nb_negative*/
   0, /*nb_positive*/
   0, /*nb_absolute*/
   0, /*nb_nonzero*/
@@ -22034,11 +21604,11 @@ static PyNumberMethods __pyx_tp_as_number_SparseVector = {
   #if PY_MAJOR_VERSION < 3
   0, /*nb_hex*/
   #endif
-  __pyx_pw_4cdec_5_cdec_12SparseVector_24__iadd__, /*nb_inplace_add*/
-  __pyx_pw_4cdec_5_cdec_12SparseVector_26__isub__, /*nb_inplace_subtract*/
-  __pyx_pw_4cdec_5_cdec_12SparseVector_28__imul__, /*nb_inplace_multiply*/
+  __pyx_pw_4cdec_5_cdec_15SufficientStats_10__iadd__, /*nb_inplace_add*/
+  0, /*nb_inplace_subtract*/
+  0, /*nb_inplace_multiply*/
   #if PY_MAJOR_VERSION < 3
-  __pyx_pw_4cdec_5_cdec_12SparseVector_30__idiv__, /*nb_inplace_divide*/
+  0, /*nb_inplace_divide*/
   #endif
   0, /*nb_inplace_remainder*/
   0, /*nb_inplace_power*/
@@ -22056,31 +21626,31 @@ static PyNumberMethods __pyx_tp_as_number_SparseVector = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence_SparseVector = {
-  __pyx_pw_4cdec_5_cdec_12SparseVector_18__len__, /*sq_length*/
+static PySequenceMethods __pyx_tp_as_sequence_SufficientStats = {
+  __pyx_pw_4cdec_5_cdec_15SufficientStats_3__len__, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
-  __pyx_sq_item_4cdec_5_cdec_SparseVector, /*sq_item*/
+  __pyx_sq_item_4cdec_5_cdec_SufficientStats, /*sq_item*/
   0, /*sq_slice*/
   0, /*sq_ass_item*/
   0, /*sq_ass_slice*/
-  __pyx_pw_4cdec_5_cdec_12SparseVector_20__contains__, /*sq_contains*/
+  0, /*sq_contains*/
   0, /*sq_inplace_concat*/
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping_SparseVector = {
-  __pyx_pw_4cdec_5_cdec_12SparseVector_18__len__, /*mp_length*/
-  __pyx_pw_4cdec_5_cdec_12SparseVector_7__getitem__, /*mp_subscript*/
-  __pyx_mp_ass_subscript_4cdec_5_cdec_SparseVector, /*mp_ass_subscript*/
+static PyMappingMethods __pyx_tp_as_mapping_SufficientStats = {
+  __pyx_pw_4cdec_5_cdec_15SufficientStats_3__len__, /*mp_length*/
+  __pyx_pw_4cdec_5_cdec_15SufficientStats_8__getitem__, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
 };
 
-static PyTypeObject __pyx_type_4cdec_5_cdec_SparseVector = {
+static PyTypeObject __pyx_type_4cdec_5_cdec_SufficientStats = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.SparseVector"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_SparseVector), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.SufficientStats"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_SufficientStats), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_SparseVector, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec_SufficientStats, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -22090,9 +21660,9 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_SparseVector = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number_SparseVector, /*tp_as_number*/
-  &__pyx_tp_as_sequence_SparseVector, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping_SparseVector, /*tp_as_mapping*/
+  &__pyx_tp_as_number_SufficientStats, /*tp_as_number*/
+  &__pyx_tp_as_sequence_SufficientStats, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping_SufficientStats, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
@@ -22103,21 +21673,21 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_SparseVector = {
   0, /*tp_doc*/
   0, /*tp_traverse*/
   0, /*tp_clear*/
-  __pyx_pw_4cdec_5_cdec_12SparseVector_16__richcmp__, /*tp_richcompare*/
+  0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
-  __pyx_pw_4cdec_5_cdec_12SparseVector_11__iter__, /*tp_iter*/
+  __pyx_pw_4cdec_5_cdec_15SufficientStats_5__iter__, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_4cdec_5_cdec_SparseVector, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec_SufficientStats, /*tp_methods*/
   0, /*tp_members*/
-  0, /*tp_getset*/
+  __pyx_getsets_4cdec_5_cdec_SufficientStats, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
   0, /*tp_descr_set*/
   0, /*tp_dictoffset*/
-  __pyx_pw_4cdec_5_cdec_12SparseVector_1__init__, /*tp_init*/
+  0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_SparseVector, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec_SufficientStats, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -22129,79 +21699,115 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_SparseVector = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_NT(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_4cdec_5_cdec_NT *p;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23_lines *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_23_lines[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_23_lines = 0;
+
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_23_lines(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23_lines *p;
   PyObject *o;
-  if (likely((t->tp_flags & Py_TPFLAGS_IS_ABSTRACT) == 0)) {
-    o = (*t->tp_alloc)(t, 0);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_23_lines > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23_lines)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_23_lines[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_23_lines];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23_lines));
+    PyObject_INIT(o, t);
+    PyObject_GC_Track(o);
   } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
+    o = (*t->tp_alloc)(t, 0);
+    if (unlikely(!o)) return 0;
   }
-  if (unlikely(!o)) return 0;
-  p = ((struct __pyx_obj_4cdec_5_cdec_NT *)o);
-  p->cat = ((PyObject*)Py_None); Py_INCREF(Py_None);
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23_lines *)o);
+  p->__pyx_outer_scope = 0;
+  p->__pyx_v_delta = 0;
+  p->__pyx_v_i = 0;
+  p->__pyx_v_label = 0;
+  p->__pyx_v_weight = 0;
+  p->__pyx_t_1 = 0;
+  p->__pyx_t_3 = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec_NT(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec_NT *p = (struct __pyx_obj_4cdec_5_cdec_NT *)o;
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && (!PyType_IS_GC(Py_TYPE(o)) || !_PyGC_FINALIZED(o))) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_23_lines(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23_lines *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23_lines *)o;
+  PyObject_GC_UnTrack(o);
+  Py_CLEAR(p->__pyx_outer_scope);
+  Py_CLEAR(p->__pyx_v_delta);
+  Py_CLEAR(p->__pyx_v_i);
+  Py_CLEAR(p->__pyx_v_label);
+  Py_CLEAR(p->__pyx_v_weight);
+  Py_CLEAR(p->__pyx_t_1);
+  Py_CLEAR(p->__pyx_t_3);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_23_lines < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23_lines))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_23_lines[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_23_lines++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23_lines *)o);
+  } else {
+    (*Py_TYPE(o)->tp_free)(o);
   }
-  #endif
-  Py_CLEAR(p->cat);
-  (*Py_TYPE(o)->tp_free)(o);
 }
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_2NT_cat(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_2NT_3cat_1__get__(o);
-}
-
-static int __pyx_setprop_4cdec_5_cdec_2NT_cat(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
-  if (v) {
-    return __pyx_pw_4cdec_5_cdec_2NT_3cat_3__set__(o, v);
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_23_lines(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23_lines *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23_lines *)o;
+  if (p->__pyx_outer_scope) {
+    e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
   }
-  else {
-    return __pyx_pw_4cdec_5_cdec_2NT_3cat_5__del__(o);
+  if (p->__pyx_v_delta) {
+    e = (*v)(p->__pyx_v_delta, a); if (e) return e;
   }
-}
-
-static PyObject *__pyx_getprop_4cdec_5_cdec_2NT_ref(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_2NT_3ref_1__get__(o);
-}
-
-static int __pyx_setprop_4cdec_5_cdec_2NT_ref(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
-  if (v) {
-    return __pyx_pw_4cdec_5_cdec_2NT_3ref_3__set__(o, v);
+  if (p->__pyx_v_i) {
+    e = (*v)(p->__pyx_v_i, a); if (e) return e;
   }
-  else {
-    PyErr_SetString(PyExc_NotImplementedError, "__del__");
-    return -1;
+  if (p->__pyx_v_label) {
+    e = (*v)(p->__pyx_v_label, a); if (e) return e;
   }
+  if (p->__pyx_v_weight) {
+    e = (*v)(p->__pyx_v_weight, a); if (e) return e;
+  }
+  if (p->__pyx_t_1) {
+    e = (*v)(p->__pyx_t_1, a); if (e) return e;
+  }
+  if (p->__pyx_t_3) {
+    e = (*v)(p->__pyx_t_3, a); if (e) return e;
+  }
+  return 0;
 }
 
-static PyMethodDef __pyx_methods_4cdec_5_cdec_NT[] = {
-  {0, 0, 0, 0}
-};
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_23_lines(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23_lines *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23_lines *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_outer_scope);
+  p->__pyx_outer_scope = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_delta);
+  p->__pyx_v_delta = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_i);
+  p->__pyx_v_i = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_label);
+  p->__pyx_v_label = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_weight);
+  p->__pyx_v_weight = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_t_1);
+  p->__pyx_t_1 = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_t_3);
+  p->__pyx_t_3 = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
 
-static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_NT[] = {
-  {(char *)"cat", __pyx_getprop_4cdec_5_cdec_2NT_cat, __pyx_setprop_4cdec_5_cdec_2NT_cat, 0, 0},
-  {(char *)"ref", __pyx_getprop_4cdec_5_cdec_2NT_ref, __pyx_setprop_4cdec_5_cdec_2NT_ref, 0, 0},
-  {0, 0, 0, 0, 0}
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_23_lines[] = {
+  {0, 0, 0, 0}
 };
 
-static PyTypeObject __pyx_type_4cdec_5_cdec_NT = {
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_23_lines = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.NT"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_NT), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_23_lines"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23_lines), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_NT, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_23_lines, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -22216,29 +21822,29 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_NT = {
   0, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
-  __pyx_pw_4cdec_5_cdec_2NT_3__str__, /*tp_str*/
+  0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  0, /*tp_traverse*/
-  0, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_23_lines, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_23_lines, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_4cdec_5_cdec_NT, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_23_lines, /*tp_methods*/
   0, /*tp_members*/
-  __pyx_getsets_4cdec_5_cdec_NT, /*tp_getset*/
+  0, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
   0, /*tp_descr_set*/
   0, /*tp_dictoffset*/
-  __pyx_pw_4cdec_5_cdec_2NT_1__init__, /*tp_init*/
+  0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_NT, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_23_lines, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -22250,60 +21856,67 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_NT = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_NTRef(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_27___init__[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_27___init__ = 0;
+
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_27___init__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__ *p;
   PyObject *o;
-  if (likely((t->tp_flags & Py_TPFLAGS_IS_ABSTRACT) == 0)) {
-    o = (*t->tp_alloc)(t, 0);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_27___init__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_27___init__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_27___init__];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__));
+    PyObject_INIT(o, t);
+    PyObject_GC_Track(o);
   } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
+    o = (*t->tp_alloc)(t, 0);
+    if (unlikely(!o)) return 0;
   }
-  if (unlikely(!o)) return 0;
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__ *)o);
+  p->__pyx_v_config = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec_NTRef(PyObject *o) {
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && (!PyType_IS_GC(Py_TYPE(o)) || !_PyGC_FINALIZED(o))) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_27___init__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__ *)o;
+  PyObject_GC_UnTrack(o);
+  Py_CLEAR(p->__pyx_v_config);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_27___init__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_27___init__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_27___init__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__ *)o);
+  } else {
+    (*Py_TYPE(o)->tp_free)(o);
   }
-  #endif
-  (*Py_TYPE(o)->tp_free)(o);
 }
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_5NTRef_ref(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_5NTRef_3ref_1__get__(o);
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_27___init__(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__ *)o;
+  if (p->__pyx_v_config) {
+    e = (*v)(p->__pyx_v_config, a); if (e) return e;
+  }
+  return 0;
 }
 
-static int __pyx_setprop_4cdec_5_cdec_5NTRef_ref(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
-  if (v) {
-    return __pyx_pw_4cdec_5_cdec_5NTRef_3ref_3__set__(o, v);
-  }
-  else {
-    PyErr_SetString(PyExc_NotImplementedError, "__del__");
-    return -1;
-  }
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_27___init__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__ *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_config);
+  p->__pyx_v_config = ((PyObject*)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
 }
 
-static PyMethodDef __pyx_methods_4cdec_5_cdec_NTRef[] = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_27___init__[] = {
   {0, 0, 0, 0}
 };
 
-static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_NTRef[] = {
-  {(char *)"ref", __pyx_getprop_4cdec_5_cdec_5NTRef_ref, __pyx_setprop_4cdec_5_cdec_5NTRef_ref, 0, 0},
-  {0, 0, 0, 0, 0}
-};
-
-static PyTypeObject __pyx_type_4cdec_5_cdec_NTRef = {
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_27___init__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.NTRef"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_NTRef), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_27___init__"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_NTRef, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_27___init__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -22318,29 +21931,29 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_NTRef = {
   0, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
-  __pyx_pw_4cdec_5_cdec_5NTRef_3__str__, /*tp_str*/
+  0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  0, /*tp_traverse*/
-  0, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_27___init__, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_27___init__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_4cdec_5_cdec_NTRef, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_27___init__, /*tp_methods*/
   0, /*tp_members*/
-  __pyx_getsets_4cdec_5_cdec_NTRef, /*tp_getset*/
+  0, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
   0, /*tp_descr_set*/
   0, /*tp_dictoffset*/
-  __pyx_pw_4cdec_5_cdec_5NTRef_1__init__, /*tp_init*/
+  0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_NTRef, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_27___init__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -22352,133 +21965,67 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_NTRef = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_TRule(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_21___iter__[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_21___iter__ = 0;
+
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_21___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *p;
   PyObject *o;
-  if (likely((t->tp_flags & Py_TPFLAGS_IS_ABSTRACT) == 0)) {
-    o = (*t->tp_alloc)(t, 0);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_21___iter__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_21___iter__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_21___iter__];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__));
+    PyObject_INIT(o, t);
+    PyObject_GC_Track(o);
   } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
+    o = (*t->tp_alloc)(t, 0);
+    if (unlikely(!o)) return 0;
   }
-  if (unlikely(!o)) return 0;
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *)o);
+  p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec_TRule(PyObject *o) {
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && (!PyType_IS_GC(Py_TYPE(o)) || !_PyGC_FINALIZED(o))) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
-  }
-  #endif
-  {
-    PyObject *etype, *eval, *etb;
-    PyErr_Fetch(&etype, &eval, &etb);
-    ++Py_REFCNT(o);
-    __pyx_pw_4cdec_5_cdec_5TRule_3__dealloc__(o);
-    --Py_REFCNT(o);
-    PyErr_Restore(etype, eval, etb);
-  }
-  (*Py_TYPE(o)->tp_free)(o);
-}
-
-static PyObject *__pyx_getprop_4cdec_5_cdec_5TRule_arity(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_5TRule_5arity_1__get__(o);
-}
-
-static PyObject *__pyx_getprop_4cdec_5_cdec_5TRule_f(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_5TRule_1f_1__get__(o);
-}
-
-static int __pyx_setprop_4cdec_5_cdec_5TRule_f(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
-  if (v) {
-    return __pyx_pw_4cdec_5_cdec_5TRule_1f_3__set__(o, v);
-  }
-  else {
-    PyErr_SetString(PyExc_NotImplementedError, "__del__");
-    return -1;
-  }
-}
-
-static PyObject *__pyx_getprop_4cdec_5_cdec_5TRule_e(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_5TRule_1e_1__get__(o);
-}
-
-static int __pyx_setprop_4cdec_5_cdec_5TRule_e(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
-  if (v) {
-    return __pyx_pw_4cdec_5_cdec_5TRule_1e_3__set__(o, v);
-  }
-  else {
-    PyErr_SetString(PyExc_NotImplementedError, "__del__");
-    return -1;
-  }
-}
-
-static PyObject *__pyx_getprop_4cdec_5_cdec_5TRule_a(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_5TRule_1a_1__get__(o);
-}
-
-static int __pyx_setprop_4cdec_5_cdec_5TRule_a(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
-  if (v) {
-    return __pyx_pw_4cdec_5_cdec_5TRule_1a_4__set__(o, v);
-  }
-  else {
-    PyErr_SetString(PyExc_NotImplementedError, "__del__");
-    return -1;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_21___iter__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *)o;
+  PyObject_GC_UnTrack(o);
+  Py_CLEAR(p->__pyx_v_self);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_21___iter__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_21___iter__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_21___iter__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *)o);
+  } else {
+    (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_5TRule_scores(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_5TRule_6scores_1__get__(o);
-}
-
-static int __pyx_setprop_4cdec_5_cdec_5TRule_scores(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
-  if (v) {
-    return __pyx_pw_4cdec_5_cdec_5TRule_6scores_3__set__(o, v);
-  }
-  else {
-    PyErr_SetString(PyExc_NotImplementedError, "__del__");
-    return -1;
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_21___iter__(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *)o;
+  if (p->__pyx_v_self) {
+    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
+  return 0;
 }
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_5TRule_lhs(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_5TRule_3lhs_1__get__(o);
-}
-
-static int __pyx_setprop_4cdec_5_cdec_5TRule_lhs(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
-  if (v) {
-    return __pyx_pw_4cdec_5_cdec_5TRule_3lhs_3__set__(o, v);
-  }
-  else {
-    PyErr_SetString(PyExc_NotImplementedError, "__del__");
-    return -1;
-  }
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_21___iter__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Lattice *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
 }
 
-static PyMethodDef __pyx_methods_4cdec_5_cdec_TRule[] = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_21___iter__[] = {
   {0, 0, 0, 0}
 };
 
-static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_TRule[] = {
-  {(char *)"arity", __pyx_getprop_4cdec_5_cdec_5TRule_arity, 0, 0, 0},
-  {(char *)"f", __pyx_getprop_4cdec_5_cdec_5TRule_f, __pyx_setprop_4cdec_5_cdec_5TRule_f, 0, 0},
-  {(char *)"e", __pyx_getprop_4cdec_5_cdec_5TRule_e, __pyx_setprop_4cdec_5_cdec_5TRule_e, 0, 0},
-  {(char *)"a", __pyx_getprop_4cdec_5_cdec_5TRule_a, __pyx_setprop_4cdec_5_cdec_5TRule_a, 0, 0},
-  {(char *)"scores", __pyx_getprop_4cdec_5_cdec_5TRule_scores, __pyx_setprop_4cdec_5_cdec_5TRule_scores, 0, 0},
-  {(char *)"lhs", __pyx_getprop_4cdec_5_cdec_5TRule_lhs, __pyx_setprop_4cdec_5_cdec_5TRule_lhs, 0, 0},
-  {0, 0, 0, 0, 0}
-};
-
-static PyTypeObject __pyx_type_4cdec_5_cdec_TRule = {
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_21___iter__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.TRule"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_TRule), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_21___iter__"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_TRule, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_21___iter__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -22493,29 +22040,29 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_TRule = {
   0, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
-  __pyx_pw_4cdec_5_cdec_5TRule_5__str__, /*tp_str*/
+  0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  0, /*tp_traverse*/
-  0, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_21___iter__, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_21___iter__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_4cdec_5_cdec_TRule, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_21___iter__, /*tp_methods*/
   0, /*tp_members*/
-  __pyx_getsets_4cdec_5_cdec_TRule, /*tp_getset*/
+  0, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
   0, /*tp_descr_set*/
   0, /*tp_dictoffset*/
-  __pyx_pw_4cdec_5_cdec_5TRule_1__init__, /*tp_init*/
+  0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_TRule, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_21___iter__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -22527,27 +22074,58 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_TRule = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_MRule(PyTypeObject *t, PyObject *a, PyObject *k) {
-  PyObject *o = __pyx_tp_new_4cdec_5_cdec_TRule(t, a, k);
+static PyObject *__pyx_tp_new_4cdec_5_cdec_Metric(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec_Metric *p;
+  PyObject *o;
+  o = (*t->tp_alloc)(t, 0);
   if (unlikely(!o)) return 0;
+  p = ((struct __pyx_obj_4cdec_5_cdec_Metric *)o);
+  p->scorer = ((struct __pyx_obj_4cdec_5_cdec_Scorer *)Py_None); Py_INCREF(Py_None);
+  if (unlikely(__pyx_pw_4cdec_5_cdec_6Metric_1__cinit__(o, __pyx_empty_tuple, NULL) < 0)) {
+    Py_DECREF(o); o = 0;
+  }
   return o;
 }
 
-static PyMethodDef __pyx_methods_4cdec_5_cdec_MRule[] = {
+static void __pyx_tp_dealloc_4cdec_5_cdec_Metric(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec_Metric *p = (struct __pyx_obj_4cdec_5_cdec_Metric *)o;
+  PyObject_GC_UnTrack(o);
+  Py_CLEAR(p->scorer);
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_4cdec_5_cdec_Metric(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_4cdec_5_cdec_Metric *p = (struct __pyx_obj_4cdec_5_cdec_Metric *)o;
+  if (p->scorer) {
+    e = (*v)(((PyObject*)p->scorer), a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_4cdec_5_cdec_Metric(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec_Metric *p = (struct __pyx_obj_4cdec_5_cdec_Metric *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->scorer);
+  p->scorer = ((struct __pyx_obj_4cdec_5_cdec_Scorer *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_4cdec_5_cdec_Metric[] = {
+  {__Pyx_NAMESTR("score"), (PyCFunction)__pyx_pw_4cdec_5_cdec_6Metric_5score, METH_NOARGS, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("evaluate"), (PyCFunction)__pyx_pw_4cdec_5_cdec_6Metric_7evaluate, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(0)},
   {0, 0, 0, 0}
 };
 
-static PyTypeObject __pyx_type_4cdec_5_cdec_MRule = {
+static PyTypeObject __pyx_type_4cdec_5_cdec_Metric = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.MRule"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_MRule), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.Metric"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_Metric), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_TRule, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec_Metric, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -22561,24 +22139,20 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_MRule = {
   0, /*tp_as_sequence*/
   0, /*tp_as_mapping*/
   0, /*tp_hash*/
-  0, /*tp_call*/
-  #if CYTHON_COMPILING_IN_PYPY
-  __pyx_pw_4cdec_5_cdec_5TRule_5__str__, /*tp_str*/
-  #else
+  __pyx_pw_4cdec_5_cdec_6Metric_3__call__, /*tp_call*/
   0, /*tp_str*/
-  #endif
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  0, /*tp_traverse*/
-  0, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec_Metric, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec_Metric, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_4cdec_5_cdec_MRule, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec_Metric, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -22586,9 +22160,9 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_MRule = {
   0, /*tp_descr_get*/
   0, /*tp_descr_set*/
   0, /*tp_dictoffset*/
-  __pyx_pw_4cdec_5_cdec_5MRule_1__init__, /*tp_init*/
+  0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_MRule, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec_Metric, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -22600,68 +22174,75 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_MRule = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_Grammar(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest = 0;
+
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest *p;
   PyObject *o;
-  if (likely((t->tp_flags & Py_TPFLAGS_IS_ABSTRACT) == 0)) {
-    o = (*t->tp_alloc)(t, 0);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest));
+    PyObject_INIT(o, t);
+    PyObject_GC_Track(o);
   } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
+    o = (*t->tp_alloc)(t, 0);
+    if (unlikely(!o)) return 0;
   }
-  if (unlikely(!o)) return 0;
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest *)o);
+  p->__pyx_v_self = 0;
+  p->__pyx_v_size = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec_Grammar(PyObject *o) {
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && (!PyType_IS_GC(Py_TYPE(o)) || !_PyGC_FINALIZED(o))) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
-  }
-  #endif
-  {
-    PyObject *etype, *eval, *etb;
-    PyErr_Fetch(&etype, &eval, &etb);
-    ++Py_REFCNT(o);
-    __pyx_pw_4cdec_5_cdec_7Grammar_1__dealloc__(o);
-    --Py_REFCNT(o);
-    PyErr_Restore(etype, eval, etb);
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest *)o;
+  PyObject_GC_UnTrack(o);
+  Py_CLEAR(p->__pyx_v_self);
+  Py_CLEAR(p->__pyx_v_size);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest *)o);
+  } else {
+    (*Py_TYPE(o)->tp_free)(o);
   }
-  (*Py_TYPE(o)->tp_free)(o);
-}
-
-static PyObject *__pyx_getprop_4cdec_5_cdec_7Grammar_name(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_7Grammar_4name_1__get__(o);
 }
 
-static int __pyx_setprop_4cdec_5_cdec_7Grammar_name(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
-  if (v) {
-    return __pyx_pw_4cdec_5_cdec_7Grammar_4name_3__set__(o, v);
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest *)o;
+  if (p->__pyx_v_self) {
+    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
-  else {
-    PyErr_SetString(PyExc_NotImplementedError, "__del__");
-    return -1;
+  if (p->__pyx_v_size) {
+    e = (*v)(p->__pyx_v_size, a); if (e) return e;
   }
+  return 0;
 }
 
-static PyMethodDef __pyx_methods_4cdec_5_cdec_Grammar[] = {
-  {0, 0, 0, 0}
-};
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_size);
+  p->__pyx_v_size = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
 
-static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_Grammar[] = {
-  {(char *)"name", __pyx_getprop_4cdec_5_cdec_7Grammar_name, __pyx_setprop_4cdec_5_cdec_7Grammar_name, 0, 0},
-  {0, 0, 0, 0, 0}
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest[] = {
+  {0, 0, 0, 0}
 };
 
-static PyTypeObject __pyx_type_4cdec_5_cdec_Grammar = {
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.Grammar"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_Grammar), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_11_unique_kbest"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_Grammar, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -22680,17 +22261,17 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Grammar = {
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  0, /*tp_traverse*/
-  0, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
-  __pyx_pw_4cdec_5_cdec_7Grammar_3__iter__, /*tp_iter*/
+  0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_4cdec_5_cdec_Grammar, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest, /*tp_methods*/
   0, /*tp_members*/
-  __pyx_getsets_4cdec_5_cdec_Grammar, /*tp_getset*/
+  0, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
@@ -22698,7 +22279,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Grammar = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_Grammar, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -22710,27 +22291,58 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Grammar = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_TextGrammar(PyTypeObject *t, PyObject *a, PyObject *k) {
-  PyObject *o = __pyx_tp_new_4cdec_5_cdec_Grammar(t, a, k);
+static PyObject *__pyx_tp_new_4cdec_5_cdec_Candidate(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  PyObject *o;
+  o = (*t->tp_alloc)(t, 0);
   if (unlikely(!o)) return 0;
   return o;
 }
 
-static PyMethodDef __pyx_methods_4cdec_5_cdec_TextGrammar[] = {
+static void __pyx_tp_dealloc_4cdec_5_cdec_Candidate(PyObject *o) {
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_9Candidate_words(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_9Candidate_5words_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_9Candidate_fmap(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_9Candidate_4fmap_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_9Candidate_score(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_9Candidate_5score_1__get__(o);
+}
+
+static int __pyx_setprop_4cdec_5_cdec_9Candidate_score(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_4cdec_5_cdec_9Candidate_5score_3__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
+}
+
+static PyMethodDef __pyx_methods_4cdec_5_cdec_Candidate[] = {
   {0, 0, 0, 0}
 };
 
-static PyTypeObject __pyx_type_4cdec_5_cdec_TextGrammar = {
+static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_Candidate[] = {
+  {(char *)"words", __pyx_getprop_4cdec_5_cdec_9Candidate_words, 0, 0, 0},
+  {(char *)"fmap", __pyx_getprop_4cdec_5_cdec_9Candidate_fmap, 0, 0, 0},
+  {(char *)"score", __pyx_getprop_4cdec_5_cdec_9Candidate_score, __pyx_setprop_4cdec_5_cdec_9Candidate_score, 0, 0},
+  {0, 0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec_Candidate = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.TextGrammar"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_TextGrammar), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.Candidate"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_Candidate), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_Grammar, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec_Candidate, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -22755,23 +22367,19 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_TextGrammar = {
   0, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
-  #if CYTHON_COMPILING_IN_PYPY
-  __pyx_pw_4cdec_5_cdec_7Grammar_3__iter__, /*tp_iter*/
-  #else
   0, /*tp_iter*/
-  #endif
   0, /*tp_iternext*/
-  __pyx_methods_4cdec_5_cdec_TextGrammar, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec_Candidate, /*tp_methods*/
   0, /*tp_members*/
-  0, /*tp_getset*/
+  __pyx_getsets_4cdec_5_cdec_Candidate, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
   0, /*tp_descr_set*/
   0, /*tp_dictoffset*/
-  __pyx_pw_4cdec_5_cdec_11TextGrammar_1__init__, /*tp_init*/
+  0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_TextGrammar, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec_Candidate, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -22783,93 +22391,135 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_TextGrammar = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
-static struct __pyx_vtabstruct_4cdec_5_cdec_Hypergraph __pyx_vtable_4cdec_5_cdec_Hypergraph;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_Hypergraph(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_4cdec_5_cdec_Hypergraph *p;
+static PyObject *__pyx_tp_new_4cdec_5_cdec_SparseVector(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o;
-  if (likely((t->tp_flags & Py_TPFLAGS_IS_ABSTRACT) == 0)) {
-    o = (*t->tp_alloc)(t, 0);
-  } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
-  }
+  o = (*t->tp_alloc)(t, 0);
   if (unlikely(!o)) return 0;
-  p = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)o);
-  p->__pyx_vtab = __pyx_vtabptr_4cdec_5_cdec_Hypergraph;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec_Hypergraph(PyObject *o) {
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && (!PyType_IS_GC(Py_TYPE(o)) || !_PyGC_FINALIZED(o))) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
-  }
-  #endif
+static void __pyx_tp_dealloc_4cdec_5_cdec_SparseVector(PyObject *o) {
   {
     PyObject *etype, *eval, *etb;
     PyErr_Fetch(&etype, &eval, &etb);
     ++Py_REFCNT(o);
-    __pyx_pw_4cdec_5_cdec_10Hypergraph_1__dealloc__(o);
+    __pyx_pw_4cdec_5_cdec_12SparseVector_3__dealloc__(o);
+    if (PyErr_Occurred()) PyErr_WriteUnraisable(o);
     --Py_REFCNT(o);
     PyErr_Restore(etype, eval, etb);
   }
   (*Py_TYPE(o)->tp_free)(o);
 }
-
-static PyObject *__pyx_getprop_4cdec_5_cdec_10Hypergraph_edges(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_10Hypergraph_5edges_1__get__(o);
+static PyObject *__pyx_sq_item_4cdec_5_cdec_SparseVector(PyObject *o, Py_ssize_t i) {
+  PyObject *r;
+  PyObject *x = PyInt_FromSsize_t(i); if(!x) return 0;
+  r = Py_TYPE(o)->tp_as_mapping->mp_subscript(o, x);
+  Py_DECREF(x);
+  return r;
 }
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_10Hypergraph_nodes(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_10Hypergraph_5nodes_1__get__(o);
+static int __pyx_mp_ass_subscript_4cdec_5_cdec_SparseVector(PyObject *o, PyObject *i, PyObject *v) {
+  if (v) {
+    return __pyx_pw_4cdec_5_cdec_12SparseVector_9__setitem__(o, i, v);
+  }
+  else {
+    PyErr_Format(PyExc_NotImplementedError,
+      "Subscript deletion not supported by %s", Py_TYPE(o)->tp_name);
+    return -1;
+  }
 }
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_10Hypergraph_goal(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_10Hypergraph_4goal_1__get__(o);
-}
+static PyMethodDef __pyx_methods_4cdec_5_cdec_SparseVector[] = {
+  {__Pyx_NAMESTR("copy"), (PyCFunction)__pyx_pw_4cdec_5_cdec_12SparseVector_5copy, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_12SparseVector_4copy)},
+  {__Pyx_NAMESTR("dot"), (PyCFunction)__pyx_pw_4cdec_5_cdec_12SparseVector_14dot, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_12SparseVector_13dot)},
+  {0, 0, 0, 0}
+};
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_10Hypergraph_npaths(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_10Hypergraph_6npaths_1__get__(o);
-}
+static PyNumberMethods __pyx_tp_as_number_SparseVector = {
+  __pyx_pw_4cdec_5_cdec_12SparseVector_32__add__, /*nb_add*/
+  __pyx_pw_4cdec_5_cdec_12SparseVector_34__sub__, /*nb_subtract*/
+  __pyx_pw_4cdec_5_cdec_12SparseVector_36__mul__, /*nb_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  __pyx_pw_4cdec_5_cdec_12SparseVector_38__div__, /*nb_divide*/
+  #endif
+  0, /*nb_remainder*/
+  0, /*nb_divmod*/
+  0, /*nb_power*/
+  __pyx_pw_4cdec_5_cdec_12SparseVector_22__neg__, /*nb_negative*/
+  0, /*nb_positive*/
+  0, /*nb_absolute*/
+  0, /*nb_nonzero*/
+  0, /*nb_invert*/
+  0, /*nb_lshift*/
+  0, /*nb_rshift*/
+  0, /*nb_and*/
+  0, /*nb_xor*/
+  0, /*nb_or*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_coerce*/
+  #endif
+  0, /*nb_int*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_long*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*nb_float*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_oct*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_hex*/
+  #endif
+  __pyx_pw_4cdec_5_cdec_12SparseVector_24__iadd__, /*nb_inplace_add*/
+  __pyx_pw_4cdec_5_cdec_12SparseVector_26__isub__, /*nb_inplace_subtract*/
+  __pyx_pw_4cdec_5_cdec_12SparseVector_28__imul__, /*nb_inplace_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  __pyx_pw_4cdec_5_cdec_12SparseVector_30__idiv__, /*nb_inplace_divide*/
+  #endif
+  0, /*nb_inplace_remainder*/
+  0, /*nb_inplace_power*/
+  0, /*nb_inplace_lshift*/
+  0, /*nb_inplace_rshift*/
+  0, /*nb_inplace_and*/
+  0, /*nb_inplace_xor*/
+  0, /*nb_inplace_or*/
+  0, /*nb_floor_divide*/
+  0, /*nb_true_divide*/
+  0, /*nb_inplace_floor_divide*/
+  0, /*nb_inplace_true_divide*/
+  #if PY_VERSION_HEX >= 0x02050000
+  0, /*nb_index*/
+  #endif
+};
 
-static PyMethodDef __pyx_methods_4cdec_5_cdec_Hypergraph[] = {
-  {__Pyx_NAMESTR("viterbi"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_3viterbi, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_2viterbi)},
-  {__Pyx_NAMESTR("viterbi_trees"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_5viterbi_trees, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_4viterbi_trees)},
-  {__Pyx_NAMESTR("viterbi_features"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_7viterbi_features, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_6viterbi_features)},
-  {__Pyx_NAMESTR("viterbi_forest"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_9viterbi_forest, METH_NOARGS, __Pyx_DOCSTR(0)},
-  {__Pyx_NAMESTR("viterbi_joshua"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_11viterbi_joshua, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_10viterbi_joshua)},
-  {__Pyx_NAMESTR("kbest"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_13kbest, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_12kbest)},
-  {__Pyx_NAMESTR("kbest_trees"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_16kbest_trees, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_15kbest_trees)},
-  {__Pyx_NAMESTR("kbest_features"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_19kbest_features, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_18kbest_features)},
-  {__Pyx_NAMESTR("sample"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_22sample, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_21sample)},
-  {__Pyx_NAMESTR("sample_trees"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_25sample_trees, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_24sample_trees)},
-  {__Pyx_NAMESTR("intersect"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_28intersect, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_27intersect)},
-  {__Pyx_NAMESTR("prune"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_30prune, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_29prune)},
-  {__Pyx_NAMESTR("lattice"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_32lattice, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_31lattice)},
-  {__Pyx_NAMESTR("plf"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_34plf, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_33plf)},
-  {__Pyx_NAMESTR("reweight"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_36reweight, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_35reweight)},
-  {__Pyx_NAMESTR("inside_outside"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_38inside_outside, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_37inside_outside)},
-  {0, 0, 0, 0}
+static PySequenceMethods __pyx_tp_as_sequence_SparseVector = {
+  __pyx_pw_4cdec_5_cdec_12SparseVector_18__len__, /*sq_length*/
+  0, /*sq_concat*/
+  0, /*sq_repeat*/
+  __pyx_sq_item_4cdec_5_cdec_SparseVector, /*sq_item*/
+  0, /*sq_slice*/
+  0, /*sq_ass_item*/
+  0, /*sq_ass_slice*/
+  __pyx_pw_4cdec_5_cdec_12SparseVector_20__contains__, /*sq_contains*/
+  0, /*sq_inplace_concat*/
+  0, /*sq_inplace_repeat*/
 };
 
-static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_Hypergraph[] = {
-  {(char *)"edges", __pyx_getprop_4cdec_5_cdec_10Hypergraph_edges, 0, 0, 0},
-  {(char *)"nodes", __pyx_getprop_4cdec_5_cdec_10Hypergraph_nodes, 0, 0, 0},
-  {(char *)"goal", __pyx_getprop_4cdec_5_cdec_10Hypergraph_goal, 0, 0, 0},
-  {(char *)"npaths", __pyx_getprop_4cdec_5_cdec_10Hypergraph_npaths, 0, 0, 0},
-  {0, 0, 0, 0, 0}
+static PyMappingMethods __pyx_tp_as_mapping_SparseVector = {
+  __pyx_pw_4cdec_5_cdec_12SparseVector_18__len__, /*mp_length*/
+  __pyx_pw_4cdec_5_cdec_12SparseVector_7__getitem__, /*mp_subscript*/
+  __pyx_mp_ass_subscript_4cdec_5_cdec_SparseVector, /*mp_ass_subscript*/
 };
 
-static PyTypeObject __pyx_type_4cdec_5_cdec_Hypergraph = {
+static PyTypeObject __pyx_type_4cdec_5_cdec_SparseVector = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.Hypergraph"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_Hypergraph), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.SparseVector"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_SparseVector), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_Hypergraph, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec_SparseVector, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -22879,9 +22529,9 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Hypergraph = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  0, /*tp_as_number*/
-  0, /*tp_as_sequence*/
-  0, /*tp_as_mapping*/
+  &__pyx_tp_as_number_SparseVector, /*tp_as_number*/
+  &__pyx_tp_as_sequence_SparseVector, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping_SparseVector, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
@@ -22892,21 +22542,21 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Hypergraph = {
   0, /*tp_doc*/
   0, /*tp_traverse*/
   0, /*tp_clear*/
-  0, /*tp_richcompare*/
+  __pyx_pw_4cdec_5_cdec_12SparseVector_16__richcmp__, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
-  0, /*tp_iter*/
+  __pyx_pw_4cdec_5_cdec_12SparseVector_11__iter__, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_4cdec_5_cdec_Hypergraph, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec_SparseVector, /*tp_methods*/
   0, /*tp_members*/
-  __pyx_getsets_4cdec_5_cdec_Hypergraph, /*tp_getset*/
+  0, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
   0, /*tp_descr_set*/
   0, /*tp_dictoffset*/
-  0, /*tp_init*/
+  __pyx_pw_4cdec_5_cdec_12SparseVector_1__init__, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_Hypergraph, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec_SparseVector, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -22918,134 +22568,115 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Hypergraph = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
-static struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphEdge __pyx_vtable_4cdec_5_cdec_HypergraphEdge;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_HypergraphEdge(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *p;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_26__make_config *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_26__make_config[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_26__make_config = 0;
+
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_26__make_config(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_26__make_config *p;
   PyObject *o;
-  if (likely((t->tp_flags & Py_TPFLAGS_IS_ABSTRACT) == 0)) {
-    o = (*t->tp_alloc)(t, 0);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_26__make_config > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_26__make_config)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_26__make_config[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_26__make_config];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_26__make_config));
+    PyObject_INIT(o, t);
+    PyObject_GC_Track(o);
   } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
+    o = (*t->tp_alloc)(t, 0);
+    if (unlikely(!o)) return 0;
   }
-  if (unlikely(!o)) return 0;
-  p = ((struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *)o);
-  p->__pyx_vtab = __pyx_vtabptr_4cdec_5_cdec_HypergraphEdge;
-  p->trule = ((struct __pyx_obj_4cdec_5_cdec_TRule *)Py_None); Py_INCREF(Py_None);
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_26__make_config *)o);
+  p->__pyx_v_config = 0;
+  p->__pyx_v_info = 0;
+  p->__pyx_v_key = 0;
+  p->__pyx_v_name = 0;
+  p->__pyx_v_value = 0;
+  p->__pyx_t_0 = 0;
+  p->__pyx_t_1 = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec_HypergraphEdge(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *p = (struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *)o;
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && !_PyGC_FINALIZED(o)) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
-  }
-  #endif
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_26__make_config(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_26__make_config *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_26__make_config *)o;
   PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->trule);
-  (*Py_TYPE(o)->tp_free)(o);
+  Py_CLEAR(p->__pyx_v_config);
+  Py_CLEAR(p->__pyx_v_info);
+  Py_CLEAR(p->__pyx_v_key);
+  Py_CLEAR(p->__pyx_v_name);
+  Py_CLEAR(p->__pyx_v_value);
+  Py_CLEAR(p->__pyx_t_0);
+  Py_CLEAR(p->__pyx_t_1);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_26__make_config < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_26__make_config))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_26__make_config[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_26__make_config++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_26__make_config *)o);
+  } else {
+    (*Py_TYPE(o)->tp_free)(o);
+  }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec_HypergraphEdge(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_26__make_config(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *p = (struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *)o;
-  if (p->trule) {
-    e = (*v)(((PyObject*)p->trule), a); if (e) return e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_26__make_config *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_26__make_config *)o;
+  if (p->__pyx_v_config) {
+    e = (*v)(p->__pyx_v_config, a); if (e) return e;
+  }
+  if (p->__pyx_v_info) {
+    e = (*v)(p->__pyx_v_info, a); if (e) return e;
+  }
+  if (p->__pyx_v_key) {
+    e = (*v)(p->__pyx_v_key, a); if (e) return e;
+  }
+  if (p->__pyx_v_name) {
+    e = (*v)(p->__pyx_v_name, a); if (e) return e;
+  }
+  if (p->__pyx_v_value) {
+    e = (*v)(p->__pyx_v_value, a); if (e) return e;
+  }
+  if (p->__pyx_t_0) {
+    e = (*v)(p->__pyx_t_0, a); if (e) return e;
+  }
+  if (p->__pyx_t_1) {
+    e = (*v)(p->__pyx_t_1, a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec_HypergraphEdge(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_26__make_config(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_26__make_config *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_26__make_config *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *p = (struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *)o;
-  tmp = ((PyObject*)p->trule);
-  p->trule = ((struct __pyx_obj_4cdec_5_cdec_TRule *)Py_None); Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_v_config);
+  p->__pyx_v_config = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_info);
+  p->__pyx_v_info = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_key);
+  p->__pyx_v_key = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_name);
+  p->__pyx_v_name = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_value);
+  p->__pyx_v_value = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_t_0);
+  p->__pyx_t_0 = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_t_1);
+  p->__pyx_t_1 = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphEdge_head_node(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_9head_node_1__get__(o);
-}
-
-static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphEdge_tail_nodes(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_10tail_nodes_1__get__(o);
-}
-
-static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphEdge_span(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_4span_1__get__(o);
-}
-
-static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphEdge_src_span(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_8src_span_1__get__(o);
-}
-
-static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphEdge_feature_values(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_14feature_values_1__get__(o);
-}
-
-static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphEdge_prob(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_4prob_1__get__(o);
-}
-
-static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphEdge_trule(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_5trule_1__get__(o);
-}
-
-static int __pyx_setprop_4cdec_5_cdec_14HypergraphEdge_trule(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
-  if (v) {
-    return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_5trule_3__set__(o, v);
-  }
-  else {
-    return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_5trule_5__del__(o);
-  }
-}
-
-static PyMethodDef __pyx_methods_4cdec_5_cdec_HypergraphEdge[] = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_26__make_config[] = {
   {0, 0, 0, 0}
 };
 
-static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_HypergraphEdge[] = {
-  {(char *)"head_node", __pyx_getprop_4cdec_5_cdec_14HypergraphEdge_head_node, 0, 0, 0},
-  {(char *)"tail_nodes", __pyx_getprop_4cdec_5_cdec_14HypergraphEdge_tail_nodes, 0, 0, 0},
-  {(char *)"span", __pyx_getprop_4cdec_5_cdec_14HypergraphEdge_span, 0, 0, 0},
-  {(char *)"src_span", __pyx_getprop_4cdec_5_cdec_14HypergraphEdge_src_span, 0, 0, 0},
-  {(char *)"feature_values", __pyx_getprop_4cdec_5_cdec_14HypergraphEdge_feature_values, 0, 0, 0},
-  {(char *)"prob", __pyx_getprop_4cdec_5_cdec_14HypergraphEdge_prob, 0, 0, 0},
-  {(char *)"trule", __pyx_getprop_4cdec_5_cdec_14HypergraphEdge_trule, __pyx_setprop_4cdec_5_cdec_14HypergraphEdge_trule, 0, 0},
-  {0, 0, 0, 0, 0}
-};
-
-static PySequenceMethods __pyx_tp_as_sequence_HypergraphEdge = {
-  __pyx_pw_4cdec_5_cdec_14HypergraphEdge_1__len__, /*sq_length*/
-  0, /*sq_concat*/
-  0, /*sq_repeat*/
-  0, /*sq_item*/
-  0, /*sq_slice*/
-  0, /*sq_ass_item*/
-  0, /*sq_ass_slice*/
-  0, /*sq_contains*/
-  0, /*sq_inplace_concat*/
-  0, /*sq_inplace_repeat*/
-};
-
-static PyMappingMethods __pyx_tp_as_mapping_HypergraphEdge = {
-  __pyx_pw_4cdec_5_cdec_14HypergraphEdge_1__len__, /*mp_length*/
-  0, /*mp_subscript*/
-  0, /*mp_ass_subscript*/
-};
-
-static PyTypeObject __pyx_type_4cdec_5_cdec_HypergraphEdge = {
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_26__make_config = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.HypergraphEdge"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_HypergraphEdge), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_26__make_config"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_26__make_config), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_HypergraphEdge, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_26__make_config, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -23056,25 +22687,25 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_HypergraphEdge = {
   #endif
   0, /*tp_repr*/
   0, /*tp_as_number*/
-  &__pyx_tp_as_sequence_HypergraphEdge, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping_HypergraphEdge, /*tp_as_mapping*/
+  0, /*tp_as_sequence*/
+  0, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec_HypergraphEdge, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec_HypergraphEdge, /*tp_clear*/
-  __pyx_pw_4cdec_5_cdec_14HypergraphEdge_3__richcmp__, /*tp_richcompare*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_26__make_config, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_26__make_config, /*tp_clear*/
+  0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_4cdec_5_cdec_HypergraphEdge, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_26__make_config, /*tp_methods*/
   0, /*tp_members*/
-  __pyx_getsets_4cdec_5_cdec_HypergraphEdge, /*tp_getset*/
+  0, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
@@ -23082,7 +22713,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_HypergraphEdge = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_HypergraphEdge, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_26__make_config, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -23094,74 +22725,86 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_HypergraphEdge = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
-static struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphNode __pyx_vtable_4cdec_5_cdec_HypergraphNode;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_HypergraphNode(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_4cdec_5_cdec_HypergraphNode *p;
+static PyObject *__pyx_tp_new_4cdec_5_cdec_NT(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec_NT *p;
   PyObject *o;
-  if (likely((t->tp_flags & Py_TPFLAGS_IS_ABSTRACT) == 0)) {
-    o = (*t->tp_alloc)(t, 0);
-  } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
-  }
+  o = (*t->tp_alloc)(t, 0);
   if (unlikely(!o)) return 0;
-  p = ((struct __pyx_obj_4cdec_5_cdec_HypergraphNode *)o);
-  p->__pyx_vtab = __pyx_vtabptr_4cdec_5_cdec_HypergraphNode;
+  p = ((struct __pyx_obj_4cdec_5_cdec_NT *)o);
+  p->cat = ((PyObject*)Py_None); Py_INCREF(Py_None);
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec_HypergraphNode(PyObject *o) {
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && (!PyType_IS_GC(Py_TYPE(o)) || !_PyGC_FINALIZED(o))) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
-  }
-  #endif
+static void __pyx_tp_dealloc_4cdec_5_cdec_NT(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec_NT *p = (struct __pyx_obj_4cdec_5_cdec_NT *)o;
+  PyObject_GC_UnTrack(o);
+  Py_CLEAR(p->cat);
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphNode_id(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_14HypergraphNode_2id_1__get__(o);
+static int __pyx_tp_traverse_4cdec_5_cdec_NT(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_4cdec_5_cdec_NT *p = (struct __pyx_obj_4cdec_5_cdec_NT *)o;
+  if (p->cat) {
+    e = (*v)(p->cat, a); if (e) return e;
+  }
+  return 0;
 }
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphNode_in_edges(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_14HypergraphNode_8in_edges_1__get__(o);
+static int __pyx_tp_clear_4cdec_5_cdec_NT(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec_NT *p = (struct __pyx_obj_4cdec_5_cdec_NT *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->cat);
+  p->cat = ((PyObject*)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
 }
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphNode_out_edges(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_14HypergraphNode_9out_edges_1__get__(o);
+static PyObject *__pyx_getprop_4cdec_5_cdec_2NT_cat(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_2NT_3cat_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphNode_span(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_14HypergraphNode_4span_1__get__(o);
+static int __pyx_setprop_4cdec_5_cdec_2NT_cat(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_4cdec_5_cdec_2NT_3cat_3__set__(o, v);
+  }
+  else {
+    return __pyx_pw_4cdec_5_cdec_2NT_3cat_5__del__(o);
+  }
 }
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphNode_cat(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_14HypergraphNode_3cat_1__get__(o);
+static PyObject *__pyx_getprop_4cdec_5_cdec_2NT_ref(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_2NT_3ref_1__get__(o);
 }
 
-static PyMethodDef __pyx_methods_4cdec_5_cdec_HypergraphNode[] = {
+static int __pyx_setprop_4cdec_5_cdec_2NT_ref(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_4cdec_5_cdec_2NT_3ref_3__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
+}
+
+static PyMethodDef __pyx_methods_4cdec_5_cdec_NT[] = {
   {0, 0, 0, 0}
 };
 
-static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_HypergraphNode[] = {
-  {(char *)"id", __pyx_getprop_4cdec_5_cdec_14HypergraphNode_id, 0, 0, 0},
-  {(char *)"in_edges", __pyx_getprop_4cdec_5_cdec_14HypergraphNode_in_edges, 0, 0, 0},
-  {(char *)"out_edges", __pyx_getprop_4cdec_5_cdec_14HypergraphNode_out_edges, 0, 0, 0},
-  {(char *)"span", __pyx_getprop_4cdec_5_cdec_14HypergraphNode_span, 0, 0, 0},
-  {(char *)"cat", __pyx_getprop_4cdec_5_cdec_14HypergraphNode_cat, 0, 0, 0},
+static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_NT[] = {
+  {(char *)"cat", __pyx_getprop_4cdec_5_cdec_2NT_cat, __pyx_setprop_4cdec_5_cdec_2NT_cat, 0, 0},
+  {(char *)"ref", __pyx_getprop_4cdec_5_cdec_2NT_ref, __pyx_setprop_4cdec_5_cdec_2NT_ref, 0, 0},
   {0, 0, 0, 0, 0}
 };
 
-static PyTypeObject __pyx_type_4cdec_5_cdec_HypergraphNode = {
+static PyTypeObject __pyx_type_4cdec_5_cdec_NT = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.HypergraphNode"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_HypergraphNode), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.NT"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_NT), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_HypergraphNode, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec_NT, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -23176,29 +22819,29 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_HypergraphNode = {
   0, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
-  0, /*tp_str*/
+  __pyx_pw_4cdec_5_cdec_2NT_3__str__, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  0, /*tp_traverse*/
-  0, /*tp_clear*/
-  __pyx_pw_4cdec_5_cdec_14HypergraphNode_1__richcmp__, /*tp_richcompare*/
+  __pyx_tp_traverse_4cdec_5_cdec_NT, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec_NT, /*tp_clear*/
+  0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_4cdec_5_cdec_HypergraphNode, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec_NT, /*tp_methods*/
   0, /*tp_members*/
-  __pyx_getsets_4cdec_5_cdec_HypergraphNode, /*tp_getset*/
+  __pyx_getsets_4cdec_5_cdec_NT, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
   0, /*tp_descr_set*/
   0, /*tp_dictoffset*/
-  0, /*tp_init*/
+  __pyx_pw_4cdec_5_cdec_2NT_1__init__, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_HypergraphNode, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec_NT, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -23210,18 +22853,11 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_HypergraphNode = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
 static PyObject *__pyx_tp_new_4cdec_5_cdec_Lattice(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o;
-  if (likely((t->tp_flags & Py_TPFLAGS_IS_ABSTRACT) == 0)) {
-    o = (*t->tp_alloc)(t, 0);
-  } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
-  }
+  o = (*t->tp_alloc)(t, 0);
   if (unlikely(!o)) return 0;
   if (unlikely(__pyx_pw_4cdec_5_cdec_7Lattice_1__cinit__(o, __pyx_empty_tuple, NULL) < 0)) {
     Py_DECREF(o); o = 0;
@@ -23230,16 +22866,12 @@ static PyObject *__pyx_tp_new_4cdec_5_cdec_Lattice(PyTypeObject *t, CYTHON_UNUSE
 }
 
 static void __pyx_tp_dealloc_4cdec_5_cdec_Lattice(PyObject *o) {
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && (!PyType_IS_GC(Py_TYPE(o)) || !_PyGC_FINALIZED(o))) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
-  }
-  #endif
   {
     PyObject *etype, *eval, *etb;
     PyErr_Fetch(&etype, &eval, &etb);
     ++Py_REFCNT(o);
     __pyx_pw_4cdec_5_cdec_7Lattice_5__dealloc__(o);
+    if (PyErr_Occurred()) PyErr_WriteUnraisable(o);
     --Py_REFCNT(o);
     PyErr_Restore(etype, eval, etb);
   }
@@ -23259,7 +22891,7 @@ static int __pyx_mp_ass_subscript_4cdec_5_cdec_Lattice(PyObject *o, PyObject *i,
   }
   else {
     PyErr_Format(PyExc_NotImplementedError,
-      "Subscript deletion not supported by %.200s", Py_TYPE(o)->tp_name);
+      "Subscript deletion not supported by %s", Py_TYPE(o)->tp_name);
     return -1;
   }
 }
@@ -23344,66 +22976,67 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Lattice = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_Candidate(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_15_sample_trees[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_15_sample_trees = 0;
+
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_15_sample_trees(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees *p;
   PyObject *o;
-  if (likely((t->tp_flags & Py_TPFLAGS_IS_ABSTRACT) == 0)) {
-    o = (*t->tp_alloc)(t, 0);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_15_sample_trees > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_15_sample_trees[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_15_sample_trees];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees));
+    PyObject_INIT(o, t);
+    PyObject_GC_Track(o);
   } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
+    o = (*t->tp_alloc)(t, 0);
+    if (unlikely(!o)) return 0;
   }
-  if (unlikely(!o)) return 0;
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees *)o);
+  p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec_Candidate(PyObject *o) {
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && (!PyType_IS_GC(Py_TYPE(o)) || !_PyGC_FINALIZED(o))) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_15_sample_trees(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees *)o;
+  PyObject_GC_UnTrack(o);
+  Py_CLEAR(p->__pyx_v_self);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_15_sample_trees < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_15_sample_trees[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_15_sample_trees++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees *)o);
+  } else {
+    (*Py_TYPE(o)->tp_free)(o);
   }
-  #endif
-  (*Py_TYPE(o)->tp_free)(o);
-}
-
-static PyObject *__pyx_getprop_4cdec_5_cdec_9Candidate_words(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_9Candidate_5words_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_9Candidate_fmap(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_9Candidate_4fmap_1__get__(o);
-}
-
-static PyObject *__pyx_getprop_4cdec_5_cdec_9Candidate_score(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_9Candidate_5score_1__get__(o);
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_15_sample_trees(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees *)o;
+  if (p->__pyx_v_self) {
+    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
+  }
+  return 0;
 }
 
-static int __pyx_setprop_4cdec_5_cdec_9Candidate_score(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
-  if (v) {
-    return __pyx_pw_4cdec_5_cdec_9Candidate_5score_3__set__(o, v);
-  }
-  else {
-    PyErr_SetString(PyExc_NotImplementedError, "__del__");
-    return -1;
-  }
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_15_sample_trees(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
 }
 
-static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_Candidate[] = {
-  {(char *)"words", __pyx_getprop_4cdec_5_cdec_9Candidate_words, 0, 0, 0},
-  {(char *)"fmap", __pyx_getprop_4cdec_5_cdec_9Candidate_fmap, 0, 0, 0},
-  {(char *)"score", __pyx_getprop_4cdec_5_cdec_9Candidate_score, __pyx_setprop_4cdec_5_cdec_9Candidate_score, 0, 0},
-  {0, 0, 0, 0, 0}
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_15_sample_trees[] = {
+  {0, 0, 0, 0}
 };
 
-static PyTypeObject __pyx_type_4cdec_5_cdec_Candidate = {
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_15_sample_trees = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.Candidate"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_Candidate), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_15_sample_trees"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15_sample_trees), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_Candidate, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_15_sample_trees, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -23422,17 +23055,17 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Candidate = {
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  0, /*tp_traverse*/
-  0, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_15_sample_trees, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_15_sample_trees, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_15_sample_trees, /*tp_methods*/
   0, /*tp_members*/
-  __pyx_getsets_4cdec_5_cdec_Candidate, /*tp_getset*/
+  0, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
@@ -23440,7 +23073,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Candidate = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_Candidate, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_15_sample_trees, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -23452,127 +23085,102 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Candidate = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
+static struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphEdge __pyx_vtable_4cdec_5_cdec_HypergraphEdge;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_SufficientStats(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec_HypergraphEdge(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *p;
   PyObject *o;
-  if (likely((t->tp_flags & Py_TPFLAGS_IS_ABSTRACT) == 0)) {
-    o = (*t->tp_alloc)(t, 0);
-  } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
-  }
+  o = (*t->tp_alloc)(t, 0);
   if (unlikely(!o)) return 0;
+  p = ((struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *)o);
+  p->__pyx_vtab = __pyx_vtabptr_4cdec_5_cdec_HypergraphEdge;
+  p->trule = ((struct __pyx_obj_4cdec_5_cdec_TRule *)Py_None); Py_INCREF(Py_None);
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec_SufficientStats(PyObject *o) {
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && (!PyType_IS_GC(Py_TYPE(o)) || !_PyGC_FINALIZED(o))) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
-  }
-  #endif
-  {
-    PyObject *etype, *eval, *etb;
-    PyErr_Fetch(&etype, &eval, &etb);
-    ++Py_REFCNT(o);
-    __pyx_pw_4cdec_5_cdec_15SufficientStats_1__dealloc__(o);
-    --Py_REFCNT(o);
-    PyErr_Restore(etype, eval, etb);
-  }
+static void __pyx_tp_dealloc_4cdec_5_cdec_HypergraphEdge(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *p = (struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *)o;
+  PyObject_GC_UnTrack(o);
+  Py_CLEAR(p->trule);
   (*Py_TYPE(o)->tp_free)(o);
 }
-static PyObject *__pyx_sq_item_4cdec_5_cdec_SufficientStats(PyObject *o, Py_ssize_t i) {
-  PyObject *r;
-  PyObject *x = PyInt_FromSsize_t(i); if(!x) return 0;
-  r = Py_TYPE(o)->tp_as_mapping->mp_subscript(o, x);
-  Py_DECREF(x);
-  return r;
+
+static int __pyx_tp_traverse_4cdec_5_cdec_HypergraphEdge(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *p = (struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *)o;
+  if (p->trule) {
+    e = (*v)(((PyObject*)p->trule), a); if (e) return e;
+  }
+  return 0;
 }
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_15SufficientStats_score(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_15SufficientStats_5score_1__get__(o);
+static int __pyx_tp_clear_4cdec_5_cdec_HypergraphEdge(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *p = (struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->trule);
+  p->trule = ((struct __pyx_obj_4cdec_5_cdec_TRule *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
 }
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_15SufficientStats_detail(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_15SufficientStats_6detail_1__get__(o);
+static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphEdge_head_node(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_9head_node_1__get__(o);
 }
 
-static PyMethodDef __pyx_methods_4cdec_5_cdec_SufficientStats[] = {
+static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphEdge_tail_nodes(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_10tail_nodes_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphEdge_span(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_4span_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphEdge_src_span(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_8src_span_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphEdge_feature_values(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_14feature_values_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphEdge_prob(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_4prob_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphEdge_trule(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_5trule_1__get__(o);
+}
+
+static int __pyx_setprop_4cdec_5_cdec_14HypergraphEdge_trule(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_5trule_3__set__(o, v);
+  }
+  else {
+    return __pyx_pw_4cdec_5_cdec_14HypergraphEdge_5trule_5__del__(o);
+  }
+}
+
+static PyMethodDef __pyx_methods_4cdec_5_cdec_HypergraphEdge[] = {
   {0, 0, 0, 0}
 };
 
-static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_SufficientStats[] = {
-  {(char *)"score", __pyx_getprop_4cdec_5_cdec_15SufficientStats_score, 0, 0, 0},
-  {(char *)"detail", __pyx_getprop_4cdec_5_cdec_15SufficientStats_detail, 0, 0, 0},
+static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_HypergraphEdge[] = {
+  {(char *)"head_node", __pyx_getprop_4cdec_5_cdec_14HypergraphEdge_head_node, 0, 0, 0},
+  {(char *)"tail_nodes", __pyx_getprop_4cdec_5_cdec_14HypergraphEdge_tail_nodes, 0, 0, 0},
+  {(char *)"span", __pyx_getprop_4cdec_5_cdec_14HypergraphEdge_span, 0, 0, 0},
+  {(char *)"src_span", __pyx_getprop_4cdec_5_cdec_14HypergraphEdge_src_span, 0, 0, 0},
+  {(char *)"feature_values", __pyx_getprop_4cdec_5_cdec_14HypergraphEdge_feature_values, 0, 0, 0},
+  {(char *)"prob", __pyx_getprop_4cdec_5_cdec_14HypergraphEdge_prob, 0, 0, 0},
+  {(char *)"trule", __pyx_getprop_4cdec_5_cdec_14HypergraphEdge_trule, __pyx_setprop_4cdec_5_cdec_14HypergraphEdge_trule, 0, 0},
   {0, 0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number_SufficientStats = {
-  __pyx_pw_4cdec_5_cdec_15SufficientStats_12__add__, /*nb_add*/
-  0, /*nb_subtract*/
-  0, /*nb_multiply*/
-  #if PY_MAJOR_VERSION < 3
-  0, /*nb_divide*/
-  #endif
-  0, /*nb_remainder*/
-  0, /*nb_divmod*/
-  0, /*nb_power*/
-  0, /*nb_negative*/
-  0, /*nb_positive*/
-  0, /*nb_absolute*/
-  0, /*nb_nonzero*/
-  0, /*nb_invert*/
-  0, /*nb_lshift*/
-  0, /*nb_rshift*/
-  0, /*nb_and*/
-  0, /*nb_xor*/
-  0, /*nb_or*/
-  #if PY_MAJOR_VERSION < 3
-  0, /*nb_coerce*/
-  #endif
-  0, /*nb_int*/
-  #if PY_MAJOR_VERSION < 3
-  0, /*nb_long*/
-  #else
-  0, /*reserved*/
-  #endif
-  0, /*nb_float*/
-  #if PY_MAJOR_VERSION < 3
-  0, /*nb_oct*/
-  #endif
-  #if PY_MAJOR_VERSION < 3
-  0, /*nb_hex*/
-  #endif
-  __pyx_pw_4cdec_5_cdec_15SufficientStats_10__iadd__, /*nb_inplace_add*/
-  0, /*nb_inplace_subtract*/
-  0, /*nb_inplace_multiply*/
-  #if PY_MAJOR_VERSION < 3
-  0, /*nb_inplace_divide*/
-  #endif
-  0, /*nb_inplace_remainder*/
-  0, /*nb_inplace_power*/
-  0, /*nb_inplace_lshift*/
-  0, /*nb_inplace_rshift*/
-  0, /*nb_inplace_and*/
-  0, /*nb_inplace_xor*/
-  0, /*nb_inplace_or*/
-  0, /*nb_floor_divide*/
-  0, /*nb_true_divide*/
-  0, /*nb_inplace_floor_divide*/
-  0, /*nb_inplace_true_divide*/
-  #if PY_VERSION_HEX >= 0x02050000
-  0, /*nb_index*/
-  #endif
-};
-
-static PySequenceMethods __pyx_tp_as_sequence_SufficientStats = {
-  __pyx_pw_4cdec_5_cdec_15SufficientStats_3__len__, /*sq_length*/
+static PySequenceMethods __pyx_tp_as_sequence_HypergraphEdge = {
+  __pyx_pw_4cdec_5_cdec_14HypergraphEdge_1__len__, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
-  __pyx_sq_item_4cdec_5_cdec_SufficientStats, /*sq_item*/
+  0, /*sq_item*/
   0, /*sq_slice*/
   0, /*sq_ass_item*/
   0, /*sq_ass_slice*/
@@ -23581,18 +23189,18 @@ static PySequenceMethods __pyx_tp_as_sequence_SufficientStats = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping_SufficientStats = {
-  __pyx_pw_4cdec_5_cdec_15SufficientStats_3__len__, /*mp_length*/
-  __pyx_pw_4cdec_5_cdec_15SufficientStats_8__getitem__, /*mp_subscript*/
+static PyMappingMethods __pyx_tp_as_mapping_HypergraphEdge = {
+  __pyx_pw_4cdec_5_cdec_14HypergraphEdge_1__len__, /*mp_length*/
+  0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyTypeObject __pyx_type_4cdec_5_cdec_SufficientStats = {
+static PyTypeObject __pyx_type_4cdec_5_cdec_HypergraphEdge = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.SufficientStats"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_SufficientStats), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.HypergraphEdge"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_HypergraphEdge), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_SufficientStats, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec_HypergraphEdge, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -23602,26 +23210,26 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_SufficientStats = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number_SufficientStats, /*tp_as_number*/
-  &__pyx_tp_as_sequence_SufficientStats, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping_SufficientStats, /*tp_as_mapping*/
+  0, /*tp_as_number*/
+  &__pyx_tp_as_sequence_HypergraphEdge, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping_HypergraphEdge, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  0, /*tp_traverse*/
-  0, /*tp_clear*/
-  0, /*tp_richcompare*/
+  __pyx_tp_traverse_4cdec_5_cdec_HypergraphEdge, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec_HypergraphEdge, /*tp_clear*/
+  __pyx_pw_4cdec_5_cdec_14HypergraphEdge_3__richcmp__, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
-  __pyx_pw_4cdec_5_cdec_15SufficientStats_5__iter__, /*tp_iter*/
+  0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_4cdec_5_cdec_SufficientStats, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec_HypergraphEdge, /*tp_methods*/
   0, /*tp_members*/
-  __pyx_getsets_4cdec_5_cdec_SufficientStats, /*tp_getset*/
+  __pyx_getsets_4cdec_5_cdec_HypergraphEdge, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
@@ -23629,7 +23237,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_SufficientStats = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_SufficientStats, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec_HypergraphEdge, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -23641,79 +23249,67 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_SufficientStats = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_CandidateSet(PyTypeObject *t, PyObject *a, PyObject *k) {
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_2__phrase[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_2__phrase = 0;
+
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_2__phrase(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *p;
   PyObject *o;
-  if (likely((t->tp_flags & Py_TPFLAGS_IS_ABSTRACT) == 0)) {
-    o = (*t->tp_alloc)(t, 0);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_2__phrase > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_2__phrase[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_2__phrase];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase));
+    PyObject_INIT(o, t);
+    PyObject_GC_Track(o);
   } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
-  }
-  if (unlikely(!o)) return 0;
-  if (unlikely(__pyx_pw_4cdec_5_cdec_12CandidateSet_1__cinit__(o, a, k) < 0)) {
-    Py_DECREF(o); o = 0;
+    o = (*t->tp_alloc)(t, 0);
+    if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *)o);
+  p->__pyx_v_phrase = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec_CandidateSet(PyObject *o) {
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && (!PyType_IS_GC(Py_TYPE(o)) || !_PyGC_FINALIZED(o))) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_2__phrase(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *)o;
+  PyObject_GC_UnTrack(o);
+  Py_CLEAR(p->__pyx_v_phrase);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_2__phrase < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_2__phrase[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_2__phrase++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *)o);
+  } else {
+    (*Py_TYPE(o)->tp_free)(o);
   }
-  #endif
-  {
-    PyObject *etype, *eval, *etb;
-    PyErr_Fetch(&etype, &eval, &etb);
-    ++Py_REFCNT(o);
-    __pyx_pw_4cdec_5_cdec_12CandidateSet_3__dealloc__(o);
-    --Py_REFCNT(o);
-    PyErr_Restore(etype, eval, etb);
+}
+
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_2__phrase(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *)o;
+  if (p->__pyx_v_phrase) {
+    e = (*v)(p->__pyx_v_phrase, a); if (e) return e;
   }
-  (*Py_TYPE(o)->tp_free)(o);
+  return 0;
 }
-static PyObject *__pyx_sq_item_4cdec_5_cdec_CandidateSet(PyObject *o, Py_ssize_t i) {
-  PyObject *r;
-  PyObject *x = PyInt_FromSsize_t(i); if(!x) return 0;
-  r = Py_TYPE(o)->tp_as_mapping->mp_subscript(o, x);
-  Py_DECREF(x);
-  return r;
+
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_2__phrase(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_phrase);
+  p->__pyx_v_phrase = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
 }
 
-static PyMethodDef __pyx_methods_4cdec_5_cdec_CandidateSet[] = {
-  {__Pyx_NAMESTR("add_kbest"), (PyCFunction)__pyx_pw_4cdec_5_cdec_12CandidateSet_12add_kbest, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_12CandidateSet_11add_kbest)},
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_2__phrase[] = {
   {0, 0, 0, 0}
 };
 
-static PySequenceMethods __pyx_tp_as_sequence_CandidateSet = {
-  __pyx_pw_4cdec_5_cdec_12CandidateSet_5__len__, /*sq_length*/
-  0, /*sq_concat*/
-  0, /*sq_repeat*/
-  __pyx_sq_item_4cdec_5_cdec_CandidateSet, /*sq_item*/
-  0, /*sq_slice*/
-  0, /*sq_ass_item*/
-  0, /*sq_ass_slice*/
-  0, /*sq_contains*/
-  0, /*sq_inplace_concat*/
-  0, /*sq_inplace_repeat*/
-};
-
-static PyMappingMethods __pyx_tp_as_mapping_CandidateSet = {
-  __pyx_pw_4cdec_5_cdec_12CandidateSet_5__len__, /*mp_length*/
-  __pyx_pw_4cdec_5_cdec_12CandidateSet_7__getitem__, /*mp_subscript*/
-  0, /*mp_ass_subscript*/
-};
-
-static PyTypeObject __pyx_type_4cdec_5_cdec_CandidateSet = {
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_2__phrase = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.CandidateSet"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_CandidateSet), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_2__phrase"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_CandidateSet, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_2__phrase, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -23724,23 +23320,23 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_CandidateSet = {
   #endif
   0, /*tp_repr*/
   0, /*tp_as_number*/
-  &__pyx_tp_as_sequence_CandidateSet, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping_CandidateSet, /*tp_as_mapping*/
+  0, /*tp_as_sequence*/
+  0, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  0, /*tp_traverse*/
-  0, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_2__phrase, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_2__phrase, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
-  __pyx_pw_4cdec_5_cdec_12CandidateSet_9__iter__, /*tp_iter*/
+  0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_4cdec_5_cdec_CandidateSet, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_2__phrase, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -23750,7 +23346,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_CandidateSet = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_CandidateSet, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_2__phrase, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -23762,51 +23358,41 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_CandidateSet = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_SegmentEvaluator(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec_Scorer(PyTypeObject *t, PyObject *a, PyObject *k) {
   PyObject *o;
-  if (likely((t->tp_flags & Py_TPFLAGS_IS_ABSTRACT) == 0)) {
-    o = (*t->tp_alloc)(t, 0);
-  } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
-  }
+  o = (*t->tp_alloc)(t, 0);
   if (unlikely(!o)) return 0;
+  if (unlikely(__pyx_pw_4cdec_5_cdec_6Scorer_1__cinit__(o, a, k) < 0)) {
+    Py_DECREF(o); o = 0;
+  }
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec_SegmentEvaluator(PyObject *o) {
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && (!PyType_IS_GC(Py_TYPE(o)) || !_PyGC_FINALIZED(o))) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
-  }
-  #endif
+static void __pyx_tp_dealloc_4cdec_5_cdec_Scorer(PyObject *o) {
   {
     PyObject *etype, *eval, *etb;
     PyErr_Fetch(&etype, &eval, &etb);
     ++Py_REFCNT(o);
-    __pyx_pw_4cdec_5_cdec_16SegmentEvaluator_1__dealloc__(o);
+    __pyx_pw_4cdec_5_cdec_6Scorer_3__dealloc__(o);
+    if (PyErr_Occurred()) PyErr_WriteUnraisable(o);
     --Py_REFCNT(o);
     PyErr_Restore(etype, eval, etb);
   }
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static PyMethodDef __pyx_methods_4cdec_5_cdec_SegmentEvaluator[] = {
-  {__Pyx_NAMESTR("evaluate"), (PyCFunction)__pyx_pw_4cdec_5_cdec_16SegmentEvaluator_3evaluate, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_16SegmentEvaluator_2evaluate)},
-  {__Pyx_NAMESTR("candidate_set"), (PyCFunction)__pyx_pw_4cdec_5_cdec_16SegmentEvaluator_5candidate_set, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_16SegmentEvaluator_4candidate_set)},
+static PyMethodDef __pyx_methods_4cdec_5_cdec_Scorer[] = {
   {0, 0, 0, 0}
 };
 
-static PyTypeObject __pyx_type_4cdec_5_cdec_SegmentEvaluator = {
+static PyTypeObject __pyx_type_4cdec_5_cdec_Scorer = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.SegmentEvaluator"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_SegmentEvaluator), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.Scorer"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_Scorer), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_SegmentEvaluator, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec_Scorer, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -23820,8 +23406,8 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_SegmentEvaluator = {
   0, /*tp_as_sequence*/
   0, /*tp_as_mapping*/
   0, /*tp_hash*/
-  0, /*tp_call*/
-  0, /*tp_str*/
+  __pyx_pw_4cdec_5_cdec_6Scorer_5__call__, /*tp_call*/
+  __pyx_pw_4cdec_5_cdec_6Scorer_7__str__, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
@@ -23833,7 +23419,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_SegmentEvaluator = {
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_4cdec_5_cdec_SegmentEvaluator, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec_Scorer, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -23843,7 +23429,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_SegmentEvaluator = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_SegmentEvaluator, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec_Scorer, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -23855,52 +23441,62 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_SegmentEvaluator = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
+static struct __pyx_vtabstruct_4cdec_5_cdec_HypergraphNode __pyx_vtable_4cdec_5_cdec_HypergraphNode;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_Scorer(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec_HypergraphNode(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec_HypergraphNode *p;
   PyObject *o;
-  if (likely((t->tp_flags & Py_TPFLAGS_IS_ABSTRACT) == 0)) {
-    o = (*t->tp_alloc)(t, 0);
-  } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
-  }
+  o = (*t->tp_alloc)(t, 0);
   if (unlikely(!o)) return 0;
-  if (unlikely(__pyx_pw_4cdec_5_cdec_6Scorer_1__cinit__(o, a, k) < 0)) {
-    Py_DECREF(o); o = 0;
-  }
+  p = ((struct __pyx_obj_4cdec_5_cdec_HypergraphNode *)o);
+  p->__pyx_vtab = __pyx_vtabptr_4cdec_5_cdec_HypergraphNode;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec_Scorer(PyObject *o) {
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && (!PyType_IS_GC(Py_TYPE(o)) || !_PyGC_FINALIZED(o))) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
-  }
-  #endif
-  {
-    PyObject *etype, *eval, *etb;
-    PyErr_Fetch(&etype, &eval, &etb);
-    ++Py_REFCNT(o);
-    __pyx_pw_4cdec_5_cdec_6Scorer_3__dealloc__(o);
-    --Py_REFCNT(o);
-    PyErr_Restore(etype, eval, etb);
-  }
+static void __pyx_tp_dealloc_4cdec_5_cdec_HypergraphNode(PyObject *o) {
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static PyMethodDef __pyx_methods_4cdec_5_cdec_Scorer[] = {
+static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphNode_id(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_14HypergraphNode_2id_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphNode_in_edges(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_14HypergraphNode_8in_edges_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphNode_out_edges(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_14HypergraphNode_9out_edges_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphNode_span(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_14HypergraphNode_4span_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_14HypergraphNode_cat(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_14HypergraphNode_3cat_1__get__(o);
+}
+
+static PyMethodDef __pyx_methods_4cdec_5_cdec_HypergraphNode[] = {
   {0, 0, 0, 0}
 };
 
-static PyTypeObject __pyx_type_4cdec_5_cdec_Scorer = {
+static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_HypergraphNode[] = {
+  {(char *)"id", __pyx_getprop_4cdec_5_cdec_14HypergraphNode_id, 0, 0, 0},
+  {(char *)"in_edges", __pyx_getprop_4cdec_5_cdec_14HypergraphNode_in_edges, 0, 0, 0},
+  {(char *)"out_edges", __pyx_getprop_4cdec_5_cdec_14HypergraphNode_out_edges, 0, 0, 0},
+  {(char *)"span", __pyx_getprop_4cdec_5_cdec_14HypergraphNode_span, 0, 0, 0},
+  {(char *)"cat", __pyx_getprop_4cdec_5_cdec_14HypergraphNode_cat, 0, 0, 0},
+  {0, 0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec_HypergraphNode = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.Scorer"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_Scorer), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.HypergraphNode"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_HypergraphNode), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_Scorer, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec_HypergraphNode, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -23914,8 +23510,8 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Scorer = {
   0, /*tp_as_sequence*/
   0, /*tp_as_mapping*/
   0, /*tp_hash*/
-  __pyx_pw_4cdec_5_cdec_6Scorer_5__call__, /*tp_call*/
-  __pyx_pw_4cdec_5_cdec_6Scorer_7__str__, /*tp_str*/
+  0, /*tp_call*/
+  0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
@@ -23923,13 +23519,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Scorer = {
   0, /*tp_doc*/
   0, /*tp_traverse*/
   0, /*tp_clear*/
-  0, /*tp_richcompare*/
+  __pyx_pw_4cdec_5_cdec_14HypergraphNode_1__richcmp__, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_4cdec_5_cdec_Scorer, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec_HypergraphNode, /*tp_methods*/
   0, /*tp_members*/
-  0, /*tp_getset*/
+  __pyx_getsets_4cdec_5_cdec_HypergraphNode, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
@@ -23937,7 +23533,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Scorer = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_Scorer, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec_HypergraphNode, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -23949,70 +23545,83 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Scorer = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_Metric(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_4cdec_5_cdec_Metric *p;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_10_kbest_features[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_10_kbest_features = 0;
+
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_10_kbest_features(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *p;
   PyObject *o;
-  if (likely((t->tp_flags & Py_TPFLAGS_IS_ABSTRACT) == 0)) {
-    o = (*t->tp_alloc)(t, 0);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_10_kbest_features > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_10_kbest_features[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_10_kbest_features];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features));
+    PyObject_INIT(o, t);
+    PyObject_GC_Track(o);
   } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
-  }
-  if (unlikely(!o)) return 0;
-  p = ((struct __pyx_obj_4cdec_5_cdec_Metric *)o);
-  p->scorer = ((struct __pyx_obj_4cdec_5_cdec_Scorer *)Py_None); Py_INCREF(Py_None);
-  if (unlikely(__pyx_pw_4cdec_5_cdec_6Metric_1__cinit__(o, __pyx_empty_tuple, NULL) < 0)) {
-    Py_DECREF(o); o = 0;
+    o = (*t->tp_alloc)(t, 0);
+    if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *)o);
+  p->__pyx_v_fmap = 0;
+  p->__pyx_v_self = 0;
+  p->__pyx_v_size = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec_Metric(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec_Metric *p = (struct __pyx_obj_4cdec_5_cdec_Metric *)o;
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && !_PyGC_FINALIZED(o)) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
-  }
-  #endif
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_10_kbest_features(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *)o;
   PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->scorer);
-  (*Py_TYPE(o)->tp_free)(o);
+  Py_CLEAR(p->__pyx_v_fmap);
+  Py_CLEAR(p->__pyx_v_self);
+  Py_CLEAR(p->__pyx_v_size);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_10_kbest_features < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_10_kbest_features[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_10_kbest_features++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *)o);
+  } else {
+    (*Py_TYPE(o)->tp_free)(o);
+  }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec_Metric(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_10_kbest_features(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec_Metric *p = (struct __pyx_obj_4cdec_5_cdec_Metric *)o;
-  if (p->scorer) {
-    e = (*v)(((PyObject*)p->scorer), a); if (e) return e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *)o;
+  if (p->__pyx_v_fmap) {
+    e = (*v)(((PyObject*)p->__pyx_v_fmap), a); if (e) return e;
+  }
+  if (p->__pyx_v_self) {
+    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
+  }
+  if (p->__pyx_v_size) {
+    e = (*v)(p->__pyx_v_size, a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec_Metric(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_10_kbest_features(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec_Metric *p = (struct __pyx_obj_4cdec_5_cdec_Metric *)o;
-  tmp = ((PyObject*)p->scorer);
-  p->scorer = ((struct __pyx_obj_4cdec_5_cdec_Scorer *)Py_None); Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_v_fmap);
+  p->__pyx_v_fmap = ((struct __pyx_obj_4cdec_5_cdec_SparseVector *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_size);
+  p->__pyx_v_size = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyMethodDef __pyx_methods_4cdec_5_cdec_Metric[] = {
-  {__Pyx_NAMESTR("score"), (PyCFunction)__pyx_pw_4cdec_5_cdec_6Metric_5score, METH_NOARGS, __Pyx_DOCSTR(0)},
-  {__Pyx_NAMESTR("evaluate"), (PyCFunction)__pyx_pw_4cdec_5_cdec_6Metric_7evaluate, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(0)},
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_10_kbest_features[] = {
   {0, 0, 0, 0}
 };
 
-static PyTypeObject __pyx_type_4cdec_5_cdec_Metric = {
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_10_kbest_features = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.Metric"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_Metric), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_10_kbest_features"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_Metric, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_10_kbest_features, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -24026,20 +23635,20 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Metric = {
   0, /*tp_as_sequence*/
   0, /*tp_as_mapping*/
   0, /*tp_hash*/
-  __pyx_pw_4cdec_5_cdec_6Metric_3__call__, /*tp_call*/
+  0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec_Metric, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec_Metric, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_10_kbest_features, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_10_kbest_features, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_4cdec_5_cdec_Metric, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_10_kbest_features, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -24049,7 +23658,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Metric = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_Metric, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_10_kbest_features, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -24061,70 +23670,26 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Metric = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec_Decoder(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_4cdec_5_cdec_Decoder *p;
+static PyObject *__pyx_tp_new_4cdec_5_cdec_NTRef(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o;
-  if (likely((t->tp_flags & Py_TPFLAGS_IS_ABSTRACT) == 0)) {
-    o = (*t->tp_alloc)(t, 0);
-  } else {
-    o = (PyObject *) PyBaseObject_Type.tp_new(t, __pyx_empty_tuple, 0);
-  }
+  o = (*t->tp_alloc)(t, 0);
   if (unlikely(!o)) return 0;
-  p = ((struct __pyx_obj_4cdec_5_cdec_Decoder *)o);
-  p->weights = ((struct __pyx_obj_4cdec_5_cdec_DenseVector *)Py_None); Py_INCREF(Py_None);
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec_Decoder(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec_Decoder *p = (struct __pyx_obj_4cdec_5_cdec_Decoder *)o;
-  #if PY_VERSION_HEX >= 0x030400a1
-  if (unlikely(Py_TYPE(o)->tp_finalize) && !_PyGC_FINALIZED(o)) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
-  }
-  #endif
-  PyObject_GC_UnTrack(o);
-  {
-    PyObject *etype, *eval, *etb;
-    PyErr_Fetch(&etype, &eval, &etb);
-    ++Py_REFCNT(o);
-    __pyx_pw_4cdec_5_cdec_7Decoder_3__dealloc__(o);
-    --Py_REFCNT(o);
-    PyErr_Restore(etype, eval, etb);
-  }
-  Py_CLEAR(p->weights);
+static void __pyx_tp_dealloc_4cdec_5_cdec_NTRef(PyObject *o) {
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec_Decoder(PyObject *o, visitproc v, void *a) {
-  int e;
-  struct __pyx_obj_4cdec_5_cdec_Decoder *p = (struct __pyx_obj_4cdec_5_cdec_Decoder *)o;
-  if (p->weights) {
-    e = (*v)(((PyObject*)p->weights), a); if (e) return e;
-  }
-  return 0;
-}
-
-static int __pyx_tp_clear_4cdec_5_cdec_Decoder(PyObject *o) {
-  PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec_Decoder *p = (struct __pyx_obj_4cdec_5_cdec_Decoder *)o;
-  tmp = ((PyObject*)p->weights);
-  p->weights = ((struct __pyx_obj_4cdec_5_cdec_DenseVector *)Py_None); Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  return 0;
-}
-
-static PyObject *__pyx_getprop_4cdec_5_cdec_7Decoder_weights(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_7Decoder_7weights_1__get__(o);
+static PyObject *__pyx_getprop_4cdec_5_cdec_5NTRef_ref(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_5NTRef_3ref_1__get__(o);
 }
 
-static int __pyx_setprop_4cdec_5_cdec_7Decoder_weights(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+static int __pyx_setprop_4cdec_5_cdec_5NTRef_ref(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
   if (v) {
-    return __pyx_pw_4cdec_5_cdec_7Decoder_7weights_3__set__(o, v);
+    return __pyx_pw_4cdec_5_cdec_5NTRef_3ref_3__set__(o, v);
   }
   else {
     PyErr_SetString(PyExc_NotImplementedError, "__del__");
@@ -24132,28 +23697,21 @@ static int __pyx_setprop_4cdec_5_cdec_7Decoder_weights(PyObject *o, PyObject *v,
   }
 }
 
-static PyObject *__pyx_getprop_4cdec_5_cdec_7Decoder_formalism(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_4cdec_5_cdec_7Decoder_9formalism_1__get__(o);
-}
-
-static PyMethodDef __pyx_methods_4cdec_5_cdec_Decoder[] = {
-  {__Pyx_NAMESTR("read_weights"), (PyCFunction)__pyx_pw_4cdec_5_cdec_7Decoder_5read_weights, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_7Decoder_4read_weights)},
-  {__Pyx_NAMESTR("translate"), (PyCFunction)__pyx_pw_4cdec_5_cdec_7Decoder_7translate, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_7Decoder_6translate)},
+static PyMethodDef __pyx_methods_4cdec_5_cdec_NTRef[] = {
   {0, 0, 0, 0}
 };
 
-static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_Decoder[] = {
-  {(char *)"weights", __pyx_getprop_4cdec_5_cdec_7Decoder_weights, __pyx_setprop_4cdec_5_cdec_7Decoder_weights, 0, 0},
-  {(char *)"formalism", __pyx_getprop_4cdec_5_cdec_7Decoder_formalism, 0, 0, 0},
+static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_NTRef[] = {
+  {(char *)"ref", __pyx_getprop_4cdec_5_cdec_5NTRef_ref, __pyx_setprop_4cdec_5_cdec_5NTRef_ref, 0, 0},
   {0, 0, 0, 0, 0}
 };
 
-static PyTypeObject __pyx_type_4cdec_5_cdec_Decoder = {
+static PyTypeObject __pyx_type_4cdec_5_cdec_NTRef = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.Decoder"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec_Decoder), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.NTRef"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_NTRef), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec_Decoder, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec_NTRef, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -24168,29 +23726,29 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Decoder = {
   0, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
-  0, /*tp_str*/
+  __pyx_pw_4cdec_5_cdec_5NTRef_3__str__, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec_Decoder, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec_Decoder, /*tp_clear*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_4cdec_5_cdec_Decoder, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec_NTRef, /*tp_methods*/
   0, /*tp_members*/
-  __pyx_getsets_4cdec_5_cdec_Decoder, /*tp_getset*/
+  __pyx_getsets_4cdec_5_cdec_NTRef, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
   0, /*tp_descr_set*/
   0, /*tp_dictoffset*/
-  __pyx_pw_4cdec_5_cdec_7Decoder_1__init__, /*tp_init*/
+  __pyx_pw_4cdec_5_cdec_5NTRef_1__init__, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec_Decoder, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec_NTRef, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -24202,63 +23760,57 @@ static PyTypeObject __pyx_type_4cdec_5_cdec_Decoder = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct____iter__[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct____iter__ = 0;
-
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct____iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec_Grammar(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct____iter__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct____iter__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct____iter__];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__));
-    (void) PyObject_INIT(o, t);
-    PyObject_GC_Track(o);
-  } else {
-    o = (*t->tp_alloc)(t, 0);
-    if (unlikely(!o)) return 0;
-  }
+  o = (*t->tp_alloc)(t, 0);
+  if (unlikely(!o)) return 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct____iter__(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *)o;
-  PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->__pyx_v_self);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct____iter__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct____iter__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct____iter__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *)o);
-  } else {
-    (*Py_TYPE(o)->tp_free)(o);
+static void __pyx_tp_dealloc_4cdec_5_cdec_Grammar(PyObject *o) {
+  {
+    PyObject *etype, *eval, *etb;
+    PyErr_Fetch(&etype, &eval, &etb);
+    ++Py_REFCNT(o);
+    __pyx_pw_4cdec_5_cdec_7Grammar_1__dealloc__(o);
+    if (PyErr_Occurred()) PyErr_WriteUnraisable(o);
+    --Py_REFCNT(o);
+    PyErr_Restore(etype, eval, etb);
   }
+  (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct____iter__(PyObject *o, visitproc v, void *a) {
-  int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *)o;
-  if (p->__pyx_v_self) {
-    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
-  }
-  return 0;
+static PyObject *__pyx_getprop_4cdec_5_cdec_7Grammar_name(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_7Grammar_4name_1__get__(o);
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct____iter__(PyObject *o) {
-  PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *)o;
-  tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_DenseVector *)Py_None); Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  return 0;
+static int __pyx_setprop_4cdec_5_cdec_7Grammar_name(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_4cdec_5_cdec_7Grammar_4name_3__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct____iter__ = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec_Grammar[] = {
+  {0, 0, 0, 0}
+};
+
+static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_Grammar[] = {
+  {(char *)"name", __pyx_getprop_4cdec_5_cdec_7Grammar_name, __pyx_setprop_4cdec_5_cdec_7Grammar_name, 0, 0},
+  {0, 0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec_Grammar = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct____iter__"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.Grammar"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_Grammar), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct____iter__, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec_Grammar, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -24277,17 +23829,17 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct____iter__ = {
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct____iter__, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct____iter__, /*tp_clear*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
-  0, /*tp_iter*/
+  __pyx_pw_4cdec_5_cdec_7Grammar_3__iter__, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec_Grammar, /*tp_methods*/
   0, /*tp_members*/
-  0, /*tp_getset*/
+  __pyx_getsets_4cdec_5_cdec_Grammar, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
@@ -24295,7 +23847,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct____iter__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct____iter__, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec_Grammar, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -24307,63 +23859,85 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct____iter__ = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
+static struct __pyx_vtabstruct_4cdec_5_cdec_Hypergraph __pyx_vtable_4cdec_5_cdec_Hypergraph;
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_1___iter__[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_1___iter__ = 0;
-
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_1___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec_Hypergraph(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec_Hypergraph *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_1___iter__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_1___iter__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_1___iter__];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__));
-    (void) PyObject_INIT(o, t);
-    PyObject_GC_Track(o);
-  } else {
-    o = (*t->tp_alloc)(t, 0);
-    if (unlikely(!o)) return 0;
-  }
+  o = (*t->tp_alloc)(t, 0);
+  if (unlikely(!o)) return 0;
+  p = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)o);
+  p->__pyx_vtab = __pyx_vtabptr_4cdec_5_cdec_Hypergraph;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_1___iter__(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *)o;
-  PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->__pyx_v_self);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_1___iter__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_1___iter__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_1___iter__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *)o);
-  } else {
-    (*Py_TYPE(o)->tp_free)(o);
+static void __pyx_tp_dealloc_4cdec_5_cdec_Hypergraph(PyObject *o) {
+  {
+    PyObject *etype, *eval, *etb;
+    PyErr_Fetch(&etype, &eval, &etb);
+    ++Py_REFCNT(o);
+    __pyx_pw_4cdec_5_cdec_10Hypergraph_1__dealloc__(o);
+    if (PyErr_Occurred()) PyErr_WriteUnraisable(o);
+    --Py_REFCNT(o);
+    PyErr_Restore(etype, eval, etb);
   }
+  (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_1___iter__(PyObject *o, visitproc v, void *a) {
-  int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *)o;
-  if (p->__pyx_v_self) {
-    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
-  }
-  return 0;
+static PyObject *__pyx_getprop_4cdec_5_cdec_10Hypergraph_edges(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_10Hypergraph_5edges_1__get__(o);
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_1___iter__(PyObject *o) {
-  PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *)o;
-  tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_SparseVector *)Py_None); Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  return 0;
+static PyObject *__pyx_getprop_4cdec_5_cdec_10Hypergraph_nodes(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_10Hypergraph_5nodes_1__get__(o);
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_1___iter__ = {
+static PyObject *__pyx_getprop_4cdec_5_cdec_10Hypergraph_goal(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_10Hypergraph_4goal_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_10Hypergraph_npaths(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_10Hypergraph_6npaths_1__get__(o);
+}
+
+static PyMethodDef __pyx_methods_4cdec_5_cdec_Hypergraph[] = {
+  {__Pyx_NAMESTR("viterbi"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_3viterbi, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_2viterbi)},
+  {__Pyx_NAMESTR("viterbi_trees"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_5viterbi_trees, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_4viterbi_trees)},
+  {__Pyx_NAMESTR("viterbi_features"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_7viterbi_features, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_6viterbi_features)},
+  {__Pyx_NAMESTR("viterbi_forest"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_9viterbi_forest, METH_NOARGS, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("viterbi_joshua"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_11viterbi_joshua, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_10viterbi_joshua)},
+  {__Pyx_NAMESTR("kbest"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_13kbest, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_12kbest)},
+  {__Pyx_NAMESTR("kbest_trees"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_16kbest_trees, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_15kbest_trees)},
+  {__Pyx_NAMESTR("kbest_features"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_19kbest_features, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_18kbest_features)},
+  {__Pyx_NAMESTR("unique_kbest"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_22unique_kbest, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_21unique_kbest)},
+  {__Pyx_NAMESTR("unique_kbest_trees"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_25unique_kbest_trees, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_24unique_kbest_trees)},
+  {__Pyx_NAMESTR("unique_kbest_features"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_28unique_kbest_features, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_27unique_kbest_features)},
+  {__Pyx_NAMESTR("sample"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_31sample, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_30sample)},
+  {__Pyx_NAMESTR("sample_trees"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_34sample_trees, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_33sample_trees)},
+  {__Pyx_NAMESTR("intersect"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_37intersect, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_36intersect)},
+  {__Pyx_NAMESTR("prune"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_39prune, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_38prune)},
+  {__Pyx_NAMESTR("lattice"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_41lattice, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_40lattice)},
+  {__Pyx_NAMESTR("plf"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_43plf, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_42plf)},
+  {__Pyx_NAMESTR("reweight"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_45reweight, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_44reweight)},
+  {__Pyx_NAMESTR("inside_outside"), (PyCFunction)__pyx_pw_4cdec_5_cdec_10Hypergraph_47inside_outside, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_10Hypergraph_46inside_outside)},
+  {0, 0, 0, 0}
+};
+
+static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_Hypergraph[] = {
+  {(char *)"edges", __pyx_getprop_4cdec_5_cdec_10Hypergraph_edges, 0, 0, 0},
+  {(char *)"nodes", __pyx_getprop_4cdec_5_cdec_10Hypergraph_nodes, 0, 0, 0},
+  {(char *)"goal", __pyx_getprop_4cdec_5_cdec_10Hypergraph_goal, 0, 0, 0},
+  {(char *)"npaths", __pyx_getprop_4cdec_5_cdec_10Hypergraph_npaths, 0, 0, 0},
+  {0, 0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec_Hypergraph = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_1___iter__"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.Hypergraph"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_Hypergraph), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_1___iter__, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec_Hypergraph, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -24382,17 +23956,17 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_1___iter__ = {
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_1___iter__, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_1___iter__, /*tp_clear*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec_Hypergraph, /*tp_methods*/
   0, /*tp_members*/
-  0, /*tp_getset*/
+  __pyx_getsets_4cdec_5_cdec_Hypergraph, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
@@ -24400,7 +23974,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_1___iter__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_1___iter__, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec_Hypergraph, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -24412,63 +23986,68 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_1___iter__ = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_2__phrase[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_2__phrase = 0;
-
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_2__phrase(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec_CandidateSet(PyTypeObject *t, PyObject *a, PyObject *k) {
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_2__phrase > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_2__phrase[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_2__phrase];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase));
-    (void) PyObject_INIT(o, t);
-    PyObject_GC_Track(o);
-  } else {
-    o = (*t->tp_alloc)(t, 0);
-    if (unlikely(!o)) return 0;
+  o = (*t->tp_alloc)(t, 0);
+  if (unlikely(!o)) return 0;
+  if (unlikely(__pyx_pw_4cdec_5_cdec_12CandidateSet_1__cinit__(o, a, k) < 0)) {
+    Py_DECREF(o); o = 0;
   }
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_2__phrase(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *)o;
-  PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->__pyx_v_phrase);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_2__phrase < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_2__phrase[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_2__phrase++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *)o);
-  } else {
-    (*Py_TYPE(o)->tp_free)(o);
+static void __pyx_tp_dealloc_4cdec_5_cdec_CandidateSet(PyObject *o) {
+  {
+    PyObject *etype, *eval, *etb;
+    PyErr_Fetch(&etype, &eval, &etb);
+    ++Py_REFCNT(o);
+    __pyx_pw_4cdec_5_cdec_12CandidateSet_3__dealloc__(o);
+    if (PyErr_Occurred()) PyErr_WriteUnraisable(o);
+    --Py_REFCNT(o);
+    PyErr_Restore(etype, eval, etb);
   }
+  (*Py_TYPE(o)->tp_free)(o);
 }
-
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_2__phrase(PyObject *o, visitproc v, void *a) {
-  int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *)o;
-  if (p->__pyx_v_phrase) {
-    e = (*v)(p->__pyx_v_phrase, a); if (e) return e;
-  }
-  return 0;
+static PyObject *__pyx_sq_item_4cdec_5_cdec_CandidateSet(PyObject *o, Py_ssize_t i) {
+  PyObject *r;
+  PyObject *x = PyInt_FromSsize_t(i); if(!x) return 0;
+  r = Py_TYPE(o)->tp_as_mapping->mp_subscript(o, x);
+  Py_DECREF(x);
+  return r;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_2__phrase(PyObject *o) {
-  PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *)o;
-  tmp = ((PyObject*)p->__pyx_v_phrase);
-  p->__pyx_v_phrase = Py_None; Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  return 0;
-}
+static PyMethodDef __pyx_methods_4cdec_5_cdec_CandidateSet[] = {
+  {__Pyx_NAMESTR("add_kbest"), (PyCFunction)__pyx_pw_4cdec_5_cdec_12CandidateSet_12add_kbest, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_12CandidateSet_11add_kbest)},
+  {0, 0, 0, 0}
+};
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_2__phrase = {
+static PySequenceMethods __pyx_tp_as_sequence_CandidateSet = {
+  __pyx_pw_4cdec_5_cdec_12CandidateSet_5__len__, /*sq_length*/
+  0, /*sq_concat*/
+  0, /*sq_repeat*/
+  __pyx_sq_item_4cdec_5_cdec_CandidateSet, /*sq_item*/
+  0, /*sq_slice*/
+  0, /*sq_ass_item*/
+  0, /*sq_ass_slice*/
+  0, /*sq_contains*/
+  0, /*sq_inplace_concat*/
+  0, /*sq_inplace_repeat*/
+};
+
+static PyMappingMethods __pyx_tp_as_mapping_CandidateSet = {
+  __pyx_pw_4cdec_5_cdec_12CandidateSet_5__len__, /*mp_length*/
+  __pyx_pw_4cdec_5_cdec_12CandidateSet_7__getitem__, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec_CandidateSet = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_2__phrase"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.CandidateSet"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_CandidateSet), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_2__phrase, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec_CandidateSet, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -24479,23 +24058,23 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_2__phrase = {
   #endif
   0, /*tp_repr*/
   0, /*tp_as_number*/
-  0, /*tp_as_sequence*/
-  0, /*tp_as_mapping*/
+  &__pyx_tp_as_sequence_CandidateSet, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping_CandidateSet, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_2__phrase, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_2__phrase, /*tp_clear*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
-  0, /*tp_iter*/
+  __pyx_pw_4cdec_5_cdec_12CandidateSet_9__iter__, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec_CandidateSet, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -24505,7 +24084,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_2__phrase = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_2__phrase, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec_CandidateSet, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -24517,77 +24096,67 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_2__phrase = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_3_genexpr[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_3_genexpr = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_22_todot[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_22_todot = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_3_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_22_todot(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_3_genexpr > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_3_genexpr[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_3_genexpr];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_22_todot > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_22_todot[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_22_todot];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot *)o);
+  p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_3_genexpr(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_22_todot(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot *)o;
   PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->__pyx_outer_scope);
-  Py_CLEAR(p->__pyx_v_w);
-  Py_CLEAR(p->__pyx_t_0);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_3_genexpr < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_3_genexpr[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_3_genexpr++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *)o);
+  Py_CLEAR(p->__pyx_v_self);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_22_todot < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_22_todot[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_22_todot++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_3_genexpr(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_22_todot(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *)o;
-  if (p->__pyx_outer_scope) {
-    e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
-  }
-  if (p->__pyx_v_w) {
-    e = (*v)(p->__pyx_v_w, a); if (e) return e;
-  }
-  if (p->__pyx_t_0) {
-    e = (*v)(p->__pyx_t_0, a); if (e) return e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot *)o;
+  if (p->__pyx_v_self) {
+    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_3_genexpr(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_22_todot(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *)o;
-  tmp = ((PyObject*)p->__pyx_outer_scope);
-  p->__pyx_outer_scope = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *)Py_None); Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_w);
-  p->__pyx_v_w = Py_None; Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_t_0);
-  p->__pyx_t_0 = Py_None; Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Lattice *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_3_genexpr = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_22_todot[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_22_todot = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_3_genexpr"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_22_todot"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22_todot), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_3_genexpr, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_22_todot, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -24608,13 +24177,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_3_genexpr = {
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_3_genexpr, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_3_genexpr, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_22_todot, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_22_todot, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_22_todot, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -24624,7 +24193,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_3_genexpr = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_3_genexpr, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_22_todot, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -24636,63 +24205,91 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_3_genexpr = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_4___get__[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_4___get__ = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_4___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_4___get__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_4___get__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_4___get__];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *)o);
+  p->__pyx_v_e_tree = 0;
+  p->__pyx_v_f_tree = 0;
+  p->__pyx_v_self = 0;
+  p->__pyx_v_size = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_4___get__(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *)o;
   PyObject_GC_UnTrack(o);
+  Py_CLEAR(p->__pyx_v_e_tree);
+  Py_CLEAR(p->__pyx_v_f_tree);
   Py_CLEAR(p->__pyx_v_self);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_4___get__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_4___get__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_4___get__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *)o);
+  Py_CLEAR(p->__pyx_v_size);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_4___get__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *)o;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *)o;
+  if (p->__pyx_v_e_tree) {
+    e = (*v)(p->__pyx_v_e_tree, a); if (e) return e;
+  }
+  if (p->__pyx_v_f_tree) {
+    e = (*v)(p->__pyx_v_f_tree, a); if (e) return e;
+  }
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
+  if (p->__pyx_v_size) {
+    e = (*v)(p->__pyx_v_size, a); if (e) return e;
+  }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_4___get__(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *)o;
+  tmp = ((PyObject*)p->__pyx_v_e_tree);
+  p->__pyx_v_e_tree = ((PyObject*)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_f_tree);
+  p->__pyx_v_f_tree = ((PyObject*)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_TRule *)Py_None); Py_INCREF(Py_None);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_size);
+  p->__pyx_v_size = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_4___get__ = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_4___get__"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_9_kbest_trees"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_4___get__, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -24713,13 +24310,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_4___get__ = {
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_4___get__, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_4___get__, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -24729,7 +24326,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_4___get__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_4___get__, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -24741,25 +24338,25 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_4___get__ = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
 static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_5___str__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_5___str__[8];
 static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_5___str__ = 0;
 
 static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_5___str__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_5___str__ *p;
   PyObject *o;
   if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_5___str__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_5___str__)))) {
     o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_5___str__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_5___str__];
     memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_5___str__));
-    (void) PyObject_INIT(o, t);
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_5___str__ *)o);
+  p->__pyx_v_self = 0;
   return o;
 }
 
@@ -24784,14 +24381,18 @@ static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_5___str__(PyObject
 }
 
 static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_5___str__(PyObject *o) {
-  PyObject* tmp;
   struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_5___str__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_5___str__ *)o;
+  PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_v_self);
   p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_TRule *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_5___str__[] = {
+  {0, 0, 0, 0}
+};
+
 static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_5___str__ = {
   PyVarObject_HEAD_INIT(0, 0)
   __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_5___str__"), /*tp_name*/
@@ -24824,7 +24425,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_5___str__ = {
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_5___str__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -24846,77 +24447,40 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_5___str__ = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_6_genexpr[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_6_genexpr = 0;
-
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_6_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec_SegmentEvaluator(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_6_genexpr > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_6_genexpr[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_6_genexpr];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr));
-    (void) PyObject_INIT(o, t);
-    PyObject_GC_Track(o);
-  } else {
-    o = (*t->tp_alloc)(t, 0);
-    if (unlikely(!o)) return 0;
-  }
+  o = (*t->tp_alloc)(t, 0);
+  if (unlikely(!o)) return 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_6_genexpr(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *)o;
-  PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->__pyx_outer_scope);
-  Py_CLEAR(p->__pyx_v_feat);
-  Py_CLEAR(p->__pyx_t_0);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_6_genexpr < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_6_genexpr[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_6_genexpr++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *)o);
-  } else {
-    (*Py_TYPE(o)->tp_free)(o);
-  }
-}
-
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_6_genexpr(PyObject *o, visitproc v, void *a) {
-  int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *)o;
-  if (p->__pyx_outer_scope) {
-    e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
-  }
-  if (p->__pyx_v_feat) {
-    e = (*v)(p->__pyx_v_feat, a); if (e) return e;
-  }
-  if (p->__pyx_t_0) {
-    e = (*v)(p->__pyx_t_0, a); if (e) return e;
+static void __pyx_tp_dealloc_4cdec_5_cdec_SegmentEvaluator(PyObject *o) {
+  {
+    PyObject *etype, *eval, *etb;
+    PyErr_Fetch(&etype, &eval, &etb);
+    ++Py_REFCNT(o);
+    __pyx_pw_4cdec_5_cdec_16SegmentEvaluator_1__dealloc__(o);
+    if (PyErr_Occurred()) PyErr_WriteUnraisable(o);
+    --Py_REFCNT(o);
+    PyErr_Restore(etype, eval, etb);
   }
-  return 0;
+  (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_6_genexpr(PyObject *o) {
-  PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *)o;
-  tmp = ((PyObject*)p->__pyx_outer_scope);
-  p->__pyx_outer_scope = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_5___str__ *)Py_None); Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_feat);
-  p->__pyx_v_feat = Py_None; Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_t_0);
-  p->__pyx_t_0 = Py_None; Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  return 0;
-}
+static PyMethodDef __pyx_methods_4cdec_5_cdec_SegmentEvaluator[] = {
+  {__Pyx_NAMESTR("evaluate"), (PyCFunction)__pyx_pw_4cdec_5_cdec_16SegmentEvaluator_3evaluate, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_16SegmentEvaluator_2evaluate)},
+  {__Pyx_NAMESTR("candidate_set"), (PyCFunction)__pyx_pw_4cdec_5_cdec_16SegmentEvaluator_5candidate_set, METH_NOARGS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_16SegmentEvaluator_4candidate_set)},
+  {0, 0, 0, 0}
+};
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_6_genexpr = {
+static PyTypeObject __pyx_type_4cdec_5_cdec_SegmentEvaluator = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_6_genexpr"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.SegmentEvaluator"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_SegmentEvaluator), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_6_genexpr, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec_SegmentEvaluator, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -24935,15 +24499,15 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_6_genexpr = {
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_6_genexpr, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_6_genexpr, /*tp_clear*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec_SegmentEvaluator, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -24953,7 +24517,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_6_genexpr = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_6_genexpr, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec_SegmentEvaluator, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -24965,70 +24529,67 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_6_genexpr = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_7___iter__[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_7___iter__ = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_16___get__[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_16___get__ = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_7___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_16___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_7___iter__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_7___iter__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_7___iter__];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_16___get__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_16___get__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_16___get__];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *)o);
+  p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_7___iter__(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_16___get__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *)o;
   PyObject_GC_UnTrack(o);
   Py_CLEAR(p->__pyx_v_self);
-  Py_CLEAR(p->__pyx_v_trule);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_7___iter__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_7___iter__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_7___iter__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *)o);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_16___get__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_16___get__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_16___get__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_7___iter__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_16___get__(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *)o;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *)o;
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
-  if (p->__pyx_v_trule) {
-    e = (*v)(((PyObject*)p->__pyx_v_trule), a); if (e) return e;
-  }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_7___iter__(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_16___get__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *)o;
   tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Grammar *)Py_None); Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_trule);
-  p->__pyx_v_trule = ((struct __pyx_obj_4cdec_5_cdec_TRule *)Py_None); Py_INCREF(Py_None);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_7___iter__ = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_16___get__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_16___get__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_7___iter__"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_16___get__"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_7___iter__, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_16___get__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -25049,13 +24610,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_7___iter__ = {
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_7___iter__, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_7___iter__, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_16___get__, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_16___get__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_16___get__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -25065,7 +24626,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_7___iter__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_7___iter__, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_16___get__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -25077,70 +24638,67 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_7___iter__ = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_8_kbest[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_8_kbest = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_20___get__[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_20___get__ = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_8_kbest(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_20___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__ *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_8_kbest > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_8_kbest[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_8_kbest];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_20___get__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_20___get__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_20___get__];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__ *)o);
+  p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_8_kbest(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_20___get__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__ *)o;
   PyObject_GC_UnTrack(o);
   Py_CLEAR(p->__pyx_v_self);
-  Py_CLEAR(p->__pyx_v_size);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_8_kbest < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_8_kbest[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_8_kbest++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *)o);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_20___get__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_20___get__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_20___get__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__ *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_8_kbest(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_20___get__(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *)o;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__ *)o;
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
-  if (p->__pyx_v_size) {
-    e = (*v)(p->__pyx_v_size, a); if (e) return e;
-  }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_8_kbest(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_20___get__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__ *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *)o;
   tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_size);
-  p->__pyx_v_size = Py_None; Py_INCREF(Py_None);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_HypergraphNode *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_8_kbest = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_20___get__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_20___get__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_8_kbest"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_20___get__"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20___get__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_8_kbest, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_20___get__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -25161,13 +24719,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_8_kbest = {
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_8_kbest, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_8_kbest, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_20___get__, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_20___get__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_20___get__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -25177,7 +24735,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_8_kbest = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_8_kbest, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_20___get__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -25189,45 +24747,49 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_8_kbest = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features *)o);
+  p->__pyx_v_fmap = 0;
+  p->__pyx_v_self = 0;
+  p->__pyx_v_size = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features *)o;
   PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->__pyx_v_e_tree);
-  Py_CLEAR(p->__pyx_v_f_tree);
+  Py_CLEAR(p->__pyx_v_fmap);
   Py_CLEAR(p->__pyx_v_self);
   Py_CLEAR(p->__pyx_v_size);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *)o);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *)o;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features *)o;
+  if (p->__pyx_v_fmap) {
+    e = (*v)(((PyObject*)p->__pyx_v_fmap), a); if (e) return e;
+  }
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
@@ -25237,9 +24799,12 @@ static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees(PyObj
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees *)o;
+  tmp = ((PyObject*)p->__pyx_v_fmap);
+  p->__pyx_v_fmap = ((struct __pyx_obj_4cdec_5_cdec_SparseVector *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_self);
   p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
@@ -25249,12 +24814,16 @@ static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees(PyObject
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_9_kbest_trees"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_13_unique_kbest_features"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -25275,13 +24844,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees = {
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -25291,7 +24860,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -25303,77 +24872,83 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_10_kbest_features[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_10_kbest_features = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_28_genexpr *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_28_genexpr[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_28_genexpr = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_10_kbest_features(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_28_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_28_genexpr *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_10_kbest_features > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_10_kbest_features[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_10_kbest_features];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_28_genexpr > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_28_genexpr)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_28_genexpr[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_28_genexpr];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_28_genexpr));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_28_genexpr *)o);
+  p->__pyx_outer_scope = 0;
+  p->__pyx_v_kv = 0;
+  p->__pyx_t_0 = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_10_kbest_features(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_28_genexpr(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_28_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_28_genexpr *)o;
   PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->__pyx_v_fmap);
-  Py_CLEAR(p->__pyx_v_self);
-  Py_CLEAR(p->__pyx_v_size);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_10_kbest_features < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_10_kbest_features[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_10_kbest_features++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *)o);
+  Py_CLEAR(p->__pyx_outer_scope);
+  Py_CLEAR(p->__pyx_v_kv);
+  Py_CLEAR(p->__pyx_t_0);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_28_genexpr < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_28_genexpr))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_28_genexpr[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_28_genexpr++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_28_genexpr *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_10_kbest_features(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_28_genexpr(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *)o;
-  if (p->__pyx_v_fmap) {
-    e = (*v)(((PyObject*)p->__pyx_v_fmap), a); if (e) return e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_28_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_28_genexpr *)o;
+  if (p->__pyx_outer_scope) {
+    e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
   }
-  if (p->__pyx_v_self) {
-    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
+  if (p->__pyx_v_kv) {
+    e = (*v)(p->__pyx_v_kv, a); if (e) return e;
   }
-  if (p->__pyx_v_size) {
-    e = (*v)(p->__pyx_v_size, a); if (e) return e;
+  if (p->__pyx_t_0) {
+    e = (*v)(p->__pyx_t_0, a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_10_kbest_features(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_28_genexpr(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_28_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_28_genexpr *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features *)o;
-  tmp = ((PyObject*)p->__pyx_v_fmap);
-  p->__pyx_v_fmap = ((struct __pyx_obj_4cdec_5_cdec_SparseVector *)Py_None); Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_outer_scope);
+  p->__pyx_outer_scope = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_27___init__ *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_v_kv);
+  p->__pyx_v_kv = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_size);
-  p->__pyx_v_size = Py_None; Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_t_0);
+  p->__pyx_t_0 = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_10_kbest_features = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_28_genexpr[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_28_genexpr = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_10_kbest_features"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_10_kbest_features), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_28_genexpr"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_28_genexpr), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_10_kbest_features, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_28_genexpr, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -25394,13 +24969,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_10_kbest_features
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_10_kbest_features, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_10_kbest_features, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_28_genexpr, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_28_genexpr, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_28_genexpr, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -25410,7 +24985,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_10_kbest_features
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_10_kbest_features, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_28_genexpr, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -25422,63 +24997,83 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_10_kbest_features
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_sample *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_11_sample[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_11_sample = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_3_genexpr[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_3_genexpr = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_11_sample(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_3_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_11_sample > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_sample)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_11_sample[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_11_sample];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_sample));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_3_genexpr > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_3_genexpr[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_3_genexpr];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *)o);
+  p->__pyx_outer_scope = 0;
+  p->__pyx_v_w = 0;
+  p->__pyx_t_0 = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_11_sample(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_sample *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_sample *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_3_genexpr(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *)o;
   PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->__pyx_v_self);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_11_sample < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_sample))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_11_sample[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_11_sample++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_sample *)o);
+  Py_CLEAR(p->__pyx_outer_scope);
+  Py_CLEAR(p->__pyx_v_w);
+  Py_CLEAR(p->__pyx_t_0);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_3_genexpr < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_3_genexpr[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_3_genexpr++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_11_sample(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_3_genexpr(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_sample *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_sample *)o;
-  if (p->__pyx_v_self) {
-    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *)o;
+  if (p->__pyx_outer_scope) {
+    e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
+  }
+  if (p->__pyx_v_w) {
+    e = (*v)(p->__pyx_v_w, a); if (e) return e;
+  }
+  if (p->__pyx_t_0) {
+    e = (*v)(p->__pyx_t_0, a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_11_sample(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_3_genexpr(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_sample *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_sample *)o;
-  tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_outer_scope);
+  p->__pyx_outer_scope = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_2__phrase *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_w);
+  p->__pyx_v_w = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_t_0);
+  p->__pyx_t_0 = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_11_sample = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_3_genexpr[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_3_genexpr = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_11_sample"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_11_sample), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_3_genexpr"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_3_genexpr), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_11_sample, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_3_genexpr, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -25499,13 +25094,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_11_sample = {
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_11_sample, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_11_sample, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_3_genexpr, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_3_genexpr, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_3_genexpr, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -25515,7 +25110,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_11_sample = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_11_sample, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_3_genexpr, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -25527,63 +25122,75 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_11_sample = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_sample_trees *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_12_sample_trees[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_12_sample_trees = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_8_kbest[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_8_kbest = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_12_sample_trees(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_8_kbest(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_12_sample_trees > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_sample_trees)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_12_sample_trees[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_12_sample_trees];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_sample_trees));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_8_kbest > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_8_kbest[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_8_kbest];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *)o);
+  p->__pyx_v_self = 0;
+  p->__pyx_v_size = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_12_sample_trees(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_sample_trees *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_sample_trees *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_8_kbest(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *)o;
   PyObject_GC_UnTrack(o);
   Py_CLEAR(p->__pyx_v_self);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_12_sample_trees < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_sample_trees))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_12_sample_trees[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_12_sample_trees++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_sample_trees *)o);
+  Py_CLEAR(p->__pyx_v_size);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_8_kbest < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_8_kbest[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_8_kbest++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_12_sample_trees(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_8_kbest(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_sample_trees *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_sample_trees *)o;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *)o;
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
+  if (p->__pyx_v_size) {
+    e = (*v)(p->__pyx_v_size, a); if (e) return e;
+  }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_12_sample_trees(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_8_kbest(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_sample_trees *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_sample_trees *)o;
   tmp = ((PyObject*)p->__pyx_v_self);
   p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_size);
+  p->__pyx_v_size = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_12_sample_trees = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_8_kbest[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_8_kbest = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_12_sample_trees"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_sample_trees), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_8_kbest"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_8_kbest), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_12_sample_trees, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_8_kbest, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -25604,13 +25211,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_12_sample_trees =
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_12_sample_trees, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_12_sample_trees, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_8_kbest, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_8_kbest, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_8_kbest, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -25620,7 +25227,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_12_sample_trees =
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_12_sample_trees, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_8_kbest, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -25632,63 +25239,67 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_12_sample_trees =
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13___get__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_13___get__[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_13___get__ = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___get__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_18___get__[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_18___get__ = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_13___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_18___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___get__ *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_13___get__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13___get__)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_13___get__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_13___get__];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13___get__));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_18___get__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___get__)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_18___get__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_18___get__];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___get__));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___get__ *)o);
+  p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_13___get__(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13___get__ *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_18___get__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___get__ *)o;
   PyObject_GC_UnTrack(o);
   Py_CLEAR(p->__pyx_v_self);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_13___get__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13___get__))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_13___get__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_13___get__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13___get__ *)o);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_18___get__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___get__))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_18___get__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_18___get__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___get__ *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_13___get__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_18___get__(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13___get__ *)o;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___get__ *)o;
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_13___get__(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_18___get__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___get__ *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13___get__ *)o;
   tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_13___get__ = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_18___get__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_18___get__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_13___get__"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_13___get__), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_18___get__"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___get__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_13___get__, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_18___get__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -25709,13 +25320,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_13___get__ = {
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_13___get__, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_13___get__, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_18___get__, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_18___get__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_18___get__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -25725,7 +25336,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_13___get__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_13___get__, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_18___get__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -25737,63 +25348,75 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_13___get__ = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_14___get__[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_14___get__ = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_7___iter__[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_7___iter__ = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_14___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_7___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_14___get__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_14___get__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_14___get__];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_7___iter__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_7___iter__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_7___iter__];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *)o);
+  p->__pyx_v_self = 0;
+  p->__pyx_v_trule = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_14___get__(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__ *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_7___iter__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *)o;
   PyObject_GC_UnTrack(o);
   Py_CLEAR(p->__pyx_v_self);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_14___get__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_14___get__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_14___get__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__ *)o);
+  Py_CLEAR(p->__pyx_v_trule);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_7___iter__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_7___iter__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_7___iter__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_14___get__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_7___iter__(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__ *)o;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *)o;
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
+  if (p->__pyx_v_trule) {
+    e = (*v)(((PyObject*)p->__pyx_v_trule), a); if (e) return e;
+  }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_14___get__(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_7___iter__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__ *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__ *)o;
   tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Grammar *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_trule);
+  p->__pyx_v_trule = ((struct __pyx_obj_4cdec_5_cdec_TRule *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_14___get__ = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_7___iter__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_7___iter__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_14___get__"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14___get__), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_7___iter__"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_7___iter__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_14___get__, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_7___iter__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -25814,13 +25437,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_14___get__ = {
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_14___get__, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_14___get__, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_7___iter__, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_7___iter__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_7___iter__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -25830,7 +25453,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_14___get__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_14___get__, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_7___iter__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -25842,63 +25465,67 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_14___get__ = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15___get__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_15___get__[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_15___get__ = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19___get__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_19___get__[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_19___get__ = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_15___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_19___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19___get__ *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_15___get__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15___get__)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_15___get__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_15___get__];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15___get__));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_19___get__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19___get__)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_19___get__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_19___get__];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19___get__));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19___get__ *)o);
+  p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_15___get__(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15___get__ *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_19___get__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19___get__ *)o;
   PyObject_GC_UnTrack(o);
   Py_CLEAR(p->__pyx_v_self);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_15___get__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15___get__))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_15___get__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_15___get__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15___get__ *)o);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_19___get__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19___get__))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_19___get__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_19___get__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19___get__ *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_15___get__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_19___get__(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15___get__ *)o;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19___get__ *)o;
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_15___get__(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_19___get__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19___get__ *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15___get__ *)o;
   tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *)Py_None); Py_INCREF(Py_None);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_HypergraphNode *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_15___get__ = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_19___get__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_19___get__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_15___get__"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_15___get__), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_19___get__"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19___get__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_15___get__, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_19___get__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -25919,13 +25546,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_15___get__ = {
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_15___get__, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_15___get__, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_19___get__, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_19___get__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_19___get__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -25935,7 +25562,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_15___get__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_15___get__, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_19___get__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -25947,63 +25574,24 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_15___get__ = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_16___get__[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_16___get__ = 0;
-
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_16___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_16___get__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_16___get__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_16___get__];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__));
-    (void) PyObject_INIT(o, t);
-    PyObject_GC_Track(o);
-  } else {
-    o = (*t->tp_alloc)(t, 0);
-    if (unlikely(!o)) return 0;
-  }
+static PyObject *__pyx_tp_new_4cdec_5_cdec_TextGrammar(PyTypeObject *t, PyObject *a, PyObject *k) {
+  PyObject *o = __pyx_tp_new_4cdec_5_cdec_Grammar(t, a, k);
+  if (unlikely(!o)) return 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_16___get__(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *)o;
-  PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->__pyx_v_self);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_16___get__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_16___get__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_16___get__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *)o);
-  } else {
-    (*Py_TYPE(o)->tp_free)(o);
-  }
-}
-
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_16___get__(PyObject *o, visitproc v, void *a) {
-  int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *)o;
-  if (p->__pyx_v_self) {
-    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
-  }
-  return 0;
-}
-
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_16___get__(PyObject *o) {
-  PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__ *)o;
-  tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_HypergraphNode *)Py_None); Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  return 0;
-}
+static PyMethodDef __pyx_methods_4cdec_5_cdec_TextGrammar[] = {
+  {0, 0, 0, 0}
+};
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_16___get__ = {
+static PyTypeObject __pyx_type_4cdec_5_cdec_TextGrammar = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_16___get__"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_16___get__), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.TextGrammar"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_TextGrammar), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_16___get__, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec_Grammar, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -26022,15 +25610,19 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_16___get__ = {
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_16___get__, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_16___get__, /*tp_clear*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
+  #if CYTHON_COMPILING_IN_PYPY
+  __pyx_pw_4cdec_5_cdec_7Grammar_3__iter__, /*tp_iter*/
+  #else
   0, /*tp_iter*/
+  #endif
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec_TextGrammar, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -26038,9 +25630,9 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_16___get__ = {
   0, /*tp_descr_get*/
   0, /*tp_descr_set*/
   0, /*tp_dictoffset*/
-  0, /*tp_init*/
+  __pyx_pw_4cdec_5_cdec_11TextGrammar_1__init__, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_16___get__, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec_TextGrammar, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -26052,63 +25644,67 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_16___get__ = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_17___get__[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_17___get__ = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_25___iter__[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_25___iter__ = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_17___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_25___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__ *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_17___get__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_17___get__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_17___get__];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_25___iter__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_25___iter__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_25___iter__];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__ *)o);
+  p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_17___get__(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_25___iter__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__ *)o;
   PyObject_GC_UnTrack(o);
   Py_CLEAR(p->__pyx_v_self);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_17___get__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_17___get__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_17___get__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *)o);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_25___iter__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_25___iter__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_25___iter__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__ *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_17___get__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_25___iter__(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *)o;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__ *)o;
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_17___get__(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_25___iter__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__ *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *)o;
   tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_HypergraphNode *)Py_None); Py_INCREF(Py_None);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_CandidateSet *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_17___get__ = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_25___iter__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_25___iter__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_17___get__"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_25___iter__"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25___iter__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_17___get__, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_25___iter__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -26129,13 +25725,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_17___get__ = {
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_17___get__, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_17___get__, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_25___iter__, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_25___iter__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_25___iter__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -26145,7 +25741,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_17___get__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_17___get__, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_25___iter__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -26157,63 +25753,88 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_17___get__ = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___iter__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_18___iter__[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_18___iter__ = 0;
-
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_18___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec_Decoder(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec_Decoder *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_18___iter__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___iter__)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_18___iter__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_18___iter__];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___iter__));
-    (void) PyObject_INIT(o, t);
-    PyObject_GC_Track(o);
-  } else {
-    o = (*t->tp_alloc)(t, 0);
-    if (unlikely(!o)) return 0;
-  }
+  o = (*t->tp_alloc)(t, 0);
+  if (unlikely(!o)) return 0;
+  p = ((struct __pyx_obj_4cdec_5_cdec_Decoder *)o);
+  p->weights = ((struct __pyx_obj_4cdec_5_cdec_DenseVector *)Py_None); Py_INCREF(Py_None);
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_18___iter__(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___iter__ *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec_Decoder(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec_Decoder *p = (struct __pyx_obj_4cdec_5_cdec_Decoder *)o;
   PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->__pyx_v_self);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_18___iter__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___iter__))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_18___iter__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_18___iter__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___iter__ *)o);
-  } else {
-    (*Py_TYPE(o)->tp_free)(o);
+  {
+    PyObject *etype, *eval, *etb;
+    PyErr_Fetch(&etype, &eval, &etb);
+    ++Py_REFCNT(o);
+    __pyx_pw_4cdec_5_cdec_7Decoder_3__dealloc__(o);
+    if (PyErr_Occurred()) PyErr_WriteUnraisable(o);
+    --Py_REFCNT(o);
+    PyErr_Restore(etype, eval, etb);
   }
+  Py_CLEAR(p->weights);
+  (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_18___iter__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec_Decoder(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___iter__ *)o;
-  if (p->__pyx_v_self) {
-    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
+  struct __pyx_obj_4cdec_5_cdec_Decoder *p = (struct __pyx_obj_4cdec_5_cdec_Decoder *)o;
+  if (p->weights) {
+    e = (*v)(((PyObject*)p->weights), a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_18___iter__(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec_Decoder(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec_Decoder *p = (struct __pyx_obj_4cdec_5_cdec_Decoder *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___iter__ *)o;
-  tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Lattice *)Py_None); Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->weights);
+  p->weights = ((struct __pyx_obj_4cdec_5_cdec_DenseVector *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_18___iter__ = {
+static PyObject *__pyx_getprop_4cdec_5_cdec_7Decoder_weights(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_7Decoder_7weights_1__get__(o);
+}
+
+static int __pyx_setprop_4cdec_5_cdec_7Decoder_weights(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_4cdec_5_cdec_7Decoder_7weights_3__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
+}
+
+static PyObject *__pyx_getprop_4cdec_5_cdec_7Decoder_formalism(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_4cdec_5_cdec_7Decoder_9formalism_1__get__(o);
+}
+
+static PyMethodDef __pyx_methods_4cdec_5_cdec_Decoder[] = {
+  {__Pyx_NAMESTR("read_weights"), (PyCFunction)__pyx_pw_4cdec_5_cdec_7Decoder_5read_weights, METH_O, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_7Decoder_4read_weights)},
+  {__Pyx_NAMESTR("translate"), (PyCFunction)__pyx_pw_4cdec_5_cdec_7Decoder_7translate, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(__pyx_doc_4cdec_5_cdec_7Decoder_6translate)},
+  {0, 0, 0, 0}
+};
+
+static struct PyGetSetDef __pyx_getsets_4cdec_5_cdec_Decoder[] = {
+  {(char *)"weights", __pyx_getprop_4cdec_5_cdec_7Decoder_weights, __pyx_setprop_4cdec_5_cdec_7Decoder_weights, 0, 0},
+  {(char *)"formalism", __pyx_getprop_4cdec_5_cdec_7Decoder_formalism, 0, 0, 0},
+  {0, 0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec_Decoder = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_18___iter__"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_18___iter__), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.Decoder"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec_Decoder), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_18___iter__, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec_Decoder, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -26232,25 +25853,25 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_18___iter__ = {
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_18___iter__, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_18___iter__, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec_Decoder, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec_Decoder, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec_Decoder, /*tp_methods*/
   0, /*tp_members*/
-  0, /*tp_getset*/
+  __pyx_getsets_4cdec_5_cdec_Decoder, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
   0, /*tp_descr_set*/
   0, /*tp_dictoffset*/
-  0, /*tp_init*/
+  __pyx_pw_4cdec_5_cdec_7Decoder_1__init__, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_18___iter__, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec_Decoder, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -26262,63 +25883,67 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_18___iter__ = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19_todot *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_19_todot[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_19_todot = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct____iter__[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct____iter__ = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_19_todot(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct____iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_19_todot > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19_todot)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_19_todot[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_19_todot];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19_todot));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct____iter__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct____iter__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct____iter__];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *)o);
+  p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_19_todot(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19_todot *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19_todot *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct____iter__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *)o;
   PyObject_GC_UnTrack(o);
   Py_CLEAR(p->__pyx_v_self);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_19_todot < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19_todot))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_19_todot[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_19_todot++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19_todot *)o);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct____iter__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct____iter__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct____iter__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_19_todot(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct____iter__(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19_todot *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19_todot *)o;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *)o;
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_19_todot(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct____iter__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__ *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19_todot *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19_todot *)o;
   tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Lattice *)Py_None); Py_INCREF(Py_None);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_DenseVector *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_19_todot = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct____iter__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct____iter__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_19_todot"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19_todot), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct____iter__"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct____iter__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_19_todot, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct____iter__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -26339,13 +25964,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_19_todot = {
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_19_todot, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_19_todot, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct____iter__, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct____iter__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct____iter__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -26355,7 +25980,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_19_todot = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_19_todot, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct____iter__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -26367,105 +25992,67 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_19_todot = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20_lines *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_20_lines[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_20_lines = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14_sample *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_14_sample[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_14_sample = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_20_lines(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_14_sample(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14_sample *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_20_lines > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20_lines)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_20_lines[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_20_lines];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20_lines));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_14_sample > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14_sample)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_14_sample[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_14_sample];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14_sample));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14_sample *)o);
+  p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_20_lines(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20_lines *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20_lines *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_14_sample(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14_sample *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14_sample *)o;
   PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->__pyx_outer_scope);
-  Py_CLEAR(p->__pyx_v_delta);
-  Py_CLEAR(p->__pyx_v_i);
-  Py_CLEAR(p->__pyx_v_label);
-  Py_CLEAR(p->__pyx_v_weight);
-  Py_CLEAR(p->__pyx_t_1);
-  Py_CLEAR(p->__pyx_t_3);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_20_lines < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20_lines))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_20_lines[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_20_lines++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20_lines *)o);
+  Py_CLEAR(p->__pyx_v_self);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_14_sample < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14_sample))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_14_sample[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_14_sample++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14_sample *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_20_lines(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_14_sample(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20_lines *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20_lines *)o;
-  if (p->__pyx_outer_scope) {
-    e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
-  }
-  if (p->__pyx_v_delta) {
-    e = (*v)(p->__pyx_v_delta, a); if (e) return e;
-  }
-  if (p->__pyx_v_i) {
-    e = (*v)(p->__pyx_v_i, a); if (e) return e;
-  }
-  if (p->__pyx_v_label) {
-    e = (*v)(p->__pyx_v_label, a); if (e) return e;
-  }
-  if (p->__pyx_v_weight) {
-    e = (*v)(p->__pyx_v_weight, a); if (e) return e;
-  }
-  if (p->__pyx_t_1) {
-    e = (*v)(p->__pyx_t_1, a); if (e) return e;
-  }
-  if (p->__pyx_t_3) {
-    e = (*v)(p->__pyx_t_3, a); if (e) return e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14_sample *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14_sample *)o;
+  if (p->__pyx_v_self) {
+    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_20_lines(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_14_sample(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14_sample *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14_sample *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20_lines *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20_lines *)o;
-  tmp = ((PyObject*)p->__pyx_outer_scope);
-  p->__pyx_outer_scope = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_19_todot *)Py_None); Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_delta);
-  p->__pyx_v_delta = Py_None; Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_i);
-  p->__pyx_v_i = Py_None; Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_label);
-  p->__pyx_v_label = Py_None; Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_weight);
-  p->__pyx_v_weight = Py_None; Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_t_1);
-  p->__pyx_t_1 = Py_None; Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_t_3);
-  p->__pyx_t_3 = Py_None; Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_20_lines = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_14_sample[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_14_sample = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_20_lines"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_20_lines), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_14_sample"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_14_sample), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_20_lines, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_14_sample, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -26486,13 +26073,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_20_lines = {
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_20_lines, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_20_lines, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_14_sample, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_14_sample, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_14_sample, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -26502,7 +26089,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_20_lines = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_20_lines, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_14_sample, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -26514,63 +26101,67 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_20_lines = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_21___iter__[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_21___iter__ = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_17___get__[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_17___get__ = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_21___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_17___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_21___iter__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_21___iter__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_21___iter__];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_17___get__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_17___get__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_17___get__];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *)o);
+  p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_21___iter__(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_17___get__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *)o;
   PyObject_GC_UnTrack(o);
   Py_CLEAR(p->__pyx_v_self);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_21___iter__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_21___iter__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_21___iter__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *)o);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_17___get__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_17___get__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_17___get__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_21___iter__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_17___get__(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *)o;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *)o;
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_21___iter__(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_17___get__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__ *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__ *)o;
   tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_SufficientStats *)Py_None); Py_INCREF(Py_None);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_21___iter__ = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_17___get__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_17___get__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_21___iter__"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_21___iter__), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_17___get__"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_17___get__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_21___iter__, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_17___get__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -26591,13 +26182,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_21___iter__ = {
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_21___iter__, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_21___iter__, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_17___get__, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_17___get__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_17___get__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -26607,7 +26198,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_21___iter__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_21___iter__, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_17___get__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -26619,63 +26210,83 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_21___iter__ = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_22___iter__[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_22___iter__ = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_6_genexpr[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_6_genexpr = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_22___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_6_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_22___iter__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_22___iter__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_22___iter__];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_6_genexpr > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_6_genexpr[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_6_genexpr];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *)o);
+  p->__pyx_outer_scope = 0;
+  p->__pyx_v_feat = 0;
+  p->__pyx_t_0 = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_22___iter__(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__ *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_6_genexpr(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *)o;
   PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->__pyx_v_self);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_22___iter__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_22___iter__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_22___iter__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__ *)o);
+  Py_CLEAR(p->__pyx_outer_scope);
+  Py_CLEAR(p->__pyx_v_feat);
+  Py_CLEAR(p->__pyx_t_0);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_6_genexpr < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_6_genexpr[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_6_genexpr++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_22___iter__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_6_genexpr(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__ *)o;
-  if (p->__pyx_v_self) {
-    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *)o;
+  if (p->__pyx_outer_scope) {
+    e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
+  }
+  if (p->__pyx_v_feat) {
+    e = (*v)(p->__pyx_v_feat, a); if (e) return e;
+  }
+  if (p->__pyx_t_0) {
+    e = (*v)(p->__pyx_t_0, a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_22___iter__(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_6_genexpr(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__ *)o;
-  tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_CandidateSet *)Py_None); Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_outer_scope);
+  p->__pyx_outer_scope = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_5___str__ *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_feat);
+  p->__pyx_v_feat = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_t_0);
+  p->__pyx_t_0 = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_22___iter__ = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_6_genexpr[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_6_genexpr = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_22___iter__"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_22___iter__), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_6_genexpr"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_6_genexpr), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_22___iter__, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_6_genexpr, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -26696,13 +26307,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_22___iter__ = {
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_22___iter__, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_22___iter__, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_6_genexpr, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_6_genexpr, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_6_genexpr, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -26712,7 +26323,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_22___iter__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_22___iter__, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_6_genexpr, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -26724,105 +26335,91 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_22___iter__ = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23__make_config *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_23__make_config[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_23__make_config = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_23__make_config(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_23__make_config > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23__make_config)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_23__make_config[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_23__make_config];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23__make_config));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees *)o);
+  p->__pyx_v_e_tree = 0;
+  p->__pyx_v_f_tree = 0;
+  p->__pyx_v_self = 0;
+  p->__pyx_v_size = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_23__make_config(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23__make_config *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23__make_config *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees *)o;
   PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->__pyx_v_config);
-  Py_CLEAR(p->__pyx_v_info);
-  Py_CLEAR(p->__pyx_v_key);
-  Py_CLEAR(p->__pyx_v_name);
-  Py_CLEAR(p->__pyx_v_value);
-  Py_CLEAR(p->__pyx_t_0);
-  Py_CLEAR(p->__pyx_t_1);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_23__make_config < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23__make_config))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_23__make_config[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_23__make_config++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23__make_config *)o);
+  Py_CLEAR(p->__pyx_v_e_tree);
+  Py_CLEAR(p->__pyx_v_f_tree);
+  Py_CLEAR(p->__pyx_v_self);
+  Py_CLEAR(p->__pyx_v_size);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_23__make_config(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23__make_config *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23__make_config *)o;
-  if (p->__pyx_v_config) {
-    e = (*v)(p->__pyx_v_config, a); if (e) return e;
-  }
-  if (p->__pyx_v_info) {
-    e = (*v)(p->__pyx_v_info, a); if (e) return e;
-  }
-  if (p->__pyx_v_key) {
-    e = (*v)(p->__pyx_v_key, a); if (e) return e;
-  }
-  if (p->__pyx_v_name) {
-    e = (*v)(p->__pyx_v_name, a); if (e) return e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees *)o;
+  if (p->__pyx_v_e_tree) {
+    e = (*v)(p->__pyx_v_e_tree, a); if (e) return e;
   }
-  if (p->__pyx_v_value) {
-    e = (*v)(p->__pyx_v_value, a); if (e) return e;
+  if (p->__pyx_v_f_tree) {
+    e = (*v)(p->__pyx_v_f_tree, a); if (e) return e;
   }
-  if (p->__pyx_t_0) {
-    e = (*v)(p->__pyx_t_0, a); if (e) return e;
+  if (p->__pyx_v_self) {
+    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
-  if (p->__pyx_t_1) {
-    e = (*v)(p->__pyx_t_1, a); if (e) return e;
+  if (p->__pyx_v_size) {
+    e = (*v)(p->__pyx_v_size, a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_23__make_config(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23__make_config *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23__make_config *)o;
-  tmp = ((PyObject*)p->__pyx_v_config);
-  p->__pyx_v_config = Py_None; Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_info);
-  p->__pyx_v_info = Py_None; Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_key);
-  p->__pyx_v_key = Py_None; Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_v_e_tree);
+  p->__pyx_v_e_tree = ((PyObject*)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_name);
-  p->__pyx_v_name = Py_None; Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_value);
-  p->__pyx_v_value = Py_None; Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_v_f_tree);
+  p->__pyx_v_f_tree = ((PyObject*)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_t_0);
-  p->__pyx_t_0 = Py_None; Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_t_1);
-  p->__pyx_t_1 = Py_None; Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_v_size);
+  p->__pyx_v_size = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_23__make_config = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_23__make_config"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_23__make_config), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_12_unique_kbest_trees"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_23__make_config, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -26843,13 +26440,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_23__make_config =
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_23__make_config, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_23__make_config, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -26859,7 +26456,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_23__make_config =
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_23__make_config, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_12_unique_kbest_trees, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -26871,63 +26468,67 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_23__make_config =
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___init__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_24___init__[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_24___init__ = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_4___get__[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_4___get__ = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_24___init__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_4___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_24___init__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___init__)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_24___init__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_24___init__];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___init__));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_4___get__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_4___get__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_4___get__];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *)o);
+  p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_24___init__(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___init__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___init__ *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_4___get__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *)o;
   PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->__pyx_v_config);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_24___init__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___init__))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_24___init__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_24___init__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___init__ *)o);
+  Py_CLEAR(p->__pyx_v_self);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_4___get__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_4___get__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_4___get__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_24___init__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_4___get__(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___init__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___init__ *)o;
-  if (p->__pyx_v_config) {
-    e = (*v)(p->__pyx_v_config, a); if (e) return e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *)o;
+  if (p->__pyx_v_self) {
+    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_24___init__(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_4___get__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__ *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___init__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___init__ *)o;
-  tmp = ((PyObject*)p->__pyx_v_config);
-  p->__pyx_v_config = ((PyObject*)Py_None); Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_TRule *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_24___init__ = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_4___get__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_4___get__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_24___init__"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___init__), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_4___get__"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_4___get__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_24___init__, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_4___get__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -26948,13 +26549,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_24___init__ = {
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_24___init__, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_24___init__, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_4___get__, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_4___get__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_4___get__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -26964,7 +26565,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_24___init__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_24___init__, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_4___get__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -26976,77 +26577,67 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_24___init__ = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
-static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25_genexpr *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_25_genexpr[8];
-static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_25_genexpr = 0;
+static struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_1___iter__[8];
+static int __pyx_freecount_4cdec_5_cdec___pyx_scope_struct_1___iter__ = 0;
 
-static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_25_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_1___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *p;
   PyObject *o;
-  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_25_genexpr > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25_genexpr)))) {
-    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_25_genexpr[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_25_genexpr];
-    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25_genexpr));
-    (void) PyObject_INIT(o, t);
+  if (likely((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_1___iter__ > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__)))) {
+    o = (PyObject*)__pyx_freelist_4cdec_5_cdec___pyx_scope_struct_1___iter__[--__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_1___iter__];
+    memset(o, 0, sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__));
+    PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
     o = (*t->tp_alloc)(t, 0);
     if (unlikely(!o)) return 0;
   }
+  p = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *)o);
+  p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_25_genexpr(PyObject *o) {
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25_genexpr *)o;
+static void __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_1___iter__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *)o;
   PyObject_GC_UnTrack(o);
-  Py_CLEAR(p->__pyx_outer_scope);
-  Py_CLEAR(p->__pyx_v_kv);
-  Py_CLEAR(p->__pyx_t_0);
-  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_25_genexpr < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25_genexpr))) {
-    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_25_genexpr[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_25_genexpr++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25_genexpr *)o);
+  Py_CLEAR(p->__pyx_v_self);
+  if ((__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_1___iter__ < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__))) {
+    __pyx_freelist_4cdec_5_cdec___pyx_scope_struct_1___iter__[__pyx_freecount_4cdec_5_cdec___pyx_scope_struct_1___iter__++] = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_25_genexpr(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_1___iter__(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25_genexpr *)o;
-  if (p->__pyx_outer_scope) {
-    e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
-  }
-  if (p->__pyx_v_kv) {
-    e = (*v)(p->__pyx_v_kv, a); if (e) return e;
-  }
-  if (p->__pyx_t_0) {
-    e = (*v)(p->__pyx_t_0, a); if (e) return e;
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *)o;
+  if (p->__pyx_v_self) {
+    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_25_genexpr(PyObject *o) {
+static int __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_1___iter__(PyObject *o) {
+  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__ *)o;
   PyObject* tmp;
-  struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25_genexpr *p = (struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25_genexpr *)o;
-  tmp = ((PyObject*)p->__pyx_outer_scope);
-  p->__pyx_outer_scope = ((struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_24___init__ *)Py_None); Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_kv);
-  p->__pyx_v_kv = Py_None; Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_t_0);
-  p->__pyx_t_0 = Py_None; Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_4cdec_5_cdec_SparseVector *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_25_genexpr = {
+static PyMethodDef __pyx_methods_4cdec_5_cdec___pyx_scope_struct_1___iter__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_1___iter__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_25_genexpr"), /*tp_name*/
-  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_25_genexpr), /*tp_basicsize*/
+  __Pyx_NAMESTR("cdec._cdec.__pyx_scope_struct_1___iter__"), /*tp_name*/
+  sizeof(struct __pyx_obj_4cdec_5_cdec___pyx_scope_struct_1___iter__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_25_genexpr, /*tp_dealloc*/
+  __pyx_tp_dealloc_4cdec_5_cdec___pyx_scope_struct_1___iter__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -27067,13 +26658,13 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_25_genexpr = {
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_25_genexpr, /*tp_traverse*/
-  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_25_genexpr, /*tp_clear*/
+  __pyx_tp_traverse_4cdec_5_cdec___pyx_scope_struct_1___iter__, /*tp_traverse*/
+  __pyx_tp_clear_4cdec_5_cdec___pyx_scope_struct_1___iter__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  0, /*tp_methods*/
+  __pyx_methods_4cdec_5_cdec___pyx_scope_struct_1___iter__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -27083,7 +26674,7 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_25_genexpr = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_25_genexpr, /*tp_new*/
+  __pyx_tp_new_4cdec_5_cdec___pyx_scope_struct_1___iter__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -27095,9 +26686,6 @@ static PyTypeObject __pyx_type_4cdec_5_cdec___pyx_scope_struct_25_genexpr = {
   #if PY_VERSION_HEX >= 0x02060000
   0, /*tp_version_tag*/
   #endif
-  #if PY_VERSION_HEX >= 0x030400a1
-  0, /*tp_finalize*/
-  #endif
 };
 
 static PyMethodDef __pyx_methods[] = {
@@ -27123,165 +26711,163 @@ static struct PyModuleDef __pyx_moduledef = {
 #endif
 
 static __Pyx_StringTabEntry __pyx_string_tab[] = {
-  {&__pyx_n_s_BLEU, __pyx_k_BLEU, sizeof(__pyx_k_BLEU), 0, 0, 1, 1},
-  {&__pyx_n_s_CER, __pyx_k_CER, sizeof(__pyx_k_CER), 0, 0, 1, 1},
-  {&__pyx_kp_s_Cannot_translate_input_type_s, __pyx_k_Cannot_translate_input_type_s, sizeof(__pyx_k_Cannot_translate_input_type_s), 0, 0, 1, 0},
-  {&__pyx_n_s_Exception, __pyx_k_Exception, sizeof(__pyx_k_Exception), 0, 0, 1, 1},
-  {&__pyx_n_s_IBM_BLEU, __pyx_k_IBM_BLEU, sizeof(__pyx_k_IBM_BLEU), 0, 0, 1, 1},
-  {&__pyx_n_s_IndexError, __pyx_k_IndexError, sizeof(__pyx_k_IndexError), 0, 0, 1, 1},
-  {&__pyx_n_s_InvalidConfig, __pyx_k_InvalidConfig, sizeof(__pyx_k_InvalidConfig), 0, 0, 1, 1},
-  {&__pyx_n_s_KeyError, __pyx_k_KeyError, sizeof(__pyx_k_KeyError), 0, 0, 1, 1},
-  {&__pyx_n_s_NotImplemented, __pyx_k_NotImplemented, sizeof(__pyx_k_NotImplemented), 0, 0, 1, 1},
-  {&__pyx_n_s_ParseFailed, __pyx_k_ParseFailed, sizeof(__pyx_k_ParseFailed), 0, 0, 1, 1},
-  {&__pyx_n_s_QCRI, __pyx_k_QCRI, sizeof(__pyx_k_QCRI), 0, 0, 1, 1},
-  {&__pyx_n_s_QCRI_BLEU, __pyx_k_QCRI_BLEU, sizeof(__pyx_k_QCRI_BLEU), 0, 0, 1, 1},
-  {&__pyx_n_s_SSK, __pyx_k_SSK, sizeof(__pyx_k_SSK), 0, 0, 1, 1},
-  {&__pyx_n_s_TER, __pyx_k_TER, sizeof(__pyx_k_TER), 0, 0, 1, 1},
-  {&__pyx_n_s_TypeError, __pyx_k_TypeError, sizeof(__pyx_k_TypeError), 0, 0, 1, 1},
-  {&__pyx_n_s_ValueError, __pyx_k_ValueError, sizeof(__pyx_k_ValueError), 0, 0, 1, 1},
-  {&__pyx_kp_s__10, __pyx_k__10, sizeof(__pyx_k__10), 0, 0, 1, 0},
-  {&__pyx_kp_s__11, __pyx_k__11, sizeof(__pyx_k__11), 0, 0, 1, 0},
-  {&__pyx_kp_s__13, __pyx_k__13, sizeof(__pyx_k__13), 0, 0, 1, 0},
-  {&__pyx_kp_s__16, __pyx_k__16, sizeof(__pyx_k__16), 0, 0, 1, 0},
-  {&__pyx_kp_s__20, __pyx_k__20, sizeof(__pyx_k__20), 0, 0, 1, 0},
-  {&__pyx_n_s__23, __pyx_k__23, sizeof(__pyx_k__23), 0, 0, 1, 1},
-  {&__pyx_kp_s__4, __pyx_k__4, sizeof(__pyx_k__4), 0, 0, 1, 0},
-  {&__pyx_n_s_a, __pyx_k_a, sizeof(__pyx_k_a), 0, 0, 1, 1},
-  {&__pyx_n_s_alignments, __pyx_k_alignments, sizeof(__pyx_k_alignments), 0, 0, 1, 1},
-  {&__pyx_n_s_append, __pyx_k_append, sizeof(__pyx_k_append), 0, 0, 1, 1},
-  {&__pyx_n_s_args, __pyx_k_args, sizeof(__pyx_k_args), 0, 0, 1, 1},
-  {&__pyx_n_s_beam_alpha, __pyx_k_beam_alpha, sizeof(__pyx_k_beam_alpha), 0, 0, 1, 1},
-  {&__pyx_kp_s_candidate_set_index_out_of_range, __pyx_k_candidate_set_index_out_of_range, sizeof(__pyx_k_candidate_set_index_out_of_range), 0, 0, 1, 0},
-  {&__pyx_kp_s_cannot_create_lattice_from_s, __pyx_k_cannot_create_lattice_from_s, sizeof(__pyx_k_cannot_create_lattice_from_s), 0, 0, 1, 0},
-  {&__pyx_kp_s_cannot_initialize_weights_with_s, __pyx_k_cannot_initialize_weights_with_s, sizeof(__pyx_k_cannot_initialize_weights_with_s), 0, 0, 1, 0},
-  {&__pyx_kp_s_cannot_intersect_hypergraph_with, __pyx_k_cannot_intersect_hypergraph_with, sizeof(__pyx_k_cannot_intersect_hypergraph_with), 0, 0, 1, 0},
-  {&__pyx_kp_s_cannot_reweight_hypergraph_with, __pyx_k_cannot_reweight_hypergraph_with, sizeof(__pyx_k_cannot_reweight_hypergraph_with), 0, 0, 1, 0},
-  {&__pyx_kp_s_cannot_take_the_dot_product_of_s, __pyx_k_cannot_take_the_dot_product_of_s, sizeof(__pyx_k_cannot_take_the_dot_product_of_s), 0, 0, 1, 0},
-  {&__pyx_n_s_cat, __pyx_k_cat, sizeof(__pyx_k_cat), 0, 0, 1, 1},
-  {&__pyx_n_s_cdec__cdec, __pyx_k_cdec__cdec, sizeof(__pyx_k_cdec__cdec), 0, 0, 1, 1},
-  {&__pyx_n_s_cdec_sa__sa, __pyx_k_cdec_sa__sa, sizeof(__pyx_k_cdec_sa__sa), 0, 0, 1, 1},
-  {&__pyx_n_s_class, __pyx_k_class, sizeof(__pyx_k_class), 0, 0, 1, 1},
-  {&__pyx_n_s_close, __pyx_k_close, sizeof(__pyx_k_close), 0, 0, 1, 1},
-  {&__pyx_kp_s_comparison_not_implemented_for_H, __pyx_k_comparison_not_implemented_for_H, sizeof(__pyx_k_comparison_not_implemented_for_H), 0, 0, 1, 0},
-  {&__pyx_kp_s_comparison_not_implemented_for_H_2, __pyx_k_comparison_not_implemented_for_H_2, sizeof(__pyx_k_comparison_not_implemented_for_H_2), 0, 0, 1, 0},
-  {&__pyx_kp_s_comparison_not_implemented_for_S, __pyx_k_comparison_not_implemented_for_S, sizeof(__pyx_k_comparison_not_implemented_for_S), 0, 0, 1, 0},
-  {&__pyx_n_s_config, __pyx_k_config, sizeof(__pyx_k_config), 0, 0, 1, 1},
-  {&__pyx_n_s_config_str, __pyx_k_config_str, sizeof(__pyx_k_config_str), 0, 0, 1, 1},
-  {&__pyx_n_s_csplit, __pyx_k_csplit, sizeof(__pyx_k_csplit), 0, 0, 1, 1},
-  {&__pyx_n_s_csplit_preserve_full_word, __pyx_k_csplit_preserve_full_word, sizeof(__pyx_k_csplit_preserve_full_word), 0, 0, 1, 1},
-  {&__pyx_kp_s_d, __pyx_k_d, sizeof(__pyx_k_d), 0, 0, 1, 0},
-  {&__pyx_kp_s_d_d_label_s, __pyx_k_d_d_label_s, sizeof(__pyx_k_d_d_label_s), 0, 0, 1, 0},
-  {&__pyx_kp_s_d_shape_doublecircle, __pyx_k_d_shape_doublecircle, sizeof(__pyx_k_d_shape_doublecircle), 0, 0, 1, 0},
-  {&__pyx_n_s_delta, __pyx_k_delta, sizeof(__pyx_k_delta), 0, 0, 1, 1},
-  {&__pyx_n_s_density, __pyx_k_density, sizeof(__pyx_k_density), 0, 0, 1, 1},
-  {&__pyx_n_s_dict, __pyx_k_dict, sizeof(__pyx_k_dict), 0, 0, 1, 1},
-  {&__pyx_kp_s_digraph_lattice, __pyx_k_digraph_lattice, sizeof(__pyx_k_digraph_lattice), 0, 0, 1, 0},
-  {&__pyx_n_s_doc, __pyx_k_doc, sizeof(__pyx_k_doc), 0, 0, 1, 1},
-  {&__pyx_n_s_dot, __pyx_k_dot, sizeof(__pyx_k_dot), 0, 0, 1, 1},
-  {&__pyx_n_s_e, __pyx_k_e, sizeof(__pyx_k_e), 0, 0, 1, 1},
-  {&__pyx_n_s_encode, __pyx_k_encode, sizeof(__pyx_k_encode), 0, 0, 1, 1},
-  {&__pyx_n_s_encoding, __pyx_k_encoding, sizeof(__pyx_k_encoding), 0, 0, 1, 1},
-  {&__pyx_n_s_enter, __pyx_k_enter, sizeof(__pyx_k_enter), 0, 0, 1, 1},
-  {&__pyx_n_s_enumerate, __pyx_k_enumerate, sizeof(__pyx_k_enumerate), 0, 0, 1, 1},
-  {&__pyx_n_s_eval, __pyx_k_eval, sizeof(__pyx_k_eval), 0, 0, 1, 1},
-  {&__pyx_n_s_evaluate, __pyx_k_evaluate, sizeof(__pyx_k_evaluate), 0, 0, 1, 1},
-  {&__pyx_n_s_evaluator, __pyx_k_evaluator, sizeof(__pyx_k_evaluator), 0, 0, 1, 1},
-  {&__pyx_n_s_exit, __pyx_k_exit, sizeof(__pyx_k_exit), 0, 0, 1, 1},
-  {&__pyx_n_s_f, __pyx_k_f, sizeof(__pyx_k_f), 0, 0, 1, 1},
-  {&__pyx_n_s_formalism, __pyx_k_formalism, sizeof(__pyx_k_formalism), 0, 0, 1, 1},
-  {&__pyx_kp_s_formalism_s_unknown, __pyx_k_formalism_s_unknown, sizeof(__pyx_k_formalism_s_unknown), 0, 0, 1, 0},
-  {&__pyx_n_s_format, __pyx_k_format, sizeof(__pyx_k_format), 0, 0, 1, 1},
-  {&__pyx_n_s_fst, __pyx_k_fst, sizeof(__pyx_k_fst), 0, 0, 1, 1},
-  {&__pyx_n_s_genexpr, __pyx_k_genexpr, sizeof(__pyx_k_genexpr), 0, 0, 1, 1},
-  {&__pyx_n_s_get, __pyx_k_get, sizeof(__pyx_k_get), 0, 0, 1, 1},
-  {&__pyx_n_s_grammar, __pyx_k_grammar, sizeof(__pyx_k_grammar), 0, 0, 1, 1},
-  {&__pyx_n_s_hyp, __pyx_k_hyp, sizeof(__pyx_k_hyp), 0, 0, 1, 1},
-  {&__pyx_n_s_hypergraph, __pyx_k_hypergraph, sizeof(__pyx_k_hypergraph), 0, 0, 1, 1},
-  {&__pyx_n_s_i, __pyx_k_i, sizeof(__pyx_k_i), 0, 0, 1, 1},
-  {&__pyx_n_s_import, __pyx_k_import, sizeof(__pyx_k_import), 0, 0, 1, 1},
-  {&__pyx_n_s_in_edges, __pyx_k_in_edges, sizeof(__pyx_k_in_edges), 0, 0, 1, 1},
-  {&__pyx_n_s_info, __pyx_k_info, sizeof(__pyx_k_info), 0, 0, 1, 1},
-  {&__pyx_n_s_init, __pyx_k_init, sizeof(__pyx_k_init), 0, 0, 1, 1},
-  {&__pyx_n_s_inp, __pyx_k_inp, sizeof(__pyx_k_inp), 0, 0, 1, 1},
-  {&__pyx_n_s_items, __pyx_k_items, sizeof(__pyx_k_items), 0, 0, 1, 1},
-  {&__pyx_n_s_join, __pyx_k_join, sizeof(__pyx_k_join), 0, 0, 1, 1},
-  {&__pyx_n_s_k, __pyx_k_k, sizeof(__pyx_k_k), 0, 0, 1, 1},
-  {&__pyx_n_s_key, __pyx_k_key, sizeof(__pyx_k_key), 0, 0, 1, 1},
-  {&__pyx_n_s_label, __pyx_k_label, sizeof(__pyx_k_label), 0, 0, 1, 1},
-  {&__pyx_kp_s_lattice_index_out_of_range, __pyx_k_lattice_index_out_of_range, sizeof(__pyx_k_lattice_index_out_of_range), 0, 0, 1, 0},
-  {&__pyx_n_s_lexalign, __pyx_k_lexalign, sizeof(__pyx_k_lexalign), 0, 0, 1, 1},
-  {&__pyx_n_s_lextrans, __pyx_k_lextrans, sizeof(__pyx_k_lextrans), 0, 0, 1, 1},
-  {&__pyx_n_s_lhs, __pyx_k_lhs, sizeof(__pyx_k_lhs), 0, 0, 1, 1},
-  {&__pyx_n_s_lines, __pyx_k_lines, sizeof(__pyx_k_lines), 0, 0, 1, 1},
-  {&__pyx_n_s_main, __pyx_k_main, sizeof(__pyx_k_main), 0, 0, 1, 1},
-  {&__pyx_n_s_make_config, __pyx_k_make_config, sizeof(__pyx_k_make_config), 0, 0, 1, 1},
-  {&__pyx_n_s_metaclass, __pyx_k_metaclass, sizeof(__pyx_k_metaclass), 0, 0, 1, 1},
-  {&__pyx_n_s_module, __pyx_k_module, sizeof(__pyx_k_module), 0, 0, 1, 1},
-  {&__pyx_n_s_name, __pyx_k_name, sizeof(__pyx_k_name), 0, 0, 1, 1},
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+  __pyx_builtin_super = __Pyx_GetBuiltinName(__pyx_n_s__super); if (!__pyx_builtin_super) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 197; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __Pyx_GOTREF(__pyx_tuple_);
-  __Pyx_GIVEREF(__pyx_tuple_);
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+  __Pyx_GOTREF(__pyx_k_tuple_2);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_2));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/vectors.pxi":95
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-  __Pyx_GOTREF(__pyx_tuple__2);
-  __Pyx_GIVEREF(__pyx_tuple__2);
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+  __Pyx_GOTREF(__pyx_k_tuple_5);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_5));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":6
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":6
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-  __Pyx_GOTREF(__pyx_tuple__3);
-  __Pyx_GIVEREF(__pyx_tuple__3);
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+  __Pyx_GOTREF(__pyx_k_tuple_6);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_6));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":232
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":232
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-  __Pyx_GOTREF(__pyx_tuple__5);
-  __Pyx_GIVEREF(__pyx_tuple__5);
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+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_14));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":244
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":292
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-  __Pyx_GOTREF(__pyx_tuple__6);
-  __Pyx_GIVEREF(__pyx_tuple__6);
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+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_19));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/hypergraph.pxi":285
+  /* "/usr0/home/austinma/git/cdec/python/cdec/hypergraph.pxi":333
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-  __Pyx_GOTREF(__pyx_tuple__7);
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+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_21));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":26
+  /* "/usr0/home/austinma/git/cdec/python/cdec/lattice.pxi":26
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-  __Pyx_GOTREF(__pyx_tuple__8);
-  __Pyx_GIVEREF(__pyx_tuple__8);
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+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_24));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":39
+  /* "/usr0/home/austinma/git/cdec/python/cdec/lattice.pxi":39
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-  __Pyx_GOTREF(__pyx_tuple__9);
-  __Pyx_GIVEREF(__pyx_tuple__9);
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+  __Pyx_GOTREF(__pyx_k_tuple_25);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_25));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":69
+  /* "/usr0/home/austinma/git/cdec/python/cdec/lattice.pxi":69
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-  __Pyx_GOTREF(__pyx_tuple__12);
-  __Pyx_GIVEREF(__pyx_tuple__12);
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+  __Pyx_GOTREF(__pyx_k_tuple_32);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_32));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":63
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+  __Pyx_GOTREF(__pyx_k_tuple_35);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_35));
+  __pyx_k_codeobj_36 = (PyObject*)__Pyx_PyCode_New(0, 0, 4, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_35, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_37, __pyx_n_s__lines, 63, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_36)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/lattice.pxi":72
+  /* "/usr0/home/austinma/git/cdec/python/cdec/lattice.pxi":72
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  *             yield '}'
  *         return '\n'.join(lines()).encode('utf8')             # <<<<<<<<<<<<<<
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-  __pyx_tuple__17 = PyTuple_Pack(1, __pyx_n_s_utf8); if (unlikely(!__pyx_tuple__17)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 72; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_tuple__17);
-  __Pyx_GIVEREF(__pyx_tuple__17);
+  __pyx_k_tuple_41 = PyTuple_Pack(1, ((PyObject *)__pyx_n_s__utf8)); if (unlikely(!__pyx_k_tuple_41)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 72; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_41);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_41));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":50
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":50
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-  __Pyx_GOTREF(__pyx_tuple__18);
-  __Pyx_GIVEREF(__pyx_tuple__18);
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+  __Pyx_GOTREF(__pyx_k_tuple_43);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_43));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":84
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":84
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-  __Pyx_GOTREF(__pyx_tuple__19);
-  __Pyx_GIVEREF(__pyx_tuple__19);
+  __pyx_k_tuple_45 = PyTuple_Pack(1, ((PyObject *)__pyx_kp_s_44)); if (unlikely(!__pyx_k_tuple_45)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 84; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_45);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_45));
 
   /* "cdec/_cdec.pyx":92
  *         with open(weights) as fp:
@@ -27439,9 +27025,9 @@ static int __Pyx_InitCachedConstants(void) {
  *                 fname, value = line.split()
  *                 self.weights[fname.strip()] = float(value)
  */
-  __pyx_tuple__21 = PyTuple_Pack(1, __pyx_kp_s__20); if (unlikely(!__pyx_tuple__21)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 92; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_tuple__21);
-  __Pyx_GIVEREF(__pyx_tuple__21);
+  __pyx_k_tuple_51 = PyTuple_Pack(1, ((PyObject *)__pyx_kp_s_50)); if (unlikely(!__pyx_k_tuple_51)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 92; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_51);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_51));
 
   /* "cdec/_cdec.pyx":90
  *     def read_weights(self, weights):
@@ -27450,73 +27036,73 @@ static int __Pyx_InitCachedConstants(void) {
  *             for line in fp:
  *                 if line.strip().startswith('#'): continue
  */
-  __pyx_tuple__22 = PyTuple_Pack(3, Py_None, Py_None, Py_None); if (unlikely(!__pyx_tuple__22)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 90; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_tuple__22);
-  __Pyx_GIVEREF(__pyx_tuple__22);
+  __pyx_k_tuple_52 = PyTuple_Pack(3, Py_None, Py_None, Py_None); if (unlikely(!__pyx_k_tuple_52)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 90; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_52);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_52));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":5
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":5
  * import cdec.sa._sa as _sa
  * 
  * def _phrase(phrase):             # <<<<<<<<<<<<<<
  *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)
  * 
  */
-  __pyx_tuple__24 = PyTuple_Pack(3, __pyx_n_s_phrase_2, __pyx_n_s_genexpr, __pyx_n_s_genexpr); if (unlikely(!__pyx_tuple__24)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 5; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_tuple__24);
-  __Pyx_GIVEREF(__pyx_tuple__24);
-  __pyx_codeobj__25 = (PyObject*)__Pyx_PyCode_New(1, 0, 3, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_tuple__24, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_usr0_home_cdyer_cdec_python_cde_2, __pyx_n_s_phrase, 5, __pyx_empty_bytes); if (unlikely(!__pyx_codeobj__25)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 5; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_56 = PyTuple_Pack(3, ((PyObject *)__pyx_n_s__phrase), ((PyObject *)__pyx_n_s__genexpr), ((PyObject *)__pyx_n_s__genexpr)); if (unlikely(!__pyx_k_tuple_56)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 5; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_56);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_56));
+  __pyx_k_codeobj_57 = (PyObject*)__Pyx_PyCode_New(1, 0, 3, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_56, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_58, __pyx_n_s___phrase, 5, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_57)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 5; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":194
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":194
  *         return []
  * 
  * BLEU = Scorer('IBM_BLEU')             # <<<<<<<<<<<<<<
  * QCRI = Scorer('QCRI_BLEU')
  * TER = Scorer('TER')
  */
-  __pyx_tuple__26 = PyTuple_Pack(1, __pyx_n_s_IBM_BLEU); if (unlikely(!__pyx_tuple__26)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 194; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_tuple__26);
-  __Pyx_GIVEREF(__pyx_tuple__26);
+  __pyx_k_tuple_59 = PyTuple_Pack(1, ((PyObject *)__pyx_n_s__IBM_BLEU)); if (unlikely(!__pyx_k_tuple_59)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 194; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_59);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_59));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":195
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":195
  * 
  * BLEU = Scorer('IBM_BLEU')
  * QCRI = Scorer('QCRI_BLEU')             # <<<<<<<<<<<<<<
  * TER = Scorer('TER')
  * CER = Scorer('CER')
  */
-  __pyx_tuple__27 = PyTuple_Pack(1, __pyx_n_s_QCRI_BLEU); if (unlikely(!__pyx_tuple__27)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 195; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_tuple__27);
-  __Pyx_GIVEREF(__pyx_tuple__27);
+  __pyx_k_tuple_60 = PyTuple_Pack(1, ((PyObject *)__pyx_n_s__QCRI_BLEU)); if (unlikely(!__pyx_k_tuple_60)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 195; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_60);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_60));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":196
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":196
  * BLEU = Scorer('IBM_BLEU')
  * QCRI = Scorer('QCRI_BLEU')
  * TER = Scorer('TER')             # <<<<<<<<<<<<<<
  * CER = Scorer('CER')
  * SSK = Scorer('SSK')
  */
-  __pyx_tuple__28 = PyTuple_Pack(1, __pyx_n_s_TER); if (unlikely(!__pyx_tuple__28)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 196; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_tuple__28);
-  __Pyx_GIVEREF(__pyx_tuple__28);
+  __pyx_k_tuple_61 = PyTuple_Pack(1, ((PyObject *)__pyx_n_s__TER)); if (unlikely(!__pyx_k_tuple_61)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 196; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_61);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_61));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":197
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":197
  * QCRI = Scorer('QCRI_BLEU')
  * TER = Scorer('TER')
  * CER = Scorer('CER')             # <<<<<<<<<<<<<<
  * SSK = Scorer('SSK')
  */
-  __pyx_tuple__29 = PyTuple_Pack(1, __pyx_n_s_CER); if (unlikely(!__pyx_tuple__29)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 197; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_tuple__29);
-  __Pyx_GIVEREF(__pyx_tuple__29);
+  __pyx_k_tuple_62 = PyTuple_Pack(1, ((PyObject *)__pyx_n_s__CER)); if (unlikely(!__pyx_k_tuple_62)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 197; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_62);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_62));
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":198
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":198
  * TER = Scorer('TER')
  * CER = Scorer('CER')
  * SSK = Scorer('SSK')             # <<<<<<<<<<<<<<
  */
-  __pyx_tuple__30 = PyTuple_Pack(1, __pyx_n_s_SSK); if (unlikely(!__pyx_tuple__30)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 198; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_tuple__30);
-  __Pyx_GIVEREF(__pyx_tuple__30);
+  __pyx_k_tuple_63 = PyTuple_Pack(1, ((PyObject *)__pyx_n_s__SSK)); if (unlikely(!__pyx_k_tuple_63)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 198; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_63);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_63));
 
   /* "cdec/_cdec.pyx":28
  * class ParseFailed(Exception): pass
@@ -27525,10 +27111,10 @@ static int __Pyx_InitCachedConstants(void) {
  *     """set_silent(bool): Configure the verbosity of cdec."""
  *     SetSilent(yn)
  */
-  __pyx_tuple__31 = PyTuple_Pack(1, __pyx_n_s_yn); if (unlikely(!__pyx_tuple__31)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_tuple__31);
-  __Pyx_GIVEREF(__pyx_tuple__31);
-  __pyx_codeobj__32 = (PyObject*)__Pyx_PyCode_New(1, 0, 1, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_tuple__31, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_usr0_home_cdyer_cdec_python_cde_3, __pyx_n_s_set_silent, 28, __pyx_empty_bytes); if (unlikely(!__pyx_codeobj__32)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_64 = PyTuple_Pack(1, ((PyObject *)__pyx_n_s__yn)); if (unlikely(!__pyx_k_tuple_64)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_64);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_64));
+  __pyx_k_codeobj_65 = (PyObject*)__Pyx_PyCode_New(1, 0, 1, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_64, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_66, __pyx_n_s__set_silent, 28, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_65)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
   /* "cdec/_cdec.pyx":32
  *     SetSilent(yn)
@@ -27537,10 +27123,10 @@ static int __Pyx_InitCachedConstants(void) {
  *     for key, value in config.items():
  *         if isinstance(value, dict):
  */
-  __pyx_tuple__33 = PyTuple_Pack(5, __pyx_n_s_config, __pyx_n_s_key, __pyx_n_s_value, __pyx_n_s_name, __pyx_n_s_info); if (unlikely(!__pyx_tuple__33)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_tuple__33);
-  __Pyx_GIVEREF(__pyx_tuple__33);
-  __pyx_codeobj__34 = (PyObject*)__Pyx_PyCode_New(1, 0, 5, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_tuple__33, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_usr0_home_cdyer_cdec_python_cde_3, __pyx_n_s_make_config, 32, __pyx_empty_bytes); if (unlikely(!__pyx_codeobj__34)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_67 = PyTuple_Pack(5, ((PyObject *)__pyx_n_s__config), ((PyObject *)__pyx_n_s__key), ((PyObject *)__pyx_n_s__value), ((PyObject *)__pyx_n_s__name), ((PyObject *)__pyx_n_s__info)); if (unlikely(!__pyx_k_tuple_67)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_67);
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_67));
+  __pyx_k_codeobj_68 = (PyObject*)__Pyx_PyCode_New(1, 0, 5, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_67, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_66, __pyx_n_s___make_config, 32, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_68)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -27550,8 +27136,8 @@ static int __Pyx_InitCachedConstants(void) {
 
 static int __Pyx_InitGlobals(void) {
   if (__Pyx_InitStrings(__pyx_string_tab) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
-  __pyx_int_0 = PyInt_FromLong(0); if (unlikely(!__pyx_int_0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_int_1 = PyInt_FromLong(1); if (unlikely(!__pyx_int_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_int_0 = PyInt_FromLong(0); if (unlikely(!__pyx_int_0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+  __pyx_int_1 = PyInt_FromLong(1); if (unlikely(!__pyx_int_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
   return 0;
   __pyx_L1_error:;
   return -1;
@@ -27569,7 +27155,6 @@ PyMODINIT_FUNC PyInit__cdec(void)
   PyObject *__pyx_t_2 = NULL;
   PyObject *__pyx_t_3 = NULL;
   PyObject *__pyx_t_4 = NULL;
-  PyObject *__pyx_t_5 = NULL;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
@@ -27612,6 +27197,14 @@ PyMODINIT_FUNC PyInit__cdec(void)
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   __pyx_d = PyModule_GetDict(__pyx_m); if (unlikely(!__pyx_d)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   Py_INCREF(__pyx_d);
+  #if PY_MAJOR_VERSION >= 3
+  {
+    PyObject *modules = PyImport_GetModuleDict(); if (unlikely(!modules)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (!PyDict_GetItemString(modules, "cdec._cdec")) {
+      if (unlikely(PyDict_SetItemString(modules, "cdec._cdec", __pyx_m) < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    }
+  }
+  #endif
   __pyx_b = PyImport_AddModule(__Pyx_NAMESTR(__Pyx_BUILTIN_MODULE_NAME)); if (unlikely(!__pyx_b)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   #if CYTHON_COMPILING_IN_PYPY
   Py_INCREF(__pyx_b);
@@ -27623,16 +27216,8 @@ PyMODINIT_FUNC PyInit__cdec(void)
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   #endif
   if (__pyx_module_is_main_cdec___cdec) {
-    if (__Pyx_SetAttrString(__pyx_m, "__name__", __pyx_n_s_main) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
-  }
-  #if PY_MAJOR_VERSION >= 3
-  {
-    PyObject *modules = PyImport_GetModuleDict(); if (unlikely(!modules)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    if (!PyDict_GetItemString(modules, "cdec._cdec")) {
-      if (unlikely(PyDict_SetItemString(modules, "cdec._cdec", __pyx_m) < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    }
+    if (__Pyx_SetAttrString(__pyx_m, "__name__", __pyx_n_s____main__) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
   }
-  #endif
   /*--- Builtin init code ---*/
   if (unlikely(__Pyx_InitCachedBuiltins() < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   /*--- Constants init code ---*/
@@ -27641,8 +27226,36 @@ PyMODINIT_FUNC PyInit__cdec(void)
   /*--- Variable export code ---*/
   /*--- Function export code ---*/
   /*--- Type init code ---*/
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_24___iter__) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 44; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_24___iter__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_24___iter__;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_TRule) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 49; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  #if CYTHON_COMPILING_IN_CPYTHON
+  {
+    PyObject *wrapper = __Pyx_GetAttrString((PyObject *)&__pyx_type_4cdec_5_cdec_TRule, "__init__"); if (unlikely(!wrapper)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 49; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
+      __pyx_wrapperbase_4cdec_5_cdec_5TRule___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
+      __pyx_wrapperbase_4cdec_5_cdec_5TRule___init__.doc = __pyx_doc_4cdec_5_cdec_5TRule___init__;
+      ((PyWrapperDescrObject *)wrapper)->d_base = &__pyx_wrapperbase_4cdec_5_cdec_5TRule___init__;
+    }
+  }
+  #endif
+  if (__Pyx_SetAttrString(__pyx_m, "TRule", (PyObject *)&__pyx_type_4cdec_5_cdec_TRule) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 49; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec_TRule = &__pyx_type_4cdec_5_cdec_TRule;
+  __pyx_type_4cdec_5_cdec_MRule.tp_base = __pyx_ptype_4cdec_5_cdec_TRule;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_MRule) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 183; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  #if CYTHON_COMPILING_IN_CPYTHON
+  {
+    PyObject *wrapper = __Pyx_GetAttrString((PyObject *)&__pyx_type_4cdec_5_cdec_MRule, "__init__"); if (unlikely(!wrapper)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 183; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
+      __pyx_wrapperbase_4cdec_5_cdec_5MRule___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
+      __pyx_wrapperbase_4cdec_5_cdec_5MRule___init__.doc = __pyx_doc_4cdec_5_cdec_5MRule___init__;
+      ((PyWrapperDescrObject *)wrapper)->d_base = &__pyx_wrapperbase_4cdec_5_cdec_5MRule___init__;
+    }
+  }
+  #endif
+  if (__Pyx_SetAttrString(__pyx_m, "MRule", (PyObject *)&__pyx_type_4cdec_5_cdec_MRule) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 183; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec_MRule = &__pyx_type_4cdec_5_cdec_MRule;
   if (PyType_Ready(&__pyx_type_4cdec_5_cdec_DenseVector) < 0) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_DenseVector.tp_print = 0;
   #if CYTHON_COMPILING_IN_CPYTHON
   {
     PyObject *wrapper = __Pyx_GetAttrString((PyObject *)&__pyx_type_4cdec_5_cdec_DenseVector, "__init__"); if (unlikely(!wrapper)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
@@ -27655,8 +27268,24 @@ PyMODINIT_FUNC PyInit__cdec(void)
   #endif
   if (__Pyx_SetAttrString(__pyx_m, "DenseVector", (PyObject *)&__pyx_type_4cdec_5_cdec_DenseVector) < 0) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_4cdec_5_cdec_DenseVector = &__pyx_type_4cdec_5_cdec_DenseVector;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_SufficientStats) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "SufficientStats", (PyObject *)&__pyx_type_4cdec_5_cdec_SufficientStats) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec_SufficientStats = &__pyx_type_4cdec_5_cdec_SufficientStats;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_23_lines) < 0) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_23_lines = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_23_lines;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_27___init__) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 47; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_27___init__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_27___init__;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_21___iter__) < 0) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 56; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_21___iter__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_21___iter__;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_Metric) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 176; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "Metric", (PyObject *)&__pyx_type_4cdec_5_cdec_Metric) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 176; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec_Metric = &__pyx_type_4cdec_5_cdec_Metric;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 97; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_11_unique_kbest;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_Candidate) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 12; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "Candidate", (PyObject *)&__pyx_type_4cdec_5_cdec_Candidate) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 12; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec_Candidate = &__pyx_type_4cdec_5_cdec_Candidate;
   if (PyType_Ready(&__pyx_type_4cdec_5_cdec_SparseVector) < 0) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 48; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_SparseVector.tp_print = 0;
   #if CYTHON_COMPILING_IN_CPYTHON
   {
     PyObject *wrapper = __Pyx_GetAttrString((PyObject *)&__pyx_type_4cdec_5_cdec_SparseVector, "__init__"); if (unlikely(!wrapper)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 48; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
@@ -27669,8 +27298,9 @@ PyMODINIT_FUNC PyInit__cdec(void)
   #endif
   if (__Pyx_SetAttrString(__pyx_m, "SparseVector", (PyObject *)&__pyx_type_4cdec_5_cdec_SparseVector) < 0) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 48; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_4cdec_5_cdec_SparseVector = &__pyx_type_4cdec_5_cdec_SparseVector;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_26__make_config) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_26__make_config = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_26__make_config;
   if (PyType_Ready(&__pyx_type_4cdec_5_cdec_NT) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 8; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_NT.tp_print = 0;
   #if CYTHON_COMPILING_IN_CPYTHON
   {
     PyObject *wrapper = __Pyx_GetAttrString((PyObject *)&__pyx_type_4cdec_5_cdec_NT, "__init__"); if (unlikely(!wrapper)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 8; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
@@ -27683,8 +27313,41 @@ PyMODINIT_FUNC PyInit__cdec(void)
   #endif
   if (__Pyx_SetAttrString(__pyx_m, "NT", (PyObject *)&__pyx_type_4cdec_5_cdec_NT) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 8; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_4cdec_5_cdec_NT = &__pyx_type_4cdec_5_cdec_NT;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_Lattice) < 0) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  #if CYTHON_COMPILING_IN_CPYTHON
+  {
+    PyObject *wrapper = __Pyx_GetAttrString((PyObject *)&__pyx_type_4cdec_5_cdec_Lattice, "__init__"); if (unlikely(!wrapper)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
+      __pyx_wrapperbase_4cdec_5_cdec_7Lattice_2__init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
+      __pyx_wrapperbase_4cdec_5_cdec_7Lattice_2__init__.doc = __pyx_doc_4cdec_5_cdec_7Lattice_2__init__;
+      ((PyWrapperDescrObject *)wrapper)->d_base = &__pyx_wrapperbase_4cdec_5_cdec_7Lattice_2__init__;
+    }
+  }
+  #endif
+  if (__Pyx_SetAttrString(__pyx_m, "Lattice", (PyObject *)&__pyx_type_4cdec_5_cdec_Lattice) < 0) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec_Lattice = &__pyx_type_4cdec_5_cdec_Lattice;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_15_sample_trees) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 156; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_15_sample_trees = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_15_sample_trees;
+  __pyx_vtabptr_4cdec_5_cdec_HypergraphEdge = &__pyx_vtable_4cdec_5_cdec_HypergraphEdge;
+  __pyx_vtable_4cdec_5_cdec_HypergraphEdge.init = (PyObject *(*)(struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *, Hypergraph *, unsigned int))__pyx_f_4cdec_5_cdec_14HypergraphEdge_init;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_HypergraphEdge) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 244; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetVtable(__pyx_type_4cdec_5_cdec_HypergraphEdge.tp_dict, __pyx_vtabptr_4cdec_5_cdec_HypergraphEdge) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 244; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "HypergraphEdge", (PyObject *)&__pyx_type_4cdec_5_cdec_HypergraphEdge) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 244; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec_HypergraphEdge = &__pyx_type_4cdec_5_cdec_HypergraphEdge;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_2__phrase) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 5; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_2__phrase = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_2__phrase;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_Scorer) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "Scorer", (PyObject *)&__pyx_type_4cdec_5_cdec_Scorer) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec_Scorer = &__pyx_type_4cdec_5_cdec_Scorer;
+  __pyx_vtabptr_4cdec_5_cdec_HypergraphNode = &__pyx_vtable_4cdec_5_cdec_HypergraphNode;
+  __pyx_vtable_4cdec_5_cdec_HypergraphNode.init = (PyObject *(*)(struct __pyx_obj_4cdec_5_cdec_HypergraphNode *, Hypergraph *, unsigned int))__pyx_f_4cdec_5_cdec_14HypergraphNode_init;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_HypergraphNode) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 294; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetVtable(__pyx_type_4cdec_5_cdec_HypergraphNode.tp_dict, __pyx_vtabptr_4cdec_5_cdec_HypergraphNode) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 294; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "HypergraphNode", (PyObject *)&__pyx_type_4cdec_5_cdec_HypergraphNode) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 294; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec_HypergraphNode = &__pyx_type_4cdec_5_cdec_HypergraphNode;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_10_kbest_features) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 81; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_10_kbest_features = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_10_kbest_features;
   if (PyType_Ready(&__pyx_type_4cdec_5_cdec_NTRef) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 21; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_NTRef.tp_print = 0;
   #if CYTHON_COMPILING_IN_CPYTHON
   {
     PyObject *wrapper = __Pyx_GetAttrString((PyObject *)&__pyx_type_4cdec_5_cdec_NTRef, "__init__"); if (unlikely(!wrapper)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 21; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
@@ -27697,42 +27360,47 @@ PyMODINIT_FUNC PyInit__cdec(void)
   #endif
   if (__Pyx_SetAttrString(__pyx_m, "NTRef", (PyObject *)&__pyx_type_4cdec_5_cdec_NTRef) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 21; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_4cdec_5_cdec_NTRef = &__pyx_type_4cdec_5_cdec_NTRef;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_TRule) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 49; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_TRule.tp_print = 0;
-  #if CYTHON_COMPILING_IN_CPYTHON
-  {
-    PyObject *wrapper = __Pyx_GetAttrString((PyObject *)&__pyx_type_4cdec_5_cdec_TRule, "__init__"); if (unlikely(!wrapper)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 49; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
-      __pyx_wrapperbase_4cdec_5_cdec_5TRule___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
-      __pyx_wrapperbase_4cdec_5_cdec_5TRule___init__.doc = __pyx_doc_4cdec_5_cdec_5TRule___init__;
-      ((PyWrapperDescrObject *)wrapper)->d_base = &__pyx_wrapperbase_4cdec_5_cdec_5TRule___init__;
-    }
-  }
-  #endif
-  if (__Pyx_SetAttrString(__pyx_m, "TRule", (PyObject *)&__pyx_type_4cdec_5_cdec_TRule) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 49; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_4cdec_5_cdec_TRule = &__pyx_type_4cdec_5_cdec_TRule;
-  __pyx_type_4cdec_5_cdec_MRule.tp_base = __pyx_ptype_4cdec_5_cdec_TRule;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_MRule) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 183; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_MRule.tp_print = 0;
-  #if CYTHON_COMPILING_IN_CPYTHON
-  {
-    PyObject *wrapper = __Pyx_GetAttrString((PyObject *)&__pyx_type_4cdec_5_cdec_MRule, "__init__"); if (unlikely(!wrapper)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 183; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
-      __pyx_wrapperbase_4cdec_5_cdec_5MRule___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
-      __pyx_wrapperbase_4cdec_5_cdec_5MRule___init__.doc = __pyx_doc_4cdec_5_cdec_5MRule___init__;
-      ((PyWrapperDescrObject *)wrapper)->d_base = &__pyx_wrapperbase_4cdec_5_cdec_5MRule___init__;
-    }
-  }
-  #endif
-  if (__Pyx_SetAttrString(__pyx_m, "MRule", (PyObject *)&__pyx_type_4cdec_5_cdec_MRule) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 183; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_4cdec_5_cdec_MRule = &__pyx_type_4cdec_5_cdec_MRule;
   if (PyType_Ready(&__pyx_type_4cdec_5_cdec_Grammar) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 199; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_Grammar.tp_print = 0;
   if (__Pyx_SetAttrString(__pyx_m, "Grammar", (PyObject *)&__pyx_type_4cdec_5_cdec_Grammar) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 199; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_4cdec_5_cdec_Grammar = &__pyx_type_4cdec_5_cdec_Grammar;
+  __pyx_vtabptr_4cdec_5_cdec_Hypergraph = &__pyx_vtable_4cdec_5_cdec_Hypergraph;
+  __pyx_vtable_4cdec_5_cdec_Hypergraph._rng = (MT19937 *(*)(struct __pyx_obj_4cdec_5_cdec_Hypergraph *))__pyx_f_4cdec_5_cdec_10Hypergraph__rng;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_Hypergraph) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetVtable(__pyx_type_4cdec_5_cdec_Hypergraph.tp_dict, __pyx_vtabptr_4cdec_5_cdec_Hypergraph) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "Hypergraph", (PyObject *)&__pyx_type_4cdec_5_cdec_Hypergraph) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec_Hypergraph = &__pyx_type_4cdec_5_cdec_Hypergraph;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_CandidateSet) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 65; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "CandidateSet", (PyObject *)&__pyx_type_4cdec_5_cdec_CandidateSet) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 65; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec_CandidateSet = &__pyx_type_4cdec_5_cdec_CandidateSet;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_22_todot) < 0) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_22_todot = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_22_todot;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_5___str__) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 178; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_5___str__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_5___str__;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_SegmentEvaluator) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "SegmentEvaluator", (PyObject *)&__pyx_type_4cdec_5_cdec_SegmentEvaluator) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec_SegmentEvaluator = &__pyx_type_4cdec_5_cdec_SegmentEvaluator;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_16___get__) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 209; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_16___get__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_16___get__;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_20___get__) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 314; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_20___get__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_20___get__;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_13_unique_kbest_features;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_28_genexpr) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 56; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_28_genexpr = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_28_genexpr;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_3_genexpr) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 6; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_3_genexpr = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_3_genexpr;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_8_kbest) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 49; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_8_kbest = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_8_kbest;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_18___get__) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 264; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_18___get__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_18___get__;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_7___iter__) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 205; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_7___iter__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_7___iter__;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_19___get__) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 308; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_19___get__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_19___get__;
   __pyx_type_4cdec_5_cdec_TextGrammar.tp_base = __pyx_ptype_4cdec_5_cdec_Grammar;
   if (PyType_Ready(&__pyx_type_4cdec_5_cdec_TextGrammar) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 223; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_TextGrammar.tp_print = 0;
   #if CYTHON_COMPILING_IN_CPYTHON
   {
     PyObject *wrapper = __Pyx_GetAttrString((PyObject *)&__pyx_type_4cdec_5_cdec_TextGrammar, "__init__"); if (unlikely(!wrapper)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 223; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
@@ -27745,67 +27413,9 @@ PyMODINIT_FUNC PyInit__cdec(void)
   #endif
   if (__Pyx_SetAttrString(__pyx_m, "TextGrammar", (PyObject *)&__pyx_type_4cdec_5_cdec_TextGrammar) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 223; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_4cdec_5_cdec_TextGrammar = &__pyx_type_4cdec_5_cdec_TextGrammar;
-  __pyx_vtabptr_4cdec_5_cdec_Hypergraph = &__pyx_vtable_4cdec_5_cdec_Hypergraph;
-  __pyx_vtable_4cdec_5_cdec_Hypergraph._rng = (MT19937 *(*)(struct __pyx_obj_4cdec_5_cdec_Hypergraph *))__pyx_f_4cdec_5_cdec_10Hypergraph__rng;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_Hypergraph) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_Hypergraph.tp_print = 0;
-  if (__Pyx_SetVtable(__pyx_type_4cdec_5_cdec_Hypergraph.tp_dict, __pyx_vtabptr_4cdec_5_cdec_Hypergraph) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "Hypergraph", (PyObject *)&__pyx_type_4cdec_5_cdec_Hypergraph) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_4cdec_5_cdec_Hypergraph = &__pyx_type_4cdec_5_cdec_Hypergraph;
-  __pyx_vtabptr_4cdec_5_cdec_HypergraphEdge = &__pyx_vtable_4cdec_5_cdec_HypergraphEdge;
-  __pyx_vtable_4cdec_5_cdec_HypergraphEdge.init = (PyObject *(*)(struct __pyx_obj_4cdec_5_cdec_HypergraphEdge *, Hypergraph *, unsigned int))__pyx_f_4cdec_5_cdec_14HypergraphEdge_init;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_HypergraphEdge) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 196; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_HypergraphEdge.tp_print = 0;
-  if (__Pyx_SetVtable(__pyx_type_4cdec_5_cdec_HypergraphEdge.tp_dict, __pyx_vtabptr_4cdec_5_cdec_HypergraphEdge) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 196; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "HypergraphEdge", (PyObject *)&__pyx_type_4cdec_5_cdec_HypergraphEdge) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 196; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_4cdec_5_cdec_HypergraphEdge = &__pyx_type_4cdec_5_cdec_HypergraphEdge;
-  __pyx_vtabptr_4cdec_5_cdec_HypergraphNode = &__pyx_vtable_4cdec_5_cdec_HypergraphNode;
-  __pyx_vtable_4cdec_5_cdec_HypergraphNode.init = (PyObject *(*)(struct __pyx_obj_4cdec_5_cdec_HypergraphNode *, Hypergraph *, unsigned int))__pyx_f_4cdec_5_cdec_14HypergraphNode_init;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_HypergraphNode) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 246; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_HypergraphNode.tp_print = 0;
-  if (__Pyx_SetVtable(__pyx_type_4cdec_5_cdec_HypergraphNode.tp_dict, __pyx_vtabptr_4cdec_5_cdec_HypergraphNode) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 246; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "HypergraphNode", (PyObject *)&__pyx_type_4cdec_5_cdec_HypergraphNode) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 246; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_4cdec_5_cdec_HypergraphNode = &__pyx_type_4cdec_5_cdec_HypergraphNode;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_Lattice) < 0) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_Lattice.tp_print = 0;
-  #if CYTHON_COMPILING_IN_CPYTHON
-  {
-    PyObject *wrapper = __Pyx_GetAttrString((PyObject *)&__pyx_type_4cdec_5_cdec_Lattice, "__init__"); if (unlikely(!wrapper)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
-      __pyx_wrapperbase_4cdec_5_cdec_7Lattice_2__init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
-      __pyx_wrapperbase_4cdec_5_cdec_7Lattice_2__init__.doc = __pyx_doc_4cdec_5_cdec_7Lattice_2__init__;
-      ((PyWrapperDescrObject *)wrapper)->d_base = &__pyx_wrapperbase_4cdec_5_cdec_7Lattice_2__init__;
-    }
-  }
-  #endif
-  if (__Pyx_SetAttrString(__pyx_m, "Lattice", (PyObject *)&__pyx_type_4cdec_5_cdec_Lattice) < 0) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_4cdec_5_cdec_Lattice = &__pyx_type_4cdec_5_cdec_Lattice;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_Candidate) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 12; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_Candidate.tp_print = 0;
-  if (__Pyx_SetAttrString(__pyx_m, "Candidate", (PyObject *)&__pyx_type_4cdec_5_cdec_Candidate) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 12; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_4cdec_5_cdec_Candidate = &__pyx_type_4cdec_5_cdec_Candidate;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_SufficientStats) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_SufficientStats.tp_print = 0;
-  if (__Pyx_SetAttrString(__pyx_m, "SufficientStats", (PyObject *)&__pyx_type_4cdec_5_cdec_SufficientStats) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_4cdec_5_cdec_SufficientStats = &__pyx_type_4cdec_5_cdec_SufficientStats;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_CandidateSet) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 65; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_CandidateSet.tp_print = 0;
-  if (__Pyx_SetAttrString(__pyx_m, "CandidateSet", (PyObject *)&__pyx_type_4cdec_5_cdec_CandidateSet) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 65; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_4cdec_5_cdec_CandidateSet = &__pyx_type_4cdec_5_cdec_CandidateSet;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_SegmentEvaluator) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_SegmentEvaluator.tp_print = 0;
-  if (__Pyx_SetAttrString(__pyx_m, "SegmentEvaluator", (PyObject *)&__pyx_type_4cdec_5_cdec_SegmentEvaluator) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_4cdec_5_cdec_SegmentEvaluator = &__pyx_type_4cdec_5_cdec_SegmentEvaluator;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_Scorer) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_Scorer.tp_print = 0;
-  if (__Pyx_SetAttrString(__pyx_m, "Scorer", (PyObject *)&__pyx_type_4cdec_5_cdec_Scorer) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_4cdec_5_cdec_Scorer = &__pyx_type_4cdec_5_cdec_Scorer;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec_Metric) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 176; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_Metric.tp_print = 0;
-  if (__Pyx_SetAttrString(__pyx_m, "Metric", (PyObject *)&__pyx_type_4cdec_5_cdec_Metric) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 176; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_4cdec_5_cdec_Metric = &__pyx_type_4cdec_5_cdec_Metric;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_25___iter__) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 90; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_25___iter__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_25___iter__;
   if (PyType_Ready(&__pyx_type_4cdec_5_cdec_Decoder) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec_Decoder.tp_print = 0;
   #if CYTHON_COMPILING_IN_CPYTHON
   {
     PyObject *wrapper = __Pyx_GetAttrString((PyObject *)&__pyx_type_4cdec_5_cdec_Decoder, "__init__"); if (unlikely(!wrapper)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
@@ -27819,92 +27429,28 @@ PyMODINIT_FUNC PyInit__cdec(void)
   if (__Pyx_SetAttrString(__pyx_m, "Decoder", (PyObject *)&__pyx_type_4cdec_5_cdec_Decoder) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_4cdec_5_cdec_Decoder = &__pyx_type_4cdec_5_cdec_Decoder;
   if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct____iter__) < 0) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec___pyx_scope_struct____iter__.tp_print = 0;
   __pyx_ptype_4cdec_5_cdec___pyx_scope_struct____iter__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct____iter__;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_1___iter__) < 0) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 72; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_1___iter__.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_1___iter__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_1___iter__;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_2__phrase) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 5; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_2__phrase.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_2__phrase = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_2__phrase;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_3_genexpr) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 6; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_3_genexpr.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_3_genexpr = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_3_genexpr;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_4___get__) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 137; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_4___get__.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_4___get__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_4___get__;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_5___str__) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 178; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_5___str__.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_5___str__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_5___str__;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_14_sample) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 145; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_14_sample = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_14_sample;
+  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_17___get__) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 215; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_17___get__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_17___get__;
   if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_6_genexpr) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 179; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_6_genexpr.tp_print = 0;
   __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_6_genexpr = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_6_genexpr;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_7___iter__) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 205; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_7___iter__.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_7___iter__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_7___iter__;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_8_kbest) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 49; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_8_kbest.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_8_kbest = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_8_kbest;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_9_kbest_trees;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_10_kbest_features) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 81; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_10_kbest_features.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_10_kbest_features = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_10_kbest_features;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_11_sample) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 97; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_11_sample.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_11_sample = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_11_sample;
-  if (PyType_Ready(&__pyx_type_4cdec_5_cdec___pyx_scope_struct_12_sample_trees) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 108; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_12_sample_trees.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_12_sample_trees = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_12_sample_trees;
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-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_13___get__.tp_print = 0;
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-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_14___get__.tp_print = 0;
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-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_15___get__.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_15___get__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_15___get__;
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-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_16___get__.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_16___get__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_16___get__;
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-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_17___get__.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_17___get__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_17___get__;
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-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_18___iter__.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_18___iter__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_18___iter__;
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-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_19_todot.tp_print = 0;
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-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_24___init__.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_24___init__ = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_24___init__;
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-  __pyx_type_4cdec_5_cdec___pyx_scope_struct_25_genexpr.tp_print = 0;
-  __pyx_ptype_4cdec_5_cdec___pyx_scope_struct_25_genexpr = &__pyx_type_4cdec_5_cdec___pyx_scope_struct_25_genexpr;
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+  __pyx_vtabptr_4cdec_2sa_3_sa_IntList = (struct __pyx_vtabstruct_4cdec_2sa_3_sa_IntList*)__Pyx_GetVtable(__pyx_ptype_4cdec_2sa_3_sa_IntList->tp_dict); if (unlikely(!__pyx_vtabptr_4cdec_2sa_3_sa_IntList)) {__pyx_filename = __pyx_f[6]; __pyx_lineno = 12; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -27915,7 +27461,7 @@ PyMODINIT_FUNC PyInit__cdec(void)
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-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":3
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":3
  * cimport grammar
  * cimport cdec.sa._sa as _sa
  * import cdec.sa._sa as _sa             # <<<<<<<<<<<<<<
@@ -27924,82 +27470,82 @@ PyMODINIT_FUNC PyInit__cdec(void)
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-  PyList_SET_ITEM(__pyx_t_2, 0, __pyx_n_s__23);
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+  __Pyx_INCREF(((PyObject *)__pyx_n_s_55));
+  PyList_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_n_s_55));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s_55));
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+  __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
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   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/grammar.pxi":5
+  /* "/usr0/home/austinma/git/cdec/python/cdec/grammar.pxi":5
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  * 
  * def _phrase(phrase):             # <<<<<<<<<<<<<<
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+  __pyx_t_3 = PyCFunction_NewEx(&__pyx_mdef_4cdec_5_cdec_1_phrase, NULL, __pyx_n_s_39); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 5; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_phrase, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 5; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s___phrase, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 5; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":194
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":194
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  * BLEU = Scorer('IBM_BLEU')             # <<<<<<<<<<<<<<
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-  __pyx_t_3 = __Pyx_PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_Scorer)), __pyx_tuple__26, NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 194; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_Scorer)), ((PyObject *)__pyx_k_tuple_59), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 194; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_BLEU, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 194; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s__BLEU, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 194; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":195
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-  __pyx_t_3 = __Pyx_PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_Scorer)), __pyx_tuple__27, NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 195; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_Scorer)), ((PyObject *)__pyx_k_tuple_60), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 195; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_QCRI, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 195; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s__QCRI, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 195; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":196
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":196
  * BLEU = Scorer('IBM_BLEU')
  * QCRI = Scorer('QCRI_BLEU')
  * TER = Scorer('TER')             # <<<<<<<<<<<<<<
  * CER = Scorer('CER')
  * SSK = Scorer('SSK')
  */
-  __pyx_t_3 = __Pyx_PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_Scorer)), __pyx_tuple__28, NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 196; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_Scorer)), ((PyObject *)__pyx_k_tuple_61), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 196; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_TER, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 196; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s__TER, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 196; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":197
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":197
  * QCRI = Scorer('QCRI_BLEU')
  * TER = Scorer('TER')
  * CER = Scorer('CER')             # <<<<<<<<<<<<<<
  * SSK = Scorer('SSK')
  */
-  __pyx_t_3 = __Pyx_PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_Scorer)), __pyx_tuple__29, NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 197; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_Scorer)), ((PyObject *)__pyx_k_tuple_62), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 197; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_CER, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 197; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s__CER, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 197; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-  /* "/usr0/home/cdyer/cdec/python/cdec/mteval.pxi":198
+  /* "/usr0/home/austinma/git/cdec/python/cdec/mteval.pxi":198
  * TER = Scorer('TER')
  * CER = Scorer('CER')
  * SSK = Scorer('SSK')             # <<<<<<<<<<<<<<
  */
-  __pyx_t_3 = __Pyx_PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_Scorer)), __pyx_tuple__30, NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 198; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_4cdec_5_cdec_Scorer)), ((PyObject *)__pyx_k_tuple_63), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 198; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_SSK, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 198; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s__SSK, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 198; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
   /* "cdec/_cdec.pyx":22
@@ -28027,22 +27573,19 @@ PyMODINIT_FUNC PyInit__cdec(void)
  * class ParseFailed(Exception): pass
  * 
  */
-  __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_3);
+  __pyx_t_3 = PyDict_New(); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(((PyObject *)__pyx_t_3));
+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
   __Pyx_INCREF(__pyx_builtin_Exception);
-  PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_builtin_Exception);
+  PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_builtin_Exception);
   __Pyx_GIVEREF(__pyx_builtin_Exception);
-  __pyx_t_2 = __Pyx_CalculateMetaclass(NULL, __pyx_t_3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_2);
-  __pyx_t_4 = __Pyx_Py3MetaclassPrepare(__pyx_t_2, __pyx_t_3, __pyx_n_s_InvalidConfig, __pyx_n_s_InvalidConfig, (PyObject *) NULL, __pyx_n_s_cdec__cdec, (PyObject *) NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = __Pyx_CreateClass(((PyObject *)__pyx_t_2), ((PyObject *)__pyx_t_3), __pyx_n_s__InvalidConfig, __pyx_n_s__InvalidConfig, __pyx_n_s_39); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_4);
-  __pyx_t_5 = __Pyx_Py3ClassCreate(__pyx_t_2, __pyx_n_s_InvalidConfig, __pyx_t_3, __pyx_t_4, NULL, 0, 1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_5);
-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_InvalidConfig, __pyx_t_5) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s__InvalidConfig, __pyx_t_4) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
-  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
 
   /* "cdec/_cdec.pyx":26
  * 
@@ -28051,22 +27594,19 @@ PyMODINIT_FUNC PyInit__cdec(void)
  * 
  * def set_silent(yn):
  */
-  __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_3);
+  __pyx_t_3 = PyDict_New(); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(((PyObject *)__pyx_t_3));
+  __pyx_t_4 = PyTuple_New(1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_4);
   __Pyx_INCREF(__pyx_builtin_Exception);
-  PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_builtin_Exception);
+  PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_builtin_Exception);
   __Pyx_GIVEREF(__pyx_builtin_Exception);
-  __pyx_t_2 = __Pyx_CalculateMetaclass(NULL, __pyx_t_3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = __Pyx_CreateClass(((PyObject *)__pyx_t_4), ((PyObject *)__pyx_t_3), __pyx_n_s__ParseFailed, __pyx_n_s__ParseFailed, __pyx_n_s_39); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
-  __pyx_t_4 = __Pyx_Py3MetaclassPrepare(__pyx_t_2, __pyx_t_3, __pyx_n_s_ParseFailed, __pyx_n_s_ParseFailed, (PyObject *) NULL, __pyx_n_s_cdec__cdec, (PyObject *) NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_4);
-  __pyx_t_5 = __Pyx_Py3ClassCreate(__pyx_t_2, __pyx_n_s_ParseFailed, __pyx_t_3, __pyx_t_4, NULL, 0, 1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_5);
-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_ParseFailed, __pyx_t_5) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-  __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s__ParseFailed, __pyx_t_2) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
 
   /* "cdec/_cdec.pyx":28
  * class ParseFailed(Exception): pass
@@ -28075,9 +27615,9 @@ PyMODINIT_FUNC PyInit__cdec(void)
  *     """set_silent(bool): Configure the verbosity of cdec."""
  *     SetSilent(yn)
  */
-  __pyx_t_3 = PyCFunction_NewEx(&__pyx_mdef_4cdec_5_cdec_3set_silent, NULL, __pyx_n_s_cdec__cdec); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyCFunction_NewEx(&__pyx_mdef_4cdec_5_cdec_3set_silent, NULL, __pyx_n_s_39); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_set_silent, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s__set_silent, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
   /* "cdec/_cdec.pyx":32
@@ -28087,9 +27627,9 @@ PyMODINIT_FUNC PyInit__cdec(void)
  *     for key, value in config.items():
  *         if isinstance(value, dict):
  */
-  __pyx_t_3 = PyCFunction_NewEx(&__pyx_mdef_4cdec_5_cdec_5_make_config, NULL, __pyx_n_s_cdec__cdec); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyCFunction_NewEx(&__pyx_mdef_4cdec_5_cdec_5_make_config, NULL, __pyx_n_s_39); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_make_config, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s___make_config, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
   /* "cdec/_cdec.pyx":1
@@ -28098,9 +27638,9 @@ PyMODINIT_FUNC PyInit__cdec(void)
  * from utils cimport *
  */
   __pyx_t_3 = PyDict_New(); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_3);
-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_test, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+  __Pyx_GOTREF(((PyObject *)__pyx_t_3));
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s____test__, ((PyObject *)__pyx_t_3)) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
 
   /* "string.from_py":13
  * 
@@ -28115,7 +27655,6 @@ PyMODINIT_FUNC PyInit__cdec(void)
   __Pyx_XDECREF(__pyx_t_2);
   __Pyx_XDECREF(__pyx_t_3);
   __Pyx_XDECREF(__pyx_t_4);
-  __Pyx_XDECREF(__pyx_t_5);
   if (__pyx_m) {
     __Pyx_AddTraceback("init cdec._cdec", __pyx_clineno, __pyx_lineno, __pyx_filename);
     Py_DECREF(__pyx_m); __pyx_m = 0;
@@ -28155,34 +27694,11 @@ static PyObject *__Pyx_GetBuiltinName(PyObject *name) {
 #if PY_MAJOR_VERSION >= 3
             "name '%U' is not defined", name);
 #else
-            "name '%.200s' is not defined", PyString_AS_STRING(name));
-#endif
-    }
-    return result;
-}
-
-#if CYTHON_COMPILING_IN_CPYTHON
-static CYTHON_INLINE PyObject* __Pyx_PyObject_Call(PyObject *func, PyObject *arg, PyObject *kw) {
-    PyObject *result;
-    ternaryfunc call = func->ob_type->tp_call;
-    if (unlikely(!call))
-        return PyObject_Call(func, arg, kw);
-#if PY_VERSION_HEX >= 0x02060000
-    if (unlikely(Py_EnterRecursiveCall((char*)" while calling a Python object")))
-        return NULL;
+            "name '%s' is not defined", PyString_AS_STRING(name));
 #endif
-    result = (*call)(func, arg, kw);
-#if PY_VERSION_HEX >= 0x02060000
-    Py_LeaveRecursiveCall();
-#endif
-    if (unlikely(!result) && unlikely(!PyErr_Occurred())) {
-        PyErr_SetString(
-            PyExc_SystemError,
-            "NULL result without error in PyObject_Call");
     }
     return result;
 }
-#endif
 
 static CYTHON_INLINE void __Pyx_ErrRestore(PyObject *type, PyObject *value, PyObject *tb) {
 #if CYTHON_COMPILING_IN_CPYTHON
@@ -28301,40 +27817,27 @@ static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject
         value = type;
         type = (PyObject*) Py_TYPE(value);
     } else if (PyExceptionClass_Check(type)) {
-        PyObject *instance_class = NULL;
-        if (value && PyExceptionInstance_Check(value)) {
-            instance_class = (PyObject*) Py_TYPE(value);
-            if (instance_class != type) {
-                if (PyObject_IsSubclass(instance_class, type)) {
-                    type = instance_class;
-                } else {
-                    instance_class = NULL;
-                }
-            }
-        }
-        if (!instance_class) {
-            PyObject *args;
-            if (!value)
-                args = PyTuple_New(0);
-            else if (PyTuple_Check(value)) {
-                Py_INCREF(value);
-                args = value;
-            } else
-                args = PyTuple_Pack(1, value);
-            if (!args)
-                goto bad;
-            owned_instance = PyObject_Call(type, args, NULL);
-            Py_DECREF(args);
-            if (!owned_instance)
-                goto bad;
-            value = owned_instance;
-            if (!PyExceptionInstance_Check(value)) {
-                PyErr_Format(PyExc_TypeError,
-                             "calling %R should have returned an instance of "
-                             "BaseException, not %R",
-                             type, Py_TYPE(value));
-                goto bad;
-            }
+        PyObject *args;
+        if (!value)
+            args = PyTuple_New(0);
+        else if (PyTuple_Check(value)) {
+            Py_INCREF(value);
+            args = value;
+        } else
+            args = PyTuple_Pack(1, value);
+        if (!args)
+            goto bad;
+        owned_instance = PyEval_CallObject(type, args);
+        Py_DECREF(args);
+        if (!owned_instance)
+            goto bad;
+        value = owned_instance;
+        if (!PyExceptionInstance_Check(value)) {
+            PyErr_Format(PyExc_TypeError,
+                         "calling %R should have returned an instance of "
+                         "BaseException, not %R",
+                         type, Py_TYPE(value));
+            goto bad;
         }
     } else {
         PyErr_SetString(PyExc_TypeError,
@@ -28400,7 +27903,7 @@ static void __Pyx_RaiseArgtupleInvalid(
         more_or_less = "exactly";
     }
     PyErr_Format(PyExc_TypeError,
-                 "%.200s() takes %.8s %" CYTHON_FORMAT_SSIZE_T "d positional argument%.1s (%" CYTHON_FORMAT_SSIZE_T "d given)",
+                 "%s() takes %s %" CYTHON_FORMAT_SSIZE_T "d positional argument%s (%" CYTHON_FORMAT_SSIZE_T "d given)",
                  func_name, more_or_less, num_expected,
                  (num_expected == 1) ? "" : "s", num_found);
 }
@@ -28429,13 +27932,13 @@ static CYTHON_INLINE int __Pyx_CheckKeywordStrings(
     return 1;
 invalid_keyword_type:
     PyErr_Format(PyExc_TypeError,
-        "%.200s() keywords must be strings", function_name);
+        "%s() keywords must be strings", function_name);
     return 0;
 #endif
 invalid_keyword:
     PyErr_Format(PyExc_TypeError,
     #if PY_MAJOR_VERSION < 3
-        "%.200s() got an unexpected keyword argument '%.200s'",
+        "%s() got an unexpected keyword argument '%s'",
         function_name, PyString_AsString(key));
     #else
         "%s() got an unexpected keyword argument '%U'",
@@ -28444,35 +27947,29 @@ invalid_keyword:
     return 0;
 }
 
-static void __Pyx_RaiseArgumentTypeInvalid(const char* name, PyObject *obj, PyTypeObject *type) {
-    PyErr_Format(PyExc_TypeError,
-        "Argument '%.200s' has incorrect type (expected %.200s, got %.200s)",
-        name, type->tp_name, Py_TYPE(obj)->tp_name);
-}
-static CYTHON_INLINE int __Pyx_ArgTypeTest(PyObject *obj, PyTypeObject *type, int none_allowed,
+static int __Pyx_ArgTypeTest(PyObject *obj, PyTypeObject *type, int none_allowed,
     const char *name, int exact)
 {
-    if (unlikely(!type)) {
-        PyErr_SetString(PyExc_SystemError, "Missing type object");
+    if (!type) {
+        PyErr_Format(PyExc_SystemError, "Missing type object");
         return 0;
     }
     if (none_allowed && obj == Py_None) return 1;
     else if (exact) {
-        if (likely(Py_TYPE(obj) == type)) return 1;
-        #if PY_MAJOR_VERSION == 2
-        else if ((type == &PyBaseString_Type) && likely(__Pyx_PyBaseString_CheckExact(obj))) return 1;
-        #endif
+        if (Py_TYPE(obj) == type) return 1;
     }
     else {
-        if (likely(PyObject_TypeCheck(obj, type))) return 1;
+        if (PyObject_TypeCheck(obj, type)) return 1;
     }
-    __Pyx_RaiseArgumentTypeInvalid(name, obj, type);
+    PyErr_Format(PyExc_TypeError,
+        "Argument '%s' has incorrect type (expected %s, got %s)",
+        name, type->tp_name, Py_TYPE(obj)->tp_name);
     return 0;
 }
 
 static CYTHON_INLINE int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type) {
     if (unlikely(!type)) {
-        PyErr_SetString(PyExc_SystemError, "Missing type object");
+        PyErr_Format(PyExc_SystemError, "Missing type object");
         return 0;
     }
     if (likely(PyObject_TypeCheck(obj, type)))
@@ -28482,123 +27979,10 @@ static CYTHON_INLINE int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type) {
     return 0;
 }
 
-static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb) {
-    PyObject *local_type, *local_value, *local_tb;
-#if CYTHON_COMPILING_IN_CPYTHON
-    PyObject *tmp_type, *tmp_value, *tmp_tb;
-    PyThreadState *tstate = PyThreadState_GET();
-    local_type = tstate->curexc_type;
-    local_value = tstate->curexc_value;
-    local_tb = tstate->curexc_traceback;
-    tstate->curexc_type = 0;
-    tstate->curexc_value = 0;
-    tstate->curexc_traceback = 0;
-#else
-    PyErr_Fetch(&local_type, &local_value, &local_tb);
-#endif
-    PyErr_NormalizeException(&local_type, &local_value, &local_tb);
-#if CYTHON_COMPILING_IN_CPYTHON
-    if (unlikely(tstate->curexc_type))
-#else
-    if (unlikely(PyErr_Occurred()))
-#endif
-        goto bad;
-    #if PY_MAJOR_VERSION >= 3
-    if (local_tb) {
-        if (unlikely(PyException_SetTraceback(local_value, local_tb) < 0))
-            goto bad;
-    }
-    #endif
-    Py_XINCREF(local_tb);
-    Py_XINCREF(local_type);
-    Py_XINCREF(local_value);
-    *type = local_type;
-    *value = local_value;
-    *tb = local_tb;
-#if CYTHON_COMPILING_IN_CPYTHON
-    tmp_type = tstate->exc_type;
-    tmp_value = tstate->exc_value;
-    tmp_tb = tstate->exc_traceback;
-    tstate->exc_type = local_type;
-    tstate->exc_value = local_value;
-    tstate->exc_traceback = local_tb;
-    Py_XDECREF(tmp_type);
-    Py_XDECREF(tmp_value);
-    Py_XDECREF(tmp_tb);
-#else
-    PyErr_SetExcInfo(local_type, local_value, local_tb);
-#endif
-    return 0;
-bad:
-    *type = 0;
-    *value = 0;
-    *tb = 0;
-    Py_XDECREF(local_type);
-    Py_XDECREF(local_value);
-    Py_XDECREF(local_tb);
-    return -1;
-}
-
-static CYTHON_INLINE void __Pyx_ExceptionSwap(PyObject **type, PyObject **value, PyObject **tb) {
-    PyObject *tmp_type, *tmp_value, *tmp_tb;
-#if CYTHON_COMPILING_IN_CPYTHON
-    PyThreadState *tstate = PyThreadState_GET();
-    tmp_type = tstate->exc_type;
-    tmp_value = tstate->exc_value;
-    tmp_tb = tstate->exc_traceback;
-    tstate->exc_type = *type;
-    tstate->exc_value = *value;
-    tstate->exc_traceback = *tb;
-#else
-    PyErr_GetExcInfo(&tmp_type, &tmp_value, &tmp_tb);
-    PyErr_SetExcInfo(*type, *value, *tb);
-#endif
-    *type = tmp_type;
-    *value = tmp_value;
-    *tb = tmp_tb;
-}
-
-static CYTHON_INLINE void __Pyx_ExceptionSave(PyObject **type, PyObject **value, PyObject **tb) {
-#if CYTHON_COMPILING_IN_CPYTHON
-    PyThreadState *tstate = PyThreadState_GET();
-    *type = tstate->exc_type;
-    *value = tstate->exc_value;
-    *tb = tstate->exc_traceback;
-    Py_XINCREF(*type);
-    Py_XINCREF(*value);
-    Py_XINCREF(*tb);
-#else
-    PyErr_GetExcInfo(type, value, tb);
-#endif
-}
-static void __Pyx_ExceptionReset(PyObject *type, PyObject *value, PyObject *tb) {
-#if CYTHON_COMPILING_IN_CPYTHON
-    PyObject *tmp_type, *tmp_value, *tmp_tb;
-    PyThreadState *tstate = PyThreadState_GET();
-    tmp_type = tstate->exc_type;
-    tmp_value = tstate->exc_value;
-    tmp_tb = tstate->exc_traceback;
-    tstate->exc_type = type;
-    tstate->exc_value = value;
-    tstate->exc_traceback = tb;
-    Py_XDECREF(tmp_type);
-    Py_XDECREF(tmp_value);
-    Py_XDECREF(tmp_tb);
-#else
-    PyErr_SetExcInfo(type, value, tb);
-#endif
-}
-
 static CYTHON_INLINE void __Pyx_RaiseClosureNameError(const char *varname) {
     PyErr_Format(PyExc_NameError, "free variable '%s' referenced before assignment in enclosing scope", varname);
 }
 
-#if !CYTHON_COMPILING_IN_CPYTHON
-static CYTHON_INLINE PyObject* __Pyx_PyBytes_Join(PyObject* sep, PyObject* values) {
-    return PyObject_CallMethodObjArgs(sep, __pyx_n_s_join, values, NULL)
-}
-#endif
-
 static void __Pyx_RaiseDoubleKeywordsError(
     const char* func_name,
     PyObject* kw_name)
@@ -28698,12 +28082,12 @@ arg_passed_twice:
     goto bad;
 invalid_keyword_type:
     PyErr_Format(PyExc_TypeError,
-        "%.200s() keywords must be strings", function_name);
+        "%s() keywords must be strings", function_name);
     goto bad;
 invalid_keyword:
     PyErr_Format(PyExc_TypeError,
     #if PY_MAJOR_VERSION < 3
-        "%.200s() got an unexpected keyword argument '%.200s'",
+        "%s() got an unexpected keyword argument '%s'",
         function_name, PyString_AsString(key));
     #else
         "%s() got an unexpected keyword argument '%U'",
@@ -28713,16 +28097,14 @@ bad:
     return -1;
 }
 
-static CYTHON_INLINE int __Pyx_PyObject_Append(PyObject* L, PyObject* x) {
+static CYTHON_INLINE PyObject* __Pyx_PyObject_Append(PyObject* L, PyObject* x) {
     if (likely(PyList_CheckExact(L))) {
-        if (unlikely(__Pyx_PyList_Append(L, x) < 0)) return -1;
+        if (unlikely(__Pyx_PyList_Append(L, x) < 0)) return NULL;
+        Py_INCREF(Py_None);
+        return Py_None; /* this is just to have an accurate signature */
     } else {
-        PyObject* retval = __Pyx_PyObject_CallMethod1(L, __pyx_n_s_append, x);
-        if (unlikely(!retval))
-            return -1;
-        Py_DECREF(retval);
+        return __Pyx_PyObject_CallMethod1(L, __pyx_n_s__append, x);
     }
-    return 0;
 }
 
 static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Generic(PyObject *o, PyObject* j) {
@@ -28810,7 +28192,7 @@ static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected) {
 
 static CYTHON_INLINE void __Pyx_RaiseNeedMoreValuesError(Py_ssize_t index) {
     PyErr_Format(PyExc_ValueError,
-                 "need more than %" CYTHON_FORMAT_SSIZE_T "d value%.1s to unpack",
+                 "need more than %" CYTHON_FORMAT_SSIZE_T "d value%s to unpack",
                  index, (index == 1) ? "" : "s");
 }
 
@@ -28877,18 +28259,10 @@ static CYTHON_INLINE PyObject *__Pyx_GetModuleGlobalName(PyObject *name) {
 }
 
 static void __Pyx_WriteUnraisable(const char *name, CYTHON_UNUSED int clineno,
-                                  CYTHON_UNUSED int lineno, CYTHON_UNUSED const char *filename,
-                                  int full_traceback) {
+                                  CYTHON_UNUSED int lineno, CYTHON_UNUSED const char *filename) {
     PyObject *old_exc, *old_val, *old_tb;
     PyObject *ctx;
     __Pyx_ErrFetch(&old_exc, &old_val, &old_tb);
-    if (full_traceback) {
-        Py_XINCREF(old_exc);
-        Py_XINCREF(old_val);
-        Py_XINCREF(old_tb);
-        __Pyx_ErrRestore(old_exc, old_val, old_tb);
-        PyErr_PrintEx(1);
-    }
     #if PY_MAJOR_VERSION < 3
     ctx = PyString_FromString(name);
     #else
@@ -28940,44 +28314,6 @@ static CYTHON_INLINE PyObject *__Pyx_PyIter_Next2(PyObject* iterator, PyObject*
     return NULL;
 }
 
-static PyTypeObject* __Pyx_FetchCommonType(PyTypeObject* type) {
-    PyObject* fake_module;
-    PyTypeObject* cached_type = NULL;
-    fake_module = PyImport_AddModule((char*) "_cython_" CYTHON_ABI);
-    if (!fake_module) return NULL;
-    Py_INCREF(fake_module);
-    cached_type = (PyTypeObject*) PyObject_GetAttrString(fake_module, type->tp_name);
-    if (cached_type) {
-        if (!PyType_Check((PyObject*)cached_type)) {
-            PyErr_Format(PyExc_TypeError,
-                "Shared Cython type %.200s is not a type object",
-                type->tp_name);
-            goto bad;
-        }
-        if (cached_type->tp_basicsize != type->tp_basicsize) {
-            PyErr_Format(PyExc_TypeError,
-                "Shared Cython type %.200s has the wrong size, try recompiling",
-                type->tp_name);
-            goto bad;
-        }
-    } else {
-        if (!PyErr_ExceptionMatches(PyExc_AttributeError)) goto bad;
-        PyErr_Clear();
-        if (PyType_Ready(type) < 0) goto bad;
-        if (PyObject_SetAttrString(fake_module, type->tp_name, (PyObject*) type) < 0)
-            goto bad;
-        Py_INCREF(type);
-        cached_type = type;
-    }
-done:
-    Py_DECREF(fake_module);
-    return cached_type;
-bad:
-    Py_XDECREF(cached_type);
-    cached_type = NULL;
-    goto done;
-}
-
 static PyObject *
 __Pyx_CyFunction_get_doc(__pyx_CyFunctionObject *op, CYTHON_UNUSED void *closure)
 {
@@ -29110,10 +28446,11 @@ __Pyx_CyFunction_set_dict(__pyx_CyFunctionObject *op, PyObject *value)
     return 0;
 }
 static PyObject *
-__Pyx_CyFunction_get_globals(__pyx_CyFunctionObject *op)
+__Pyx_CyFunction_get_globals(CYTHON_UNUSED __pyx_CyFunctionObject *op)
 {
-    Py_INCREF(op->func_globals);
-    return op->func_globals;
+    PyObject* dict = PyModule_GetDict(__pyx_m);
+    Py_XINCREF(dict);
+    return dict;
 }
 static PyObject *
 __Pyx_CyFunction_get_closure(CYTHON_UNUSED __pyx_CyFunctionObject *op)
@@ -29269,7 +28606,7 @@ static PyMethodDef __pyx_CyFunction_methods[] = {
     {0, 0, 0, 0}
 };
 static PyObject *__Pyx_CyFunction_New(PyTypeObject *type, PyMethodDef *ml, int flags, PyObject* qualname,
-                                      PyObject *closure, PyObject *module, PyObject* globals, PyObject* code) {
+                                      PyObject *closure, PyObject *module, PyObject* code) {
     __pyx_CyFunctionObject *op = PyObject_GC_New(__pyx_CyFunctionObject, type);
     if (op == NULL)
         return NULL;
@@ -29287,8 +28624,6 @@ static PyObject *__Pyx_CyFunction_New(PyTypeObject *type, PyMethodDef *ml, int f
     op->func_qualname = qualname;
     op->func_doc = NULL;
     op->func_classobj = NULL;
-    op->func_globals = globals;
-    Py_INCREF(op->func_globals);
     Py_XINCREF(code);
     op->func_code = code;
     op->defaults_pyobjects = 0;
@@ -29309,7 +28644,6 @@ __Pyx_CyFunction_clear(__pyx_CyFunctionObject *m)
     Py_CLEAR(m->func_name);
     Py_CLEAR(m->func_qualname);
     Py_CLEAR(m->func_doc);
-    Py_CLEAR(m->func_globals);
     Py_CLEAR(m->func_code);
     Py_CLEAR(m->func_classobj);
     Py_CLEAR(m->defaults_tuple);
@@ -29341,7 +28675,6 @@ static int __Pyx_CyFunction_traverse(__pyx_CyFunctionObject *m, visitproc visit,
     Py_VISIT(m->func_name);
     Py_VISIT(m->func_qualname);
     Py_VISIT(m->func_doc);
-    Py_VISIT(m->func_globals);
     Py_VISIT(m->func_code);
     Py_VISIT(m->func_classobj);
     Py_VISIT(m->defaults_tuple);
@@ -29486,18 +28819,14 @@ static PyTypeObject __pyx_CyFunctionType_type = {
 #if PY_VERSION_HEX >= 0x02060000
     0,                                  /*tp_version_tag*/
 #endif
-#if PY_VERSION_HEX >= 0x030400a1
-    0,                                  /*tp_finalize*/
-#endif
 };
 static int __Pyx_CyFunction_init(void) {
 #if !CYTHON_COMPILING_IN_PYPY
     __pyx_CyFunctionType_type.tp_call = PyCFunction_Call;
 #endif
-    __pyx_CyFunctionType = __Pyx_FetchCommonType(&__pyx_CyFunctionType_type);
-    if (__pyx_CyFunctionType == NULL) {
+    if (PyType_Ready(&__pyx_CyFunctionType_type) < 0)
         return -1;
-    }
+    __pyx_CyFunctionType = &__pyx_CyFunctionType_type;
     return 0;
 }
 static CYTHON_INLINE void *__Pyx_CyFunction_InitDefaults(PyObject *func, size_t size, int pyobjects) {
@@ -29546,134 +28875,12 @@ static PyObject* __Pyx_PyDict_GetItemDefault(PyObject* d, PyObject* key, PyObjec
         if (default_value == Py_None)
             default_value = NULL;
         value = PyObject_CallMethodObjArgs(
-            d, __pyx_n_s_get, key, default_value, NULL);
+            d, __pyx_n_s__get, key, default_value, NULL);
     }
 #endif
     return value;
 }
 
-static CYTHON_INLINE int __Pyx_PyBytes_Equals(PyObject* s1, PyObject* s2, int equals) {
-#if CYTHON_COMPILING_IN_PYPY
-    return PyObject_RichCompareBool(s1, s2, equals);
-#else
-    if (s1 == s2) {
-        return (equals == Py_EQ);
-    } else if (PyBytes_CheckExact(s1) & PyBytes_CheckExact(s2)) {
-        const char *ps1, *ps2;
-        Py_ssize_t length = PyBytes_GET_SIZE(s1);
-        if (length != PyBytes_GET_SIZE(s2))
-            return (equals == Py_NE);
-        ps1 = PyBytes_AS_STRING(s1);
-        ps2 = PyBytes_AS_STRING(s2);
-        if (ps1[0] != ps2[0]) {
-            return (equals == Py_NE);
-        } else if (length == 1) {
-            return (equals == Py_EQ);
-        } else {
-            int result = memcmp(ps1, ps2, (size_t)length);
-            return (equals == Py_EQ) ? (result == 0) : (result != 0);
-        }
-    } else if ((s1 == Py_None) & PyBytes_CheckExact(s2)) {
-        return (equals == Py_NE);
-    } else if ((s2 == Py_None) & PyBytes_CheckExact(s1)) {
-        return (equals == Py_NE);
-    } else {
-        int result;
-        PyObject* py_result = PyObject_RichCompare(s1, s2, equals);
-        if (!py_result)
-            return -1;
-        result = __Pyx_PyObject_IsTrue(py_result);
-        Py_DECREF(py_result);
-        return result;
-    }
-#endif
-}
-
-static CYTHON_INLINE int __Pyx_PyUnicode_Equals(PyObject* s1, PyObject* s2, int equals) {
-#if CYTHON_COMPILING_IN_PYPY
-    return PyObject_RichCompareBool(s1, s2, equals);
-#else
-#if PY_MAJOR_VERSION < 3
-    PyObject* owned_ref = NULL;
-#endif
-    int s1_is_unicode, s2_is_unicode;
-    if (s1 == s2) {
-        goto return_eq;
-    }
-    s1_is_unicode = PyUnicode_CheckExact(s1);
-    s2_is_unicode = PyUnicode_CheckExact(s2);
-#if PY_MAJOR_VERSION < 3
-    if ((s1_is_unicode & (!s2_is_unicode)) && PyString_CheckExact(s2)) {
-        owned_ref = PyUnicode_FromObject(s2);
-        if (unlikely(!owned_ref))
-            return -1;
-        s2 = owned_ref;
-        s2_is_unicode = 1;
-    } else if ((s2_is_unicode & (!s1_is_unicode)) && PyString_CheckExact(s1)) {
-        owned_ref = PyUnicode_FromObject(s1);
-        if (unlikely(!owned_ref))
-            return -1;
-        s1 = owned_ref;
-        s1_is_unicode = 1;
-    } else if (((!s2_is_unicode) & (!s1_is_unicode))) {
-        return __Pyx_PyBytes_Equals(s1, s2, equals);
-    }
-#endif
-    if (s1_is_unicode & s2_is_unicode) {
-        Py_ssize_t length;
-        int kind;
-        void *data1, *data2;
-        #if CYTHON_PEP393_ENABLED
-        if (unlikely(PyUnicode_READY(s1) < 0) || unlikely(PyUnicode_READY(s2) < 0))
-            return -1;
-        #endif
-        length = __Pyx_PyUnicode_GET_LENGTH(s1);
-        if (length != __Pyx_PyUnicode_GET_LENGTH(s2)) {
-            goto return_ne;
-        }
-        kind = __Pyx_PyUnicode_KIND(s1);
-        if (kind != __Pyx_PyUnicode_KIND(s2)) {
-            goto return_ne;
-        }
-        data1 = __Pyx_PyUnicode_DATA(s1);
-        data2 = __Pyx_PyUnicode_DATA(s2);
-        if (__Pyx_PyUnicode_READ(kind, data1, 0) != __Pyx_PyUnicode_READ(kind, data2, 0)) {
-            goto return_ne;
-        } else if (length == 1) {
-            goto return_eq;
-        } else {
-            int result = memcmp(data1, data2, length * kind);
-            #if PY_MAJOR_VERSION < 3
-            Py_XDECREF(owned_ref);
-            #endif
-            return (equals == Py_EQ) ? (result == 0) : (result != 0);
-        }
-    } else if ((s1 == Py_None) & s2_is_unicode) {
-        goto return_ne;
-    } else if ((s2 == Py_None) & s1_is_unicode) {
-        goto return_ne;
-    } else {
-        int result;
-        PyObject* py_result = PyObject_RichCompare(s1, s2, equals);
-        if (!py_result)
-            return -1;
-        result = __Pyx_PyObject_IsTrue(py_result);
-        Py_DECREF(py_result);
-        return result;
-    }
-return_eq:
-    #if PY_MAJOR_VERSION < 3
-    Py_XDECREF(owned_ref);
-    #endif
-    return (equals == Py_EQ);
-return_ne:
-    #if PY_MAJOR_VERSION < 3
-    Py_XDECREF(owned_ref);
-    #endif
-    return (equals == Py_NE);
-#endif
-}
-
 static double __Pyx__PyObject_AsDouble(PyObject* obj) {
     PyObject* float_value;
 #if CYTHON_COMPILING_IN_PYPY
@@ -29713,6 +28920,63 @@ bad:
     return (double)-1;
 }
 
+static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb) {
+    PyObject *local_type, *local_value, *local_tb;
+#if CYTHON_COMPILING_IN_CPYTHON
+    PyObject *tmp_type, *tmp_value, *tmp_tb;
+    PyThreadState *tstate = PyThreadState_GET();
+    local_type = tstate->curexc_type;
+    local_value = tstate->curexc_value;
+    local_tb = tstate->curexc_traceback;
+    tstate->curexc_type = 0;
+    tstate->curexc_value = 0;
+    tstate->curexc_traceback = 0;
+#else
+    PyErr_Fetch(&local_type, &local_value, &local_tb);
+#endif
+    PyErr_NormalizeException(&local_type, &local_value, &local_tb);
+#if CYTHON_COMPILING_IN_CPYTHON
+    if (unlikely(tstate->curexc_type))
+#else
+    if (unlikely(PyErr_Occurred()))
+#endif
+        goto bad;
+    #if PY_MAJOR_VERSION >= 3
+    if (unlikely(PyException_SetTraceback(local_value, local_tb) < 0))
+        goto bad;
+    #endif
+    Py_INCREF(local_type);
+    Py_INCREF(local_value);
+    Py_INCREF(local_tb);
+    *type = local_type;
+    *value = local_value;
+    *tb = local_tb;
+#if CYTHON_COMPILING_IN_CPYTHON
+    tmp_type = tstate->exc_type;
+    tmp_value = tstate->exc_value;
+    tmp_tb = tstate->exc_traceback;
+    tstate->exc_type = local_type;
+    tstate->exc_value = local_value;
+    tstate->exc_traceback = local_tb;
+    /* Make sure tstate is in a consistent state when we XDECREF
+       these objects (DECREF may run arbitrary code). */
+    Py_XDECREF(tmp_type);
+    Py_XDECREF(tmp_value);
+    Py_XDECREF(tmp_tb);
+#else
+    PyErr_SetExcInfo(local_type, local_value, local_tb);
+#endif
+    return 0;
+bad:
+    *type = 0;
+    *value = 0;
+    *tb = 0;
+    Py_XDECREF(local_type);
+    Py_XDECREF(local_value);
+    Py_XDECREF(local_tb);
+    return -1;
+}
+
 static int __Pyx_SetVtable(PyObject *dict, void *vtable) {
 #if PY_VERSION_HEX >= 0x02070000 && !(PY_MAJOR_VERSION==3&&PY_MINOR_VERSION==0)
     PyObject *ob = PyCapsule_New(vtable, 0, 0);
@@ -29721,7 +28985,7 @@ static int __Pyx_SetVtable(PyObject *dict, void *vtable) {
 #endif
     if (!ob)
         goto bad;
-    if (PyDict_SetItem(dict, __pyx_n_s_pyx_vtable, ob) < 0)
+    if (PyDict_SetItem(dict, __pyx_n_s____pyx_vtable__, ob) < 0)
         goto bad;
     Py_DECREF(ob);
     return 0;
@@ -29732,7 +28996,7 @@ bad:
 
 static void* __Pyx_GetVtable(PyObject *dict) {
     void* ptr;
-    PyObject *ob = PyObject_GetItem(dict, __pyx_n_s_pyx_vtable);
+    PyObject *ob = PyObject_GetItem(dict, __pyx_n_s____pyx_vtable__);
     if (!ob)
         goto bad;
 #if PY_VERSION_HEX >= 0x02070000 && !(PY_MAJOR_VERSION==3&&PY_MINOR_VERSION==0)
@@ -29749,350 +29013,35 @@ bad:
     return NULL;
 }
 
-static PyObject *__Pyx_CalculateMetaclass(PyTypeObject *metaclass, PyObject *bases) {
-    Py_ssize_t i, nbases = PyTuple_GET_SIZE(bases);
-    for (i=0; i < nbases; i++) {
-        PyTypeObject *tmptype;
-        PyObject *tmp = PyTuple_GET_ITEM(bases, i);
-        tmptype = Py_TYPE(tmp);
-#if PY_MAJOR_VERSION < 3
-        if (tmptype == &PyClass_Type)
-            continue;
-#endif
-        if (!metaclass) {
-            metaclass = tmptype;
-            continue;
-        }
-        if (PyType_IsSubtype(metaclass, tmptype))
-            continue;
-        if (PyType_IsSubtype(tmptype, metaclass)) {
-            metaclass = tmptype;
-            continue;
-        }
-        PyErr_SetString(PyExc_TypeError,
-                        "metaclass conflict: "
-                        "the metaclass of a derived class "
-                        "must be a (non-strict) subclass "
-                        "of the metaclasses of all its bases");
-        return NULL;
-    }
-    if (!metaclass) {
-#if PY_MAJOR_VERSION < 3
-        metaclass = &PyClass_Type;
-#else
-        metaclass = &PyType_Type;
-#endif
-    }
-    Py_INCREF((PyObject*) metaclass);
-    return (PyObject*) metaclass;
-}
-
-static PyObject *__Pyx_Py3MetaclassPrepare(PyObject *metaclass, PyObject *bases, PyObject *name,
-                                           PyObject *qualname, PyObject *mkw, PyObject *modname, PyObject *doc) {
-    PyObject *ns;
-    if (metaclass) {
-        PyObject *prep = __Pyx_PyObject_GetAttrStr(metaclass, __pyx_n_s_prepare);
-        if (prep) {
-            PyObject *pargs = PyTuple_Pack(2, name, bases);
-            if (unlikely(!pargs)) {
-                Py_DECREF(prep);
-                return NULL;
-            }
-            ns = PyObject_Call(prep, pargs, mkw);
-            Py_DECREF(prep);
-            Py_DECREF(pargs);
-        } else {
-            if (unlikely(!PyErr_ExceptionMatches(PyExc_AttributeError)))
-                return NULL;
-            PyErr_Clear();
-            ns = PyDict_New();
-        }
-    } else {
-        ns = PyDict_New();
-    }
-    if (unlikely(!ns))
-        return NULL;
-    if (unlikely(PyObject_SetItem(ns, __pyx_n_s_module, modname) < 0)) goto bad;
-    if (unlikely(PyObject_SetItem(ns, __pyx_n_s_qualname, qualname) < 0)) goto bad;
-    if (unlikely(doc && PyObject_SetItem(ns, __pyx_n_s_doc, doc) < 0)) goto bad;
-    return ns;
-bad:
-    Py_DECREF(ns);
-    return NULL;
-}
-static PyObject *__Pyx_Py3ClassCreate(PyObject *metaclass, PyObject *name, PyObject *bases,
-                                      PyObject *dict, PyObject *mkw,
-                                      int calculate_metaclass, int allow_py2_metaclass) {
-    PyObject *result, *margs;
-    PyObject *owned_metaclass = NULL;
-    if (allow_py2_metaclass) {
-        owned_metaclass = PyObject_GetItem(dict, __pyx_n_s_metaclass);
-        if (owned_metaclass) {
-            metaclass = owned_metaclass;
-        } else if (likely(PyErr_ExceptionMatches(PyExc_KeyError))) {
-            PyErr_Clear();
-        } else {
-            return NULL;
-        }
-    }
-    if (calculate_metaclass && (!metaclass || PyType_Check(metaclass))) {
-        metaclass = __Pyx_CalculateMetaclass((PyTypeObject*) metaclass, bases);
-        Py_XDECREF(owned_metaclass);
-        if (unlikely(!metaclass))
-            return NULL;
-        owned_metaclass = metaclass;
-    }
-    margs = PyTuple_Pack(3, name, bases, dict);
-    if (unlikely(!margs)) {
-        result = NULL;
-    } else {
-        result = PyObject_Call(metaclass, margs, mkw);
-        Py_DECREF(margs);
-    }
-    Py_XDECREF(owned_metaclass);
-    return result;
-}
-
-static CYTHON_INLINE PyObject* __Pyx_PyInt_From_unsigned_int(unsigned int value) {
-    const unsigned int neg_one = (unsigned int) -1, const_zero = 0;
-    const int is_unsigned = neg_one > const_zero;
-    if (is_unsigned) {
-        if (sizeof(unsigned int) < sizeof(long)) {
-            return PyInt_FromLong((long) value);
-        } else if (sizeof(unsigned int) <= sizeof(unsigned long)) {
-            return PyLong_FromUnsignedLong((unsigned long) value);
-        } else if (sizeof(unsigned int) <= sizeof(unsigned long long)) {
-            return PyLong_FromUnsignedLongLong((unsigned long long) value);
-        }
-    } else {
-        if (sizeof(unsigned int) <= sizeof(long)) {
-            return PyInt_FromLong((long) value);
-        } else if (sizeof(unsigned int) <= sizeof(long long)) {
-            return PyLong_FromLongLong((long long) value);
-        }
-    }
-    {
-        int one = 1; int little = (int)*(unsigned char *)&one;
-        unsigned char *bytes = (unsigned char *)&value;
-        return _PyLong_FromByteArray(bytes, sizeof(unsigned int),
-                                     little, !is_unsigned);
-    }
-}
-
-#define __PYX_VERIFY_RETURN_INT(target_type, func_type, func)             \
-    {                                                                     \
-        func_type value = func(x);                                        \
-        if (sizeof(target_type) < sizeof(func_type)) {                    \
-            if (unlikely(value != (func_type) (target_type) value)) {     \
-                func_type zero = 0;                                       \
-                PyErr_SetString(PyExc_OverflowError,                      \
-                    (is_unsigned && unlikely(value < zero)) ?             \
-                    "can't convert negative value to " #target_type :     \
-                    "value too large to convert to " #target_type);       \
-                return (target_type) -1;                                  \
-            }                                                             \
-        }                                                                 \
-        return (target_type) value;                                       \
-    }
-
-#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
- #if CYTHON_USE_PYLONG_INTERNALS
-  #include "longintrepr.h"
- #endif
-#endif
-static CYTHON_INLINE unsigned int __Pyx_PyInt_As_unsigned_int(PyObject *x) {
-    const unsigned int neg_one = (unsigned int) -1, const_zero = 0;
-    const int is_unsigned = neg_one > const_zero;
-#if PY_MAJOR_VERSION < 3
-    if (likely(PyInt_Check(x))) {
-        if (sizeof(unsigned int) < sizeof(long)) {
-            __PYX_VERIFY_RETURN_INT(unsigned int, long, PyInt_AS_LONG)
-        } else {
-            long val = PyInt_AS_LONG(x);
-            if (is_unsigned && unlikely(val < 0)) {
-                PyErr_SetString(PyExc_OverflowError,
-                                "can't convert negative value to unsigned int");
-                return (unsigned int) -1;
-            }
-            return (unsigned int) val;
-        }
-    } else
-#endif
-    if (likely(PyLong_Check(x))) {
-        if (is_unsigned) {
-#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
- #if CYTHON_USE_PYLONG_INTERNALS
-            if (sizeof(digit) <= sizeof(unsigned int)) {
-                switch (Py_SIZE(x)) {
-                    case  0: return 0;
-                    case  1: return (unsigned int) ((PyLongObject*)x)->ob_digit[0];
-                }
-            }
- #endif
-#endif
-            if (unlikely(Py_SIZE(x) < 0)) {
-                PyErr_SetString(PyExc_OverflowError,
-                                "can't convert negative value to unsigned int");
-                return (unsigned int) -1;
-            }
-            if (sizeof(unsigned int) <= sizeof(unsigned long)) {
-                __PYX_VERIFY_RETURN_INT(unsigned int, unsigned long, PyLong_AsUnsignedLong)
-            } else if (sizeof(unsigned int) <= sizeof(unsigned long long)) {
-                __PYX_VERIFY_RETURN_INT(unsigned int, unsigned long long, PyLong_AsUnsignedLongLong)
-            }
-        } else {
-#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
- #if CYTHON_USE_PYLONG_INTERNALS
-            if (sizeof(digit) <= sizeof(unsigned int)) {
-                switch (Py_SIZE(x)) {
-                    case  0: return 0;
-                    case  1: return +(unsigned int) ((PyLongObject*)x)->ob_digit[0];
-                    case -1: return -(unsigned int) ((PyLongObject*)x)->ob_digit[0];
-                }
-            }
- #endif
-#endif
-            if (sizeof(unsigned int) <= sizeof(long)) {
-                __PYX_VERIFY_RETURN_INT(unsigned int, long, PyLong_AsLong)
-            } else if (sizeof(unsigned int) <= sizeof(long long)) {
-                __PYX_VERIFY_RETURN_INT(unsigned int, long long, PyLong_AsLongLong)
-            }
-        }
-        {
-#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
-            PyErr_SetString(PyExc_RuntimeError,
-                            "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
+static CYTHON_INLINE void __Pyx_ExceptionSave(PyObject **type, PyObject **value, PyObject **tb) {
+#if CYTHON_COMPILING_IN_CPYTHON
+    PyThreadState *tstate = PyThreadState_GET();
+    *type = tstate->exc_type;
+    *value = tstate->exc_value;
+    *tb = tstate->exc_traceback;
+    Py_XINCREF(*type);
+    Py_XINCREF(*value);
+    Py_XINCREF(*tb);
 #else
-            unsigned int val;
-            PyObject *v = __Pyx_PyNumber_Int(x);
- #if PY_MAJOR_VERSION < 3
-            if (likely(v) && !PyLong_Check(v)) {
-                PyObject *tmp = v;
-                v = PyNumber_Long(tmp);
-                Py_DECREF(tmp);
-            }
- #endif
-            if (likely(v)) {
-                int one = 1; int is_little = (int)*(unsigned char *)&one;
-                unsigned char *bytes = (unsigned char *)&val;
-                int ret = _PyLong_AsByteArray((PyLongObject *)v,
-                                              bytes, sizeof(val),
-                                              is_little, !is_unsigned);
-                Py_DECREF(v);
-                if (likely(!ret))
-                    return val;
-            }
+    PyErr_GetExcInfo(type, value, tb);
 #endif
-            return (unsigned int) -1;
-        }
-    } else {
-        unsigned int val;
-        PyObject *tmp = __Pyx_PyNumber_Int(x);
-        if (!tmp) return (unsigned int) -1;
-        val = __Pyx_PyInt_As_unsigned_int(tmp);
-        Py_DECREF(tmp);
-        return val;
-    }
 }
-
-#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
- #if CYTHON_USE_PYLONG_INTERNALS
-  #include "longintrepr.h"
- #endif
-#endif
-static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *x) {
-    const int neg_one = (int) -1, const_zero = 0;
-    const int is_unsigned = neg_one > const_zero;
-#if PY_MAJOR_VERSION < 3
-    if (likely(PyInt_Check(x))) {
-        if (sizeof(int) < sizeof(long)) {
-            __PYX_VERIFY_RETURN_INT(int, long, PyInt_AS_LONG)
-        } else {
-            long val = PyInt_AS_LONG(x);
-            if (is_unsigned && unlikely(val < 0)) {
-                PyErr_SetString(PyExc_OverflowError,
-                                "can't convert negative value to int");
-                return (int) -1;
-            }
-            return (int) val;
-        }
-    } else
-#endif
-    if (likely(PyLong_Check(x))) {
-        if (is_unsigned) {
-#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
- #if CYTHON_USE_PYLONG_INTERNALS
-            if (sizeof(digit) <= sizeof(int)) {
-                switch (Py_SIZE(x)) {
-                    case  0: return 0;
-                    case  1: return (int) ((PyLongObject*)x)->ob_digit[0];
-                }
-            }
- #endif
-#endif
-            if (unlikely(Py_SIZE(x) < 0)) {
-                PyErr_SetString(PyExc_OverflowError,
-                                "can't convert negative value to int");
-                return (int) -1;
-            }
-            if (sizeof(int) <= sizeof(unsigned long)) {
-                __PYX_VERIFY_RETURN_INT(int, unsigned long, PyLong_AsUnsignedLong)
-            } else if (sizeof(int) <= sizeof(unsigned long long)) {
-                __PYX_VERIFY_RETURN_INT(int, unsigned long long, PyLong_AsUnsignedLongLong)
-            }
-        } else {
-#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
- #if CYTHON_USE_PYLONG_INTERNALS
-            if (sizeof(digit) <= sizeof(int)) {
-                switch (Py_SIZE(x)) {
-                    case  0: return 0;
-                    case  1: return +(int) ((PyLongObject*)x)->ob_digit[0];
-                    case -1: return -(int) ((PyLongObject*)x)->ob_digit[0];
-                }
-            }
- #endif
-#endif
-            if (sizeof(int) <= sizeof(long)) {
-                __PYX_VERIFY_RETURN_INT(int, long, PyLong_AsLong)
-            } else if (sizeof(int) <= sizeof(long long)) {
-                __PYX_VERIFY_RETURN_INT(int, long long, PyLong_AsLongLong)
-            }
-        }
-        {
-#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
-            PyErr_SetString(PyExc_RuntimeError,
-                            "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
+static void __Pyx_ExceptionReset(PyObject *type, PyObject *value, PyObject *tb) {
+#if CYTHON_COMPILING_IN_CPYTHON
+    PyObject *tmp_type, *tmp_value, *tmp_tb;
+    PyThreadState *tstate = PyThreadState_GET();
+    tmp_type = tstate->exc_type;
+    tmp_value = tstate->exc_value;
+    tmp_tb = tstate->exc_traceback;
+    tstate->exc_type = type;
+    tstate->exc_value = value;
+    tstate->exc_traceback = tb;
+    Py_XDECREF(tmp_type);
+    Py_XDECREF(tmp_value);
+    Py_XDECREF(tmp_tb);
 #else
-            int val;
-            PyObject *v = __Pyx_PyNumber_Int(x);
- #if PY_MAJOR_VERSION < 3
-            if (likely(v) && !PyLong_Check(v)) {
-                PyObject *tmp = v;
-                v = PyNumber_Long(tmp);
-                Py_DECREF(tmp);
-            }
- #endif
-            if (likely(v)) {
-                int one = 1; int is_little = (int)*(unsigned char *)&one;
-                unsigned char *bytes = (unsigned char *)&val;
-                int ret = _PyLong_AsByteArray((PyLongObject *)v,
-                                              bytes, sizeof(val),
-                                              is_little, !is_unsigned);
-                Py_DECREF(v);
-                if (likely(!ret))
-                    return val;
-            }
+    PyErr_SetExcInfo(type, value, tb);
 #endif
-            return (int) -1;
-        }
-    } else {
-        int val;
-        PyObject *tmp = __Pyx_PyNumber_Int(x);
-        if (!tmp) return (int) -1;
-        val = __Pyx_PyInt_As_int(tmp);
-        Py_DECREF(tmp);
-        return val;
-    }
 }
 
 static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, int level) {
@@ -30103,7 +29052,7 @@ static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, int level) {
     PyObject *list;
     #if PY_VERSION_HEX < 0x03030000
     PyObject *py_import;
-    py_import = __Pyx_PyObject_GetAttrStr(__pyx_b, __pyx_n_s_import);
+    py_import = __Pyx_PyObject_GetAttrStr(__pyx_b, __pyx_n_s____import__);
     if (!py_import)
         goto bad;
     #endif
@@ -30177,200 +29126,111 @@ bad:
     return module;
 }
 
-static CYTHON_INLINE PyObject* __Pyx_PyInt_From_int(int value) {
-    const int neg_one = (int) -1, const_zero = 0;
-    const int is_unsigned = neg_one > const_zero;
-    if (is_unsigned) {
-        if (sizeof(int) < sizeof(long)) {
-            return PyInt_FromLong((long) value);
-        } else if (sizeof(int) <= sizeof(unsigned long)) {
-            return PyLong_FromUnsignedLong((unsigned long) value);
-        } else if (sizeof(int) <= sizeof(unsigned long long)) {
-            return PyLong_FromUnsignedLongLong((unsigned long long) value);
+static PyObject *__Pyx_FindPy2Metaclass(PyObject *bases) {
+    PyObject *metaclass;
+#if PY_MAJOR_VERSION < 3
+    if (PyTuple_Check(bases) && PyTuple_GET_SIZE(bases) > 0) {
+        PyObject *base = PyTuple_GET_ITEM(bases, 0);
+        metaclass = __Pyx_PyObject_GetAttrStr(base, __pyx_n_s____class__);
+        if (!metaclass) {
+            PyErr_Clear();
+            metaclass = (PyObject*) Py_TYPE(base);
         }
     } else {
-        if (sizeof(int) <= sizeof(long)) {
-            return PyInt_FromLong((long) value);
-        } else if (sizeof(int) <= sizeof(long long)) {
-            return PyLong_FromLongLong((long long) value);
-        }
-    }
-    {
-        int one = 1; int little = (int)*(unsigned char *)&one;
-        unsigned char *bytes = (unsigned char *)&value;
-        return _PyLong_FromByteArray(bytes, sizeof(int),
-                                     little, !is_unsigned);
+        metaclass = (PyObject *) &PyClass_Type;
     }
-}
-
-static CYTHON_INLINE PyObject* __Pyx_PyInt_From_long(long value) {
-    const long neg_one = (long) -1, const_zero = 0;
-    const int is_unsigned = neg_one > const_zero;
-    if (is_unsigned) {
-        if (sizeof(long) < sizeof(long)) {
-            return PyInt_FromLong((long) value);
-        } else if (sizeof(long) <= sizeof(unsigned long)) {
-            return PyLong_FromUnsignedLong((unsigned long) value);
-        } else if (sizeof(long) <= sizeof(unsigned long long)) {
-            return PyLong_FromUnsignedLongLong((unsigned long long) value);
-        }
+#else
+    if (PyTuple_Check(bases) && PyTuple_GET_SIZE(bases) > 0) {
+        PyObject *base = PyTuple_GET_ITEM(bases, 0);
+        metaclass = (PyObject*) Py_TYPE(base);
     } else {
-        if (sizeof(long) <= sizeof(long)) {
-            return PyInt_FromLong((long) value);
-        } else if (sizeof(long) <= sizeof(long long)) {
-            return PyLong_FromLongLong((long long) value);
-        }
-    }
-    {
-        int one = 1; int little = (int)*(unsigned char *)&one;
-        unsigned char *bytes = (unsigned char *)&value;
-        return _PyLong_FromByteArray(bytes, sizeof(long),
-                                     little, !is_unsigned);
+        metaclass = (PyObject *) &PyType_Type;
     }
+#endif
+    Py_INCREF(metaclass);
+    return metaclass;
 }
 
-#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
- #if CYTHON_USE_PYLONG_INTERNALS
-  #include "longintrepr.h"
- #endif
-#endif
-static CYTHON_INLINE WordID __Pyx_PyInt_As_WordID(PyObject *x) {
-    const WordID neg_one = (WordID) -1, const_zero = 0;
-    const int is_unsigned = neg_one > const_zero;
-#if PY_MAJOR_VERSION < 3
-    if (likely(PyInt_Check(x))) {
-        if (sizeof(WordID) < sizeof(long)) {
-            __PYX_VERIFY_RETURN_INT(WordID, long, PyInt_AS_LONG)
-        } else {
-            long val = PyInt_AS_LONG(x);
-            if (is_unsigned && unlikely(val < 0)) {
-                PyErr_SetString(PyExc_OverflowError,
-                                "can't convert negative value to WordID");
-                return (WordID) -1;
-            }
-            return (WordID) val;
-        }
-    } else
-#endif
-    if (likely(PyLong_Check(x))) {
-        if (is_unsigned) {
-#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
- #if CYTHON_USE_PYLONG_INTERNALS
-            if (sizeof(digit) <= sizeof(WordID)) {
-                switch (Py_SIZE(x)) {
-                    case  0: return 0;
-                    case  1: return (WordID) ((PyLongObject*)x)->ob_digit[0];
-                }
-            }
- #endif
-#endif
-            if (unlikely(Py_SIZE(x) < 0)) {
-                PyErr_SetString(PyExc_OverflowError,
-                                "can't convert negative value to WordID");
-                return (WordID) -1;
-            }
-            if (sizeof(WordID) <= sizeof(unsigned long)) {
-                __PYX_VERIFY_RETURN_INT(WordID, unsigned long, PyLong_AsUnsignedLong)
-            } else if (sizeof(WordID) <= sizeof(unsigned long long)) {
-                __PYX_VERIFY_RETURN_INT(WordID, unsigned long long, PyLong_AsUnsignedLongLong)
-            }
-        } else {
-#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
- #if CYTHON_USE_PYLONG_INTERNALS
-            if (sizeof(digit) <= sizeof(WordID)) {
-                switch (Py_SIZE(x)) {
-                    case  0: return 0;
-                    case  1: return +(WordID) ((PyLongObject*)x)->ob_digit[0];
-                    case -1: return -(WordID) ((PyLongObject*)x)->ob_digit[0];
-                }
-            }
- #endif
-#endif
-            if (sizeof(WordID) <= sizeof(long)) {
-                __PYX_VERIFY_RETURN_INT(WordID, long, PyLong_AsLong)
-            } else if (sizeof(WordID) <= sizeof(long long)) {
-                __PYX_VERIFY_RETURN_INT(WordID, long long, PyLong_AsLongLong)
-            }
-        }
-        {
-#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
-            PyErr_SetString(PyExc_RuntimeError,
-                            "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
-#else
-            WordID val;
-            PyObject *v = __Pyx_PyNumber_Int(x);
- #if PY_MAJOR_VERSION < 3
-            if (likely(v) && !PyLong_Check(v)) {
-                PyObject *tmp = v;
-                v = PyNumber_Long(tmp);
-                Py_DECREF(tmp);
-            }
- #endif
-            if (likely(v)) {
-                int one = 1; int is_little = (int)*(unsigned char *)&one;
-                unsigned char *bytes = (unsigned char *)&val;
-                int ret = _PyLong_AsByteArray((PyLongObject *)v,
-                                              bytes, sizeof(val),
-                                              is_little, !is_unsigned);
-                Py_DECREF(v);
-                if (likely(!ret))
-                    return val;
-            }
-#endif
-            return (WordID) -1;
-        }
+static PyObject *__Pyx_CreateClass(PyObject *bases, PyObject *dict, PyObject *name,
+                                   PyObject *qualname, PyObject *modname) {
+    PyObject *result;
+    PyObject *metaclass;
+    if (PyDict_SetItem(dict, __pyx_n_s____module__, modname) < 0)
+        return NULL;
+    if (PyDict_SetItem(dict, __pyx_n_s____qualname__, qualname) < 0)
+        return NULL;
+    metaclass = PyDict_GetItem(dict, __pyx_n_s____metaclass__);
+    if (metaclass) {
+        Py_INCREF(metaclass);
     } else {
-        WordID val;
-        PyObject *tmp = __Pyx_PyNumber_Int(x);
-        if (!tmp) return (WordID) -1;
-        val = __Pyx_PyInt_As_WordID(tmp);
-        Py_DECREF(tmp);
-        return val;
+        metaclass = __Pyx_FindPy2Metaclass(bases);
     }
+    result = PyObject_CallFunctionObjArgs(metaclass, name, bases, dict, NULL);
+    Py_DECREF(metaclass);
+    return result;
 }
 
-static CYTHON_INLINE PyObject* __Pyx_PyInt_From_short(short value) {
-    const short neg_one = (short) -1, const_zero = 0;
-    const int is_unsigned = neg_one > const_zero;
-    if (is_unsigned) {
-        if (sizeof(short) < sizeof(long)) {
-            return PyInt_FromLong((long) value);
-        } else if (sizeof(short) <= sizeof(unsigned long)) {
-            return PyLong_FromUnsignedLong((unsigned long) value);
-        } else if (sizeof(short) <= sizeof(unsigned long long)) {
-            return PyLong_FromUnsignedLongLong((unsigned long long) value);
+static CYTHON_INLINE WordID __Pyx_PyInt_from_py_WordID(PyObject* x) {
+    const WordID neg_one = (WordID)-1, const_zero = (WordID)0;
+    const int is_unsigned = const_zero < neg_one;
+    if (sizeof(WordID) == sizeof(char)) {
+        if (is_unsigned)
+            return (WordID)__Pyx_PyInt_AsUnsignedChar(x);
+        else
+            return (WordID)__Pyx_PyInt_AsSignedChar(x);
+    } else if (sizeof(WordID) == sizeof(short)) {
+        if (is_unsigned)
+            return (WordID)__Pyx_PyInt_AsUnsignedShort(x);
+        else
+            return (WordID)__Pyx_PyInt_AsSignedShort(x);
+    } else if (sizeof(WordID) == sizeof(int)) {
+        if (is_unsigned)
+            return (WordID)__Pyx_PyInt_AsUnsignedInt(x);
+        else
+            return (WordID)__Pyx_PyInt_AsSignedInt(x);
+    } else if (sizeof(WordID) == sizeof(long)) {
+        if (is_unsigned)
+            return (WordID)__Pyx_PyInt_AsUnsignedLong(x);
+        else
+            return (WordID)__Pyx_PyInt_AsSignedLong(x);
+    } else if (sizeof(WordID) == sizeof(PY_LONG_LONG)) {
+        if (is_unsigned)
+            return (WordID)__Pyx_PyInt_AsUnsignedLongLong(x);
+        else
+            return (WordID)__Pyx_PyInt_AsSignedLongLong(x);
+    }  else {
+        #if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
+        PyErr_SetString(PyExc_RuntimeError,
+                        "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
+        #else
+        WordID val;
+        PyObject *v = __Pyx_PyNumber_Int(x);
+        #if PY_MAJOR_VERSION < 3
+        if (likely(v) && !PyLong_Check(v)) {
+            PyObject *tmp = v;
+            v = PyNumber_Long(tmp);
+            Py_DECREF(tmp);
         }
-    } else {
-        if (sizeof(short) <= sizeof(long)) {
-            return PyInt_FromLong((long) value);
-        } else if (sizeof(short) <= sizeof(long long)) {
-            return PyLong_FromLongLong((long long) value);
+        #endif
+        if (likely(v)) {
+            int one = 1; int is_little = (int)*(unsigned char *)&one;
+            unsigned char *bytes = (unsigned char *)&val;
+            int ret = _PyLong_AsByteArray((PyLongObject *)v,
+                                          bytes, sizeof(val),
+                                          is_little, !is_unsigned);
+            Py_DECREF(v);
+            if (likely(!ret))
+                return val;
         }
-    }
-    {
-        int one = 1; int little = (int)*(unsigned char *)&one;
-        unsigned char *bytes = (unsigned char *)&value;
-        return _PyLong_FromByteArray(bytes, sizeof(short),
-                                     little, !is_unsigned);
+        #endif
+        return (WordID)-1;
     }
 }
 
-static CYTHON_INLINE PyObject *__Pyx_GetAttr(PyObject *o, PyObject *n) {
-#if CYTHON_COMPILING_IN_CPYTHON
-#if PY_MAJOR_VERSION >= 3
-    if (likely(PyUnicode_Check(n)))
-#else
-    if (likely(PyString_Check(n)))
-#endif
-        return __Pyx_PyObject_GetAttrStr(o, n);
-#endif
-    return PyObject_GetAttr(o, n);
-}
-
 static PyObject* __Pyx_Globals(void) {
     Py_ssize_t i;
     PyObject *names = NULL;
-    PyObject *globals = PyObject_GetAttr(__pyx_m, __pyx_n_s_dict);
+    PyObject *globals = PyObject_GetAttr(__pyx_m, __pyx_n_s____dict__);
     if (!globals) {
         PyErr_SetString(PyExc_TypeError,
             "current module must have __dict__ attribute");
@@ -30388,7 +29248,7 @@ static PyObject* __Pyx_Globals(void) {
         PyObject* name = PyList_GET_ITEM(names, i);
 #endif
         if (!PyDict_Contains(globals, name)) {
-            PyObject* value = __Pyx_GetAttr(__pyx_m, name);
+            PyObject* value = PyObject_GetAttr(__pyx_m, name);
             if (!value) {
 #if CYTHON_COMPILING_IN_PYPY
                 Py_DECREF(name);
@@ -30415,54 +29275,358 @@ bad:
     return NULL;
 }
 
+static CYTHON_INLINE unsigned char __Pyx_PyInt_AsUnsignedChar(PyObject* x) {
+    const unsigned char neg_one = (unsigned char)-1, const_zero = 0;
+    const int is_unsigned = neg_one > const_zero;
+    if (sizeof(unsigned char) < sizeof(long)) {
+        long val = __Pyx_PyInt_AsLong(x);
+        if (unlikely(val != (long)(unsigned char)val)) {
+            if (!unlikely(val == -1 && PyErr_Occurred())) {
+                PyErr_SetString(PyExc_OverflowError,
+                    (is_unsigned && unlikely(val < 0)) ?
+                    "can't convert negative value to unsigned char" :
+                    "value too large to convert to unsigned char");
+            }
+            return (unsigned char)-1;
+        }
+        return (unsigned char)val;
+    }
+    return (unsigned char)__Pyx_PyInt_AsUnsignedLong(x);
+}
+
+static CYTHON_INLINE unsigned short __Pyx_PyInt_AsUnsignedShort(PyObject* x) {
+    const unsigned short neg_one = (unsigned short)-1, const_zero = 0;
+    const int is_unsigned = neg_one > const_zero;
+    if (sizeof(unsigned short) < sizeof(long)) {
+        long val = __Pyx_PyInt_AsLong(x);
+        if (unlikely(val != (long)(unsigned short)val)) {
+            if (!unlikely(val == -1 && PyErr_Occurred())) {
+                PyErr_SetString(PyExc_OverflowError,
+                    (is_unsigned && unlikely(val < 0)) ?
+                    "can't convert negative value to unsigned short" :
+                    "value too large to convert to unsigned short");
+            }
+            return (unsigned short)-1;
+        }
+        return (unsigned short)val;
+    }
+    return (unsigned short)__Pyx_PyInt_AsUnsignedLong(x);
+}
+
+static CYTHON_INLINE unsigned int __Pyx_PyInt_AsUnsignedInt(PyObject* x) {
+    const unsigned int neg_one = (unsigned int)-1, const_zero = 0;
+    const int is_unsigned = neg_one > const_zero;
+    if (sizeof(unsigned int) < sizeof(long)) {
+        long val = __Pyx_PyInt_AsLong(x);
+        if (unlikely(val != (long)(unsigned int)val)) {
+            if (!unlikely(val == -1 && PyErr_Occurred())) {
+                PyErr_SetString(PyExc_OverflowError,
+                    (is_unsigned && unlikely(val < 0)) ?
+                    "can't convert negative value to unsigned int" :
+                    "value too large to convert to unsigned int");
+            }
+            return (unsigned int)-1;
+        }
+        return (unsigned int)val;
+    }
+    return (unsigned int)__Pyx_PyInt_AsUnsignedLong(x);
+}
+
+static CYTHON_INLINE char __Pyx_PyInt_AsChar(PyObject* x) {
+    const char neg_one = (char)-1, const_zero = 0;
+    const int is_unsigned = neg_one > const_zero;
+    if (sizeof(char) < sizeof(long)) {
+        long val = __Pyx_PyInt_AsLong(x);
+        if (unlikely(val != (long)(char)val)) {
+            if (!unlikely(val == -1 && PyErr_Occurred())) {
+                PyErr_SetString(PyExc_OverflowError,
+                    (is_unsigned && unlikely(val < 0)) ?
+                    "can't convert negative value to char" :
+                    "value too large to convert to char");
+            }
+            return (char)-1;
+        }
+        return (char)val;
+    }
+    return (char)__Pyx_PyInt_AsLong(x);
+}
+
+static CYTHON_INLINE short __Pyx_PyInt_AsShort(PyObject* x) {
+    const short neg_one = (short)-1, const_zero = 0;
+    const int is_unsigned = neg_one > const_zero;
+    if (sizeof(short) < sizeof(long)) {
+        long val = __Pyx_PyInt_AsLong(x);
+        if (unlikely(val != (long)(short)val)) {
+            if (!unlikely(val == -1 && PyErr_Occurred())) {
+                PyErr_SetString(PyExc_OverflowError,
+                    (is_unsigned && unlikely(val < 0)) ?
+                    "can't convert negative value to short" :
+                    "value too large to convert to short");
+            }
+            return (short)-1;
+        }
+        return (short)val;
+    }
+    return (short)__Pyx_PyInt_AsLong(x);
+}
+
+static CYTHON_INLINE int __Pyx_PyInt_AsInt(PyObject* x) {
+    const int neg_one = (int)-1, const_zero = 0;
+    const int is_unsigned = neg_one > const_zero;
+    if (sizeof(int) < sizeof(long)) {
+        long val = __Pyx_PyInt_AsLong(x);
+        if (unlikely(val != (long)(int)val)) {
+            if (!unlikely(val == -1 && PyErr_Occurred())) {
+                PyErr_SetString(PyExc_OverflowError,
+                    (is_unsigned && unlikely(val < 0)) ?
+                    "can't convert negative value to int" :
+                    "value too large to convert to int");
+            }
+            return (int)-1;
+        }
+        return (int)val;
+    }
+    return (int)__Pyx_PyInt_AsLong(x);
+}
+
+static CYTHON_INLINE signed char __Pyx_PyInt_AsSignedChar(PyObject* x) {
+    const signed char neg_one = (signed char)-1, const_zero = 0;
+    const int is_unsigned = neg_one > const_zero;
+    if (sizeof(signed char) < sizeof(long)) {
+        long val = __Pyx_PyInt_AsLong(x);
+        if (unlikely(val != (long)(signed char)val)) {
+            if (!unlikely(val == -1 && PyErr_Occurred())) {
+                PyErr_SetString(PyExc_OverflowError,
+                    (is_unsigned && unlikely(val < 0)) ?
+                    "can't convert negative value to signed char" :
+                    "value too large to convert to signed char");
+            }
+            return (signed char)-1;
+        }
+        return (signed char)val;
+    }
+    return (signed char)__Pyx_PyInt_AsSignedLong(x);
+}
+
+static CYTHON_INLINE signed short __Pyx_PyInt_AsSignedShort(PyObject* x) {
+    const signed short neg_one = (signed short)-1, const_zero = 0;
+    const int is_unsigned = neg_one > const_zero;
+    if (sizeof(signed short) < sizeof(long)) {
+        long val = __Pyx_PyInt_AsLong(x);
+        if (unlikely(val != (long)(signed short)val)) {
+            if (!unlikely(val == -1 && PyErr_Occurred())) {
+                PyErr_SetString(PyExc_OverflowError,
+                    (is_unsigned && unlikely(val < 0)) ?
+                    "can't convert negative value to signed short" :
+                    "value too large to convert to signed short");
+            }
+            return (signed short)-1;
+        }
+        return (signed short)val;
+    }
+    return (signed short)__Pyx_PyInt_AsSignedLong(x);
+}
+
+static CYTHON_INLINE signed int __Pyx_PyInt_AsSignedInt(PyObject* x) {
+    const signed int neg_one = (signed int)-1, const_zero = 0;
+    const int is_unsigned = neg_one > const_zero;
+    if (sizeof(signed int) < sizeof(long)) {
+        long val = __Pyx_PyInt_AsLong(x);
+        if (unlikely(val != (long)(signed int)val)) {
+            if (!unlikely(val == -1 && PyErr_Occurred())) {
+                PyErr_SetString(PyExc_OverflowError,
+                    (is_unsigned && unlikely(val < 0)) ?
+                    "can't convert negative value to signed int" :
+                    "value too large to convert to signed int");
+            }
+            return (signed int)-1;
+        }
+        return (signed int)val;
+    }
+    return (signed int)__Pyx_PyInt_AsSignedLong(x);
+}
+
+static CYTHON_INLINE int __Pyx_PyInt_AsLongDouble(PyObject* x) {
+    const int neg_one = (int)-1, const_zero = 0;
+    const int is_unsigned = neg_one > const_zero;
+    if (sizeof(int) < sizeof(long)) {
+        long val = __Pyx_PyInt_AsLong(x);
+        if (unlikely(val != (long)(int)val)) {
+            if (!unlikely(val == -1 && PyErr_Occurred())) {
+                PyErr_SetString(PyExc_OverflowError,
+                    (is_unsigned && unlikely(val < 0)) ?
+                    "can't convert negative value to int" :
+                    "value too large to convert to int");
+            }
+            return (int)-1;
+        }
+        return (int)val;
+    }
+    return (int)__Pyx_PyInt_AsLong(x);
+}
+
 #if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
- #if CYTHON_USE_PYLONG_INTERNALS
-  #include "longintrepr.h"
- #endif
+#if CYTHON_USE_PYLONG_INTERNALS
+#include "longintrepr.h"
+#endif
 #endif
-static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) {
-    const long neg_one = (long) -1, const_zero = 0;
+static CYTHON_INLINE unsigned long __Pyx_PyInt_AsUnsignedLong(PyObject* x) {
+    const unsigned long neg_one = (unsigned long)-1, const_zero = 0;
     const int is_unsigned = neg_one > const_zero;
 #if PY_MAJOR_VERSION < 3
     if (likely(PyInt_Check(x))) {
-        if (sizeof(long) < sizeof(long)) {
-            __PYX_VERIFY_RETURN_INT(long, long, PyInt_AS_LONG)
+        long val = PyInt_AS_LONG(x);
+        if (is_unsigned && unlikely(val < 0)) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "can't convert negative value to unsigned long");
+            return (unsigned long)-1;
+        }
+        return (unsigned long)val;
+    } else
+#endif
+    if (likely(PyLong_Check(x))) {
+        if (is_unsigned) {
+#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
+#if CYTHON_USE_PYLONG_INTERNALS
+            if (sizeof(digit) <= sizeof(unsigned long)) {
+                switch (Py_SIZE(x)) {
+                    case  0: return 0;
+                    case  1: return (unsigned long) ((PyLongObject*)x)->ob_digit[0];
+                }
+            }
+#endif
+#endif
+            if (unlikely(Py_SIZE(x) < 0)) {
+                PyErr_SetString(PyExc_OverflowError,
+                                "can't convert negative value to unsigned long");
+                return (unsigned long)-1;
+            }
+            return (unsigned long)PyLong_AsUnsignedLong(x);
         } else {
-            long val = PyInt_AS_LONG(x);
-            if (is_unsigned && unlikely(val < 0)) {
+#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
+#if CYTHON_USE_PYLONG_INTERNALS
+            if (sizeof(digit) <= sizeof(unsigned long)) {
+                switch (Py_SIZE(x)) {
+                    case  0: return 0;
+                    case  1: return +(unsigned long) ((PyLongObject*)x)->ob_digit[0];
+                    case -1: return -(unsigned long) ((PyLongObject*)x)->ob_digit[0];
+                }
+            }
+#endif
+#endif
+            return (unsigned long)PyLong_AsLong(x);
+        }
+    } else {
+        unsigned long val;
+        PyObject *tmp = __Pyx_PyNumber_Int(x);
+        if (!tmp) return (unsigned long)-1;
+        val = __Pyx_PyInt_AsUnsignedLong(tmp);
+        Py_DECREF(tmp);
+        return val;
+    }
+}
+
+#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
+#if CYTHON_USE_PYLONG_INTERNALS
+#include "longintrepr.h"
+#endif
+#endif
+static CYTHON_INLINE unsigned PY_LONG_LONG __Pyx_PyInt_AsUnsignedLongLong(PyObject* x) {
+    const unsigned PY_LONG_LONG neg_one = (unsigned PY_LONG_LONG)-1, const_zero = 0;
+    const int is_unsigned = neg_one > const_zero;
+#if PY_MAJOR_VERSION < 3
+    if (likely(PyInt_Check(x))) {
+        long val = PyInt_AS_LONG(x);
+        if (is_unsigned && unlikely(val < 0)) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "can't convert negative value to unsigned PY_LONG_LONG");
+            return (unsigned PY_LONG_LONG)-1;
+        }
+        return (unsigned PY_LONG_LONG)val;
+    } else
+#endif
+    if (likely(PyLong_Check(x))) {
+        if (is_unsigned) {
+#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
+#if CYTHON_USE_PYLONG_INTERNALS
+            if (sizeof(digit) <= sizeof(unsigned PY_LONG_LONG)) {
+                switch (Py_SIZE(x)) {
+                    case  0: return 0;
+                    case  1: return (unsigned PY_LONG_LONG) ((PyLongObject*)x)->ob_digit[0];
+                }
+            }
+#endif
+#endif
+            if (unlikely(Py_SIZE(x) < 0)) {
                 PyErr_SetString(PyExc_OverflowError,
-                                "can't convert negative value to long");
-                return (long) -1;
+                                "can't convert negative value to unsigned PY_LONG_LONG");
+                return (unsigned PY_LONG_LONG)-1;
             }
-            return (long) val;
+            return (unsigned PY_LONG_LONG)PyLong_AsUnsignedLongLong(x);
+        } else {
+#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
+#if CYTHON_USE_PYLONG_INTERNALS
+            if (sizeof(digit) <= sizeof(unsigned PY_LONG_LONG)) {
+                switch (Py_SIZE(x)) {
+                    case  0: return 0;
+                    case  1: return +(unsigned PY_LONG_LONG) ((PyLongObject*)x)->ob_digit[0];
+                    case -1: return -(unsigned PY_LONG_LONG) ((PyLongObject*)x)->ob_digit[0];
+                }
+            }
+#endif
+#endif
+            return (unsigned PY_LONG_LONG)PyLong_AsLongLong(x);
         }
+    } else {
+        unsigned PY_LONG_LONG val;
+        PyObject *tmp = __Pyx_PyNumber_Int(x);
+        if (!tmp) return (unsigned PY_LONG_LONG)-1;
+        val = __Pyx_PyInt_AsUnsignedLongLong(tmp);
+        Py_DECREF(tmp);
+        return val;
+    }
+}
+
+#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
+#if CYTHON_USE_PYLONG_INTERNALS
+#include "longintrepr.h"
+#endif
+#endif
+static CYTHON_INLINE long __Pyx_PyInt_AsLong(PyObject* x) {
+    const long neg_one = (long)-1, const_zero = 0;
+    const int is_unsigned = neg_one > const_zero;
+#if PY_MAJOR_VERSION < 3
+    if (likely(PyInt_Check(x))) {
+        long val = PyInt_AS_LONG(x);
+        if (is_unsigned && unlikely(val < 0)) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "can't convert negative value to long");
+            return (long)-1;
+        }
+        return (long)val;
     } else
 #endif
     if (likely(PyLong_Check(x))) {
         if (is_unsigned) {
 #if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
- #if CYTHON_USE_PYLONG_INTERNALS
+#if CYTHON_USE_PYLONG_INTERNALS
             if (sizeof(digit) <= sizeof(long)) {
                 switch (Py_SIZE(x)) {
                     case  0: return 0;
                     case  1: return (long) ((PyLongObject*)x)->ob_digit[0];
                 }
             }
- #endif
+#endif
 #endif
             if (unlikely(Py_SIZE(x) < 0)) {
                 PyErr_SetString(PyExc_OverflowError,
                                 "can't convert negative value to long");
-                return (long) -1;
-            }
-            if (sizeof(long) <= sizeof(unsigned long)) {
-                __PYX_VERIFY_RETURN_INT(long, unsigned long, PyLong_AsUnsignedLong)
-            } else if (sizeof(long) <= sizeof(unsigned long long)) {
-                __PYX_VERIFY_RETURN_INT(long, unsigned long long, PyLong_AsUnsignedLongLong)
+                return (long)-1;
             }
+            return (long)PyLong_AsUnsignedLong(x);
         } else {
 #if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
- #if CYTHON_USE_PYLONG_INTERNALS
+#if CYTHON_USE_PYLONG_INTERNALS
             if (sizeof(digit) <= sizeof(long)) {
                 switch (Py_SIZE(x)) {
                     case  0: return 0;
@@ -30470,51 +29634,222 @@ static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) {
                     case -1: return -(long) ((PyLongObject*)x)->ob_digit[0];
                 }
             }
- #endif
 #endif
-            if (sizeof(long) <= sizeof(long)) {
-                __PYX_VERIFY_RETURN_INT(long, long, PyLong_AsLong)
-            } else if (sizeof(long) <= sizeof(long long)) {
-                __PYX_VERIFY_RETURN_INT(long, long long, PyLong_AsLongLong)
+#endif
+            return (long)PyLong_AsLong(x);
+        }
+    } else {
+        long val;
+        PyObject *tmp = __Pyx_PyNumber_Int(x);
+        if (!tmp) return (long)-1;
+        val = __Pyx_PyInt_AsLong(tmp);
+        Py_DECREF(tmp);
+        return val;
+    }
+}
+
+#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
+#if CYTHON_USE_PYLONG_INTERNALS
+#include "longintrepr.h"
+#endif
+#endif
+static CYTHON_INLINE PY_LONG_LONG __Pyx_PyInt_AsLongLong(PyObject* x) {
+    const PY_LONG_LONG neg_one = (PY_LONG_LONG)-1, const_zero = 0;
+    const int is_unsigned = neg_one > const_zero;
+#if PY_MAJOR_VERSION < 3
+    if (likely(PyInt_Check(x))) {
+        long val = PyInt_AS_LONG(x);
+        if (is_unsigned && unlikely(val < 0)) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "can't convert negative value to PY_LONG_LONG");
+            return (PY_LONG_LONG)-1;
+        }
+        return (PY_LONG_LONG)val;
+    } else
+#endif
+    if (likely(PyLong_Check(x))) {
+        if (is_unsigned) {
+#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
+#if CYTHON_USE_PYLONG_INTERNALS
+            if (sizeof(digit) <= sizeof(PY_LONG_LONG)) {
+                switch (Py_SIZE(x)) {
+                    case  0: return 0;
+                    case  1: return (PY_LONG_LONG) ((PyLongObject*)x)->ob_digit[0];
+                }
+            }
+#endif
+#endif
+            if (unlikely(Py_SIZE(x) < 0)) {
+                PyErr_SetString(PyExc_OverflowError,
+                                "can't convert negative value to PY_LONG_LONG");
+                return (PY_LONG_LONG)-1;
             }
+            return (PY_LONG_LONG)PyLong_AsUnsignedLongLong(x);
+        } else {
+#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
+#if CYTHON_USE_PYLONG_INTERNALS
+            if (sizeof(digit) <= sizeof(PY_LONG_LONG)) {
+                switch (Py_SIZE(x)) {
+                    case  0: return 0;
+                    case  1: return +(PY_LONG_LONG) ((PyLongObject*)x)->ob_digit[0];
+                    case -1: return -(PY_LONG_LONG) ((PyLongObject*)x)->ob_digit[0];
+                }
+            }
+#endif
+#endif
+            return (PY_LONG_LONG)PyLong_AsLongLong(x);
         }
-        {
-#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
-            PyErr_SetString(PyExc_RuntimeError,
-                            "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
-#else
-            long val;
-            PyObject *v = __Pyx_PyNumber_Int(x);
- #if PY_MAJOR_VERSION < 3
-            if (likely(v) && !PyLong_Check(v)) {
-                PyObject *tmp = v;
-                v = PyNumber_Long(tmp);
-                Py_DECREF(tmp);
+    } else {
+        PY_LONG_LONG val;
+        PyObject *tmp = __Pyx_PyNumber_Int(x);
+        if (!tmp) return (PY_LONG_LONG)-1;
+        val = __Pyx_PyInt_AsLongLong(tmp);
+        Py_DECREF(tmp);
+        return val;
+    }
+}
+
+#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
+#if CYTHON_USE_PYLONG_INTERNALS
+#include "longintrepr.h"
+#endif
+#endif
+static CYTHON_INLINE signed long __Pyx_PyInt_AsSignedLong(PyObject* x) {
+    const signed long neg_one = (signed long)-1, const_zero = 0;
+    const int is_unsigned = neg_one > const_zero;
+#if PY_MAJOR_VERSION < 3
+    if (likely(PyInt_Check(x))) {
+        long val = PyInt_AS_LONG(x);
+        if (is_unsigned && unlikely(val < 0)) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "can't convert negative value to signed long");
+            return (signed long)-1;
+        }
+        return (signed long)val;
+    } else
+#endif
+    if (likely(PyLong_Check(x))) {
+        if (is_unsigned) {
+#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
+#if CYTHON_USE_PYLONG_INTERNALS
+            if (sizeof(digit) <= sizeof(signed long)) {
+                switch (Py_SIZE(x)) {
+                    case  0: return 0;
+                    case  1: return (signed long) ((PyLongObject*)x)->ob_digit[0];
+                }
             }
- #endif
-            if (likely(v)) {
-                int one = 1; int is_little = (int)*(unsigned char *)&one;
-                unsigned char *bytes = (unsigned char *)&val;
-                int ret = _PyLong_AsByteArray((PyLongObject *)v,
-                                              bytes, sizeof(val),
-                                              is_little, !is_unsigned);
-                Py_DECREF(v);
-                if (likely(!ret))
-                    return val;
+#endif
+#endif
+            if (unlikely(Py_SIZE(x) < 0)) {
+                PyErr_SetString(PyExc_OverflowError,
+                                "can't convert negative value to signed long");
+                return (signed long)-1;
+            }
+            return (signed long)PyLong_AsUnsignedLong(x);
+        } else {
+#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
+#if CYTHON_USE_PYLONG_INTERNALS
+            if (sizeof(digit) <= sizeof(signed long)) {
+                switch (Py_SIZE(x)) {
+                    case  0: return 0;
+                    case  1: return +(signed long) ((PyLongObject*)x)->ob_digit[0];
+                    case -1: return -(signed long) ((PyLongObject*)x)->ob_digit[0];
+                }
             }
 #endif
-            return (long) -1;
+#endif
+            return (signed long)PyLong_AsLong(x);
         }
     } else {
-        long val;
+        signed long val;
+        PyObject *tmp = __Pyx_PyNumber_Int(x);
+        if (!tmp) return (signed long)-1;
+        val = __Pyx_PyInt_AsSignedLong(tmp);
+        Py_DECREF(tmp);
+        return val;
+    }
+}
+
+#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
+#if CYTHON_USE_PYLONG_INTERNALS
+#include "longintrepr.h"
+#endif
+#endif
+static CYTHON_INLINE signed PY_LONG_LONG __Pyx_PyInt_AsSignedLongLong(PyObject* x) {
+    const signed PY_LONG_LONG neg_one = (signed PY_LONG_LONG)-1, const_zero = 0;
+    const int is_unsigned = neg_one > const_zero;
+#if PY_MAJOR_VERSION < 3
+    if (likely(PyInt_Check(x))) {
+        long val = PyInt_AS_LONG(x);
+        if (is_unsigned && unlikely(val < 0)) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "can't convert negative value to signed PY_LONG_LONG");
+            return (signed PY_LONG_LONG)-1;
+        }
+        return (signed PY_LONG_LONG)val;
+    } else
+#endif
+    if (likely(PyLong_Check(x))) {
+        if (is_unsigned) {
+#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
+#if CYTHON_USE_PYLONG_INTERNALS
+            if (sizeof(digit) <= sizeof(signed PY_LONG_LONG)) {
+                switch (Py_SIZE(x)) {
+                    case  0: return 0;
+                    case  1: return (signed PY_LONG_LONG) ((PyLongObject*)x)->ob_digit[0];
+                }
+            }
+#endif
+#endif
+            if (unlikely(Py_SIZE(x) < 0)) {
+                PyErr_SetString(PyExc_OverflowError,
+                                "can't convert negative value to signed PY_LONG_LONG");
+                return (signed PY_LONG_LONG)-1;
+            }
+            return (signed PY_LONG_LONG)PyLong_AsUnsignedLongLong(x);
+        } else {
+#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
+#if CYTHON_USE_PYLONG_INTERNALS
+            if (sizeof(digit) <= sizeof(signed PY_LONG_LONG)) {
+                switch (Py_SIZE(x)) {
+                    case  0: return 0;
+                    case  1: return +(signed PY_LONG_LONG) ((PyLongObject*)x)->ob_digit[0];
+                    case -1: return -(signed PY_LONG_LONG) ((PyLongObject*)x)->ob_digit[0];
+                }
+            }
+#endif
+#endif
+            return (signed PY_LONG_LONG)PyLong_AsLongLong(x);
+        }
+    } else {
+        signed PY_LONG_LONG val;
         PyObject *tmp = __Pyx_PyNumber_Int(x);
-        if (!tmp) return (long) -1;
-        val = __Pyx_PyInt_As_long(tmp);
+        if (!tmp) return (signed PY_LONG_LONG)-1;
+        val = __Pyx_PyInt_AsSignedLongLong(tmp);
         Py_DECREF(tmp);
         return val;
     }
 }
 
+static CYTHON_INLINE void __Pyx_ExceptionSwap(PyObject **type, PyObject **value, PyObject **tb) {
+    PyObject *tmp_type, *tmp_value, *tmp_tb;
+#if CYTHON_COMPILING_IN_CPYTHON
+    PyThreadState *tstate = PyThreadState_GET();
+    tmp_type = tstate->exc_type;
+    tmp_value = tstate->exc_value;
+    tmp_tb = tstate->exc_traceback;
+    tstate->exc_type = *type;
+    tstate->exc_value = *value;
+    tstate->exc_traceback = *tb;
+#else
+    PyErr_GetExcInfo(&tmp_type, &tmp_value, &tmp_tb);
+    PyErr_SetExcInfo(*type, *value, *tb);
+#endif
+    *type = tmp_type;
+    *value = tmp_value;
+    *tb = tmp_tb;
+}
+
 static PyObject *__Pyx_Generator_Next(PyObject *self);
 static PyObject *__Pyx_Generator_Send(PyObject *self, PyObject *value);
 static PyObject *__Pyx_Generator_Close(PyObject *self);
@@ -30564,7 +29899,7 @@ static int __Pyx_PyGen_FetchStopIterationValue(PyObject **pvalue) {
     Py_DECREF(ev);
 #else
     {
-        PyObject* args = PyObject_GetAttr(ev, __pyx_n_s_args);
+        PyObject* args = PyObject_GetAttr(ev, __pyx_n_s__args);
         Py_DECREF(ev);
         if (likely(args)) {
             value = PyObject_GetItem(args, 0);
@@ -30700,7 +30035,7 @@ static PyObject *__Pyx_Generator_Send(PyObject *self, PyObject *value) {
             if (value == Py_None)
                 ret = PyIter_Next(yf);
             else
-                ret = __Pyx_PyObject_CallMethod1(yf, __pyx_n_s_send, value);
+                ret = __Pyx_PyObject_CallMethod1(yf, __pyx_n_s__send, value);
         }
         gen->is_running = 0;
         if (likely(ret)) {
@@ -30720,7 +30055,7 @@ static int __Pyx_Generator_CloseIter(__pyx_GeneratorObject *gen, PyObject *yf) {
     } else {
         PyObject *meth;
         gen->is_running = 1;
-        meth = PyObject_GetAttr(yf, __pyx_n_s_close);
+        meth = PyObject_GetAttr(yf, __pyx_n_s__close);
         if (unlikely(!meth)) {
             if (!PyErr_ExceptionMatches(PyExc_AttributeError)) {
                 PyErr_WriteUnraisable(yf);
@@ -30805,7 +30140,7 @@ static PyObject *__Pyx_Generator_Throw(PyObject *self, PyObject *args) {
         if (__Pyx_Generator_CheckExact(yf)) {
             ret = __Pyx_Generator_Throw(yf, args);
         } else {
-            PyObject *meth = PyObject_GetAttr(yf, __pyx_n_s_throw);
+            PyObject *meth = PyObject_GetAttr(yf, __pyx_n_s__throw);
             if (unlikely(!meth)) {
                 Py_DECREF(yf);
                 if (!PyErr_ExceptionMatches(PyExc_AttributeError)) {
@@ -30856,17 +30191,13 @@ static void __Pyx_Generator_dealloc(PyObject *self) {
     PyObject_GC_UnTrack(gen);
     if (gen->gi_weakreflist != NULL)
         PyObject_ClearWeakRefs(self);
+    PyObject_GC_Track(self);
     if (gen->resume_label > 0) {
-        PyObject_GC_Track(self);
-#if PY_VERSION_HEX >= 0x030400a1
-        if (PyObject_CallFinalizerFromDealloc(self))
-#else
         Py_TYPE(gen)->tp_del(self);
         if (self->ob_refcnt > 0)
-#endif
             return;                     /* resurrected.  :( */
-        PyObject_GC_UnTrack(self);
     }
+    PyObject_GC_UnTrack(self);
     __Pyx_Generator_clear(self);
     PyObject_GC_Del(gen);
 }
@@ -30876,10 +30207,8 @@ static void __Pyx_Generator_del(PyObject *self) {
     __pyx_GeneratorObject *gen = (__pyx_GeneratorObject *) self;
     if (gen->resume_label <= 0)
         return ;
-#if PY_VERSION_HEX < 0x030400a1
     assert(self->ob_refcnt == 0);
     self->ob_refcnt = 1;
-#endif
     __Pyx_ErrFetch(&error_type, &error_value, &error_traceback);
     res = __Pyx_Generator_Close(self);
     if (res == NULL)
@@ -30887,7 +30216,6 @@ static void __Pyx_Generator_del(PyObject *self) {
     else
         Py_DECREF(res);
     __Pyx_ErrRestore(error_type, error_value, error_traceback);
-#if PY_VERSION_HEX < 0x030400a1
     /* Undo the temporary resurrection; can't use DECREF here, it would
      * cause a recursive call.
      */
@@ -30919,7 +30247,6 @@ static void __Pyx_Generator_del(PyObject *self) {
     --Py_TYPE(self)->tp_frees;
     --Py_TYPE(self)->tp_allocs;
 #endif
-#endif
 }
 static PyMemberDef __pyx_Generator_memberlist[] = {
     {(char *) "gi_running",
@@ -30963,7 +30290,7 @@ static PyTypeObject __pyx_GeneratorType_type = {
     0,                                  /*tp_getattro*/
     0,                                  /*tp_setattro*/
     0,                                  /*tp_as_buffer*/
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_HAVE_FINALIZE, /* tp_flags*/
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags*/
     0,                                  /*tp_doc*/
     (traverseproc) __Pyx_Generator_traverse,   /*tp_traverse*/
     0,                                  /*tp_clear*/
@@ -30989,17 +30316,10 @@ static PyTypeObject __pyx_GeneratorType_type = {
     0,                                  /*tp_cache*/
     0,                                  /*tp_subclasses*/
     0,                                  /*tp_weaklist*/
-#if PY_VERSION_HEX >= 0x030400a1
-    0,                                  /*tp_del*/
-#else
     __Pyx_Generator_del,                /*tp_del*/
-#endif
 #if PY_VERSION_HEX >= 0x02060000
     0,                                  /*tp_version_tag*/
 #endif
-#if PY_VERSION_HEX >= 0x030400a1
-    __Pyx_Generator_del,                /*tp_finalize*/
-#endif
 };
 static __pyx_GeneratorObject *__Pyx_Generator_New(__pyx_generator_body_t body,
                                                   PyObject *closure) {
@@ -31024,10 +30344,10 @@ static __pyx_GeneratorObject *__Pyx_Generator_New(__pyx_generator_body_t body,
 static int __pyx_Generator_init(void) {
     __pyx_GeneratorType_type.tp_getattro = PyObject_GenericGetAttr;
     __pyx_GeneratorType_type.tp_iter = PyObject_SelfIter;
-    __pyx_GeneratorType = __Pyx_FetchCommonType(&__pyx_GeneratorType_type);
-    if (__pyx_GeneratorType == NULL) {
+    if (PyType_Ready(&__pyx_GeneratorType_type)) {
         return -1;
     }
+    __pyx_GeneratorType = &__pyx_GeneratorType_type;
     return 0;
 }
 
@@ -31095,7 +30415,7 @@ static PyTypeObject *__Pyx_ImportType(const char *module_name, const char *class
         goto bad;
     if (!PyType_Check(result)) {
         PyErr_Format(PyExc_TypeError,
-            "%.200s.%.200s is not a type object",
+            "%s.%s is not a type object",
             module_name, class_name);
         goto bad;
     }
@@ -31123,7 +30443,7 @@ static PyTypeObject *__Pyx_ImportType(const char *module_name, const char *class
     }
     else if ((size_t)basicsize != size) {
         PyErr_Format(PyExc_ValueError,
-            "%.200s.%.200s has the wrong size, try recompiling",
+            "%s.%s has the wrong size, try recompiling",
             module_name, class_name);
         goto bad;
     }
@@ -31150,14 +30470,14 @@ static int __Pyx_ImportFunction(PyObject *module, const char *funcname, void (**
     cobj = PyDict_GetItemString(d, funcname);
     if (!cobj) {
         PyErr_Format(PyExc_ImportError,
-            "%.200s does not export expected C function %.200s",
+            "%s does not export expected C function %s",
                 PyModule_GetName(module), funcname);
         goto bad;
     }
 #if PY_VERSION_HEX >= 0x02070000 && !(PY_MAJOR_VERSION==3 && PY_MINOR_VERSION==0)
     if (!PyCapsule_IsValid(cobj, sig)) {
         PyErr_Format(PyExc_TypeError,
-            "C function %.200s.%.200s has wrong signature (expected %.500s, got %.500s)",
+            "C function %s.%s has wrong signature (expected %s, got %s)",
              PyModule_GetName(module), funcname, sig, PyCapsule_GetName(cobj));
         goto bad;
     }
@@ -31171,7 +30491,7 @@ static int __Pyx_ImportFunction(PyObject *module, const char *funcname, void (**
     while (*s1 != '\0' && *s1 == *s2) { s1++; s2++; }
     if (*s1 != *s2) {
         PyErr_Format(PyExc_TypeError,
-            "C function %.200s.%.200s has wrong signature (expected %.500s, got %.500s)",
+            "C function %s.%s has wrong signature (expected %s, got %s)",
              PyModule_GetName(module), funcname, sig, desc);
         goto bad;
     }
@@ -31429,18 +30749,10 @@ static CYTHON_INLINE char* __Pyx_PyObject_AsStringAndSize(PyObject* o, Py_ssize_
 #endif /* PY_VERSION_HEX < 0x03030000 */
     } else
 #endif /* __PYX_DEFAULT_STRING_ENCODING_IS_ASCII  || __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT */
-#if !CYTHON_COMPILING_IN_PYPY
-#if PY_VERSION_HEX >= 0x02060000
-    if (PyByteArray_Check(o)) {
-        *length = PyByteArray_GET_SIZE(o);
-        return PyByteArray_AS_STRING(o);
-    } else
-#endif
-#endif
     {
         char* result;
         int r = PyBytes_AsStringAndSize(o, &result, length);
-        if (unlikely(r < 0)) {
+        if (r < 0) {
             return NULL;
         } else {
             return result;
@@ -31485,7 +30797,7 @@ static CYTHON_INLINE PyObject* __Pyx_PyNumber_Int(PyObject* x) {
     if (!PyLong_Check(res)) {
 #endif
       PyErr_Format(PyExc_TypeError,
-                   "__%.4s__ returned non-%.4s (type %.200s)",
+                   "__%s__ returned non-%s (type %.200s)",
                    name, name, Py_TYPE(res)->tp_name);
       Py_DECREF(res);
       return NULL;
@@ -31497,35 +30809,9 @@ static CYTHON_INLINE PyObject* __Pyx_PyNumber_Int(PyObject* x) {
   }
   return res;
 }
-#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
- #if CYTHON_USE_PYLONG_INTERNALS
-  #include "longintrepr.h"
- #endif
-#endif
 static CYTHON_INLINE Py_ssize_t __Pyx_PyIndex_AsSsize_t(PyObject* b) {
   Py_ssize_t ival;
-  PyObject *x;
-#if PY_MAJOR_VERSION < 3
-  if (likely(PyInt_CheckExact(b)))
-      return PyInt_AS_LONG(b);
-#endif
-  if (likely(PyLong_CheckExact(b))) {
-    #if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
-     #if CYTHON_USE_PYLONG_INTERNALS
-       switch (Py_SIZE(b)) {
-       case -1: return -(sdigit)((PyLongObject*)b)->ob_digit[0];
-       case  0: return 0;
-       case  1: return ((PyLongObject*)b)->ob_digit[0];
-       }
-     #endif
-    #endif
-  #if PY_VERSION_HEX < 0x02060000
-    return PyInt_AsSsize_t(b);
-  #else
-    return PyLong_AsSsize_t(b);
-  #endif
-  }
-  x = PyNumber_Index(b);
+  PyObject* x = PyNumber_Index(b);
   if (!x) return -1;
   ival = PyInt_AsSsize_t(x);
   Py_DECREF(x);
@@ -31544,6 +30830,16 @@ static CYTHON_INLINE PyObject * __Pyx_PyInt_FromSize_t(size_t ival) {
    return PyInt_FromSize_t(ival);
 #endif
 }
+static CYTHON_INLINE size_t __Pyx_PyInt_AsSize_t(PyObject* x) {
+   unsigned PY_LONG_LONG val = __Pyx_PyInt_AsUnsignedLongLong(x);
+   if (unlikely(val != (unsigned PY_LONG_LONG)(size_t)val)) {
+       if ((val != (unsigned PY_LONG_LONG)-1) || !PyErr_Occurred())
+           PyErr_SetString(PyExc_OverflowError,
+                           "value too large to convert to size_t");
+       return (size_t)-1;
+   }
+   return (size_t)val;
+}
 
 
 #endif /* Py_PYTHON_H */
diff --git a/python/cdec/hypergraph.pxi b/python/cdec/hypergraph.pxi
index 91cc8eec..1e0a1903 100644
--- a/python/cdec/hypergraph.pxi
+++ b/python/cdec/hypergraph.pxi
@@ -48,8 +48,8 @@ cdef class Hypergraph:
 
     def kbest(self, size):
         """hg.kbest(size) -> List of k-best hypotheses in the hypergraph."""
-        cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal]* derivations = new kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal](self.hg[0], size)
-        cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal].Derivation* derivation
+        cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal, kbest.NoFilter[vector[int]]]* derivations = new kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal, kbest.NoFilter[vector[int]]](self.hg[0], size)
+        cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal, kbest.NoFilter[vector[int]]].Derivation* derivation
         cdef unsigned k
         try:
             for k in range(size):
@@ -60,11 +60,11 @@ cdef class Hypergraph:
             del derivations
 
     def kbest_trees(self, size):
-        """hg.kbest_trees(size) -> List of k-best trees in the hypergraph."""
-        cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal]* f_derivations = new kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal](self.hg[0], size)
-        cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal].Derivation* f_derivation
-        cdef kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal]* e_derivations = new kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal](self.hg[0], size)
-        cdef kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal].Derivation* e_derivation
+        """hg.kbest_trees(size) -> List of k-best trees in the hypergrapt.NoFilter."""
+        cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.NoFilter[vector[int]]]* f_derivations = new kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.NoFilter[vector[int]]](self.hg[0], size)
+        cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.NoFilter[vector[int]]].Derivation* f_derivation
+        cdef kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal, kbest.NoFilter[vector[int]]]* e_derivations = new kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal, kbest.NoFilter[vector[int]]](self.hg[0], size)
+        cdef kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal, kbest.NoFilter[vector[int]]].Derivation* e_derivation
         cdef unsigned k
         try:
             for k in range(size):
@@ -80,8 +80,56 @@ cdef class Hypergraph:
 
     def kbest_features(self, size):
         """hg.kbest_trees(size) -> List of k-best feature vectors in the hypergraph."""
-        cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal]* derivations = new kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal](self.hg[0], size)
-        cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal].Derivation* derivation
+        cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal, kbest.NoFilter[FastSparseVector[double]]]* derivations = new kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal, kbest.NoFilter[FastSparseVector[double]]](self.hg[0], size)
+        cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal, kbest.NoFilter[FastSparseVector[double]]].Derivation* derivation
+        cdef SparseVector fmap
+        cdef unsigned k
+        try:
+            for k in range(size):
+                derivation = derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)
+                if not derivation: break
+                fmap = SparseVector.__new__(SparseVector)
+                fmap.vector = new FastSparseVector[weight_t](derivation._yield)
+                yield fmap
+        finally:
+            del derivations
+
+    def unique_kbest(self, size):
+        """hg.kbest(size) -> List of unique k-best hypotheses in the hypergraph."""
+        cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal, kbest.FilterUnique]* derivations = new kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal, kbest.FilterUnique](self.hg[0], size)
+        cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal, kbest.FilterUnique].Derivation* derivation
+        cdef unsigned k
+        try:
+            for k in range(size):
+                derivation = derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)
+                if not derivation: break
+                yield unicode(GetString(derivation._yield).c_str(), 'utf8')
+        finally:
+            del derivations
+
+    def unique_kbest_trees(self, size):
+        """hg.kbest_trees(size) -> List of unique k-best trees in the hypergraph."""
+        cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.FilterUnique]* f_derivations = new kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.FilterUnique](self.hg[0], size)
+        cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal, kbest.FilterUnique].Derivation* f_derivation
+        cdef kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal, kbest.FilterUnique]* e_derivations = new kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal, kbest.FilterUnique](self.hg[0], size)
+        cdef kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal, kbest.FilterUnique].Derivation* e_derivation
+        cdef unsigned k
+        try:
+            for k in range(size):
+                f_derivation = f_derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)
+                e_derivation = e_derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)
+                if not f_derivation or not e_derivation: break
+                f_tree = unicode(GetString(f_derivation._yield).c_str(), 'utf8')
+                e_tree = unicode(GetString(e_derivation._yield).c_str(), 'utf8')
+                yield (f_tree, e_tree)
+        finally:
+            del f_derivations
+            del e_derivations
+
+    def unique_kbest_features(self, size):
+        """hg.kbest_trees(size) -> List of unique k-best feature vectors in the hypergraph."""
+        cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal, kbest.NoFilter[FastSparseVector[double]]]* derivations = new kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal, kbest.NoFilter[FastSparseVector[double]]](self.hg[0], size)
+        cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal, kbest.NoFilter[FastSparseVector[double]]].Derivation* derivation
         cdef SparseVector fmap
         cdef unsigned k
         try:
diff --git a/python/cdec/kbest.pxd b/python/cdec/kbest.pxd
index 44ecfbab..ecf1fc00 100644
--- a/python/cdec/kbest.pxd
+++ b/python/cdec/kbest.pxd
@@ -13,7 +13,13 @@ cdef extern from "decoder/viterbi.h":
         pass
 
 cdef extern from "decoder/kbest.h" namespace "KBest":
-    cdef cppclass KBestDerivations[T, Traversal]:
+    cdef cppclass NoFilter[Dummy]:
+        pass
+
+    cdef cppclass FilterUnique:
+        pass
+
+    cdef cppclass KBestDerivations[T, Traversal, Filter]:
         cppclass Derivation:
             T _yield "yield"
         KBestDerivations(Hypergraph& hg, unsigned k) nogil