[python] Get rid of the GIL

author: Victor Chahuneau <vchahune@cs.cmu.edu> 2012-08-08 18:56:02 -0400
committer: Victor Chahuneau <vchahune@cs.cmu.edu> 2012-08-08 18:56:02 -0400
commit: e0eabf1e59cbfa85b00efcff699cdcd6a524e9c5 (patch)
tree: e6d013ebdb0eafc8e1e380e84549460847d685ac
parent: cc5584e9b066e6d1177495f7028ff49ab057ed52 (diff)
10 files changed, 2418 insertions, 1627 deletions
diff --git a/.gitignore b/.gitignore
index 571360ed..9c60cfcc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,6 +32,7 @@ rampion/rampion_cccp
 rst_parser/mst_train
 rst_parser/rst_parse
 rst_parser/rst_train
+rst_parser/random_tree
 training/liblbfgs/bin/
 training/liblbfgs/ll_test
 utils/atools
diff --git a/python/pkg/cdec/__init__.py b/python/pkg/cdec/__init__.py
index 531fea49..8e10f340 100644
--- a/python/pkg/cdec/__init__.py
+++ b/python/pkg/cdec/__init__.py
@@ -1 +1,2 @@
-from cdec._cdec import Decoder, Lattice, TRule, MRule, NT, NTRef, ParseFailed, InvalidConfig
+from cdec._cdec import Decoder, Lattice, TRule, MRule, NT, NTRef,\
+        ParseFailed, InvalidConfig, set_silent
diff --git a/python/setup.py b/python/setup.py
index 7be976e8..54510024 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -1,45 +1,41 @@
 from distutils.core import setup
 from distutils.extension import Extension
 import sys
-import os
-import glob
+import re
+
+def fail(msg):
+    sys.stderr.write(msg)
+    sys.exit(1)
 
 INC = ['..', 'src/', '../decoder', '../utils', '../mteval']
 LIB = ['../decoder', '../utils', '../mteval', '../training', '../klm/lm', '../klm/util']
-LINK_ARGS = []
-
-# Detect Boost
-BOOST_ROOT = os.getenv('BOOST_ROOT')
-if BOOST_ROOT:
-    BOOST_INC = os.path.join(BOOST_ROOT, 'include')
-    BOOST_LIB = os.path.join(BOOST_ROOT, 'lib')
-    if not os.path.exists(BOOST_INC):
-        sys.stderr.write('Error: could not find Boost headers in <%s>\n' % BOOST_INC)
-        sys.exit(1)
-    if not os.path.exists(BOOST_LIB):
-        sys.stderr.write('Error: could not find Boost libraries in <%s>\n' % BOOST_LIB)
-        sys.exit(1)
-    INC.append(BOOST_INC)
-    LIB.append(BOOST_LIB)
-    LINK_ARGS += ['-Wl,-rpath', '-Wl,'+BOOST_LIB]
-else:
-    BOOST_LIB = '/usr/local/lib'
 
-# Detect -mt
-if glob.glob(os.path.join(BOOST_LIB, 'libboost_program_options-mt.*')):
-    BOOST_PROGRAM_OPTIONS = 'boost_program_options-mt'
-else:
-    BOOST_PROGRAM_OPTIONS = 'boost_program_options'
+try:
+    with open('../config.status') as config:
+        config = config.read()
+    subs = dict(re.findall('s,@(\w+)@,\|#_!!_#\|(.*),g', config)) # sed
+    if not subs:
+        subs = dict(re.findall('S\["(\w+)"\]="(.*)"', config)) # awk
+    if not subs:
+        fail('Cannot parse config.status\n'
+             'Please report this bug to the developers')
+    LIBS = re.findall('-l([^\s]+)', subs['LIBS'])
+    CPPFLAGS = re.findall('-[^R][^\s]+', subs['CPPFLAGS'])
+    LDFLAGS = re.findall('-[^\s]+', subs['LDFLAGS'])
+    LDFLAGS = [opt.replace('-R', '-Wl,-rpath,') for opt in LDFLAGS]
+except IOError:
+    fail('Did you run ./configure? Cannot find config.status')
+except KeyError as e:
+    fail('Cannot find option {0} in config.status'.format(e))
 
 ext_modules = [
     Extension(name='cdec._cdec',
         sources=['src/_cdec.cpp'],
         include_dirs=INC,
         library_dirs=LIB,
-        libraries=[BOOST_PROGRAM_OPTIONS, 'z',
-                   'cdec', 'utils', 'mteval', 'training', 'klm', 'klm_util'],
-        extra_compile_args=['-DHAVE_CONFIG_H'],
-        extra_link_args=LINK_ARGS),
+        libraries=LIBS + ['z', 'cdec', 'utils', 'mteval', 'training', 'klm', 'klm_util'],
+        extra_compile_args=CPPFLAGS,
+        extra_link_args=LDFLAGS),
     Extension(name='cdec.sa._sa',
         sources=['src/sa/_sa.c', 'src/sa/strmap.cc'])
 ]
diff --git a/python/src/_cdec.cpp b/python/src/_cdec.cpp
index 4b02edd5..87b836f1 100644
--- a/python/src/_cdec.cpp
+++ b/python/src/_cdec.cpp
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.16 on Tue Aug  7 23:28:20 2012 */
+/* Generated by Cython 0.17.beta1 on Wed Aug  8 18:52:57 2012 */
 
 #define PY_SSIZE_T_CLEAN
 #include "Python.h"
@@ -47,12 +47,6 @@
 #define CYTHON_COMPILING_IN_CPYTHON 1
 #endif
 
-#if CYTHON_COMPILING_IN_PYPY
-  #define __Pyx_PyCFunction_Call PyObject_Call
-#else
-  #define __Pyx_PyCFunction_Call PyCFunction_Call
-#endif
-
 #if PY_VERSION_HEX < 0x02050000
   typedef int Py_ssize_t;
   #define PY_SSIZE_T_MAX INT_MAX
@@ -60,8 +54,11 @@
   #define PY_FORMAT_SIZE_T ""
   #define PyInt_FromSsize_t(z) PyInt_FromLong(z)
   #define PyInt_AsSsize_t(o)   __Pyx_PyInt_AsInt(o)
-  #define PyNumber_Index(o)    PyNumber_Int(o)
-  #define PyIndex_Check(o)     PyNumber_Check(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), \
+                                 (PyObject*)0))
+  #define PyIndex_Check(o)     (PyNumber_Check(o) && !PyFloat_Check(o) && !PyComplex_Check(o))
   #define PyErr_WarnEx(category, message, stacklevel) PyErr_Warn(category, message)
   #define __PYX_BUILD_PY_SSIZE_T "i"
 #else
@@ -130,14 +127,20 @@
 #endif
 
 
-#if PY_VERSION_HEX > 0x03030000 && defined(PyUnicode_GET_LENGTH)
+#if PY_VERSION_HEX > 0x03030000 && defined(PyUnicode_KIND)
   #define CYTHON_PEP393_ENABLED 1
-  #define __Pyx_PyUnicode_GET_LENGTH(u) PyUnicode_GET_LENGTH(u)
+  #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_READ(k, d, i)   PyUnicode_READ(k, d, i)
 #else
   #define CYTHON_PEP393_ENABLED 0
-  #define __Pyx_PyUnicode_GET_LENGTH(u) PyUnicode_GET_SIZE(u)
+  #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_READ(k, d, i)   ((k=k), (Py_UCS4)(((Py_UNICODE*)d)[i]))
 #endif
 
 #if PY_MAJOR_VERSION >= 3
@@ -270,6 +273,7 @@
 #include <math.h>
 #define __PYX_HAVE___cdec
 #define __PYX_HAVE_API___cdec
+#include "string.h"
 #include <string>
 #include <vector>
 #include <utility>
@@ -357,7 +361,11 @@ 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
+#define __pyx_PyFloat_AsDouble(x) PyFloat_AsDouble(x)
+#endif
 #define __pyx_PyFloat_AsFloat(x) ((float) __pyx_PyFloat_AsDouble(x))
 
 #ifdef __GNUC__
@@ -456,7 +464,7 @@ struct __pyx_opt_args_5_cdec_as_str {
   char *error_msg;
 };
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":117
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":117
  *         return CandidateSet(self)
  * 
  * cdef class Scorer:             # <<<<<<<<<<<<<<
@@ -470,7 +478,7 @@ struct __pyx_obj_5_cdec_Scorer {
 };
 
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":20
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":20
  *         return '[%s]' % self.cat
  * 
  * cdef class NTRef:             # <<<<<<<<<<<<<<
@@ -483,7 +491,7 @@ struct __pyx_obj_5_cdec_NTRef {
 };
 
 
-/* "/home/cdyer/cdec/python/src/cdec.sa._sa.pxd":1
+/* "/Users/vchahun/Sandbox/cdec/python/src/cdec.sa._sa.pxd":1
  * cdef class Phrase:             # <<<<<<<<<<<<<<
  *     cdef int *syms
  *     cdef int n, *varpos, n_vars
@@ -498,7 +506,7 @@ struct __pyx_obj_4cdec_2sa_3_sa_Phrase {
 };
 
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":90
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":90
  *         return candidate
  * 
  *     def __iter__(self):             # <<<<<<<<<<<<<<
@@ -514,7 +522,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_22___iter__ {
 };
 
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":181
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":181
  *         super(MRule, self).__init__(lhs, rhs, e, scores, a)
  * 
  * cdef class Grammar:             # <<<<<<<<<<<<<<
@@ -527,7 +535,7 @@ struct __pyx_obj_5_cdec_Grammar {
 };
 
 
-/* "/home/cdyer/cdec/python/src/lattice.pxi":58
+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":58
  * 
  *     def todot(self):
  *         def lines():             # <<<<<<<<<<<<<<
@@ -550,12 +558,12 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_20_lines {
 };
 
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":88
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":91
  *             del hypos
  * 
  *     def sample_trees(self, unsigned n):             # <<<<<<<<<<<<<<
  *        cdef vector[string]* trees = new vector[string]()
- *        if self.rng == NULL:
+ *        hypergraph.sample_trees(self.hg[0], n, self._rng(), trees)
  */
 struct __pyx_obj_5_cdec___pyx_scope_struct_12_sample_trees {
   PyObject_HEAD
@@ -568,7 +576,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_12_sample_trees {
 };
 
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":125
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":126
  * 
  *     property edges:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -584,7 +592,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_13___get__ {
 };
 
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":5
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":5
  * import cdec.sa._sa as _sa
  * 
  * def _phrase(phrase):             # <<<<<<<<<<<<<<
@@ -597,7 +605,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_2__phrase {
 };
 
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":65
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":65
  *         return result
  * 
  * cdef class CandidateSet:             # <<<<<<<<<<<<<<
@@ -612,7 +620,7 @@ struct __pyx_obj_5_cdec_CandidateSet {
 };
 
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":131
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":132
  * 
  *     property nodes:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -628,7 +636,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_14___get__ {
 };
 
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":50
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":50
  *     return TRule(lhs, f, e, scores, a)
  * 
  * cdef class TRule:             # <<<<<<<<<<<<<<
@@ -641,7 +649,7 @@ struct __pyx_obj_5_cdec_TRule {
 };
 
 
-/* "/home/cdyer/cdec/python/src/cdec.sa._sa.pxd":7
+/* "/Users/vchahun/Sandbox/cdec/python/src/cdec.sa._sa.pxd":7
  *     cdef public int chunklen(self, int k)
  * 
  * cdef class Rule:             # <<<<<<<<<<<<<<
@@ -659,7 +667,7 @@ struct __pyx_obj_4cdec_2sa_3_sa_Rule {
 };
 
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":169
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":169
  *                 _phrase(self.f), _phrase(self.e), scores)
  * 
  * cdef class MRule(TRule):             # <<<<<<<<<<<<<<
@@ -671,7 +679,7 @@ struct __pyx_obj_5_cdec_MRule {
 };
 
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":98
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":98
  *         self.cs.AddKBestCandidates(hypergraph.hg[0], k, self.scorer.get())
  * 
  * cdef class SegmentEvaluator:             # <<<<<<<<<<<<<<
@@ -685,7 +693,7 @@ struct __pyx_obj_5_cdec_SegmentEvaluator {
 };
 
 
-/* "_cdec.pyx":54
+/* "_cdec.pyx":57
  *                     'csplit', 'tagger', 'lexalign'):
  *                 raise InvalidConfig('formalism "%s" unknown' % formalism)
  *             config_str = '\n'.join('%s = %s' % kv for kv in _make_config(config))             # <<<<<<<<<<<<<<
@@ -701,21 +709,13 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_25_genexpr {
   PyObject *(*__pyx_t_2)(PyObject *);
 };
 
-
-/* "/home/cdyer/cdec/python/src/lattice.pxi":57
- *             yield self[i]
- * 
- *     def todot(self):             # <<<<<<<<<<<<<<
- *         def lines():
- *             yield 'digraph lattice {'
- */
 struct __pyx_obj_5_cdec___pyx_scope_struct_19_todot {
   PyObject_HEAD
   struct __pyx_obj_5_cdec_Lattice *__pyx_v_self;
 };
 
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":12
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":12
  *         return stats
  * 
  * cdef class Candidate:             # <<<<<<<<<<<<<<
@@ -729,7 +729,7 @@ struct __pyx_obj_5_cdec_Candidate {
 };
 
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":165
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":165
  * 
  *     def __str__(self):
  *         scores = ' '.join('%s=%s' % feat for feat in self.scores)             # <<<<<<<<<<<<<<
@@ -746,7 +746,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_6_genexpr {
 };
 
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":8
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":8
  *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)
  * 
  * cdef class NT:             # <<<<<<<<<<<<<<
@@ -760,7 +760,7 @@ struct __pyx_obj_5_cdec_NT {
 };
 
 
-/* "_cdec.pyx":43
+/* "_cdec.pyx":46
  *     cdef DenseVector weights
  * 
  *     def __cinit__(self, config_str=None, **config):             # <<<<<<<<<<<<<<
@@ -773,7 +773,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_24___cinit__ {
 };
 
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":159
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":160
  *         return vector
  * 
  * cdef class HypergraphEdge:             # <<<<<<<<<<<<<<
@@ -789,7 +789,7 @@ struct __pyx_obj_5_cdec_HypergraphEdge {
 };
 
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":67
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":67
  *         self.vector.set_value(fid, value)
  * 
  *     def __iter__(self):             # <<<<<<<<<<<<<<
@@ -806,7 +806,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_1___iter__ {
 };
 
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":215
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":216
  * 
  *     property in_edges:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -822,7 +822,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_16___get__ {
 };
 
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":124
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":124
  * 
  *     property a:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -839,7 +839,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_4___get__ {
 };
 
 
-/* "/home/cdyer/cdec/python/src/lattice.pxi":52
+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":52
  *         return hypergraph.AsPLF(self.lattice[0], True).c_str()
  * 
  *     def __iter__(self):             # <<<<<<<<<<<<<<
@@ -855,7 +855,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_18___iter__ {
 };
 
 
-/* "_cdec.pyx":39
+/* "_cdec.pyx":42
  *             yield key, bytes(value)
  * 
  * cdef class Decoder:             # <<<<<<<<<<<<<<
@@ -869,7 +869,7 @@ struct __pyx_obj_5_cdec_Decoder {
 };
 
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":205
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":206
  *         raise NotImplemented('comparison not implemented for HypergraphEdge')
  * 
  * cdef class HypergraphNode:             # <<<<<<<<<<<<<<
@@ -884,7 +884,7 @@ struct __pyx_obj_5_cdec_HypergraphNode {
 };
 
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":45
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":45
  *         return sparse
  * 
  * cdef class SparseVector:             # <<<<<<<<<<<<<<
@@ -897,7 +897,7 @@ struct __pyx_obj_5_cdec_SparseVector {
 };
 
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":221
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":222
  * 
  *     property out_edges:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -913,7 +913,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_17___get__ {
 };
 
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":31
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":31
  *         self.vector[0][fid] = value
  * 
  *     def __iter__(self):             # <<<<<<<<<<<<<<
@@ -929,7 +929,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct____iter__ {
 };
 
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":44
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":44
  *         return self.stats.size()
  * 
  *     def __iter__(self):             # <<<<<<<<<<<<<<
@@ -946,7 +946,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_21___iter__ {
 };
 
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":3
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":3
  * from cython.operator cimport preincrement as pinc
  * 
  * cdef class DenseVector:             # <<<<<<<<<<<<<<
@@ -960,7 +960,7 @@ struct __pyx_obj_5_cdec_DenseVector {
 };
 
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":187
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":187
  *         del self.grammar
  * 
  *     def __iter__(self):             # <<<<<<<<<<<<<<
@@ -979,7 +979,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_7___iter__ {
 };
 
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":173
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":173
  *         out.fields[i] = ss[i]
  * 
  * cdef class Metric:             # <<<<<<<<<<<<<<
@@ -992,7 +992,7 @@ struct __pyx_obj_5_cdec_Metric {
 };
 
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":26
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":26
  *             return fmap
  * 
  * cdef class SufficientStats:             # <<<<<<<<<<<<<<
@@ -1006,7 +1006,7 @@ struct __pyx_obj_5_cdec_SufficientStats {
 };
 
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":31
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":36
  *         return unicode(hypergraph.JoshuaVisualizationString(self.hg[0]).c_str(), 'utf8')
  * 
  *     def kbest(self, size):             # <<<<<<<<<<<<<<
@@ -1025,7 +1025,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_8_kbest {
 };
 
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":61
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":66
  *             del e_derivations
  * 
  *     def kbest_features(self, size):             # <<<<<<<<<<<<<<
@@ -1045,7 +1045,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features {
 };
 
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":179
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":180
  * 
  *     property tail_nodes:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -1061,7 +1061,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_15___get__ {
 };
 
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":164
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":164
  *             self.rule.get().lhs_ = -TDConvert(<char *>lhs.cat)
  * 
  *     def __str__(self):             # <<<<<<<<<<<<<<
@@ -1074,7 +1074,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_5___str__ {
 };
 
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":6
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":6
  * 
  * def _phrase(phrase):
  *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)             # <<<<<<<<<<<<<<
@@ -1091,7 +1091,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_3_genexpr {
 };
 
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":43
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":48
  *             del derivations
  * 
  *     def kbest_trees(self, size):             # <<<<<<<<<<<<<<
@@ -1114,7 +1114,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_9_kbest_trees {
 };
 
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":4
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":4
  * cimport kbest
  * 
  * cdef class Hypergraph:             # <<<<<<<<<<<<<<
@@ -1123,12 +1123,13 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_9_kbest_trees {
  */
 struct __pyx_obj_5_cdec_Hypergraph {
   PyObject_HEAD
+  struct __pyx_vtabstruct_5_cdec_Hypergraph *__pyx_vtab;
   Hypergraph *hg;
   MT19937 *rng;
 };
 
 
-/* "/home/cdyer/cdec/python/src/lattice.pxi":3
+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":3
  * cimport lattice
  * 
  * cdef class Lattice:             # <<<<<<<<<<<<<<
@@ -1141,12 +1142,12 @@ struct __pyx_obj_5_cdec_Lattice {
 };
 
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":76
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":81
  *             del derivations
  * 
  *     def sample(self, unsigned n):             # <<<<<<<<<<<<<<
  *         cdef vector[hypergraph.Hypothesis]* hypos = new vector[hypergraph.Hypothesis]()
- *         if self.rng == NULL:
+ *         hypergraph.sample_hypotheses(self.hg[0], n, self._rng(), hypos)
  */
 struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample {
   PyObject_HEAD
@@ -1159,8 +1160,8 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample {
 };
 
 
-/* "_cdec.pyx":28
- * class ParseFailed(Exception): pass
+/* "_cdec.pyx":31
+ *     SetSilent(yn)
  * 
  * def _make_config(config):             # <<<<<<<<<<<<<<
  *     for key, value in config.items():
@@ -1182,7 +1183,7 @@ struct __pyx_obj_5_cdec___pyx_scope_struct_23__make_config {
 };
 
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":204
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":204
  *             self.grammar.get().SetGrammarName(string(<char *>name))
  * 
  * cdef class TextGrammar(Grammar):             # <<<<<<<<<<<<<<
@@ -1195,7 +1196,21 @@ struct __pyx_obj_5_cdec_TextGrammar {
 
 
 
-/* "/home/cdyer/cdec/python/src/cdec.sa._sa.pxd":1
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":4
+ * cimport kbest
+ * 
+ * cdef class Hypergraph:             # <<<<<<<<<<<<<<
+ *     cdef hypergraph.Hypergraph* hg
+ *     cdef MT19937* rng
+ */
+
+struct __pyx_vtabstruct_5_cdec_Hypergraph {
+  MT19937 *(*_rng)(struct __pyx_obj_5_cdec_Hypergraph *);
+};
+static struct __pyx_vtabstruct_5_cdec_Hypergraph *__pyx_vtabptr_5_cdec_Hypergraph;
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/cdec.sa._sa.pxd":1
  * cdef class Phrase:             # <<<<<<<<<<<<<<
  *     cdef int *syms
  *     cdef int n, *varpos, n_vars
@@ -1208,7 +1223,7 @@ struct __pyx_vtabstruct_4cdec_2sa_3_sa_Phrase {
 static struct __pyx_vtabstruct_4cdec_2sa_3_sa_Phrase *__pyx_vtabptr_4cdec_2sa_3_sa_Phrase;
 
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":205
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":206
  *         raise NotImplemented('comparison not implemented for HypergraphEdge')
  * 
  * cdef class HypergraphNode:             # <<<<<<<<<<<<<<
@@ -1222,7 +1237,7 @@ struct __pyx_vtabstruct_5_cdec_HypergraphNode {
 static struct __pyx_vtabstruct_5_cdec_HypergraphNode *__pyx_vtabptr_5_cdec_HypergraphNode;
 
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":159
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":160
  *         return vector
  * 
  * cdef class HypergraphEdge:             # <<<<<<<<<<<<<<
@@ -1318,13 +1333,28 @@ static int __Pyx_ParseOptionalKeywords(PyObject *kwds, PyObject **argnames[], \
     PyObject *kwds2, PyObject *values[], Py_ssize_t num_pos_args, \
     const char* function_name); /*proto*/
 
+#if CYTHON_COMPILING_IN_CPYTHON
+static CYTHON_INLINE int __Pyx_PyList_Append(PyObject* list, PyObject* x) {
+    PyListObject* L = (PyListObject*) list;
+    Py_ssize_t len = Py_SIZE(list);
+    if (likely(L->allocated > len)) {
+        Py_INCREF(x);
+        PyList_SET_ITEM(list, len, x);
+        Py_SIZE(list) = len+1;
+        return 0;
+    }
+    return PyList_Append(list, x);
+}
+#else
+#define __Pyx_PyList_Append(L,x) PyList_Append(L,x)
+#endif
+
 static CYTHON_INLINE PyObject* __Pyx_PyObject_Append(PyObject* L, PyObject* x) {
     if (likely(PyList_CheckExact(L))) {
-        if (PyList_Append(L, x) < 0) return NULL;
+        if (unlikely(PyList_Append(L, x) < 0)) return NULL;
         Py_INCREF(Py_None);
         return Py_None; /* this is just to have an accurate signature */
-    }
-    else {
+    } else {
         PyObject *r, *m;
         m = __Pyx_GetAttrString(L, "append");
         if (!m) return NULL;
@@ -1345,42 +1375,47 @@ static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Generic(PyObject *o, PyObject* j
                                                     __Pyx_GetItemInt_List_Fast(o, i) : \
                                                     __Pyx_GetItemInt_Generic(o, to_py_func(i)))
 static CYTHON_INLINE PyObject *__Pyx_GetItemInt_List_Fast(PyObject *o, Py_ssize_t i) {
-    if (likely(o != Py_None)) {
-        if (likely((0 <= i) & (i < PyList_GET_SIZE(o)))) {
-            PyObject *r = PyList_GET_ITEM(o, i);
-            Py_INCREF(r);
-            return r;
-        }
-        else if ((-PyList_GET_SIZE(o) <= i) & (i < 0)) {
-            PyObject *r = PyList_GET_ITEM(o, PyList_GET_SIZE(o) + i);
-            Py_INCREF(r);
-            return r;
-        }
+#if CYTHON_COMPILING_IN_CPYTHON
+    if (likely((0 <= i) & (i < PyList_GET_SIZE(o)))) {
+        PyObject *r = PyList_GET_ITEM(o, i);
+        Py_INCREF(r);
+        return r;
+    }
+    else if ((-PyList_GET_SIZE(o) <= i) & (i < 0)) {
+        PyObject *r = PyList_GET_ITEM(o, PyList_GET_SIZE(o) + i);
+        Py_INCREF(r);
+        return r;
     }
     return __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
+#else
+    return PySequence_GetItem(o, i);
+#endif
 }
 #define __Pyx_GetItemInt_Tuple(o, i, size, to_py_func) (((size) <= sizeof(Py_ssize_t)) ? \
                                                     __Pyx_GetItemInt_Tuple_Fast(o, i) : \
                                                     __Pyx_GetItemInt_Generic(o, to_py_func(i)))
 static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Tuple_Fast(PyObject *o, Py_ssize_t i) {
-    if (likely(o != Py_None)) {
-        if (likely((0 <= i) & (i < PyTuple_GET_SIZE(o)))) {
-            PyObject *r = PyTuple_GET_ITEM(o, i);
-            Py_INCREF(r);
-            return r;
-        }
-        else if ((-PyTuple_GET_SIZE(o) <= i) & (i < 0)) {
-            PyObject *r = PyTuple_GET_ITEM(o, PyTuple_GET_SIZE(o) + i);
-            Py_INCREF(r);
-            return r;
-        }
+#if CYTHON_COMPILING_IN_CPYTHON
+    if (likely((0 <= i) & (i < PyTuple_GET_SIZE(o)))) {
+        PyObject *r = PyTuple_GET_ITEM(o, i);
+        Py_INCREF(r);
+        return r;
+    }
+    else if ((-PyTuple_GET_SIZE(o) <= i) & (i < 0)) {
+        PyObject *r = PyTuple_GET_ITEM(o, PyTuple_GET_SIZE(o) + i);
+        Py_INCREF(r);
+        return r;
     }
     return __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
+#else
+    return PySequence_GetItem(o, i);
+#endif
 }
 #define __Pyx_GetItemInt(o, i, size, to_py_func) (((size) <= sizeof(Py_ssize_t)) ? \
                                                     __Pyx_GetItemInt_Fast(o, i) : \
                                                     __Pyx_GetItemInt_Generic(o, to_py_func(i)))
 static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Fast(PyObject *o, Py_ssize_t i) {
+#if CYTHON_COMPILING_IN_CPYTHON
     if (PyList_CheckExact(o)) {
         Py_ssize_t n = (likely(i >= 0)) ? i : i + PyList_GET_SIZE(o);
         if (likely((n >= 0) & (n < PyList_GET_SIZE(o)))) {
@@ -1396,19 +1431,30 @@ static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Fast(PyObject *o, Py_ssize_t i)
             Py_INCREF(r);
             return r;
         }
-    }
-    else if (likely(i >= 0)) {
+    } else {  /* inlined PySequence_GetItem() */
         PySequenceMethods *m = Py_TYPE(o)->tp_as_sequence;
         if (likely(m && m->sq_item)) {
+            if (unlikely(i < 0) && likely(m->sq_length)) {
+                Py_ssize_t l = m->sq_length(o);
+                if (unlikely(l < 0)) return NULL;
+                i += l;
+            }
             return m->sq_item(o, i);
         }
     }
+#else
+    if (PySequence_Check(o)) {
+        return PySequence_GetItem(o, i);
+    }
+#endif
     return __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
 }
 
+static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected);
+
 static CYTHON_INLINE void __Pyx_RaiseNeedMoreValuesError(Py_ssize_t index);
 
-static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected);
+static CYTHON_INLINE int __Pyx_IterFinish(void); /*proto*/
 
 static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected); /*proto*/
 
@@ -1419,13 +1465,20 @@ static CYTHON_INLINE PyObject* __Pyx_PyBoolOrNull_FromLong(long b) {
     return unlikely(b < 0) ? NULL : __Pyx_PyBool_FromLong(b);
 }
 
-#define __Pyx_PyIter_Next(obj) __Pyx_PyIter_Next2(obj, NULL);
+#define __Pyx_PyIter_Next(obj) __Pyx_PyIter_Next2(obj, NULL)
 static CYTHON_INLINE PyObject *__Pyx_PyIter_Next2(PyObject *, PyObject *); /*proto*/
 
 static double __Pyx__PyObject_AsDouble(PyObject* obj); /* proto */
+#if CYTHON_COMPILING_IN_PYPY
+#define __Pyx_PyObject_AsDouble(obj) \
+(likely(PyFloat_CheckExact(obj)) ? PyFloat_AS_DOUBLE(obj) : \
+ likely(PyInt_CheckExact(obj)) ? \
+ PyFloat_AsDouble(obj) : __Pyx__PyObject_AsDouble(obj))
+#else
 #define __Pyx_PyObject_AsDouble(obj) \
 ((likely(PyFloat_CheckExact(obj))) ? \
  PyFloat_AS_DOUBLE(obj) : __Pyx__PyObject_AsDouble(obj))
+#endif
 
 static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
 
@@ -1439,6 +1492,45 @@ static PyObject *__Pyx_FindPy2Metaclass(PyObject *bases); /*proto*/
 static PyObject *__Pyx_CreateClass(PyObject *bases, PyObject *dict, PyObject *name,
                                    PyObject *modname); /*proto*/
 
+#ifndef __Pyx_CppExn2PyErr
+#include <new>
+#include <typeinfo>
+#include <stdexcept>
+#include <ios>
+static void __Pyx_CppExn2PyErr() {
+  try {
+    if (PyErr_Occurred())
+      ; // let the latest Python exn pass through and ignore the current one
+    else
+      throw;
+  } catch (const std::bad_alloc& exn) {
+    PyErr_SetString(PyExc_MemoryError, exn.what());
+  } catch (const std::bad_cast& exn) {
+    PyErr_SetString(PyExc_TypeError, exn.what());
+  } catch (const std::domain_error& exn) {
+    PyErr_SetString(PyExc_ValueError, exn.what());
+  } catch (const std::invalid_argument& exn) {
+    PyErr_SetString(PyExc_ValueError, exn.what());
+  } catch (const std::ios_base::failure& exn) {
+    PyErr_SetString(PyExc_IOError, exn.what());
+  } catch (const std::out_of_range& exn) {
+    PyErr_SetString(PyExc_IndexError, exn.what());
+  } catch (const std::overflow_error& exn) {
+    PyErr_SetString(PyExc_OverflowError, exn.what());
+  } catch (const std::range_error& exn) {
+    PyErr_SetString(PyExc_ArithmeticError, exn.what());
+  } catch (const std::underflow_error& exn) {
+    PyErr_SetString(PyExc_ArithmeticError, exn.what());
+  } catch (const std::exception& exn) {
+    PyErr_SetString(PyExc_RuntimeError, exn.what());
+  }
+  catch (...)
+  {
+    PyErr_SetString(PyExc_RuntimeError, "Unknown exception");
+  }
+}
+#endif
+
 static CYTHON_INLINE WordID __Pyx_PyInt_from_py_WordID(PyObject *);
 
 static PyObject* __Pyx_Globals(void); /*proto*/
@@ -1536,6 +1628,7 @@ static CYTHON_INLINE void __Pyx_ExceptionSwap(PyObject **type, PyObject **value,
 
 #define __Pyx_Generator_USED
 #include <structmember.h>
+#include <frameobject.h>
 typedef PyObject *(*__pyx_generator_body_t)(PyObject *, PyObject *);
 typedef struct {
     PyObject_HEAD
@@ -1548,10 +1641,17 @@ typedef struct {
     PyObject *exc_traceback;
     PyObject *gi_weakreflist;
     PyObject *classobj;
+    PyObject *yieldfrom;
 } __pyx_GeneratorObject;
 static __pyx_GeneratorObject *__Pyx_Generator_New(__pyx_generator_body_t body,
                                                   PyObject *closure);
 static int __pyx_Generator_init(void);
+static int __Pyx_Generator_clear(PyObject* self);
+#if 1 || PY_VERSION_HEX < 0x030300B0
+static int __Pyx_PyGen_FetchStopIterationValue(PyObject **pvalue);
+#else
+#define __Pyx_PyGen_FetchStopIterationValue(pvalue) PyGen_FetchStopIterationValue(pvalue)
+#endif
 
 static int __Pyx_check_binary_version(void);
 
@@ -1593,6 +1693,8 @@ static void __Pyx_AddTraceback(const char *funcname, int c_line,
 static int __Pyx_InitStrings(__Pyx_StringTabEntry *t); /*proto*/
 
 
+/* Module declarations from 'libc.string' */
+
 /* Module declarations from 'libcpp.string' */
 
 /* Module declarations from 'libcpp.vector' */
@@ -1826,7 +1928,8 @@ static int __pyx_pf_5_cdec_6Metric___cinit__(struct __pyx_obj_5_cdec_Metric *__p
 static PyObject *__pyx_pf_5_cdec_6Metric_2__call__(struct __pyx_obj_5_cdec_Metric *__pyx_v_self, PyObject *__pyx_v_refs); /* proto */
 static PyObject *__pyx_pf_5_cdec_6Metric_4score(CYTHON_UNUSED struct __pyx_obj_5_cdec_Metric *__pyx_v_stats); /* proto */
 static PyObject *__pyx_pf_5_cdec_6Metric_6evaluate(CYTHON_UNUSED struct __pyx_obj_5_cdec_Metric *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v_hyp, CYTHON_UNUSED PyObject *__pyx_v_refs); /* proto */
-static PyObject *__pyx_pf_5_cdec_2_make_config(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_config); /* proto */
+static PyObject *__pyx_pf_5_cdec_2set_silent(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_yn); /* proto */
+static PyObject *__pyx_pf_5_cdec_4_make_config(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_config); /* proto */
 static PyObject *__pyx_pf_5_cdec_7Decoder_9__cinit___genexpr(PyObject *__pyx_self); /* proto */
 static int __pyx_pf_5_cdec_7Decoder___cinit__(struct __pyx_obj_5_cdec_Decoder *__pyx_v_self, PyObject *__pyx_v_config_str, PyObject *__pyx_v_config); /* proto */
 static void __pyx_pf_5_cdec_7Decoder_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_5_cdec_Decoder *__pyx_v_self); /* proto */
@@ -1859,7 +1962,7 @@ static char __pyx_k_27[] = "digraph lattice {";
   static char __pyx_k_32[] = "\\\"";
   static char __pyx_k_34[] = "%d [shape=doublecircle]";
 static char __pyx_k_35[] = "}";
-static char __pyx_k_38[] = "/home/cdyer/cdec/python/src/lattice.pxi";
+static char __pyx_k_38[] = "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi";
 static char __pyx_k_39[] = "\n";
 static char __pyx_k_41[] = "sufficient stats vector index out of range";
 static char __pyx_k_43[] = "candidate set index out of range";
@@ -1871,14 +1974,15 @@ 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[] = "/home/cdyer/cdec/python/src/grammar.pxi";
-static char __pyx_k_64[] = "/home/cdyer/cdec/python/src/_cdec.pyx";
+static char __pyx_k_58[] = "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi";
+static char __pyx_k_64[] = "/Users/vchahun/Sandbox/cdec/python/src/_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__TER[] = "TER";
 static char __pyx_k___sa[] = "_sa";
@@ -1954,6 +2058,7 @@ static char __pyx_k__ValueError[] = "ValueError";
 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__PhraseModel_[] = "PhraseModel_";
@@ -2075,6 +2180,7 @@ static PyObject *__pyx_n_s__score;
 static PyObject *__pyx_n_s__scores;
 static PyObject *__pyx_n_s__self;
 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;
@@ -2084,6 +2190,7 @@ static PyObject *__pyx_n_s__tagger;
 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_int_65536;
@@ -2110,9 +2217,11 @@ 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_65;
 static PyObject *__pyx_k_codeobj_37;
 static PyObject *__pyx_k_codeobj_57;
 static PyObject *__pyx_k_codeobj_63;
+static PyObject *__pyx_k_codeobj_66;
 
 /* "_cdec.pyx":6
  * cimport decoder
@@ -2274,7 +2383,7 @@ static int __pyx_pw_5_cdec_11DenseVector_1__init__(PyObject *__pyx_v_self, PyObj
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":7
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":7
  *     cdef bint owned # if True, do not manage memory
  * 
  *     def __init__(self):             # <<<<<<<<<<<<<<
@@ -2287,7 +2396,7 @@ static int __pyx_pf_5_cdec_11DenseVector___init__(struct __pyx_obj_5_cdec_DenseV
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__init__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":8
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":8
  * 
  *     def __init__(self):
  *         self.vector = new vector[weight_t]()             # <<<<<<<<<<<<<<
@@ -2296,7 +2405,7 @@ static int __pyx_pf_5_cdec_11DenseVector___init__(struct __pyx_obj_5_cdec_DenseV
  */
   __pyx_v_self->vector = new std::vector<weight_t>();
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":9
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":9
  *     def __init__(self):
  *         self.vector = new vector[weight_t]()
  *         self.owned = False             # <<<<<<<<<<<<<<
@@ -2319,7 +2428,7 @@ static void __pyx_pw_5_cdec_11DenseVector_3__dealloc__(PyObject *__pyx_v_self) {
   __Pyx_RefNannyFinishContext();
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":11
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":11
  *         self.owned = False
  * 
  *     def __dealloc__(self):             # <<<<<<<<<<<<<<
@@ -2332,7 +2441,7 @@ static void __pyx_pf_5_cdec_11DenseVector_2__dealloc__(struct __pyx_obj_5_cdec_D
   int __pyx_t_1;
   __Pyx_RefNannySetupContext("__dealloc__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":12
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":12
  * 
  *     def __dealloc__(self):
  *         if not self.owned:             # <<<<<<<<<<<<<<
@@ -2342,7 +2451,7 @@ static void __pyx_pf_5_cdec_11DenseVector_2__dealloc__(struct __pyx_obj_5_cdec_D
   __pyx_t_1 = (!__pyx_v_self->owned);
   if (__pyx_t_1) {
 
-    /* "/home/cdyer/cdec/python/src/vectors.pxi":13
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":13
  *     def __dealloc__(self):
  *         if not self.owned:
  *             del self.vector             # <<<<<<<<<<<<<<
@@ -2368,7 +2477,7 @@ static Py_ssize_t __pyx_pw_5_cdec_11DenseVector_5__len__(PyObject *__pyx_v_self)
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":15
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":15
  *             del self.vector
  * 
  *     def __len__(self):             # <<<<<<<<<<<<<<
@@ -2381,7 +2490,7 @@ static Py_ssize_t __pyx_pf_5_cdec_11DenseVector_4__len__(struct __pyx_obj_5_cdec
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__len__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":16
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":16
  * 
  *     def __len__(self):
  *         return self.vector.size()             # <<<<<<<<<<<<<<
@@ -2418,7 +2527,7 @@ static PyObject *__pyx_pw_5_cdec_11DenseVector_7__getitem__(PyObject *__pyx_v_se
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":18
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":18
  *         return self.vector.size()
  * 
  *     def __getitem__(self, char* fname):             # <<<<<<<<<<<<<<
@@ -2438,7 +2547,7 @@ static PyObject *__pyx_pf_5_cdec_11DenseVector_6__getitem__(struct __pyx_obj_5_c
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__getitem__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":19
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":19
  * 
  *     def __getitem__(self, char* fname):
  *         cdef int fid = FDConvert(fname)             # <<<<<<<<<<<<<<
@@ -2447,7 +2556,7 @@ static PyObject *__pyx_pf_5_cdec_11DenseVector_6__getitem__(struct __pyx_obj_5_c
  */
   __pyx_v_fid = FD::Convert(__pyx_v_fname);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":20
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":20
  *     def __getitem__(self, char* fname):
  *         cdef int fid = FDConvert(fname)
  *         if 0 <= fid < self.vector.size():             # <<<<<<<<<<<<<<
@@ -2460,7 +2569,7 @@ static PyObject *__pyx_pf_5_cdec_11DenseVector_6__getitem__(struct __pyx_obj_5_c
   }
   if (__pyx_t_1) {
 
-    /* "/home/cdyer/cdec/python/src/vectors.pxi":21
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":21
  *         cdef int fid = FDConvert(fname)
  *         if 0 <= fid < self.vector.size():
  *             return self.vector[0][fid]             # <<<<<<<<<<<<<<
@@ -2477,7 +2586,7 @@ static PyObject *__pyx_pf_5_cdec_11DenseVector_6__getitem__(struct __pyx_obj_5_c
   }
   __pyx_L3:;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":22
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":22
  *         if 0 <= fid < self.vector.size():
  *             return self.vector[0][fid]
  *         raise KeyError(fname)             # <<<<<<<<<<<<<<
@@ -2536,7 +2645,7 @@ static int __pyx_pw_5_cdec_11DenseVector_9__setitem__(PyObject *__pyx_v_self, Py
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":24
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":24
  *         raise KeyError(fname)
  * 
  *     def __setitem__(self, char* fname, float value):             # <<<<<<<<<<<<<<
@@ -2556,7 +2665,7 @@ static int __pyx_pf_5_cdec_11DenseVector_8__setitem__(struct __pyx_obj_5_cdec_De
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__setitem__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":25
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":25
  * 
  *     def __setitem__(self, char* fname, float value):
  *         cdef int fid = FDConvert(<char *>fname)             # <<<<<<<<<<<<<<
@@ -2565,7 +2674,7 @@ static int __pyx_pf_5_cdec_11DenseVector_8__setitem__(struct __pyx_obj_5_cdec_De
  */
   __pyx_v_fid = FD::Convert(((char *)__pyx_v_fname));
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":26
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":26
  *     def __setitem__(self, char* fname, float value):
  *         cdef int fid = FDConvert(<char *>fname)
  *         if fid < 0: raise KeyError(fname)             # <<<<<<<<<<<<<<
@@ -2591,7 +2700,7 @@ static int __pyx_pf_5_cdec_11DenseVector_8__setitem__(struct __pyx_obj_5_cdec_De
   }
   __pyx_L3:;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":27
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":27
  *         cdef int fid = FDConvert(<char *>fname)
  *         if fid < 0: raise KeyError(fname)
  *         if self.vector.size() <= fid:             # <<<<<<<<<<<<<<
@@ -2601,7 +2710,7 @@ static int __pyx_pf_5_cdec_11DenseVector_8__setitem__(struct __pyx_obj_5_cdec_De
   __pyx_t_1 = (__pyx_v_self->vector->size() <= __pyx_v_fid);
   if (__pyx_t_1) {
 
-    /* "/home/cdyer/cdec/python/src/vectors.pxi":28
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":28
  *         if fid < 0: raise KeyError(fname)
  *         if self.vector.size() <= fid:
  *             self.vector.resize(fid + 1)             # <<<<<<<<<<<<<<
@@ -2613,7 +2722,7 @@ static int __pyx_pf_5_cdec_11DenseVector_8__setitem__(struct __pyx_obj_5_cdec_De
   }
   __pyx_L4:;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":29
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":29
  *         if self.vector.size() <= fid:
  *             self.vector.resize(fid + 1)
  *         self.vector[0][fid] = value             # <<<<<<<<<<<<<<
@@ -2646,7 +2755,7 @@ static PyObject *__pyx_pw_5_cdec_11DenseVector_11__iter__(PyObject *__pyx_v_self
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":31
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":31
  *         self.vector[0][fid] = value
  * 
  *     def __iter__(self):             # <<<<<<<<<<<<<<
@@ -2711,7 +2820,7 @@ static PyObject *__pyx_gb_5_cdec_11DenseVector_12generator(__pyx_GeneratorObject
   __pyx_L3_first_run:;
   if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":33
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":33
  *     def __iter__(self):
  *         cdef unsigned fid
  *         for fid in range(1, self.vector.size()):             # <<<<<<<<<<<<<<
@@ -2722,7 +2831,7 @@ static PyObject *__pyx_gb_5_cdec_11DenseVector_12generator(__pyx_GeneratorObject
   for (__pyx_t_2 = 1; __pyx_t_2 < __pyx_t_1; __pyx_t_2+=1) {
     __pyx_cur_scope->__pyx_v_fid = __pyx_t_2;
 
-    /* "/home/cdyer/cdec/python/src/vectors.pxi":34
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":34
  *         cdef unsigned fid
  *         for fid in range(1, self.vector.size()):
  *             yield FDConvert(fid).c_str(), self.vector[0][fid]             # <<<<<<<<<<<<<<
@@ -2765,6 +2874,7 @@ static PyObject *__pyx_gb_5_cdec_11DenseVector_12generator(__pyx_GeneratorObject
   __pyx_L0:;
   __Pyx_XDECREF(__pyx_r);
   __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
   __Pyx_RefNannyFinishContext();
   return NULL;
 }
@@ -2785,7 +2895,7 @@ static PyObject *__pyx_pw_5_cdec_11DenseVector_14dot(PyObject *__pyx_v_self, PyO
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":36
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":36
  *             yield FDConvert(fid).c_str(), self.vector[0][fid]
  * 
  *     def dot(self, SparseVector other):             # <<<<<<<<<<<<<<
@@ -2804,7 +2914,7 @@ static PyObject *__pyx_pf_5_cdec_11DenseVector_13dot(struct __pyx_obj_5_cdec_Den
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("dot", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":37
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":37
  * 
  *     def dot(self, SparseVector other):
  *         return other.dot(self)             # <<<<<<<<<<<<<<
@@ -2852,7 +2962,7 @@ static PyObject *__pyx_pw_5_cdec_11DenseVector_16tosparse(PyObject *__pyx_v_self
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":39
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":39
  *         return other.dot(self)
  * 
  *     def tosparse(self):             # <<<<<<<<<<<<<<
@@ -2870,7 +2980,7 @@ static PyObject *__pyx_pf_5_cdec_11DenseVector_15tosparse(struct __pyx_obj_5_cde
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("tosparse", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":40
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":40
  * 
  *     def tosparse(self):
  *         cdef SparseVector sparse = SparseVector.__new__(SparseVector)             # <<<<<<<<<<<<<<
@@ -2883,7 +2993,7 @@ static PyObject *__pyx_pf_5_cdec_11DenseVector_15tosparse(struct __pyx_obj_5_cde
   __pyx_v_sparse = ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":41
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":41
  *     def tosparse(self):
  *         cdef SparseVector sparse = SparseVector.__new__(SparseVector)
  *         sparse.vector = new FastSparseVector[weight_t]()             # <<<<<<<<<<<<<<
@@ -2892,7 +3002,7 @@ static PyObject *__pyx_pf_5_cdec_11DenseVector_15tosparse(struct __pyx_obj_5_cde
  */
   __pyx_v_sparse->vector = new FastSparseVector<weight_t>();
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":42
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":42
  *         cdef SparseVector sparse = SparseVector.__new__(SparseVector)
  *         sparse.vector = new FastSparseVector[weight_t]()
  *         InitSparseVector(self.vector[0], sparse.vector)             # <<<<<<<<<<<<<<
@@ -2901,7 +3011,7 @@ static PyObject *__pyx_pf_5_cdec_11DenseVector_15tosparse(struct __pyx_obj_5_cde
  */
   Weights::InitSparseVector((__pyx_v_self->vector[0]), __pyx_v_sparse->vector);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":43
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":43
  *         sparse.vector = new FastSparseVector[weight_t]()
  *         InitSparseVector(self.vector[0], sparse.vector)
  *         return sparse             # <<<<<<<<<<<<<<
@@ -2940,7 +3050,7 @@ static int __pyx_pw_5_cdec_12SparseVector_1__init__(PyObject *__pyx_v_self, PyOb
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":48
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":48
  *     cdef FastSparseVector[weight_t]* vector
  * 
  *     def __init__(self):             # <<<<<<<<<<<<<<
@@ -2953,7 +3063,7 @@ static int __pyx_pf_5_cdec_12SparseVector___init__(struct __pyx_obj_5_cdec_Spars
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__init__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":49
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":49
  * 
  *     def __init__(self):
  *         self.vector = new FastSparseVector[weight_t]()             # <<<<<<<<<<<<<<
@@ -2976,7 +3086,7 @@ static void __pyx_pw_5_cdec_12SparseVector_3__dealloc__(PyObject *__pyx_v_self)
   __Pyx_RefNannyFinishContext();
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":51
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":51
  *         self.vector = new FastSparseVector[weight_t]()
  * 
  *     def __dealloc__(self):             # <<<<<<<<<<<<<<
@@ -2988,7 +3098,7 @@ static void __pyx_pf_5_cdec_12SparseVector_2__dealloc__(CYTHON_UNUSED struct __p
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__dealloc__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":52
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":52
  * 
  *     def __dealloc__(self):
  *         del self.vector             # <<<<<<<<<<<<<<
@@ -3011,7 +3121,7 @@ static PyObject *__pyx_pw_5_cdec_12SparseVector_5copy(PyObject *__pyx_v_self, CY
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":54
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":54
  *         del self.vector
  * 
  *     def copy(self):             # <<<<<<<<<<<<<<
@@ -3028,7 +3138,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_4copy(struct __pyx_obj_5_cdec_Sp
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("copy", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":55
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":55
  * 
  *     def copy(self):
  *         return self * 1             # <<<<<<<<<<<<<<
@@ -3075,7 +3185,7 @@ static PyObject *__pyx_pw_5_cdec_12SparseVector_7__getitem__(PyObject *__pyx_v_s
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":57
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":57
  *         return self * 1
  * 
  *     def __getitem__(self, char* fname):             # <<<<<<<<<<<<<<
@@ -3095,7 +3205,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_6__getitem__(struct __pyx_obj_5_
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__getitem__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":58
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":58
  * 
  *     def __getitem__(self, char* fname):
  *         cdef int fid = FDConvert(fname)             # <<<<<<<<<<<<<<
@@ -3104,7 +3214,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_6__getitem__(struct __pyx_obj_5_
  */
   __pyx_v_fid = FD::Convert(__pyx_v_fname);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":59
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":59
  *     def __getitem__(self, char* fname):
  *         cdef int fid = FDConvert(fname)
  *         if fid < 0: raise KeyError(fname)             # <<<<<<<<<<<<<<
@@ -3130,7 +3240,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_6__getitem__(struct __pyx_obj_5_
   }
   __pyx_L3:;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":60
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":60
  *         cdef int fid = FDConvert(fname)
  *         if fid < 0: raise KeyError(fname)
  *         return self.vector.value(fid)             # <<<<<<<<<<<<<<
@@ -3182,7 +3292,7 @@ static int __pyx_pw_5_cdec_12SparseVector_9__setitem__(PyObject *__pyx_v_self, P
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":62
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":62
  *         return self.vector.value(fid)
  * 
  *     def __setitem__(self, char* fname, float value):             # <<<<<<<<<<<<<<
@@ -3202,7 +3312,7 @@ static int __pyx_pf_5_cdec_12SparseVector_8__setitem__(struct __pyx_obj_5_cdec_S
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__setitem__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":63
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":63
  * 
  *     def __setitem__(self, char* fname, float value):
  *         cdef int fid = FDConvert(<char *>fname)             # <<<<<<<<<<<<<<
@@ -3211,7 +3321,7 @@ static int __pyx_pf_5_cdec_12SparseVector_8__setitem__(struct __pyx_obj_5_cdec_S
  */
   __pyx_v_fid = FD::Convert(((char *)__pyx_v_fname));
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":64
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":64
  *     def __setitem__(self, char* fname, float value):
  *         cdef int fid = FDConvert(<char *>fname)
  *         if fid < 0: raise KeyError(fname)             # <<<<<<<<<<<<<<
@@ -3237,7 +3347,7 @@ static int __pyx_pf_5_cdec_12SparseVector_8__setitem__(struct __pyx_obj_5_cdec_S
   }
   __pyx_L3:;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":65
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":65
  *         cdef int fid = FDConvert(<char *>fname)
  *         if fid < 0: raise KeyError(fname)
  *         self.vector.set_value(fid, value)             # <<<<<<<<<<<<<<
@@ -3270,7 +3380,7 @@ static PyObject *__pyx_pw_5_cdec_12SparseVector_11__iter__(PyObject *__pyx_v_sel
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":67
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":67
  *         self.vector.set_value(fid, value)
  * 
  *     def __iter__(self):             # <<<<<<<<<<<<<<
@@ -3335,7 +3445,7 @@ static PyObject *__pyx_gb_5_cdec_12SparseVector_12generator1(__pyx_GeneratorObje
   __pyx_L3_first_run:;
   if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 67; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":68
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":68
  * 
  *     def __iter__(self):
  *         cdef FastSparseVector[weight_t].const_iterator* it = new FastSparseVector[weight_t].const_iterator(self.vector[0], False)             # <<<<<<<<<<<<<<
@@ -3344,7 +3454,7 @@ static PyObject *__pyx_gb_5_cdec_12SparseVector_12generator1(__pyx_GeneratorObje
  */
   __pyx_cur_scope->__pyx_v_it = new FastSparseVector<weight_t>::const_iterator((__pyx_cur_scope->__pyx_v_self->vector[0]), 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":70
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":70
  *         cdef FastSparseVector[weight_t].const_iterator* it = new FastSparseVector[weight_t].const_iterator(self.vector[0], False)
  *         cdef unsigned i
  *         try:             # <<<<<<<<<<<<<<
@@ -3353,7 +3463,7 @@ static PyObject *__pyx_gb_5_cdec_12SparseVector_12generator1(__pyx_GeneratorObje
  */
   /*try:*/ {
 
-    /* "/home/cdyer/cdec/python/src/vectors.pxi":71
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":71
  *         cdef unsigned i
  *         try:
  *             for i in range(self.vector.size()):             # <<<<<<<<<<<<<<
@@ -3364,7 +3474,7 @@ static PyObject *__pyx_gb_5_cdec_12SparseVector_12generator1(__pyx_GeneratorObje
     for (__pyx_t_2 = 0; __pyx_t_2 < __pyx_t_1; __pyx_t_2+=1) {
       __pyx_cur_scope->__pyx_v_i = __pyx_t_2;
 
-      /* "/home/cdyer/cdec/python/src/vectors.pxi":72
+      /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":72
  *         try:
  *             for i in range(self.vector.size()):
  *                 yield (FDConvert(it[0].ptr().first).c_str(), it[0].ptr().second)             # <<<<<<<<<<<<<<
@@ -3397,7 +3507,7 @@ static PyObject *__pyx_gb_5_cdec_12SparseVector_12generator1(__pyx_GeneratorObje
       __pyx_t_2 = __pyx_cur_scope->__pyx_t_1;
       if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 72; __pyx_clineno = __LINE__; goto __pyx_L5;}
 
-      /* "/home/cdyer/cdec/python/src/vectors.pxi":73
+      /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":73
  *             for i in range(self.vector.size()):
  *                 yield (FDConvert(it[0].ptr().first).c_str(), it[0].ptr().second)
  *                 pinc(it[0]) # ++it             # <<<<<<<<<<<<<<
@@ -3408,7 +3518,7 @@ static PyObject *__pyx_gb_5_cdec_12SparseVector_12generator1(__pyx_GeneratorObje
     }
   }
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":75
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":75
  *                 pinc(it[0]) # ++it
  *         finally:
  *             del it             # <<<<<<<<<<<<<<
@@ -3453,6 +3563,7 @@ static PyObject *__pyx_gb_5_cdec_12SparseVector_12generator1(__pyx_GeneratorObje
   __pyx_L0:;
   __Pyx_XDECREF(__pyx_r);
   __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
   __Pyx_RefNannyFinishContext();
   return NULL;
 }
@@ -3468,7 +3579,7 @@ static PyObject *__pyx_pw_5_cdec_12SparseVector_14dot(PyObject *__pyx_v_self, Py
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":77
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":77
  *             del it
  * 
  *     def dot(self, other):             # <<<<<<<<<<<<<<
@@ -3487,7 +3598,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_13dot(struct __pyx_obj_5_cdec_Sp
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("dot", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":78
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":78
  * 
  *     def dot(self, other):
  *         if isinstance(other, DenseVector):             # <<<<<<<<<<<<<<
@@ -3500,7 +3611,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_13dot(struct __pyx_obj_5_cdec_Sp
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   if (__pyx_t_2) {
 
-    /* "/home/cdyer/cdec/python/src/vectors.pxi":79
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":79
  *     def dot(self, other):
  *         if isinstance(other, DenseVector):
  *             return self.vector.dot((<DenseVector> other).vector[0])             # <<<<<<<<<<<<<<
@@ -3516,7 +3627,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_13dot(struct __pyx_obj_5_cdec_Sp
     goto __pyx_L3;
   }
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":80
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":80
  *         if isinstance(other, DenseVector):
  *             return self.vector.dot((<DenseVector> other).vector[0])
  *         elif isinstance(other, SparseVector):             # <<<<<<<<<<<<<<
@@ -3529,7 +3640,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_13dot(struct __pyx_obj_5_cdec_Sp
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   if (__pyx_t_2) {
 
-    /* "/home/cdyer/cdec/python/src/vectors.pxi":81
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":81
  *             return self.vector.dot((<DenseVector> other).vector[0])
  *         elif isinstance(other, SparseVector):
  *             return self.vector.dot((<SparseVector> other).vector[0])             # <<<<<<<<<<<<<<
@@ -3546,7 +3657,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_13dot(struct __pyx_obj_5_cdec_Sp
   }
   __pyx_L3:;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":82
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":82
  *         elif isinstance(other, SparseVector):
  *             return self.vector.dot((<SparseVector> other).vector[0])
  *         raise TypeError('cannot take the dot product of %s and SparseVector' % type(other))             # <<<<<<<<<<<<<<
@@ -3597,7 +3708,7 @@ static PyObject *__pyx_pw_5_cdec_12SparseVector_16__richcmp__(PyObject *__pyx_v_
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":84
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":84
  *         raise TypeError('cannot take the dot product of %s and SparseVector' % type(other))
  * 
  *     def __richcmp__(SparseVector x, SparseVector y, int op):             # <<<<<<<<<<<<<<
@@ -3615,7 +3726,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_15__richcmp__(struct __pyx_obj_5
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__richcmp__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":87
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":87
  *         if op == 2: # ==
  *             return x.vector[0] == y.vector[0]
  *         elif op == 3: # !=             # <<<<<<<<<<<<<<
@@ -3624,7 +3735,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_15__richcmp__(struct __pyx_obj_5
  */
   switch (__pyx_v_op) {
 
-    /* "/home/cdyer/cdec/python/src/vectors.pxi":85
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":85
  * 
  *     def __richcmp__(SparseVector x, SparseVector y, int op):
  *         if op == 2: # ==             # <<<<<<<<<<<<<<
@@ -3633,7 +3744,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_15__richcmp__(struct __pyx_obj_5
  */
     case 2:
 
-    /* "/home/cdyer/cdec/python/src/vectors.pxi":86
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":86
  *     def __richcmp__(SparseVector x, SparseVector y, int op):
  *         if op == 2: # ==
  *             return x.vector[0] == y.vector[0]             # <<<<<<<<<<<<<<
@@ -3648,7 +3759,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_15__richcmp__(struct __pyx_obj_5
     goto __pyx_L0;
     break;
 
-    /* "/home/cdyer/cdec/python/src/vectors.pxi":87
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":87
  *         if op == 2: # ==
  *             return x.vector[0] == y.vector[0]
  *         elif op == 3: # !=             # <<<<<<<<<<<<<<
@@ -3657,7 +3768,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_15__richcmp__(struct __pyx_obj_5
  */
     case 3:
 
-    /* "/home/cdyer/cdec/python/src/vectors.pxi":88
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":88
  *             return x.vector[0] == y.vector[0]
  *         elif op == 3: # !=
  *             return not (x == y)             # <<<<<<<<<<<<<<
@@ -3677,7 +3788,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_15__richcmp__(struct __pyx_obj_5
     break;
   }
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":89
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":89
  *         elif op == 3: # !=
  *             return not (x == y)
  *         raise NotImplemented('comparison not implemented for SparseVector')             # <<<<<<<<<<<<<<
@@ -3713,7 +3824,7 @@ static Py_ssize_t __pyx_pw_5_cdec_12SparseVector_18__len__(PyObject *__pyx_v_sel
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":91
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":91
  *         raise NotImplemented('comparison not implemented for SparseVector')
  * 
  *     def __len__(self):             # <<<<<<<<<<<<<<
@@ -3726,7 +3837,7 @@ static Py_ssize_t __pyx_pf_5_cdec_12SparseVector_17__len__(struct __pyx_obj_5_cd
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__len__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":92
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":92
  * 
  *     def __len__(self):
  *         return self.vector.size()             # <<<<<<<<<<<<<<
@@ -3763,7 +3874,7 @@ static int __pyx_pw_5_cdec_12SparseVector_20__contains__(PyObject *__pyx_v_self,
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":94
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":94
  *         return self.vector.size()
  * 
  *     def __contains__(self, char* fname):             # <<<<<<<<<<<<<<
@@ -3776,7 +3887,7 @@ static int __pyx_pf_5_cdec_12SparseVector_19__contains__(struct __pyx_obj_5_cdec
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__contains__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":95
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":95
  * 
  *     def __contains__(self, char* fname):
  *         return self.vector.nonzero(FDConvert(fname))             # <<<<<<<<<<<<<<
@@ -3803,7 +3914,7 @@ static PyObject *__pyx_pw_5_cdec_12SparseVector_22__neg__(PyObject *__pyx_v_self
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":97
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":97
  *         return self.vector.nonzero(FDConvert(fname))
  * 
  *     def __neg__(self):             # <<<<<<<<<<<<<<
@@ -3821,7 +3932,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_21__neg__(struct __pyx_obj_5_cde
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__neg__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":98
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":98
  * 
  *     def __neg__(self):
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)             # <<<<<<<<<<<<<<
@@ -3834,7 +3945,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_21__neg__(struct __pyx_obj_5_cde
   __pyx_v_result = ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":99
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":99
  *     def __neg__(self):
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)
  *         result.vector = new FastSparseVector[weight_t](self.vector[0])             # <<<<<<<<<<<<<<
@@ -3843,7 +3954,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_21__neg__(struct __pyx_obj_5_cde
  */
   __pyx_v_result->vector = new FastSparseVector<weight_t>((__pyx_v_self->vector[0]));
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":100
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":100
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)
  *         result.vector = new FastSparseVector[weight_t](self.vector[0])
  *         result.vector[0] *= -1.0             # <<<<<<<<<<<<<<
@@ -3852,7 +3963,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_21__neg__(struct __pyx_obj_5_cde
  */
   (__pyx_v_result->vector[0]) *= -1.0;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":101
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":101
  *         result.vector = new FastSparseVector[weight_t](self.vector[0])
  *         result.vector[0] *= -1.0
  *         return result             # <<<<<<<<<<<<<<
@@ -3893,7 +4004,7 @@ static PyObject *__pyx_pw_5_cdec_12SparseVector_24__iadd__(PyObject *__pyx_v_sel
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":103
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":103
  *         return result
  * 
  *     def __iadd__(SparseVector self, SparseVector other):             # <<<<<<<<<<<<<<
@@ -3906,7 +4017,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_23__iadd__(struct __pyx_obj_5_cd
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__iadd__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":104
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":104
  * 
  *     def __iadd__(SparseVector self, SparseVector other):
  *         self.vector[0] += other.vector[0]             # <<<<<<<<<<<<<<
@@ -3915,7 +4026,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_23__iadd__(struct __pyx_obj_5_cd
  */
   (__pyx_v_self->vector[0]) += (__pyx_v_other->vector[0]);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":105
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":105
  *     def __iadd__(SparseVector self, SparseVector other):
  *         self.vector[0] += other.vector[0]
  *         return self             # <<<<<<<<<<<<<<
@@ -3950,7 +4061,7 @@ static PyObject *__pyx_pw_5_cdec_12SparseVector_26__isub__(PyObject *__pyx_v_sel
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":107
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":107
  *         return self
  * 
  *     def __isub__(SparseVector self, SparseVector other):             # <<<<<<<<<<<<<<
@@ -3963,7 +4074,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_25__isub__(struct __pyx_obj_5_cd
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__isub__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":108
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":108
  * 
  *     def __isub__(SparseVector self, SparseVector other):
  *         self.vector[0] -= other.vector[0]             # <<<<<<<<<<<<<<
@@ -3972,7 +4083,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_25__isub__(struct __pyx_obj_5_cd
  */
   (__pyx_v_self->vector[0]) -= (__pyx_v_other->vector[0]);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":109
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":109
  *     def __isub__(SparseVector self, SparseVector other):
  *         self.vector[0] -= other.vector[0]
  *         return self             # <<<<<<<<<<<<<<
@@ -4012,7 +4123,7 @@ static PyObject *__pyx_pw_5_cdec_12SparseVector_28__imul__(PyObject *__pyx_v_sel
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":111
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":111
  *         return self
  * 
  *     def __imul__(SparseVector self, float scalar):             # <<<<<<<<<<<<<<
@@ -4025,7 +4136,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_27__imul__(struct __pyx_obj_5_cd
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__imul__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":112
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":112
  * 
  *     def __imul__(SparseVector self, float scalar):
  *         self.vector[0] *= scalar             # <<<<<<<<<<<<<<
@@ -4034,7 +4145,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_27__imul__(struct __pyx_obj_5_cd
  */
   (__pyx_v_self->vector[0]) *= __pyx_v_scalar;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":113
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":113
  *     def __imul__(SparseVector self, float scalar):
  *         self.vector[0] *= scalar
  *         return self             # <<<<<<<<<<<<<<
@@ -4076,7 +4187,7 @@ static PyObject *__pyx_pw_5_cdec_12SparseVector_30__idiv__(PyObject *__pyx_v_sel
 }
 #endif /*!(#if PY_MAJOR_VERSION < 3)*/
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":115
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":115
  *         return self
  * 
  *     def __idiv__(SparseVector self, float scalar):             # <<<<<<<<<<<<<<
@@ -4090,7 +4201,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_29__idiv__(struct __pyx_obj_5_cd
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__idiv__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":116
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":116
  * 
  *     def __idiv__(SparseVector self, float scalar):
  *         self.vector[0] /= scalar             # <<<<<<<<<<<<<<
@@ -4099,7 +4210,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_29__idiv__(struct __pyx_obj_5_cd
  */
   (__pyx_v_self->vector[0]) /= __pyx_v_scalar;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":117
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":117
  *     def __idiv__(SparseVector self, float scalar):
  *         self.vector[0] /= scalar
  *         return self             # <<<<<<<<<<<<<<
@@ -4136,7 +4247,7 @@ static PyObject *__pyx_pw_5_cdec_12SparseVector_32__add__(PyObject *__pyx_v_x, P
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":119
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":119
  *         return self
  * 
  *     def __add__(SparseVector x, SparseVector y):             # <<<<<<<<<<<<<<
@@ -4154,7 +4265,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_31__add__(struct __pyx_obj_5_cde
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__add__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":120
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":120
  * 
  *     def __add__(SparseVector x, SparseVector y):
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)             # <<<<<<<<<<<<<<
@@ -4167,7 +4278,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_31__add__(struct __pyx_obj_5_cde
   __pyx_v_result = ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":121
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":121
  *     def __add__(SparseVector x, SparseVector y):
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)
  *         result.vector = new FastSparseVector[weight_t](x.vector[0] + y.vector[0])             # <<<<<<<<<<<<<<
@@ -4176,7 +4287,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_31__add__(struct __pyx_obj_5_cde
  */
   __pyx_v_result->vector = new FastSparseVector<weight_t>(((__pyx_v_x->vector[0]) + (__pyx_v_y->vector[0])));
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":122
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":122
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)
  *         result.vector = new FastSparseVector[weight_t](x.vector[0] + y.vector[0])
  *         return result             # <<<<<<<<<<<<<<
@@ -4218,7 +4329,7 @@ static PyObject *__pyx_pw_5_cdec_12SparseVector_34__sub__(PyObject *__pyx_v_x, P
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":124
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":124
  *         return result
  * 
  *     def __sub__(SparseVector x, SparseVector y):             # <<<<<<<<<<<<<<
@@ -4236,7 +4347,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_33__sub__(struct __pyx_obj_5_cde
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__sub__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":125
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":125
  * 
  *     def __sub__(SparseVector x, SparseVector y):
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)             # <<<<<<<<<<<<<<
@@ -4249,7 +4360,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_33__sub__(struct __pyx_obj_5_cde
   __pyx_v_result = ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":126
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":126
  *     def __sub__(SparseVector x, SparseVector y):
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)
  *         result.vector = new FastSparseVector[weight_t](x.vector[0] - y.vector[0])             # <<<<<<<<<<<<<<
@@ -4258,7 +4369,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_33__sub__(struct __pyx_obj_5_cde
  */
   __pyx_v_result->vector = new FastSparseVector<weight_t>(((__pyx_v_x->vector[0]) - (__pyx_v_y->vector[0])));
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":127
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":127
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)
  *         result.vector = new FastSparseVector[weight_t](x.vector[0] - y.vector[0])
  *         return result             # <<<<<<<<<<<<<<
@@ -4294,7 +4405,7 @@ static PyObject *__pyx_pw_5_cdec_12SparseVector_36__mul__(PyObject *__pyx_v_x, P
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":129
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":129
  *         return result
  * 
  *     def __mul__(x, y):             # <<<<<<<<<<<<<<
@@ -4316,7 +4427,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_35__mul__(PyObject *__pyx_v_x, P
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__mul__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":132
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":132
  *         cdef SparseVector vector
  *         cdef float scalar
  *         if isinstance(x, SparseVector): vector, scalar = x, y             # <<<<<<<<<<<<<<
@@ -4339,7 +4450,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_35__mul__(PyObject *__pyx_v_x, P
   }
   /*else*/ {
 
-    /* "/home/cdyer/cdec/python/src/vectors.pxi":133
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":133
  *         cdef float scalar
  *         if isinstance(x, SparseVector): vector, scalar = x, y
  *         else: vector, scalar = y, x             # <<<<<<<<<<<<<<
@@ -4356,7 +4467,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_35__mul__(PyObject *__pyx_v_x, P
   }
   __pyx_L3:;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":134
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":134
  *         if isinstance(x, SparseVector): vector, scalar = x, y
  *         else: vector, scalar = y, x
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)             # <<<<<<<<<<<<<<
@@ -4369,7 +4480,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_35__mul__(PyObject *__pyx_v_x, P
   __pyx_v_result = ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":135
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":135
  *         else: vector, scalar = y, x
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)
  *         result.vector = new FastSparseVector[weight_t](vector.vector[0] * scalar)             # <<<<<<<<<<<<<<
@@ -4378,7 +4489,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_35__mul__(PyObject *__pyx_v_x, P
  */
   __pyx_v_result->vector = new FastSparseVector<weight_t>(((__pyx_v_vector->vector[0]) * __pyx_v_scalar));
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":136
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":136
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)
  *         result.vector = new FastSparseVector[weight_t](vector.vector[0] * scalar)
  *         return result             # <<<<<<<<<<<<<<
@@ -4417,7 +4528,7 @@ static PyObject *__pyx_pw_5_cdec_12SparseVector_38__div__(PyObject *__pyx_v_x, P
 }
 #endif /*!(#if PY_MAJOR_VERSION < 3)*/
 
-/* "/home/cdyer/cdec/python/src/vectors.pxi":138
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":138
  *         return result
  * 
  *     def __div__(x, y):             # <<<<<<<<<<<<<<
@@ -4440,7 +4551,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_37__div__(PyObject *__pyx_v_x, P
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__div__", 0);
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":141
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":141
  *         cdef SparseVector vector
  *         cdef float scalar
  *         if isinstance(x, SparseVector): vector, scalar = x, y             # <<<<<<<<<<<<<<
@@ -4463,7 +4574,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_37__div__(PyObject *__pyx_v_x, P
   }
   /*else*/ {
 
-    /* "/home/cdyer/cdec/python/src/vectors.pxi":142
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":142
  *         cdef float scalar
  *         if isinstance(x, SparseVector): vector, scalar = x, y
  *         else: vector, scalar = y, x             # <<<<<<<<<<<<<<
@@ -4480,7 +4591,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_37__div__(PyObject *__pyx_v_x, P
   }
   __pyx_L3:;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":143
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":143
  *         if isinstance(x, SparseVector): vector, scalar = x, y
  *         else: vector, scalar = y, x
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)             # <<<<<<<<<<<<<<
@@ -4493,7 +4604,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_37__div__(PyObject *__pyx_v_x, P
   __pyx_v_result = ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":144
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":144
  *         else: vector, scalar = y, x
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)
  *         result.vector = new FastSparseVector[weight_t](vector.vector[0] / scalar)             # <<<<<<<<<<<<<<
@@ -4501,7 +4612,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_37__div__(PyObject *__pyx_v_x, P
  */
   __pyx_v_result->vector = new FastSparseVector<weight_t>(((__pyx_v_vector->vector[0]) / __pyx_v_scalar));
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":145
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":145
  *         cdef SparseVector result = SparseVector.__new__(SparseVector)
  *         result.vector = new FastSparseVector[weight_t](vector.vector[0] / scalar)
  *         return result             # <<<<<<<<<<<<<<
@@ -4533,14 +4644,13 @@ static PyObject *__pyx_pw_5_cdec_1_phrase(PyObject *__pyx_self, PyObject *__pyx_
   PyObject *__pyx_r = 0;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("_phrase (wrapper)", 0);
-  __pyx_self = __pyx_self;
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   __Pyx_RefNannyFinishContext();
   return __pyx_r;
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 static PyObject *__pyx_gb_5_cdec_7_phrase_2generator18(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":6
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":6
  * 
  * def _phrase(phrase):
  *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)             # <<<<<<<<<<<<<<
@@ -4618,10 +4728,18 @@ static PyObject *__pyx_gb_5_cdec_7_phrase_2generator18(__pyx_GeneratorObject *__
   for (;;) {
     if (!__pyx_t_3 && PyList_CheckExact(__pyx_t_1)) {
       if (__pyx_t_2 >= PyList_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++;
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 6; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else if (!__pyx_t_3 && PyTuple_CheckExact(__pyx_t_1)) {
       if (__pyx_t_2 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++;
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 6; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else {
       __pyx_t_4 = __pyx_t_3(__pyx_t_1);
       if (unlikely(!__pyx_t_4)) {
@@ -4693,11 +4811,12 @@ static PyObject *__pyx_gb_5_cdec_7_phrase_2generator18(__pyx_GeneratorObject *__
   __pyx_L0:;
   __Pyx_XDECREF(__pyx_r);
   __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
   __Pyx_RefNannyFinishContext();
   return NULL;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":5
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":5
  * import cdec.sa._sa as _sa
  * 
  * def _phrase(phrase):             # <<<<<<<<<<<<<<
@@ -4726,7 +4845,7 @@ static PyObject *__pyx_pf_5_cdec__phrase(CYTHON_UNUSED PyObject *__pyx_self, PyO
   __Pyx_INCREF(__pyx_cur_scope->__pyx_v_phrase);
   __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_phrase);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":6
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":6
  * 
  * def _phrase(phrase):
  *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)             # <<<<<<<<<<<<<<
@@ -4771,11 +4890,11 @@ static int __pyx_pw_5_cdec_2NT_1__init__(PyObject *__pyx_v_self, PyObject *__pyx
 static int __pyx_pw_5_cdec_2NT_1__init__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
   char *__pyx_v_cat;
   unsigned int __pyx_v_ref;
-  static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__cat,&__pyx_n_s__ref,0};
   int __pyx_r;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__init__ (wrapper)", 0);
   {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__cat,&__pyx_n_s__ref,0};
     PyObject* values[2] = {0,0};
     if (unlikely(__pyx_kwds)) {
       Py_ssize_t kw_args;
@@ -4789,8 +4908,7 @@ static int __pyx_pw_5_cdec_2NT_1__init__(PyObject *__pyx_v_self, PyObject *__pyx
       kw_args = PyDict_Size(__pyx_kwds);
       switch (pos_args) {
         case  0:
-        values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__cat);
-        if (likely(values[0])) kw_args--;
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__cat)) != 0)) kw_args--;
         else goto __pyx_L5_argtuple_error;
         case  1:
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@@ -4801,10 +4919,6 @@ static int __pyx_pw_5_cdec_2NT_1__init__(PyObject *__pyx_v_self, PyObject *__pyx
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-      if (values[1]) {
-      } else {
-        __pyx_v_ref = ((unsigned int)0);
-      }
     } else {
       switch (PyTuple_GET_SIZE(__pyx_args)) {
         case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
@@ -4833,7 +4947,7 @@ static int __pyx_pw_5_cdec_2NT_1__init__(PyObject *__pyx_v_self, PyObject *__pyx
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":11
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":11
  *     cdef public bytes cat
  *     cdef public unsigned ref
  *     def __init__(self, char* cat, unsigned ref=0):             # <<<<<<<<<<<<<<
@@ -4850,7 +4964,7 @@ static int __pyx_pf_5_cdec_2NT___init__(struct __pyx_obj_5_cdec_NT *__pyx_v_self
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__init__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":12
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":12
  *     cdef public unsigned ref
  *     def __init__(self, char* cat, unsigned ref=0):
  *         self.cat = cat             # <<<<<<<<<<<<<<
@@ -4865,7 +4979,7 @@ static int __pyx_pf_5_cdec_2NT___init__(struct __pyx_obj_5_cdec_NT *__pyx_v_self
   __pyx_v_self->cat = __pyx_t_1;
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":13
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":13
  *     def __init__(self, char* cat, unsigned ref=0):
  *         self.cat = cat
  *         self.ref = ref             # <<<<<<<<<<<<<<
@@ -4896,7 +5010,7 @@ static PyObject *__pyx_pw_5_cdec_2NT_3__str__(PyObject *__pyx_v_self) {
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":15
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":15
  *         self.ref = ref
  * 
  *     def __str__(self):             # <<<<<<<<<<<<<<
@@ -4915,7 +5029,7 @@ static PyObject *__pyx_pf_5_cdec_2NT_2__str__(struct __pyx_obj_5_cdec_NT *__pyx_
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   __Pyx_RefNannySetupContext("__str__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":16
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":16
  * 
  *     def __str__(self):
  *         if self.ref > 0:             # <<<<<<<<<<<<<<
@@ -4925,7 +5039,7 @@ static PyObject *__pyx_pf_5_cdec_2NT_2__str__(struct __pyx_obj_5_cdec_NT *__pyx_
   __pyx_t_1 = (__pyx_v_self->ref > 0);
   if (__pyx_t_1) {
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":17
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":17
  *     def __str__(self):
  *         if self.ref > 0:
  *             return '[%s,%d]' % (self.cat, self.ref)             # <<<<<<<<<<<<<<
@@ -4953,7 +5067,7 @@ static PyObject *__pyx_pf_5_cdec_2NT_2__str__(struct __pyx_obj_5_cdec_NT *__pyx_
   }
   __pyx_L3:;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":18
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":18
  *         if self.ref > 0:
  *             return '[%s,%d]' % (self.cat, self.ref)
  *         return '[%s]' % self.cat             # <<<<<<<<<<<<<<
@@ -4991,7 +5105,7 @@ static PyObject *__pyx_pw_5_cdec_2NT_3cat_1__get__(PyObject *__pyx_v_self) {
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":9
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":9
  * 
  * cdef class NT:
  *     cdef public bytes cat             # <<<<<<<<<<<<<<
@@ -5087,7 +5201,7 @@ static PyObject *__pyx_pw_5_cdec_2NT_3ref_1__get__(PyObject *__pyx_v_self) {
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":10
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":10
  * cdef class NT:
  *     cdef public bytes cat
  *     cdef public unsigned ref             # <<<<<<<<<<<<<<
@@ -5158,11 +5272,11 @@ static int __pyx_pf_5_cdec_2NT_3ref_2__set__(struct __pyx_obj_5_cdec_NT *__pyx_v
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 static int __pyx_pw_5_cdec_5NTRef_1__init__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
   unsigned int __pyx_v_ref;
-  static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__ref,0};
   int __pyx_r;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__init__ (wrapper)", 0);
   {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__ref,0};
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     if (unlikely(__pyx_kwds)) {
       Py_ssize_t kw_args;
@@ -5175,8 +5289,7 @@ static int __pyx_pw_5_cdec_5NTRef_1__init__(PyObject *__pyx_v_self, PyObject *__
       kw_args = PyDict_Size(__pyx_kwds);
       switch (pos_args) {
         case  0:
-        values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__ref);
-        if (likely(values[0])) kw_args--;
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__ref)) != 0)) kw_args--;
         else goto __pyx_L5_argtuple_error;
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       if (unlikely(kw_args > 0)) {
@@ -5202,7 +5315,7 @@ static int __pyx_pw_5_cdec_5NTRef_1__init__(PyObject *__pyx_v_self, PyObject *__
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":22
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":22
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  *     cdef public unsigned ref
  *     def __init__(self, unsigned ref):             # <<<<<<<<<<<<<<
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   __Pyx_RefNannySetupContext("__init__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":23
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":23
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  *     def __init__(self, unsigned ref):
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   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":25
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":25
  *         self.ref = ref
  * 
  *     def __str__(self):             # <<<<<<<<<<<<<<
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   __Pyx_RefNannySetupContext("__str__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":26
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":26
  * 
  *     def __str__(self):
  *         return '[%d]' % self.ref             # <<<<<<<<<<<<<<
@@ -5299,7 +5412,7 @@ static PyObject *__pyx_pw_5_cdec_5NTRef_3ref_1__get__(PyObject *__pyx_v_self) {
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":21
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":21
  * 
  * cdef class NTRef:
  *     cdef public unsigned ref             # <<<<<<<<<<<<<<
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   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":28
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":28
  *         return '[%d]' % self.ref
  * 
  * cdef TRule convert_rule(_sa.Rule rule):             # <<<<<<<<<<<<<<
@@ -5402,7 +5515,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
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   __Pyx_RefNannySetupContext("convert_rule", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":30
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":30
  * cdef TRule convert_rule(_sa.Rule rule):
  *     cdef unsigned i
  *     cdef lhs = _sa.sym_tocat(rule.lhs)             # <<<<<<<<<<<<<<
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   __pyx_v_lhs = ((PyObject *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":31
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":31
  *     cdef unsigned i
  *     cdef lhs = _sa.sym_tocat(rule.lhs)
  *     cdef scores = {}             # <<<<<<<<<<<<<<
@@ -5426,7 +5539,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
   __pyx_v_scores = ((PyObject *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":32
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":32
  *     cdef lhs = _sa.sym_tocat(rule.lhs)
  *     cdef scores = {}
  *     for i in range(rule.n_scores):             # <<<<<<<<<<<<<<
@@ -5437,7 +5550,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
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     __pyx_v_i = __pyx_t_3;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":33
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":33
  *     cdef scores = {}
  *     for i in range(rule.n_scores):
  *         scores['PhraseModel_'+str(i)] = rule.cscores[i]             # <<<<<<<<<<<<<<
@@ -5464,7 +5577,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   }
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":34
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":34
  *     for i in range(rule.n_scores):
  *         scores['PhraseModel_'+str(i)] = rule.cscores[i]
  *     f, e = [], []             # <<<<<<<<<<<<<<
@@ -5480,7 +5593,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
   __pyx_v_e = __pyx_t_5;
   __pyx_t_5 = 0;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":35
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":35
  *         scores['PhraseModel_'+str(i)] = rule.cscores[i]
  *     f, e = [], []
  *     cdef int* fsyms = rule.f.syms             # <<<<<<<<<<<<<<
@@ -5489,7 +5602,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
  */
   __pyx_v_fsyms = __pyx_v_rule->f->syms;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":36
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":36
  *     f, e = [], []
  *     cdef int* fsyms = rule.f.syms
  *     for i in range(rule.f.n):             # <<<<<<<<<<<<<<
@@ -5500,7 +5613,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
   for (__pyx_t_3 = 0; __pyx_t_3 < __pyx_t_2; __pyx_t_3+=1) {
     __pyx_v_i = __pyx_t_3;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":37
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":37
  *     cdef int* fsyms = rule.f.syms
  *     for i in range(rule.f.n):
  *         if _sa.sym_isvar(fsyms[i]):             # <<<<<<<<<<<<<<
@@ -5510,7 +5623,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
     __pyx_t_6 = __pyx_f_4cdec_2sa_3_sa_sym_isvar((__pyx_v_fsyms[__pyx_v_i]));
     if (__pyx_t_6) {
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":38
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":38
  *     for i in range(rule.f.n):
  *         if _sa.sym_isvar(fsyms[i]):
  *             f.append(NT(_sa.sym_tocat(fsyms[i])))             # <<<<<<<<<<<<<<
@@ -5533,7 +5646,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
     }
     /*else*/ {
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":40
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":40
  *             f.append(NT(_sa.sym_tocat(fsyms[i])))
  *         else:
  *             f.append(_sa.sym_tostring(fsyms[i]))             # <<<<<<<<<<<<<<
@@ -5548,7 +5661,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
     __pyx_L7:;
   }
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":41
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":41
  *         else:
  *             f.append(_sa.sym_tostring(fsyms[i]))
  *     cdef int* esyms = rule.e.syms             # <<<<<<<<<<<<<<
@@ -5557,7 +5670,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
  */
   __pyx_v_esyms = __pyx_v_rule->e->syms;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":42
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":42
  *             f.append(_sa.sym_tostring(fsyms[i]))
  *     cdef int* esyms = rule.e.syms
  *     for i in range(rule.e.n):             # <<<<<<<<<<<<<<
@@ -5568,7 +5681,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
   for (__pyx_t_3 = 0; __pyx_t_3 < __pyx_t_2; __pyx_t_3+=1) {
     __pyx_v_i = __pyx_t_3;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":43
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":43
  *     cdef int* esyms = rule.e.syms
  *     for i in range(rule.e.n):
  *         if _sa.sym_isvar(esyms[i]):             # <<<<<<<<<<<<<<
@@ -5578,7 +5691,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
     __pyx_t_6 = __pyx_f_4cdec_2sa_3_sa_sym_isvar((__pyx_v_esyms[__pyx_v_i]));
     if (__pyx_t_6) {
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":44
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":44
  *     for i in range(rule.e.n):
  *         if _sa.sym_isvar(esyms[i]):
  *             e.append(NTRef(_sa.sym_getindex(esyms[i])))             # <<<<<<<<<<<<<<
@@ -5601,7 +5714,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
     }
     /*else*/ {
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":46
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":46
  *             e.append(NTRef(_sa.sym_getindex(esyms[i])))
  *         else:
  *             e.append(_sa.sym_tostring(esyms[i]))             # <<<<<<<<<<<<<<
@@ -5616,7 +5729,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
     __pyx_L10:;
   }
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":47
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":47
  *         else:
  *             e.append(_sa.sym_tostring(esyms[i]))
  *     cdef a = [(point/65536, point%65536) for point in rule.word_alignments]             # <<<<<<<<<<<<<<
@@ -5636,10 +5749,18 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
   for (;;) {
     if (!__pyx_t_9 && PyList_CheckExact(__pyx_t_1)) {
       if (__pyx_t_8 >= PyList_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_8); __Pyx_INCREF(__pyx_t_4); __pyx_t_8++;
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_8); __pyx_t_8++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 47; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else if (!__pyx_t_9 && PyTuple_CheckExact(__pyx_t_1)) {
       if (__pyx_t_8 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_8); __Pyx_INCREF(__pyx_t_4); __pyx_t_8++;
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_8); __pyx_t_8++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 47; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else {
       __pyx_t_4 = __pyx_t_9(__pyx_t_1);
       if (unlikely(!__pyx_t_4)) {
@@ -5666,7 +5787,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
     __Pyx_GIVEREF(__pyx_t_10);
     __pyx_t_4 = 0;
     __pyx_t_10 = 0;
-    if (unlikely(PyList_Append(__pyx_t_5, (PyObject*)__pyx_t_11))) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 47; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (unlikely(__Pyx_PyList_Append(__pyx_t_5, (PyObject*)__pyx_t_11))) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 47; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(((PyObject *)__pyx_t_11)); __pyx_t_11 = 0;
   }
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
@@ -5674,7 +5795,7 @@ static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_o
   __pyx_v_a = ((PyObject *)__pyx_t_5);
   __Pyx_DECREF(((PyObject *)__pyx_t_5)); __pyx_t_5 = 0;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":48
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":48
  *             e.append(_sa.sym_tostring(esyms[i]))
  *     cdef a = [(point/65536, point%65536) for point in rule.word_alignments]
  *     return TRule(lhs, f, e, scores, a)             # <<<<<<<<<<<<<<
@@ -5736,14 +5857,14 @@ static int __pyx_pw_5_cdec_5TRule_1__init__(PyObject *__pyx_v_self, PyObject *__
   PyObject *__pyx_v_e = 0;
   PyObject *__pyx_v_scores = 0;
   PyObject *__pyx_v_a = 0;
-  static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__lhs,&__pyx_n_s__f,&__pyx_n_s__e,&__pyx_n_s__scores,&__pyx_n_s__a,0};
   int __pyx_r;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__init__ (wrapper)", 0);
   {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__lhs,&__pyx_n_s__f,&__pyx_n_s__e,&__pyx_n_s__scores,&__pyx_n_s__a,0};
     PyObject* values[5] = {0,0,0,0,0};
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":53
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":53
  *     cdef shared_ptr[grammar.TRule]* rule
  * 
  *     def __init__(self, lhs, f, e, scores, a=None):             # <<<<<<<<<<<<<<
@@ -5766,24 +5887,20 @@ static int __pyx_pw_5_cdec_5TRule_1__init__(PyObject *__pyx_v_self, PyObject *__
       kw_args = PyDict_Size(__pyx_kwds);
       switch (pos_args) {
         case  0:
-        values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__lhs);
-        if (likely(values[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:
-        values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__f);
-        if (likely(values[1])) kw_args--;
+        if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__f)) != 0)) kw_args--;
         else {
           __Pyx_RaiseArgtupleInvalid("__init__", 0, 4, 5, 1); {__pyx_filename = __pyx_f[2]; __pyx_lineno = 53; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  2:
-        values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__e);
-        if (likely(values[2])) kw_args--;
+        if (likely((values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__e)) != 0)) kw_args--;
         else {
           __Pyx_RaiseArgtupleInvalid("__init__", 0, 4, 5, 2); {__pyx_filename = __pyx_f[2]; __pyx_lineno = 53; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  3:
-        values[3] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__scores);
-        if (likely(values[3])) kw_args--;
+        if (likely((values[3] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__scores)) != 0)) kw_args--;
         else {
           __Pyx_RaiseArgtupleInvalid("__init__", 0, 4, 5, 3); {__pyx_filename = __pyx_f[2]; __pyx_lineno = 53; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
@@ -5829,22 +5946,24 @@ static int __pyx_pw_5_cdec_5TRule_1__init__(PyObject *__pyx_v_self, PyObject *__
 static int __pyx_pf_5_cdec_5TRule___init__(struct __pyx_obj_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) {
   int __pyx_r;
   __Pyx_RefNannyDeclarations
-  int __pyx_t_1;
+  TRule *__pyx_t_1;
+  int __pyx_t_2;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__init__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":54
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":54
  * 
  *     def __init__(self, lhs, f, e, scores, a=None):
  *         self.rule = new shared_ptr[grammar.TRule](new grammar.TRule())             # <<<<<<<<<<<<<<
  *         self.lhs = lhs
  *         self.e = e
  */
-  __pyx_v_self->rule = new boost::shared_ptr<TRule>(new TRule());
+  try {__pyx_t_1 = new TRule();} catch(...) {__Pyx_CppExn2PyErr(); {__pyx_filename = __pyx_f[2]; __pyx_lineno = 54; __pyx_clineno = __LINE__; goto __pyx_L1_error;}}
+  __pyx_v_self->rule = new boost::shared_ptr<TRule>(__pyx_t_1);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":55
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":55
  *     def __init__(self, lhs, f, e, scores, a=None):
  *         self.rule = new shared_ptr[grammar.TRule](new grammar.TRule())
  *         self.lhs = lhs             # <<<<<<<<<<<<<<
@@ -5853,7 +5972,7 @@ static int __pyx_pf_5_cdec_5TRule___init__(struct __pyx_obj_5_cdec_TRule *__pyx_
  */
   if (PyObject_SetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__lhs, __pyx_v_lhs) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 55; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":56
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":56
  *         self.rule = new shared_ptr[grammar.TRule](new grammar.TRule())
  *         self.lhs = lhs
  *         self.e = e             # <<<<<<<<<<<<<<
@@ -5862,7 +5981,7 @@ static int __pyx_pf_5_cdec_5TRule___init__(struct __pyx_obj_5_cdec_TRule *__pyx_
  */
   if (PyObject_SetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__e, __pyx_v_e) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 56; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":57
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":57
  *         self.lhs = lhs
  *         self.e = e
  *         self.f = f             # <<<<<<<<<<<<<<
@@ -5871,7 +5990,7 @@ static int __pyx_pf_5_cdec_5TRule___init__(struct __pyx_obj_5_cdec_TRule *__pyx_
  */
   if (PyObject_SetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__f, __pyx_v_f) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 57; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":58
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":58
  *         self.e = e
  *         self.f = f
  *         self.scores = scores             # <<<<<<<<<<<<<<
@@ -5880,17 +5999,17 @@ static int __pyx_pf_5_cdec_5TRule___init__(struct __pyx_obj_5_cdec_TRule *__pyx_
  */
   if (PyObject_SetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__scores, __pyx_v_scores) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 58; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":59
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":59
  *         self.f = f
  *         self.scores = scores
  *         if a:             # <<<<<<<<<<<<<<
  *             self.a = a
  *         self.rule.get().ComputeArity()
  */
-  __pyx_t_1 = __Pyx_PyObject_IsTrue(__pyx_v_a); if (unlikely(__pyx_t_1 < 0)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 59; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__pyx_t_1) {
+  __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_v_a); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 59; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__pyx_t_2) {
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":60
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":60
  *         self.scores = scores
  *         if a:
  *             self.a = a             # <<<<<<<<<<<<<<
@@ -5902,7 +6021,7 @@ static int __pyx_pf_5_cdec_5TRule___init__(struct __pyx_obj_5_cdec_TRule *__pyx_
   }
   __pyx_L3:;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":61
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":61
  *         if a:
  *             self.a = a
  *         self.rule.get().ComputeArity()             # <<<<<<<<<<<<<<
@@ -5930,7 +6049,7 @@ static void __pyx_pw_5_cdec_5TRule_3__dealloc__(PyObject *__pyx_v_self) {
   __Pyx_RefNannyFinishContext();
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":63
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":63
  *         self.rule.get().ComputeArity()
  * 
  *     def __dealloc__(self):             # <<<<<<<<<<<<<<
@@ -5942,7 +6061,7 @@ static void __pyx_pf_5_cdec_5TRule_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_5
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__dealloc__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":64
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":64
  * 
  *     def __dealloc__(self):
  *         del self.rule             # <<<<<<<<<<<<<<
@@ -5965,7 +6084,7 @@ static PyObject *__pyx_pw_5_cdec_5TRule_5arity_1__get__(PyObject *__pyx_v_self)
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":67
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":67
  * 
  *     property arity:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -5982,7 +6101,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_5arity___get__(struct __pyx_obj_5_cdec_T
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__get__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":68
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":68
  *     property arity:
  *         def __get__(self):
  *             return self.rule.get().arity_             # <<<<<<<<<<<<<<
@@ -6019,7 +6138,7 @@ static PyObject *__pyx_pw_5_cdec_5TRule_1f_1__get__(PyObject *__pyx_v_self) {
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":71
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":71
  * 
  *     property f:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -6046,7 +6165,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1f___get__(struct __pyx_obj_5_cdec_TRule
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__get__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":72
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":72
  *     property f:
  *         def __get__(self):
  *             cdef vector[WordID]* f_ = &self.rule.get().f_             # <<<<<<<<<<<<<<
@@ -6055,7 +6174,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1f___get__(struct __pyx_obj_5_cdec_TRule
  */
   __pyx_v_f_ = (&__pyx_v_self->rule->get()->f_);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":74
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":74
  *             cdef vector[WordID]* f_ = &self.rule.get().f_
  *             cdef WordID w
  *             cdef f = []             # <<<<<<<<<<<<<<
@@ -6067,7 +6186,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1f___get__(struct __pyx_obj_5_cdec_TRule
   __pyx_v_f = ((PyObject *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":76
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":76
  *             cdef f = []
  *             cdef unsigned i
  *             cdef int idx = 0             # <<<<<<<<<<<<<<
@@ -6076,7 +6195,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1f___get__(struct __pyx_obj_5_cdec_TRule
  */
   __pyx_v_idx = 0;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":77
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":77
  *             cdef unsigned i
  *             cdef int idx = 0
  *             for i in range(f_.size()):             # <<<<<<<<<<<<<<
@@ -6087,7 +6206,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1f___get__(struct __pyx_obj_5_cdec_TRule
   for (__pyx_t_3 = 0; __pyx_t_3 < __pyx_t_2; __pyx_t_3+=1) {
     __pyx_v_i = __pyx_t_3;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":78
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":78
  *             cdef int idx = 0
  *             for i in range(f_.size()):
  *                 w = f_[0][i]             # <<<<<<<<<<<<<<
@@ -6096,7 +6215,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1f___get__(struct __pyx_obj_5_cdec_TRule
  */
     __pyx_v_w = ((__pyx_v_f_[0])[__pyx_v_i]);
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":79
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":79
  *             for i in range(f_.size()):
  *                 w = f_[0][i]
  *                 if w < 0:             # <<<<<<<<<<<<<<
@@ -6106,7 +6225,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1f___get__(struct __pyx_obj_5_cdec_TRule
     __pyx_t_4 = (__pyx_v_w < 0);
     if (__pyx_t_4) {
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":80
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":80
  *                 w = f_[0][i]
  *                 if w < 0:
  *                     idx += 1             # <<<<<<<<<<<<<<
@@ -6115,7 +6234,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1f___get__(struct __pyx_obj_5_cdec_TRule
  */
       __pyx_v_idx = (__pyx_v_idx + 1);
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":81
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":81
  *                 if w < 0:
  *                     idx += 1
  *                     f.append(NT(TDConvert(-w), idx))             # <<<<<<<<<<<<<<
@@ -6145,7 +6264,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1f___get__(struct __pyx_obj_5_cdec_TRule
     }
     /*else*/ {
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":83
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":83
  *                     f.append(NT(TDConvert(-w), idx))
  *                 else:
  *                     f.append(unicode(TDConvert(w), encoding='utf8'))             # <<<<<<<<<<<<<<
@@ -6174,7 +6293,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1f___get__(struct __pyx_obj_5_cdec_TRule
     __pyx_L5:;
   }
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":84
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":84
  *                 else:
  *                     f.append(unicode(TDConvert(w), encoding='utf8'))
  *             return f             # <<<<<<<<<<<<<<
@@ -6212,7 +6331,7 @@ static int __pyx_pw_5_cdec_5TRule_1f_3__set__(PyObject *__pyx_v_self, PyObject *
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":86
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":86
  *             return f
  * 
  *         def __set__(self, f):             # <<<<<<<<<<<<<<
@@ -6237,7 +6356,7 @@ static int __pyx_pf_5_cdec_5TRule_1f_2__set__(struct __pyx_obj_5_cdec_TRule *__p
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__set__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":87
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":87
  * 
  *         def __set__(self, f):
  *             cdef vector[WordID]* f_ = &self.rule.get().f_             # <<<<<<<<<<<<<<
@@ -6246,7 +6365,7 @@ static int __pyx_pf_5_cdec_5TRule_1f_2__set__(struct __pyx_obj_5_cdec_TRule *__p
  */
   __pyx_v_f_ = (&__pyx_v_self->rule->get()->f_);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":88
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":88
  *         def __set__(self, f):
  *             cdef vector[WordID]* f_ = &self.rule.get().f_
  *             f_.resize(len(f))             # <<<<<<<<<<<<<<
@@ -6256,7 +6375,7 @@ static int __pyx_pf_5_cdec_5TRule_1f_2__set__(struct __pyx_obj_5_cdec_TRule *__p
   __pyx_t_1 = PyObject_Length(__pyx_v_f); if (unlikely(__pyx_t_1 == -1)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 88; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_f_->resize(__pyx_t_1);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":90
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":90
  *             f_.resize(len(f))
  *             cdef unsigned i
  *             cdef int idx = 0             # <<<<<<<<<<<<<<
@@ -6265,7 +6384,7 @@ static int __pyx_pf_5_cdec_5TRule_1f_2__set__(struct __pyx_obj_5_cdec_TRule *__p
  */
   __pyx_v_idx = 0;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":91
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":91
  *             cdef unsigned i
  *             cdef int idx = 0
  *             for i in range(len(f)):             # <<<<<<<<<<<<<<
@@ -6276,7 +6395,7 @@ static int __pyx_pf_5_cdec_5TRule_1f_2__set__(struct __pyx_obj_5_cdec_TRule *__p
   for (__pyx_t_2 = 0; __pyx_t_2 < __pyx_t_1; __pyx_t_2+=1) {
     __pyx_v_i = __pyx_t_2;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":92
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":92
  *             cdef int idx = 0
  *             for i in range(len(f)):
  *                 if isinstance(f[i], NT):             # <<<<<<<<<<<<<<
@@ -6292,7 +6411,7 @@ static int __pyx_pf_5_cdec_5TRule_1f_2__set__(struct __pyx_obj_5_cdec_TRule *__p
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
     if (__pyx_t_5) {
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":93
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":93
  *             for i in range(len(f)):
  *                 if isinstance(f[i], NT):
  *                     f_[0][i] = -TDConvert(<char *>f[i].cat)             # <<<<<<<<<<<<<<
@@ -6311,7 +6430,7 @@ static int __pyx_pf_5_cdec_5TRule_1f_2__set__(struct __pyx_obj_5_cdec_TRule *__p
     }
     /*else*/ {
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":95
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":95
  *                     f_[0][i] = -TDConvert(<char *>f[i].cat)
  *                 else:
  *                     f_[0][i] = TDConvert(<char *>as_str(f[i]))             # <<<<<<<<<<<<<<
@@ -6349,7 +6468,7 @@ static PyObject *__pyx_pw_5_cdec_5TRule_1e_1__get__(PyObject *__pyx_v_self) {
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":98
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":98
  * 
  *     property e:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -6376,7 +6495,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1e___get__(struct __pyx_obj_5_cdec_TRule
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__get__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":99
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":99
  *     property e:
  *         def __get__(self):
  *             cdef vector[WordID]* e_ = &self.rule.get().e_             # <<<<<<<<<<<<<<
@@ -6385,7 +6504,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1e___get__(struct __pyx_obj_5_cdec_TRule
  */
   __pyx_v_e_ = (&__pyx_v_self->rule->get()->e_);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":101
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":101
  *             cdef vector[WordID]* e_ = &self.rule.get().e_
  *             cdef WordID w
  *             cdef e = []             # <<<<<<<<<<<<<<
@@ -6397,7 +6516,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1e___get__(struct __pyx_obj_5_cdec_TRule
   __pyx_v_e = ((PyObject *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":103
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":103
  *             cdef e = []
  *             cdef unsigned i
  *             cdef int idx = 0             # <<<<<<<<<<<<<<
@@ -6406,7 +6525,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1e___get__(struct __pyx_obj_5_cdec_TRule
  */
   __pyx_v_idx = 0;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":104
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":104
  *             cdef unsigned i
  *             cdef int idx = 0
  *             for i in range(e_.size()):             # <<<<<<<<<<<<<<
@@ -6417,7 +6536,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1e___get__(struct __pyx_obj_5_cdec_TRule
   for (__pyx_t_3 = 0; __pyx_t_3 < __pyx_t_2; __pyx_t_3+=1) {
     __pyx_v_i = __pyx_t_3;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":105
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":105
  *             cdef int idx = 0
  *             for i in range(e_.size()):
  *                 w = e_[0][i]             # <<<<<<<<<<<<<<
@@ -6426,7 +6545,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1e___get__(struct __pyx_obj_5_cdec_TRule
  */
     __pyx_v_w = ((__pyx_v_e_[0])[__pyx_v_i]);
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":106
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":106
  *             for i in range(e_.size()):
  *                 w = e_[0][i]
  *                 if w < 1:             # <<<<<<<<<<<<<<
@@ -6436,7 +6555,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1e___get__(struct __pyx_obj_5_cdec_TRule
     __pyx_t_4 = (__pyx_v_w < 1);
     if (__pyx_t_4) {
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":107
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":107
  *                 w = e_[0][i]
  *                 if w < 1:
  *                     idx += 1             # <<<<<<<<<<<<<<
@@ -6445,7 +6564,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1e___get__(struct __pyx_obj_5_cdec_TRule
  */
       __pyx_v_idx = (__pyx_v_idx + 1);
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":108
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":108
  *                 if w < 1:
  *                     idx += 1
  *                     e.append(NTRef(1-w))             # <<<<<<<<<<<<<<
@@ -6470,7 +6589,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1e___get__(struct __pyx_obj_5_cdec_TRule
     }
     /*else*/ {
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":110
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":110
  *                     e.append(NTRef(1-w))
  *                 else:
  *                     e.append(unicode(TDConvert(w), encoding='utf8'))             # <<<<<<<<<<<<<<
@@ -6499,7 +6618,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_1e___get__(struct __pyx_obj_5_cdec_TRule
     __pyx_L5:;
   }
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":111
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":111
  *                 else:
  *                     e.append(unicode(TDConvert(w), encoding='utf8'))
  *             return e             # <<<<<<<<<<<<<<
@@ -6537,7 +6656,7 @@ static int __pyx_pw_5_cdec_5TRule_1e_3__set__(PyObject *__pyx_v_self, PyObject *
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":113
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":113
  *             return e
  * 
  *         def __set__(self, e):             # <<<<<<<<<<<<<<
@@ -6561,7 +6680,7 @@ static int __pyx_pf_5_cdec_5TRule_1e_2__set__(struct __pyx_obj_5_cdec_TRule *__p
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__set__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":114
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":114
  * 
  *         def __set__(self, e):
  *             cdef vector[WordID]* e_ = &self.rule.get().e_             # <<<<<<<<<<<<<<
@@ -6570,7 +6689,7 @@ static int __pyx_pf_5_cdec_5TRule_1e_2__set__(struct __pyx_obj_5_cdec_TRule *__p
  */
   __pyx_v_e_ = (&__pyx_v_self->rule->get()->e_);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":115
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":115
  *         def __set__(self, e):
  *             cdef vector[WordID]* e_ = &self.rule.get().e_
  *             e_.resize(len(e))             # <<<<<<<<<<<<<<
@@ -6580,7 +6699,7 @@ static int __pyx_pf_5_cdec_5TRule_1e_2__set__(struct __pyx_obj_5_cdec_TRule *__p
   __pyx_t_1 = PyObject_Length(__pyx_v_e); if (unlikely(__pyx_t_1 == -1)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_e_->resize(__pyx_t_1);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":117
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":117
  *             e_.resize(len(e))
  *             cdef unsigned i
  *             for i in range(len(e)):             # <<<<<<<<<<<<<<
@@ -6591,7 +6710,7 @@ static int __pyx_pf_5_cdec_5TRule_1e_2__set__(struct __pyx_obj_5_cdec_TRule *__p
   for (__pyx_t_2 = 0; __pyx_t_2 < __pyx_t_1; __pyx_t_2+=1) {
     __pyx_v_i = __pyx_t_2;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":118
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":118
  *             cdef unsigned i
  *             for i in range(len(e)):
  *                 if isinstance(e[i], NTRef):             # <<<<<<<<<<<<<<
@@ -6607,7 +6726,7 @@ static int __pyx_pf_5_cdec_5TRule_1e_2__set__(struct __pyx_obj_5_cdec_TRule *__p
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
     if (__pyx_t_5) {
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":119
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":119
  *             for i in range(len(e)):
  *                 if isinstance(e[i], NTRef):
  *                     e_[0][i] = 1-e[i].ref             # <<<<<<<<<<<<<<
@@ -6629,7 +6748,7 @@ static int __pyx_pf_5_cdec_5TRule_1e_2__set__(struct __pyx_obj_5_cdec_TRule *__p
     }
     /*else*/ {
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":121
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":121
  *                     e_[0][i] = 1-e[i].ref
  *                 else:
  *                     e_[0][i] = TDConvert(<char *>as_str(e[i]))             # <<<<<<<<<<<<<<
@@ -6668,7 +6787,7 @@ static PyObject *__pyx_pw_5_cdec_5TRule_1a_1__get__(PyObject *__pyx_v_self) {
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":124
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":124
  * 
  *     property a:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -6733,7 +6852,7 @@ static PyObject *__pyx_gb_5_cdec_5TRule_1a_2generator2(__pyx_GeneratorObject *__
   __pyx_L3_first_run:;
   if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":126
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":126
  *         def __get__(self):
  *             cdef unsigned i
  *             cdef vector[grammar.AlignmentPoint]* a = &self.rule.get().a_             # <<<<<<<<<<<<<<
@@ -6742,7 +6861,7 @@ static PyObject *__pyx_gb_5_cdec_5TRule_1a_2generator2(__pyx_GeneratorObject *__
  */
   __pyx_cur_scope->__pyx_v_a = (&__pyx_cur_scope->__pyx_v_self->rule->get()->a_);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":127
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":127
  *             cdef unsigned i
  *             cdef vector[grammar.AlignmentPoint]* a = &self.rule.get().a_
  *             for i in range(a.size()):             # <<<<<<<<<<<<<<
@@ -6753,7 +6872,7 @@ static PyObject *__pyx_gb_5_cdec_5TRule_1a_2generator2(__pyx_GeneratorObject *__
   for (__pyx_t_2 = 0; __pyx_t_2 < __pyx_t_1; __pyx_t_2+=1) {
     __pyx_cur_scope->__pyx_v_i = __pyx_t_2;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":128
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":128
  *             cdef vector[grammar.AlignmentPoint]* a = &self.rule.get().a_
  *             for i in range(a.size()):
  *                 yield (a[0][i].s_, a[0][i].t_)             # <<<<<<<<<<<<<<
@@ -6796,6 +6915,7 @@ static PyObject *__pyx_gb_5_cdec_5TRule_1a_2generator2(__pyx_GeneratorObject *__
   __pyx_L0:;
   __Pyx_XDECREF(__pyx_r);
   __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
   __Pyx_RefNannyFinishContext();
   return NULL;
 }
@@ -6811,7 +6931,7 @@ static int __pyx_pw_5_cdec_5TRule_1a_4__set__(PyObject *__pyx_v_self, PyObject *
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":130
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":130
  *                 yield (a[0][i].s_, a[0][i].t_)
  * 
  *         def __set__(self, a):             # <<<<<<<<<<<<<<
@@ -6840,7 +6960,7 @@ static int __pyx_pf_5_cdec_5TRule_1a_3__set__(struct __pyx_obj_5_cdec_TRule *__p
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__set__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":131
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":131
  * 
  *         def __set__(self, a):
  *             cdef vector[grammar.AlignmentPoint]* a_ = &self.rule.get().a_             # <<<<<<<<<<<<<<
@@ -6849,7 +6969,7 @@ static int __pyx_pf_5_cdec_5TRule_1a_3__set__(struct __pyx_obj_5_cdec_TRule *__p
  */
   __pyx_v_a_ = (&__pyx_v_self->rule->get()->a_);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":132
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":132
  *         def __set__(self, a):
  *             cdef vector[grammar.AlignmentPoint]* a_ = &self.rule.get().a_
  *             a_.resize(len(a))             # <<<<<<<<<<<<<<
@@ -6859,7 +6979,7 @@ static int __pyx_pf_5_cdec_5TRule_1a_3__set__(struct __pyx_obj_5_cdec_TRule *__p
   __pyx_t_1 = PyObject_Length(__pyx_v_a); if (unlikely(__pyx_t_1 == -1)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_a_->resize(__pyx_t_1);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":135
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":135
  *             cdef unsigned i
  *             cdef int s, t
  *             for i in range(len(a)):             # <<<<<<<<<<<<<<
@@ -6870,7 +6990,7 @@ static int __pyx_pf_5_cdec_5TRule_1a_3__set__(struct __pyx_obj_5_cdec_TRule *__p
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     __pyx_v_i = __pyx_t_2;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":136
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":136
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  *             for i in range(len(a)):
  *                 s, t = a[i]             # <<<<<<<<<<<<<<
@@ -6881,27 +7001,33 @@ static int __pyx_pf_5_cdec_5TRule_1a_3__set__(struct __pyx_obj_5_cdec_TRule *__p
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     if ((likely(PyTuple_CheckExact(__pyx_t_3))) || (PyList_CheckExact(__pyx_t_3))) {
       PyObject* sequence = __pyx_t_3;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      Py_ssize_t size = Py_SIZE(sequence);
+      #else
+      Py_ssize_t size = PySequence_Size(sequence);
+      #endif
+      if (unlikely(size != 2)) {
+        if (size > 2) __Pyx_RaiseTooManyValuesError(2);
+        else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
+        {__pyx_filename = __pyx_f[2]; __pyx_lineno = 136; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      }
+      #if CYTHON_COMPILING_IN_CPYTHON
       if (likely(PyTuple_CheckExact(sequence))) {
-        if (unlikely(PyTuple_GET_SIZE(sequence) != 2)) {
-          if (PyTuple_GET_SIZE(sequence) > 2) __Pyx_RaiseTooManyValuesError(2);
-          else __Pyx_RaiseNeedMoreValuesError(PyTuple_GET_SIZE(sequence));
-          {__pyx_filename = __pyx_f[2]; __pyx_lineno = 136; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-        }
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         __pyx_t_5 = PyTuple_GET_ITEM(sequence, 1); 
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-        if (unlikely(PyList_GET_SIZE(sequence) != 2)) {
-          if (PyList_GET_SIZE(sequence) > 2) __Pyx_RaiseTooManyValuesError(2);
-          else __Pyx_RaiseNeedMoreValuesError(PyList_GET_SIZE(sequence));
-          {__pyx_filename = __pyx_f[2]; __pyx_lineno = 136; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-        }
         __pyx_t_4 = PyList_GET_ITEM(sequence, 0); 
         __pyx_t_5 = PyList_GET_ITEM(sequence, 1); 
       }
       __Pyx_INCREF(__pyx_t_4);
       __Pyx_INCREF(__pyx_t_5);
+      #else
+      __pyx_t_4 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 136; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 136; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
       __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-    } else {
+    } else
+    {
       Py_ssize_t index = -1;
       __pyx_t_6 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 136; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -6912,12 +7038,13 @@ static int __pyx_pf_5_cdec_5TRule_1a_3__set__(struct __pyx_obj_5_cdec_TRule *__p
       index = 1; __pyx_t_5 = __pyx_t_7(__pyx_t_6); if (unlikely(!__pyx_t_5)) goto __pyx_L5_unpacking_failed;
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       if (__Pyx_IternextUnpackEndCheck(__pyx_t_7(__pyx_t_6), 2) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 136; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = NULL;
       __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
       goto __pyx_L6_unpacking_done;
       __pyx_L5_unpacking_failed:;
       __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
-      if (PyErr_Occurred() && PyErr_ExceptionMatches(PyExc_StopIteration)) PyErr_Clear();
-      if (!PyErr_Occurred()) __Pyx_RaiseNeedMoreValuesError(index);
+      __pyx_t_7 = NULL;
+      if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
       {__pyx_filename = __pyx_f[2]; __pyx_lineno = 136; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __pyx_L6_unpacking_done:;
     }
@@ -6928,7 +7055,7 @@ static int __pyx_pf_5_cdec_5TRule_1a_3__set__(struct __pyx_obj_5_cdec_TRule *__p
     __pyx_v_s = __pyx_t_8;
     __pyx_v_t = __pyx_t_9;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":137
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":137
  *             for i in range(len(a)):
  *                 s, t = a[i]
  *                 a_[0][i] = grammar.AlignmentPoint(s, t)             # <<<<<<<<<<<<<<
@@ -6963,7 +7090,7 @@ static PyObject *__pyx_pw_5_cdec_5TRule_6scores_1__get__(PyObject *__pyx_v_self)
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":140
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":140
  * 
  *     property scores:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -6981,7 +7108,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_6scores___get__(struct __pyx_obj_5_cdec_
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__get__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":141
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":141
  *     property scores:
  *         def __get__(self):
  *             cdef SparseVector scores = SparseVector.__new__(SparseVector)             # <<<<<<<<<<<<<<
@@ -6994,7 +7121,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_6scores___get__(struct __pyx_obj_5_cdec_
   __pyx_v_scores = ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":142
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":142
  *         def __get__(self):
  *             cdef SparseVector scores = SparseVector.__new__(SparseVector)
  *             scores.vector = new FastSparseVector[double](self.rule.get().scores_)             # <<<<<<<<<<<<<<
@@ -7003,7 +7130,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_6scores___get__(struct __pyx_obj_5_cdec_
  */
   __pyx_v_scores->vector = new FastSparseVector<double>(__pyx_v_self->rule->get()->scores_);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":143
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":143
  *             cdef SparseVector scores = SparseVector.__new__(SparseVector)
  *             scores.vector = new FastSparseVector[double](self.rule.get().scores_)
  *             return scores             # <<<<<<<<<<<<<<
@@ -7039,7 +7166,7 @@ static int __pyx_pw_5_cdec_5TRule_6scores_3__set__(PyObject *__pyx_v_self, PyObj
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":145
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":145
  *             return scores
  * 
  *         def __set__(self, scores):             # <<<<<<<<<<<<<<
@@ -7069,7 +7196,7 @@ static int __pyx_pf_5_cdec_5TRule_6scores_2__set__(struct __pyx_obj_5_cdec_TRule
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__set__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":146
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":146
  * 
  *         def __set__(self, scores):
  *             cdef FastSparseVector[double]* scores_ = &self.rule.get().scores_             # <<<<<<<<<<<<<<
@@ -7078,7 +7205,7 @@ static int __pyx_pf_5_cdec_5TRule_6scores_2__set__(struct __pyx_obj_5_cdec_TRule
  */
   __pyx_v_scores_ = (&__pyx_v_self->rule->get()->scores_);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":147
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":147
  *         def __set__(self, scores):
  *             cdef FastSparseVector[double]* scores_ = &self.rule.get().scores_
  *             scores_.clear()             # <<<<<<<<<<<<<<
@@ -7087,7 +7214,7 @@ static int __pyx_pf_5_cdec_5TRule_6scores_2__set__(struct __pyx_obj_5_cdec_TRule
  */
   __pyx_v_scores_->clear();
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":150
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":150
  *             cdef int fid
  *             cdef float fval
  *             for fname, fval in scores.items():             # <<<<<<<<<<<<<<
@@ -7111,10 +7238,18 @@ static int __pyx_pf_5_cdec_5TRule_6scores_2__set__(struct __pyx_obj_5_cdec_TRule
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     if (!__pyx_t_4 && PyList_CheckExact(__pyx_t_1)) {
       if (__pyx_t_3 >= PyList_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_2 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_3); __Pyx_INCREF(__pyx_t_2); __pyx_t_3++;
+      #else
+      __pyx_t_2 = PySequence_ITEM(__pyx_t_1, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 150; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else if (!__pyx_t_4 && PyTuple_CheckExact(__pyx_t_1)) {
       if (__pyx_t_3 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_2 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_3); __Pyx_INCREF(__pyx_t_2); __pyx_t_3++;
+      #else
+      __pyx_t_2 = PySequence_ITEM(__pyx_t_1, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 150; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else {
       __pyx_t_2 = __pyx_t_4(__pyx_t_1);
       if (unlikely(!__pyx_t_2)) {
@@ -7128,27 +7263,33 @@ static int __pyx_pf_5_cdec_5TRule_6scores_2__set__(struct __pyx_obj_5_cdec_TRule
     }
     if ((likely(PyTuple_CheckExact(__pyx_t_2))) || (PyList_CheckExact(__pyx_t_2))) {
       PyObject* sequence = __pyx_t_2;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      Py_ssize_t size = Py_SIZE(sequence);
+      #else
+      Py_ssize_t size = PySequence_Size(sequence);
+      #endif
+      if (unlikely(size != 2)) {
+        if (size > 2) __Pyx_RaiseTooManyValuesError(2);
+        else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
+        {__pyx_filename = __pyx_f[2]; __pyx_lineno = 150; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      }
+      #if CYTHON_COMPILING_IN_CPYTHON
       if (likely(PyTuple_CheckExact(sequence))) {
-        if (unlikely(PyTuple_GET_SIZE(sequence) != 2)) {
-          if (PyTuple_GET_SIZE(sequence) > 2) __Pyx_RaiseTooManyValuesError(2);
-          else __Pyx_RaiseNeedMoreValuesError(PyTuple_GET_SIZE(sequence));
-          {__pyx_filename = __pyx_f[2]; __pyx_lineno = 150; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-        }
         __pyx_t_5 = PyTuple_GET_ITEM(sequence, 0); 
         __pyx_t_6 = PyTuple_GET_ITEM(sequence, 1); 
       } else {
-        if (unlikely(PyList_GET_SIZE(sequence) != 2)) {
-          if (PyList_GET_SIZE(sequence) > 2) __Pyx_RaiseTooManyValuesError(2);
-          else __Pyx_RaiseNeedMoreValuesError(PyList_GET_SIZE(sequence));
-          {__pyx_filename = __pyx_f[2]; __pyx_lineno = 150; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-        }
         __pyx_t_5 = PyList_GET_ITEM(sequence, 0); 
         __pyx_t_6 = PyList_GET_ITEM(sequence, 1); 
       }
       __Pyx_INCREF(__pyx_t_5);
       __Pyx_INCREF(__pyx_t_6);
+      #else
+      __pyx_t_5 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 150; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 150; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-    } else {
+    } else
+    {
       Py_ssize_t index = -1;
       __pyx_t_7 = PyObject_GetIter(__pyx_t_2); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 150; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_7);
@@ -7159,12 +7300,13 @@ static int __pyx_pf_5_cdec_5TRule_6scores_2__set__(struct __pyx_obj_5_cdec_TRule
       index = 1; __pyx_t_6 = __pyx_t_8(__pyx_t_7); if (unlikely(!__pyx_t_6)) goto __pyx_L5_unpacking_failed;
       __Pyx_GOTREF(__pyx_t_6);
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+      __pyx_t_8 = NULL;
       __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
       goto __pyx_L6_unpacking_done;
       __pyx_L5_unpacking_failed:;
       __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
-      if (PyErr_Occurred() && PyErr_ExceptionMatches(PyExc_StopIteration)) PyErr_Clear();
-      if (!PyErr_Occurred()) __Pyx_RaiseNeedMoreValuesError(index);
+      __pyx_t_8 = NULL;
+      if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
       {__pyx_filename = __pyx_f[2]; __pyx_lineno = 150; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __pyx_L6_unpacking_done:;
     }
@@ -7175,7 +7317,7 @@ static int __pyx_pf_5_cdec_5TRule_6scores_2__set__(struct __pyx_obj_5_cdec_TRule
     __pyx_t_5 = 0;
     __pyx_v_fval = __pyx_t_9;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":151
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":151
  *             cdef float fval
  *             for fname, fval in scores.items():
  *                 fid = FDConvert(<char *>as_str(fname))             # <<<<<<<<<<<<<<
@@ -7184,7 +7326,7 @@ static int __pyx_pf_5_cdec_5TRule_6scores_2__set__(struct __pyx_obj_5_cdec_TRule
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     __pyx_v_fid = FD::Convert(((char *)__pyx_f_5_cdec_as_str(__pyx_v_fname, NULL)));
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":152
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":152
  *             for fname, fval in scores.items():
  *                 fid = FDConvert(<char *>as_str(fname))
  *                 if fid < 0: raise KeyError(fname)             # <<<<<<<<<<<<<<
@@ -7208,7 +7350,7 @@ static int __pyx_pf_5_cdec_5TRule_6scores_2__set__(struct __pyx_obj_5_cdec_TRule
     }
     __pyx_L7:;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":153
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":153
  *                 fid = FDConvert(<char *>as_str(fname))
  *                 if fid < 0: raise KeyError(fname)
  *                 scores_.set_value(fid, fval)             # <<<<<<<<<<<<<<
@@ -7246,7 +7388,7 @@ static PyObject *__pyx_pw_5_cdec_5TRule_3lhs_1__get__(PyObject *__pyx_v_self) {
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":156
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":156
  * 
  *     property lhs:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -7264,7 +7406,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_3lhs___get__(struct __pyx_obj_5_cdec_TRu
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__get__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":157
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":157
  *     property lhs:
  *         def __get__(self):
  *             return NT(TDConvert(-self.rule.get().lhs_))             # <<<<<<<<<<<<<<
@@ -7310,7 +7452,7 @@ static int __pyx_pw_5_cdec_5TRule_3lhs_3__set__(PyObject *__pyx_v_self, PyObject
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":159
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":159
  *             return NT(TDConvert(-self.rule.get().lhs_))
  * 
  *         def __set__(self, lhs):             # <<<<<<<<<<<<<<
@@ -7332,7 +7474,7 @@ static int __pyx_pf_5_cdec_5TRule_3lhs_2__set__(struct __pyx_obj_5_cdec_TRule *_
   __Pyx_RefNannySetupContext("__set__", 0);
   __Pyx_INCREF(__pyx_v_lhs);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":160
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":160
  * 
  *         def __set__(self, lhs):
  *             if not isinstance(lhs, NT):             # <<<<<<<<<<<<<<
@@ -7346,7 +7488,7 @@ static int __pyx_pf_5_cdec_5TRule_3lhs_2__set__(struct __pyx_obj_5_cdec_TRule *_
   __pyx_t_3 = (!__pyx_t_2);
   if (__pyx_t_3) {
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":161
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":161
  *         def __set__(self, lhs):
  *             if not isinstance(lhs, NT):
  *                 lhs = NT(lhs)             # <<<<<<<<<<<<<<
@@ -7368,7 +7510,7 @@ static int __pyx_pf_5_cdec_5TRule_3lhs_2__set__(struct __pyx_obj_5_cdec_TRule *_
   }
   __pyx_L3:;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":162
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":162
  *             if not isinstance(lhs, NT):
  *                 lhs = NT(lhs)
  *             self.rule.get().lhs_ = -TDConvert(<char *>lhs.cat)             # <<<<<<<<<<<<<<
@@ -7406,7 +7548,7 @@ static PyObject *__pyx_pw_5_cdec_5TRule_5__str__(PyObject *__pyx_v_self) {
 }
 static PyObject *__pyx_gb_5_cdec_5TRule_7__str___2generator19(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":165
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":165
  * 
  *     def __str__(self):
  *         scores = ' '.join('%s=%s' % feat for feat in self.scores)             # <<<<<<<<<<<<<<
@@ -7484,10 +7626,18 @@ static PyObject *__pyx_gb_5_cdec_5TRule_7__str___2generator19(__pyx_GeneratorObj
   for (;;) {
     if (!__pyx_t_4 && PyList_CheckExact(__pyx_t_2)) {
       if (__pyx_t_3 >= PyList_GET_SIZE(__pyx_t_2)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_1 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_3); __Pyx_INCREF(__pyx_t_1); __pyx_t_3++;
+      #else
+      __pyx_t_1 = PySequence_ITEM(__pyx_t_2, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 165; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else if (!__pyx_t_4 && PyTuple_CheckExact(__pyx_t_2)) {
       if (__pyx_t_3 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_1 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_3); __Pyx_INCREF(__pyx_t_1); __pyx_t_3++;
+      #else
+      __pyx_t_1 = PySequence_ITEM(__pyx_t_2, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 165; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else {
       __pyx_t_1 = __pyx_t_4(__pyx_t_2);
       if (unlikely(!__pyx_t_1)) {
@@ -7535,11 +7685,12 @@ static PyObject *__pyx_gb_5_cdec_5TRule_7__str___2generator19(__pyx_GeneratorObj
   __pyx_L0:;
   __Pyx_XDECREF(__pyx_r);
   __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
   __Pyx_RefNannyFinishContext();
   return NULL;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":164
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":164
  *             self.rule.get().lhs_ = -TDConvert(<char *>lhs.cat)
  * 
  *     def __str__(self):             # <<<<<<<<<<<<<<
@@ -7571,7 +7722,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_4__str__(struct __pyx_obj_5_cdec_TRule *
   __Pyx_INCREF((PyObject *)__pyx_cur_scope->__pyx_v_self);
   __Pyx_GIVEREF((PyObject *)__pyx_cur_scope->__pyx_v_self);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":165
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":165
  * 
  *     def __str__(self):
  *         scores = ' '.join('%s=%s' % feat for feat in self.scores)             # <<<<<<<<<<<<<<
@@ -7594,7 +7745,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_4__str__(struct __pyx_obj_5_cdec_TRule *
   __pyx_v_scores = __pyx_t_2;
   __pyx_t_2 = 0;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":166
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":166
  *     def __str__(self):
  *         scores = ' '.join('%s=%s' % feat for feat in self.scores)
  *         return '%s ||| %s ||| %s ||| %s' % (self.lhs,             # <<<<<<<<<<<<<<
@@ -7605,7 +7756,7 @@ static PyObject *__pyx_pf_5_cdec_5TRule_4__str__(struct __pyx_obj_5_cdec_TRule *
   __pyx_t_2 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_self), __pyx_n_s__lhs); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 166; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":167
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":167
  *         scores = ' '.join('%s=%s' % feat for feat in self.scores)
  *         return '%s ||| %s ||| %s ||| %s' % (self.lhs,
  *                 _phrase(self.f), _phrase(self.e), scores)             # <<<<<<<<<<<<<<
@@ -7684,14 +7835,14 @@ static int __pyx_pw_5_cdec_5MRule_1__init__(PyObject *__pyx_v_self, PyObject *__
   PyObject *__pyx_v_rhs = 0;
   PyObject *__pyx_v_scores = 0;
   PyObject *__pyx_v_a = 0;
-  static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__lhs,&__pyx_n_s__rhs,&__pyx_n_s__scores,&__pyx_n_s__a,0};
   int __pyx_r;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__init__ (wrapper)", 0);
   {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__lhs,&__pyx_n_s__rhs,&__pyx_n_s__scores,&__pyx_n_s__a,0};
     PyObject* values[4] = {0,0,0,0};
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":170
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":170
  * 
  * cdef class MRule(TRule):
  *     def __init__(self, lhs, rhs, scores, a=None):             # <<<<<<<<<<<<<<
@@ -7713,18 +7864,15 @@ static int __pyx_pw_5_cdec_5MRule_1__init__(PyObject *__pyx_v_self, PyObject *__
       kw_args = PyDict_Size(__pyx_kwds);
       switch (pos_args) {
         case  0:
-        values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__lhs);
-        if (likely(values[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:
-        values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__rhs);
-        if (likely(values[1])) kw_args--;
+        if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__rhs)) != 0)) kw_args--;
         else {
           __Pyx_RaiseArgtupleInvalid("__init__", 0, 3, 4, 1); {__pyx_filename = __pyx_f[2]; __pyx_lineno = 170; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  2:
-        values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__scores);
-        if (likely(values[2])) kw_args--;
+        if (likely((values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__scores)) != 0)) kw_args--;
         else {
           __Pyx_RaiseArgtupleInvalid("__init__", 0, 3, 4, 2); {__pyx_filename = __pyx_f[2]; __pyx_lineno = 170; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
@@ -7783,7 +7931,7 @@ static int __pyx_pf_5_cdec_5MRule___init__(struct __pyx_obj_5_cdec_MRule *__pyx_
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__init__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":171
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":171
  * cdef class MRule(TRule):
  *     def __init__(self, lhs, rhs, scores, a=None):
  *         cdef unsigned i = 1             # <<<<<<<<<<<<<<
@@ -7792,7 +7940,7 @@ static int __pyx_pf_5_cdec_5MRule___init__(struct __pyx_obj_5_cdec_MRule *__pyx_
  */
   __pyx_v_i = 1;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":172
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":172
  *     def __init__(self, lhs, rhs, scores, a=None):
  *         cdef unsigned i = 1
  *         e = []             # <<<<<<<<<<<<<<
@@ -7804,7 +7952,7 @@ static int __pyx_pf_5_cdec_5MRule___init__(struct __pyx_obj_5_cdec_MRule *__pyx_
   __pyx_v_e = __pyx_t_1;
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":173
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":173
  *         cdef unsigned i = 1
  *         e = []
  *         for s in rhs:             # <<<<<<<<<<<<<<
@@ -7822,10 +7970,18 @@ static int __pyx_pf_5_cdec_5MRule___init__(struct __pyx_obj_5_cdec_MRule *__pyx_
   for (;;) {
     if (!__pyx_t_3 && PyList_CheckExact(__pyx_t_1)) {
       if (__pyx_t_2 >= PyList_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++;
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 173; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else if (!__pyx_t_3 && PyTuple_CheckExact(__pyx_t_1)) {
       if (__pyx_t_2 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++;
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 173; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else {
       __pyx_t_4 = __pyx_t_3(__pyx_t_1);
       if (unlikely(!__pyx_t_4)) {
@@ -7841,7 +7997,7 @@ static int __pyx_pf_5_cdec_5MRule___init__(struct __pyx_obj_5_cdec_MRule *__pyx_
     __pyx_v_s = __pyx_t_4;
     __pyx_t_4 = 0;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":174
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":174
  *         e = []
  *         for s in rhs:
  *             if isinstance(s, NT):             # <<<<<<<<<<<<<<
@@ -7854,7 +8010,7 @@ static int __pyx_pf_5_cdec_5MRule___init__(struct __pyx_obj_5_cdec_MRule *__pyx_
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
     if (__pyx_t_5) {
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":175
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":175
  *         for s in rhs:
  *             if isinstance(s, NT):
  *                 e.append(NTRef(i))             # <<<<<<<<<<<<<<
@@ -7874,7 +8030,7 @@ static int __pyx_pf_5_cdec_5MRule___init__(struct __pyx_obj_5_cdec_MRule *__pyx_
       __pyx_t_7 = PyList_Append(__pyx_v_e, __pyx_t_4); if (unlikely(__pyx_t_7 == -1)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 175; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":176
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":176
  *             if isinstance(s, NT):
  *                 e.append(NTRef(i))
  *                 i += 1             # <<<<<<<<<<<<<<
@@ -7886,7 +8042,7 @@ static int __pyx_pf_5_cdec_5MRule___init__(struct __pyx_obj_5_cdec_MRule *__pyx_
     }
     /*else*/ {
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":178
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":178
  *                 i += 1
  *             else:
  *                 e.append(s)             # <<<<<<<<<<<<<<
@@ -7899,7 +8055,7 @@ static int __pyx_pf_5_cdec_5MRule___init__(struct __pyx_obj_5_cdec_MRule *__pyx_
   }
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":179
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":179
  *             else:
  *                 e.append(s)
  *         super(MRule, self).__init__(lhs, rhs, e, scores, a)             # <<<<<<<<<<<<<<
@@ -7967,7 +8123,7 @@ static void __pyx_pw_5_cdec_7Grammar_1__dealloc__(PyObject *__pyx_v_self) {
   __Pyx_RefNannyFinishContext();
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":184
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":184
  *     cdef shared_ptr[grammar.Grammar]* grammar
  * 
  *     def __dealloc__(self):             # <<<<<<<<<<<<<<
@@ -7979,7 +8135,7 @@ static void __pyx_pf_5_cdec_7Grammar___dealloc__(CYTHON_UNUSED struct __pyx_obj_
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__dealloc__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":185
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":185
  * 
  *     def __dealloc__(self):
  *         del self.grammar             # <<<<<<<<<<<<<<
@@ -8003,7 +8159,7 @@ static PyObject *__pyx_pw_5_cdec_7Grammar_3__iter__(PyObject *__pyx_v_self) {
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":187
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":187
  *         del self.grammar
  * 
  *     def __iter__(self):             # <<<<<<<<<<<<<<
@@ -8066,7 +8222,7 @@ static PyObject *__pyx_gb_5_cdec_7Grammar_4generator3(__pyx_GeneratorObject *__p
   __pyx_L3_first_run:;
   if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 187; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":188
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":188
  * 
  *     def __iter__(self):
  *         cdef grammar.const_GrammarIter* root = self.grammar.get().GetRoot()             # <<<<<<<<<<<<<<
@@ -8075,7 +8231,7 @@ static PyObject *__pyx_gb_5_cdec_7Grammar_4generator3(__pyx_GeneratorObject *__p
  */
   __pyx_cur_scope->__pyx_v_root = __pyx_cur_scope->__pyx_v_self->grammar->get()->GetRoot();
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":189
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":189
  *     def __iter__(self):
  *         cdef grammar.const_GrammarIter* root = self.grammar.get().GetRoot()
  *         cdef grammar.const_RuleBin* rbin = root.GetRules()             # <<<<<<<<<<<<<<
@@ -8084,7 +8240,7 @@ static PyObject *__pyx_gb_5_cdec_7Grammar_4generator3(__pyx_GeneratorObject *__p
  */
   __pyx_cur_scope->__pyx_v_rbin = __pyx_cur_scope->__pyx_v_root->GetRules();
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":192
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":192
  *         cdef TRule trule
  *         cdef unsigned i
  *         for i in range(rbin.GetNumRules()):             # <<<<<<<<<<<<<<
@@ -8095,7 +8251,7 @@ static PyObject *__pyx_gb_5_cdec_7Grammar_4generator3(__pyx_GeneratorObject *__p
   for (__pyx_t_2 = 0; __pyx_t_2 < __pyx_t_1; __pyx_t_2+=1) {
     __pyx_cur_scope->__pyx_v_i = __pyx_t_2;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":193
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":193
  *         cdef unsigned i
  *         for i in range(rbin.GetNumRules()):
  *             trule = TRule.__new__(TRule)             # <<<<<<<<<<<<<<
@@ -8111,7 +8267,7 @@ static PyObject *__pyx_gb_5_cdec_7Grammar_4generator3(__pyx_GeneratorObject *__p
     __pyx_cur_scope->__pyx_v_trule = ((struct __pyx_obj_5_cdec_TRule *)__pyx_t_3);
     __pyx_t_3 = 0;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":194
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":194
  *         for i in range(rbin.GetNumRules()):
  *             trule = TRule.__new__(TRule)
  *             trule.rule = new shared_ptr[grammar.TRule](rbin.GetIthRule(i))             # <<<<<<<<<<<<<<
@@ -8120,7 +8276,7 @@ static PyObject *__pyx_gb_5_cdec_7Grammar_4generator3(__pyx_GeneratorObject *__p
  */
     __pyx_cur_scope->__pyx_v_trule->rule = new boost::shared_ptr<TRule>(__pyx_cur_scope->__pyx_v_rbin->GetIthRule(__pyx_cur_scope->__pyx_v_i));
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":195
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":195
  *             trule = TRule.__new__(TRule)
  *             trule.rule = new shared_ptr[grammar.TRule](rbin.GetIthRule(i))
  *             yield trule             # <<<<<<<<<<<<<<
@@ -8149,6 +8305,7 @@ static PyObject *__pyx_gb_5_cdec_7Grammar_4generator3(__pyx_GeneratorObject *__p
   __pyx_L0:;
   __Pyx_XDECREF(__pyx_r);
   __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
   __Pyx_RefNannyFinishContext();
   return NULL;
 }
@@ -8164,7 +8321,7 @@ static PyObject *__pyx_pw_5_cdec_7Grammar_4name_1__get__(PyObject *__pyx_v_self)
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":198
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":198
  * 
  *     property name:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -8177,7 +8334,7 @@ static PyObject *__pyx_pf_5_cdec_7Grammar_4name___get__(struct __pyx_obj_5_cdec_
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__get__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":199
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":199
  *     property name:
  *         def __get__(self):
  *             self.grammar.get().GetGrammarName().c_str()             # <<<<<<<<<<<<<<
@@ -8203,7 +8360,7 @@ static int __pyx_pw_5_cdec_7Grammar_4name_3__set__(PyObject *__pyx_v_self, PyObj
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":201
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":201
  *             self.grammar.get().GetGrammarName().c_str()
  * 
  *         def __set__(self, name):             # <<<<<<<<<<<<<<
@@ -8220,7 +8377,7 @@ static int __pyx_pf_5_cdec_7Grammar_4name_2__set__(struct __pyx_obj_5_cdec_Gramm
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__set__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":202
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":202
  * 
  *         def __set__(self, name):
  *             self.grammar.get().SetGrammarName(string(<char *>name))             # <<<<<<<<<<<<<<
@@ -8244,11 +8401,11 @@ static int __pyx_pf_5_cdec_7Grammar_4name_2__set__(struct __pyx_obj_5_cdec_Gramm
 static int __pyx_pw_5_cdec_11TextGrammar_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
 static int __pyx_pw_5_cdec_11TextGrammar_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
   PyObject *__pyx_v_rules = 0;
-  static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__rules,0};
   int __pyx_r;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__cinit__ (wrapper)", 0);
   {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__rules,0};
     PyObject* values[1] = {0};
     if (unlikely(__pyx_kwds)) {
       Py_ssize_t kw_args;
@@ -8261,8 +8418,7 @@ static int __pyx_pw_5_cdec_11TextGrammar_1__cinit__(PyObject *__pyx_v_self, PyOb
       kw_args = PyDict_Size(__pyx_kwds);
       switch (pos_args) {
         case  0:
-        values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__rules);
-        if (likely(values[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)) {
@@ -8288,7 +8444,7 @@ static int __pyx_pw_5_cdec_11TextGrammar_1__cinit__(PyObject *__pyx_v_self, PyOb
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/grammar.pxi":205
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":205
  * 
  * cdef class TextGrammar(Grammar):
  *     def __cinit__(self, rules):             # <<<<<<<<<<<<<<
@@ -8313,7 +8469,7 @@ static int __pyx_pf_5_cdec_11TextGrammar___cinit__(struct __pyx_obj_5_cdec_TextG
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__cinit__", 0);
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":206
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":206
  * cdef class TextGrammar(Grammar):
  *     def __cinit__(self, rules):
  *         self.grammar = new shared_ptr[grammar.Grammar](new grammar.TextGrammar())             # <<<<<<<<<<<<<<
@@ -8322,7 +8478,7 @@ static int __pyx_pf_5_cdec_11TextGrammar___cinit__(struct __pyx_obj_5_cdec_TextG
  */
   __pyx_v_self->__pyx_base.grammar = new boost::shared_ptr<Grammar>(new TextGrammar());
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":207
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":207
  *     def __cinit__(self, rules):
  *         self.grammar = new shared_ptr[grammar.Grammar](new grammar.TextGrammar())
  *         cdef grammar.TextGrammar* _g = <grammar.TextGrammar*> self.grammar.get()             # <<<<<<<<<<<<<<
@@ -8331,7 +8487,7 @@ static int __pyx_pf_5_cdec_11TextGrammar___cinit__(struct __pyx_obj_5_cdec_TextG
  */
   __pyx_v__g = ((TextGrammar *)__pyx_v_self->__pyx_base.grammar->get());
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":208
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":208
  *         self.grammar = new shared_ptr[grammar.Grammar](new grammar.TextGrammar())
  *         cdef grammar.TextGrammar* _g = <grammar.TextGrammar*> self.grammar.get()
  *         for trule in rules:             # <<<<<<<<<<<<<<
@@ -8349,10 +8505,18 @@ static int __pyx_pf_5_cdec_11TextGrammar___cinit__(struct __pyx_obj_5_cdec_TextG
   for (;;) {
     if (!__pyx_t_3 && PyList_CheckExact(__pyx_t_1)) {
       if (__pyx_t_2 >= PyList_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++;
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 208; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else if (!__pyx_t_3 && PyTuple_CheckExact(__pyx_t_1)) {
       if (__pyx_t_2 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++;
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 208; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else {
       __pyx_t_4 = __pyx_t_3(__pyx_t_1);
       if (unlikely(!__pyx_t_4)) {
@@ -8368,7 +8532,7 @@ static int __pyx_pf_5_cdec_11TextGrammar___cinit__(struct __pyx_obj_5_cdec_TextG
     __pyx_v_trule = __pyx_t_4;
     __pyx_t_4 = 0;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":209
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":209
  *         cdef grammar.TextGrammar* _g = <grammar.TextGrammar*> self.grammar.get()
  *         for trule in rules:
  *             if isinstance(trule, _sa.Rule):             # <<<<<<<<<<<<<<
@@ -8381,7 +8545,7 @@ static int __pyx_pf_5_cdec_11TextGrammar___cinit__(struct __pyx_obj_5_cdec_TextG
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
     if (__pyx_t_5) {
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":210
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":210
  *         for trule in rules:
  *             if isinstance(trule, _sa.Rule):
  *                 trule = convert_rule(trule)             # <<<<<<<<<<<<<<
@@ -8400,7 +8564,7 @@ static int __pyx_pf_5_cdec_11TextGrammar___cinit__(struct __pyx_obj_5_cdec_TextG
       goto __pyx_L5;
     }
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":211
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":211
  *             if isinstance(trule, _sa.Rule):
  *                 trule = convert_rule(trule)
  *             elif not isinstance(trule, TRule):             # <<<<<<<<<<<<<<
@@ -8414,7 +8578,7 @@ static int __pyx_pf_5_cdec_11TextGrammar___cinit__(struct __pyx_obj_5_cdec_TextG
     __pyx_t_7 = (!__pyx_t_5);
     if (__pyx_t_7) {
 
-      /* "/home/cdyer/cdec/python/src/grammar.pxi":212
+      /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":212
  *                 trule = convert_rule(trule)
  *             elif not isinstance(trule, TRule):
  *                 raise ValueError('the grammar should contain TRule objects')             # <<<<<<<<<<<<<<
@@ -8429,7 +8593,7 @@ static int __pyx_pf_5_cdec_11TextGrammar___cinit__(struct __pyx_obj_5_cdec_TextG
     }
     __pyx_L5:;
 
-    /* "/home/cdyer/cdec/python/src/grammar.pxi":213
+    /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":213
  *             elif not isinstance(trule, TRule):
  *                 raise ValueError('the grammar should contain TRule objects')
  *             _g.AddRule((<TRule> trule).rule[0])             # <<<<<<<<<<<<<<
@@ -8461,7 +8625,7 @@ static void __pyx_pw_5_cdec_10Hypergraph_1__dealloc__(PyObject *__pyx_v_self) {
   __Pyx_RefNannyFinishContext();
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":8
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":8
  *     cdef MT19937* rng
  * 
  *     def __dealloc__(self):             # <<<<<<<<<<<<<<
@@ -8474,7 +8638,7 @@ static void __pyx_pf_5_cdec_10Hypergraph___dealloc__(struct __pyx_obj_5_cdec_Hyp
   int __pyx_t_1;
   __Pyx_RefNannySetupContext("__dealloc__", 0);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":9
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":9
  * 
  *     def __dealloc__(self):
  *         del self.hg             # <<<<<<<<<<<<<<
@@ -8483,7 +8647,7 @@ static void __pyx_pf_5_cdec_10Hypergraph___dealloc__(struct __pyx_obj_5_cdec_Hyp
  */
   delete __pyx_v_self->hg;
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":10
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":10
  *     def __dealloc__(self):
  *         del self.hg
  *         if self.rng != NULL:             # <<<<<<<<<<<<<<
@@ -8493,12 +8657,12 @@ static void __pyx_pf_5_cdec_10Hypergraph___dealloc__(struct __pyx_obj_5_cdec_Hyp
   __pyx_t_1 = (__pyx_v_self->rng != NULL);
   if (__pyx_t_1) {
 
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":11
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":11
  *         del self.hg
  *         if self.rng != NULL:
  *             del self.rng             # <<<<<<<<<<<<<<
  * 
- *     def viterbi(self):
+ *     cdef MT19937* _rng(self):
  */
     delete __pyx_v_self->rng;
     goto __pyx_L3;
@@ -8508,6 +8672,67 @@ static void __pyx_pf_5_cdec_10Hypergraph___dealloc__(struct __pyx_obj_5_cdec_Hyp
   __Pyx_RefNannyFinishContext();
 }
 
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":13
+ *             del self.rng
+ * 
+ *     cdef MT19937* _rng(self):             # <<<<<<<<<<<<<<
+ *         if self.rng == NULL:
+ *             self.rng = new MT19937()
+ */
+
+static MT19937 *__pyx_f_5_cdec_10Hypergraph__rng(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self) {
+  MT19937 *__pyx_r;
+  __Pyx_RefNannyDeclarations
+  int __pyx_t_1;
+  MT19937 *__pyx_t_2;
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("_rng", 0);
+
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":14
+ * 
+ *     cdef MT19937* _rng(self):
+ *         if self.rng == NULL:             # <<<<<<<<<<<<<<
+ *             self.rng = new MT19937()
+ *         return self.rng
+ */
+  __pyx_t_1 = (__pyx_v_self->rng == NULL);
+  if (__pyx_t_1) {
+
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":15
+ *     cdef MT19937* _rng(self):
+ *         if self.rng == NULL:
+ *             self.rng = new MT19937()             # <<<<<<<<<<<<<<
+ *         return self.rng
+ * 
+ */
+    try {__pyx_t_2 = new MT19937();} catch(...) {__Pyx_CppExn2PyErr(); {__pyx_filename = __pyx_f[3]; __pyx_lineno = 15; __pyx_clineno = __LINE__; goto __pyx_L1_error;}}
+    __pyx_v_self->rng = __pyx_t_2;
+    goto __pyx_L3;
+  }
+  __pyx_L3:;
+
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":16
+ *         if self.rng == NULL:
+ *             self.rng = new MT19937()
+ *         return self.rng             # <<<<<<<<<<<<<<
+ * 
+ *     def viterbi(self):
+ */
+  __pyx_r = __pyx_v_self->rng;
+  goto __pyx_L0;
+
+  __pyx_r = 0;
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_WriteUnraisable("_cdec.Hypergraph._rng", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = 0;
+  __pyx_L0:;
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
 /* Python wrapper */
 static PyObject *__pyx_pw_5_cdec_10Hypergraph_3viterbi(PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *unused); /*proto*/
 static PyObject *__pyx_pw_5_cdec_10Hypergraph_3viterbi(PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *unused) {
@@ -8519,8 +8744,8 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_3viterbi(PyObject *__pyx_v_self, C
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":13
- *             del self.rng
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":18
+ *         return self.rng
  * 
  *     def viterbi(self):             # <<<<<<<<<<<<<<
  *         cdef vector[WordID] trans
@@ -8538,7 +8763,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_2viterbi(struct __pyx_obj_5_cdec_H
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("viterbi", 0);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":15
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":20
  *     def viterbi(self):
  *         cdef vector[WordID] trans
  *         hypergraph.ViterbiESentence(self.hg[0], &trans)             # <<<<<<<<<<<<<<
@@ -8547,7 +8772,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_2viterbi(struct __pyx_obj_5_cdec_H
  */
   ViterbiESentence((__pyx_v_self->hg[0]), (&__pyx_v_trans));
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":16
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":21
  *         cdef vector[WordID] trans
  *         hypergraph.ViterbiESentence(self.hg[0], &trans)
  *         return unicode(GetString(trans).c_str(), 'utf8')             # <<<<<<<<<<<<<<
@@ -8555,9 +8780,9 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_2viterbi(struct __pyx_obj_5_cdec_H
  *     def viterbi_trees(self):
  */
   __Pyx_XDECREF(__pyx_r);
-  __pyx_t_1 = PyBytes_FromString(TD::GetString(__pyx_v_trans).c_str()); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 16; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyBytes_FromString(TD::GetString(__pyx_v_trans).c_str()); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 21; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_1));
-  __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 16; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 21; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_t_1));
   __Pyx_GIVEREF(((PyObject *)__pyx_t_1));
@@ -8565,7 +8790,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_2viterbi(struct __pyx_obj_5_cdec_H
   PyTuple_SET_ITEM(__pyx_t_2, 1, ((PyObject *)__pyx_n_s__utf8));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__utf8));
   __pyx_t_1 = 0;
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyUnicode_Type))), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 16; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyUnicode_Type))), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 21; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
   __pyx_r = __pyx_t_1;
@@ -8596,7 +8821,7 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_5viterbi_trees(PyObject *__pyx_v_s
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":18
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":23
  *         return unicode(GetString(trans).c_str(), 'utf8')
  * 
  *     def viterbi_trees(self):             # <<<<<<<<<<<<<<
@@ -8616,16 +8841,16 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_4viterbi_trees(struct __pyx_obj_5_
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("viterbi_trees", 0);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":19
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":24
  * 
  *     def viterbi_trees(self):
  *         f_tree = unicode(hypergraph.ViterbiFTree(self.hg[0]).c_str(), 'utf8')             # <<<<<<<<<<<<<<
  *         e_tree = unicode(hypergraph.ViterbiETree(self.hg[0]).c_str(), 'utf8')
  *         return (f_tree, e_tree)
  */
-  __pyx_t_1 = PyBytes_FromString(ViterbiFTree((__pyx_v_self->hg[0])).c_str()); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 19; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyBytes_FromString(ViterbiFTree((__pyx_v_self->hg[0])).c_str()); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 24; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_1));
-  __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 19; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 24; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_t_1));
   __Pyx_GIVEREF(((PyObject *)__pyx_t_1));
@@ -8633,22 +8858,22 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_4viterbi_trees(struct __pyx_obj_5_
   PyTuple_SET_ITEM(__pyx_t_2, 1, ((PyObject *)__pyx_n_s__utf8));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__utf8));
   __pyx_t_1 = 0;
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyUnicode_Type))), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 19; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyUnicode_Type))), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 24; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_v_f_tree = ((PyObject*)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":20
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":25
  *     def viterbi_trees(self):
  *         f_tree = unicode(hypergraph.ViterbiFTree(self.hg[0]).c_str(), 'utf8')
  *         e_tree = unicode(hypergraph.ViterbiETree(self.hg[0]).c_str(), 'utf8')             # <<<<<<<<<<<<<<
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  * 
  */
-  __pyx_t_1 = PyBytes_FromString(ViterbiETree((__pyx_v_self->hg[0])).c_str()); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 20; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyBytes_FromString(ViterbiETree((__pyx_v_self->hg[0])).c_str()); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_1));
-  __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 20; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_t_1));
   __Pyx_GIVEREF(((PyObject *)__pyx_t_1));
@@ -8656,13 +8881,13 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_4viterbi_trees(struct __pyx_obj_5_
   PyTuple_SET_ITEM(__pyx_t_2, 1, ((PyObject *)__pyx_n_s__utf8));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__utf8));
   __pyx_t_1 = 0;
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyUnicode_Type))), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 20; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyUnicode_Type))), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
   __pyx_v_e_tree = ((PyObject*)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":21
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":26
  *         f_tree = unicode(hypergraph.ViterbiFTree(self.hg[0]).c_str(), 'utf8')
  *         e_tree = unicode(hypergraph.ViterbiETree(self.hg[0]).c_str(), 'utf8')
  *         return (f_tree, e_tree)             # <<<<<<<<<<<<<<
@@ -8670,7 +8895,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_4viterbi_trees(struct __pyx_obj_5_
  *     def viterbi_features(self):
  */
   __Pyx_XDECREF(__pyx_r);
-  __pyx_t_1 = PyTuple_New(2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 21; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyTuple_New(2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_INCREF(((PyObject *)__pyx_v_f_tree));
   PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)__pyx_v_f_tree));
@@ -8708,7 +8933,7 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_7viterbi_features(PyObject *__pyx_
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":23
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":28
  *         return (f_tree, e_tree)
  * 
  *     def viterbi_features(self):             # <<<<<<<<<<<<<<
@@ -8726,20 +8951,20 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_6viterbi_features(struct __pyx_obj
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("viterbi_features", 0);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":24
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":29
  * 
  *     def viterbi_features(self):
  *         cdef SparseVector fmap = SparseVector.__new__(SparseVector)             # <<<<<<<<<<<<<<
  *         fmap.vector = new FastSparseVector[weight_t](hypergraph.ViterbiFeatures(self.hg[0]))
  *         return fmap
  */
-  __pyx_t_1 = __Pyx_tp_new(((PyObject*)__pyx_ptype_5_cdec_SparseVector)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 24; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_tp_new(((PyObject*)__pyx_ptype_5_cdec_SparseVector)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 29; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  if (!(likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_5_cdec_SparseVector)))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 24; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (!(likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_5_cdec_SparseVector)))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 29; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_fmap = ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":25
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":30
  *     def viterbi_features(self):
  *         cdef SparseVector fmap = SparseVector.__new__(SparseVector)
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@@ -8748,7 +8973,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_6viterbi_features(struct __pyx_obj
  */
   __pyx_v_fmap->vector = new FastSparseVector<weight_t>(ViterbiFeatures((__pyx_v_self->hg[0])));
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":26
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":31
  *         cdef SparseVector fmap = SparseVector.__new__(SparseVector)
  *         fmap.vector = new FastSparseVector[weight_t](hypergraph.ViterbiFeatures(self.hg[0]))
  *         return fmap             # <<<<<<<<<<<<<<
@@ -8784,7 +9009,7 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_9viterbi_joshua(PyObject *__pyx_v_
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":28
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":33
  *         return fmap
  * 
  *     def viterbi_joshua(self):             # <<<<<<<<<<<<<<
@@ -8802,7 +9027,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_8viterbi_joshua(struct __pyx_obj_5
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("viterbi_joshua", 0);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":29
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":34
  * 
  *     def viterbi_joshua(self):
  *         return unicode(hypergraph.JoshuaVisualizationString(self.hg[0]).c_str(), 'utf8')             # <<<<<<<<<<<<<<
@@ -8810,9 +9035,9 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_8viterbi_joshua(struct __pyx_obj_5
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-  __pyx_t_1 = PyBytes_FromString(JoshuaVisualizationString((__pyx_v_self->hg[0])).c_str()); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 29; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyBytes_FromString(JoshuaVisualizationString((__pyx_v_self->hg[0])).c_str()); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 29; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -8820,7 +9045,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_8viterbi_joshua(struct __pyx_obj_5
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   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__utf8));
   __pyx_t_1 = 0;
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyUnicode_Type))), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 29; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyUnicode_Type))), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -8852,7 +9077,7 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_11kbest(PyObject *__pyx_v_self, Py
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":31
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":36
  *         return unicode(hypergraph.JoshuaVisualizationString(self.hg[0]).c_str(), 'utf8')
  * 
  *     def kbest(self, size):             # <<<<<<<<<<<<<<
@@ -8881,7 +9106,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_10kbest(struct __pyx_obj_5_cdec_Hy
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   __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_size);
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-    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_10Hypergraph_12generator4, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_10Hypergraph_12generator4, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 36; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -8918,19 +9143,19 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_12generator4(__pyx_GeneratorObject
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   __pyx_L3_first_run:;
-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 36; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":32
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":37
  * 
  *     def kbest(self, size):
  *         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 unsigned k
  */
-  __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 = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __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 = 37; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_cur_scope->__pyx_v_derivations = new KBest::KBestDerivations<std::vector<WordID>,ESentenceTraversal>((__pyx_cur_scope->__pyx_v_self->hg[0]), __pyx_t_1);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":35
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":40
  *         cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal].Derivation* derivation
  *         cdef unsigned k
  *         try:             # <<<<<<<<<<<<<<
@@ -8939,18 +9164,18 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_12generator4(__pyx_GeneratorObject
  */
   /*try:*/ {
 
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":36
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":41
  *         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_AsLong(__pyx_cur_scope->__pyx_v_size); if (unlikely((__pyx_t_2 == (long)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 36; __pyx_clineno = __LINE__; goto __pyx_L5;}
+    __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 = 41; __pyx_clineno = __LINE__; goto __pyx_L5;}
     for (__pyx_t_1 = 0; __pyx_t_1 < __pyx_t_2; __pyx_t_1+=1) {
       __pyx_cur_scope->__pyx_v_k = __pyx_t_1;
 
-      /* "/home/cdyer/cdec/python/src/hypergraph.pxi":37
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":42
  *         try:
  *             for k in range(size):
  *                 derivation = derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)             # <<<<<<<<<<<<<<
@@ -8959,7 +9184,7 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_12generator4(__pyx_GeneratorObject
  */
       __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);
 
-      /* "/home/cdyer/cdec/python/src/hypergraph.pxi":38
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":43
  *             for k in range(size):
  *                 derivation = derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)
  *                 if not derivation: break             # <<<<<<<<<<<<<<
@@ -8973,16 +9198,16 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_12generator4(__pyx_GeneratorObject
       }
       __pyx_L9:;
 
-      /* "/home/cdyer/cdec/python/src/hypergraph.pxi":39
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":44
  *                 derivation = derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)
  *                 if not derivation: break
  *                 yield unicode(GetString(derivation._yield).c_str(), 'utf8')             # <<<<<<<<<<<<<<
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  *             del derivations
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-      __pyx_t_4 = PyBytes_FromString(TD::GetString(__pyx_cur_scope->__pyx_v_derivation->yield).c_str()); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      __pyx_t_4 = PyBytes_FromString(TD::GetString(__pyx_cur_scope->__pyx_v_derivation->yield).c_str()); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 44; __pyx_clineno = __LINE__; goto __pyx_L5;}
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-      __pyx_t_5 = PyTuple_New(2); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      __pyx_t_5 = PyTuple_New(2); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 44; __pyx_clineno = __LINE__; goto __pyx_L5;}
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       __Pyx_GIVEREF(((PyObject *)__pyx_t_4));
@@ -8990,7 +9215,7 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_12generator4(__pyx_GeneratorObject
       PyTuple_SET_ITEM(__pyx_t_5, 1, ((PyObject *)__pyx_n_s__utf8));
       __Pyx_GIVEREF(((PyObject *)__pyx_n_s__utf8));
       __pyx_t_4 = 0;
-      __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)(&PyUnicode_Type))), ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)(&PyUnicode_Type))), ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 44; __pyx_clineno = __LINE__; goto __pyx_L5;}
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@@ -9005,12 +9230,12 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_12generator4(__pyx_GeneratorObject
       __pyx_L10_resume_from_yield:;
       __pyx_t_1 = __pyx_cur_scope->__pyx_t_0;
       __pyx_t_2 = __pyx_cur_scope->__pyx_t_1;
-      if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 44; __pyx_clineno = __LINE__; goto __pyx_L5;}
     }
     __pyx_L8_break:;
   }
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":41
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":46
  *                 yield unicode(GetString(derivation._yield).c_str(), 'utf8')
  *         finally:
  *             del derivations             # <<<<<<<<<<<<<<
@@ -9053,6 +9278,7 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_12generator4(__pyx_GeneratorObject
   __pyx_L0:;
   __Pyx_XDECREF(__pyx_r);
   __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
   __Pyx_RefNannyFinishContext();
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 }
@@ -9069,7 +9295,7 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_14kbest_trees(PyObject *__pyx_v_se
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":43
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":48
  *             del derivations
  * 
  *     def kbest_trees(self, size):             # <<<<<<<<<<<<<<
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   __Pyx_INCREF(__pyx_cur_scope->__pyx_v_size);
   __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_size);
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-    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_10Hypergraph_15generator5, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_10Hypergraph_15generator5, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 48; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -9137,29 +9363,29 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_15generator5(__pyx_GeneratorObject
     return NULL;
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-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 48; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":44
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":49
  * 
  *     def kbest_trees(self, size):
  *         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
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-  __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 = 44; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __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 = 49; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_cur_scope->__pyx_v_f_derivations = new KBest::KBestDerivations<std::vector<WordID>,FTreeTraversal>((__pyx_cur_scope->__pyx_v_self->hg[0]), __pyx_t_1);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":46
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":51
  *         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
  *         cdef unsigned k
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-  __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 = 46; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __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_e_derivations = new KBest::KBestDerivations<std::vector<WordID>,ETreeTraversal>((__pyx_cur_scope->__pyx_v_self->hg[0]), __pyx_t_1);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":49
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":54
  *         cdef kbest.KBestDerivations[vector[WordID], kbest.ETreeTraversal].Derivation* e_derivation
  *         cdef unsigned k
  *         try:             # <<<<<<<<<<<<<<
@@ -9168,18 +9394,18 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_15generator5(__pyx_GeneratorObject
  */
   /*try:*/ {
 
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":50
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":55
  *         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)
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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 = 50; __pyx_clineno = __LINE__; goto __pyx_L5;}
+    __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;}
     for (__pyx_t_1 = 0; __pyx_t_1 < __pyx_t_2; __pyx_t_1+=1) {
       __pyx_cur_scope->__pyx_v_k = __pyx_t_1;
 
-      /* "/home/cdyer/cdec/python/src/hypergraph.pxi":51
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":56
  *         try:
  *             for k in range(size):
  *                 f_derivation = f_derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)             # <<<<<<<<<<<<<<
@@ -9188,7 +9414,7 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_15generator5(__pyx_GeneratorObject
  */
       __pyx_cur_scope->__pyx_v_f_derivation = __pyx_cur_scope->__pyx_v_f_derivations->LazyKthBest((__pyx_cur_scope->__pyx_v_self->hg->nodes_.size() - 1), __pyx_cur_scope->__pyx_v_k);
 
-      /* "/home/cdyer/cdec/python/src/hypergraph.pxi":52
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":57
  *             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)             # <<<<<<<<<<<<<<
@@ -9197,7 +9423,7 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_15generator5(__pyx_GeneratorObject
  */
       __pyx_cur_scope->__pyx_v_e_derivation = __pyx_cur_scope->__pyx_v_e_derivations->LazyKthBest((__pyx_cur_scope->__pyx_v_self->hg->nodes_.size() - 1), __pyx_cur_scope->__pyx_v_k);
 
-      /* "/home/cdyer/cdec/python/src/hypergraph.pxi":53
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":58
  *                 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             # <<<<<<<<<<<<<<
@@ -9217,16 +9443,16 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_15generator5(__pyx_GeneratorObject
       }
       __pyx_L9:;
 
-      /* "/home/cdyer/cdec/python/src/hypergraph.pxi":54
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":59
  *                 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)
  */
-      __pyx_t_6 = PyBytes_FromString(TD::GetString(__pyx_cur_scope->__pyx_v_f_derivation->yield).c_str()); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 54; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      __pyx_t_6 = PyBytes_FromString(TD::GetString(__pyx_cur_scope->__pyx_v_f_derivation->yield).c_str()); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 59; __pyx_clineno = __LINE__; goto __pyx_L5;}
       __Pyx_GOTREF(((PyObject *)__pyx_t_6));
-      __pyx_t_7 = PyTuple_New(2); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 54; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      __pyx_t_7 = PyTuple_New(2); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 59; __pyx_clineno = __LINE__; goto __pyx_L5;}
       __Pyx_GOTREF(__pyx_t_7);
       PyTuple_SET_ITEM(__pyx_t_7, 0, ((PyObject *)__pyx_t_6));
       __Pyx_GIVEREF(((PyObject *)__pyx_t_6));
@@ -9234,7 +9460,7 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_15generator5(__pyx_GeneratorObject
       PyTuple_SET_ITEM(__pyx_t_7, 1, ((PyObject *)__pyx_n_s__utf8));
       __Pyx_GIVEREF(((PyObject *)__pyx_n_s__utf8));
       __pyx_t_6 = 0;
-      __pyx_t_6 = PyObject_Call(((PyObject *)((PyObject*)(&PyUnicode_Type))), ((PyObject *)__pyx_t_7), NULL); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 54; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      __pyx_t_6 = PyObject_Call(((PyObject *)((PyObject*)(&PyUnicode_Type))), ((PyObject *)__pyx_t_7), NULL); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 59; __pyx_clineno = __LINE__; goto __pyx_L5;}
       __Pyx_GOTREF(__pyx_t_6);
       __Pyx_DECREF(((PyObject *)__pyx_t_7)); __pyx_t_7 = 0;
       __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_f_tree));
@@ -9243,16 +9469,16 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_15generator5(__pyx_GeneratorObject
       __pyx_cur_scope->__pyx_v_f_tree = ((PyObject*)__pyx_t_6);
       __pyx_t_6 = 0;
 
-      /* "/home/cdyer/cdec/python/src/hypergraph.pxi":55
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":60
  *                 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)
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-      __pyx_t_6 = PyBytes_FromString(TD::GetString(__pyx_cur_scope->__pyx_v_e_derivation->yield).c_str()); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 55; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      __pyx_t_6 = PyBytes_FromString(TD::GetString(__pyx_cur_scope->__pyx_v_e_derivation->yield).c_str()); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 60; __pyx_clineno = __LINE__; goto __pyx_L5;}
       __Pyx_GOTREF(((PyObject *)__pyx_t_6));
-      __pyx_t_7 = PyTuple_New(2); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 55; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      __pyx_t_7 = PyTuple_New(2); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 60; __pyx_clineno = __LINE__; goto __pyx_L5;}
       __Pyx_GOTREF(__pyx_t_7);
       PyTuple_SET_ITEM(__pyx_t_7, 0, ((PyObject *)__pyx_t_6));
       __Pyx_GIVEREF(((PyObject *)__pyx_t_6));
@@ -9260,7 +9486,7 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_15generator5(__pyx_GeneratorObject
       PyTuple_SET_ITEM(__pyx_t_7, 1, ((PyObject *)__pyx_n_s__utf8));
       __Pyx_GIVEREF(((PyObject *)__pyx_n_s__utf8));
       __pyx_t_6 = 0;
-      __pyx_t_6 = PyObject_Call(((PyObject *)((PyObject*)(&PyUnicode_Type))), ((PyObject *)__pyx_t_7), NULL); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 55; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      __pyx_t_6 = PyObject_Call(((PyObject *)((PyObject*)(&PyUnicode_Type))), ((PyObject *)__pyx_t_7), NULL); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 60; __pyx_clineno = __LINE__; goto __pyx_L5;}
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       __Pyx_DECREF(((PyObject *)__pyx_t_7)); __pyx_t_7 = 0;
       __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_e_tree));
@@ -9269,14 +9495,14 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_15generator5(__pyx_GeneratorObject
       __pyx_cur_scope->__pyx_v_e_tree = ((PyObject*)__pyx_t_6);
       __pyx_t_6 = 0;
 
-      /* "/home/cdyer/cdec/python/src/hypergraph.pxi":56
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":61
  *                 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
  */
-      __pyx_t_6 = PyTuple_New(2); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 56; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      __pyx_t_6 = PyTuple_New(2); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L5;}
       __Pyx_GOTREF(__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));
@@ -9296,12 +9522,12 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_15generator5(__pyx_GeneratorObject
       __pyx_L10_resume_from_yield:;
       __pyx_t_1 = __pyx_cur_scope->__pyx_t_0;
       __pyx_t_2 = __pyx_cur_scope->__pyx_t_1;
-      if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 56; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L5;}
     }
     __pyx_L8_break:;
   }
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":58
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":63
  *                 yield (f_tree, e_tree)
  *         finally:
  *             del f_derivations             # <<<<<<<<<<<<<<
@@ -9325,7 +9551,7 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_15generator5(__pyx_GeneratorObject
     __pyx_L6:;
     delete __pyx_cur_scope->__pyx_v_f_derivations;
 
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":59
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":64
  *         finally:
  *             del f_derivations
  *             del e_derivations             # <<<<<<<<<<<<<<
@@ -9353,6 +9579,7 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_15generator5(__pyx_GeneratorObject
   __pyx_L0:;
   __Pyx_XDECREF(__pyx_r);
   __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
   __Pyx_RefNannyFinishContext();
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 }
@@ -9369,7 +9596,7 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_17kbest_features(PyObject *__pyx_v
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":61
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":66
  *             del e_derivations
  * 
  *     def kbest_features(self, size):             # <<<<<<<<<<<<<<
@@ -9398,7 +9625,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_16kbest_features(struct __pyx_obj_
   __Pyx_INCREF(__pyx_cur_scope->__pyx_v_size);
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-    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_10Hypergraph_18generator6, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_10Hypergraph_18generator6, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 66; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -9434,19 +9661,19 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_18generator6(__pyx_GeneratorObject
     return NULL;
   }
   __pyx_L3_first_run:;
-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 66; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":62
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":67
  * 
  *     def kbest_features(self, size):
  *         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 SparseVector fmap
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-  __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 = 62; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __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 = 67; __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);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":66
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":71
  *         cdef SparseVector fmap
  *         cdef unsigned k
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@@ -9455,18 +9682,18 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_18generator6(__pyx_GeneratorObject
  */
   /*try:*/ {
 
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":67
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":72
  *         cdef unsigned k
  *         try:
  *             for k in range(size):             # <<<<<<<<<<<<<<
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  *                 if not derivation: break
  */
-    __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 = 67; __pyx_clineno = __LINE__; goto __pyx_L5;}
+    __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 = 72; __pyx_clineno = __LINE__; goto __pyx_L5;}
     for (__pyx_t_1 = 0; __pyx_t_1 < __pyx_t_2; __pyx_t_1+=1) {
       __pyx_cur_scope->__pyx_v_k = __pyx_t_1;
 
-      /* "/home/cdyer/cdec/python/src/hypergraph.pxi":68
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":73
  *         try:
  *             for k in range(size):
  *                 derivation = derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)             # <<<<<<<<<<<<<<
@@ -9475,7 +9702,7 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_18generator6(__pyx_GeneratorObject
  */
       __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);
 
-      /* "/home/cdyer/cdec/python/src/hypergraph.pxi":69
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":74
  *             for k in range(size):
  *                 derivation = derivations.LazyKthBest(self.hg.nodes_.size() - 1, k)
  *                 if not derivation: break             # <<<<<<<<<<<<<<
@@ -9489,23 +9716,23 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_18generator6(__pyx_GeneratorObject
       }
       __pyx_L9:;
 
-      /* "/home/cdyer/cdec/python/src/hypergraph.pxi":70
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":75
  *                 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(((PyObject*)__pyx_ptype_5_cdec_SparseVector)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 70; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      __pyx_t_4 = __Pyx_tp_new(((PyObject*)__pyx_ptype_5_cdec_SparseVector)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 75; __pyx_clineno = __LINE__; goto __pyx_L5;}
       __Pyx_GOTREF(__pyx_t_4);
-      if (!(likely(__Pyx_TypeTest(__pyx_t_4, __pyx_ptype_5_cdec_SparseVector)))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 70; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      if (!(likely(__Pyx_TypeTest(__pyx_t_4, __pyx_ptype_5_cdec_SparseVector)))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 75; __pyx_clineno = __LINE__; goto __pyx_L5;}
       __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_fmap));
       __Pyx_XDECREF(((PyObject *)__pyx_cur_scope->__pyx_v_fmap));
       __Pyx_GIVEREF(__pyx_t_4);
       __pyx_cur_scope->__pyx_v_fmap = ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_t_4);
       __pyx_t_4 = 0;
 
-      /* "/home/cdyer/cdec/python/src/hypergraph.pxi":71
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":76
  *                 if not derivation: break
  *                 fmap = SparseVector.__new__(SparseVector)
  *                 fmap.vector = new FastSparseVector[weight_t](derivation._yield)             # <<<<<<<<<<<<<<
@@ -9514,7 +9741,7 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_18generator6(__pyx_GeneratorObject
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       __pyx_cur_scope->__pyx_v_fmap->vector = new FastSparseVector<weight_t>(__pyx_cur_scope->__pyx_v_derivation->yield);
 
-      /* "/home/cdyer/cdec/python/src/hypergraph.pxi":72
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":77
  *                 fmap = SparseVector.__new__(SparseVector)
  *                 fmap.vector = new FastSparseVector[weight_t](derivation._yield)
  *                 yield fmap             # <<<<<<<<<<<<<<
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       __pyx_t_1 = __pyx_cur_scope->__pyx_t_0;
       __pyx_t_2 = __pyx_cur_scope->__pyx_t_1;
-      if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 72; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 77; __pyx_clineno = __LINE__; goto __pyx_L5;}
     }
     __pyx_L8_break:;
   }
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":74
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":79
  *                 yield fmap
  *         finally:
  *             del derivations             # <<<<<<<<<<<<<<
@@ -9579,6 +9806,7 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_18generator6(__pyx_GeneratorObject
   __pyx_L0:;
   __Pyx_XDECREF(__pyx_r);
   __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
   __Pyx_RefNannyFinishContext();
   return NULL;
 }
@@ -9592,7 +9820,7 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_20sample(PyObject *__pyx_v_self, P
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+    __pyx_v_n = __Pyx_PyInt_AsUnsignedInt(__pyx_arg_n); if (unlikely((__pyx_v_n == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 81; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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@@ -9605,12 +9833,12 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_20sample(PyObject *__pyx_v_self, P
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":76
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":81
  *             del derivations
  * 
  *     def sample(self, unsigned n):             # <<<<<<<<<<<<<<
  *         cdef vector[hypergraph.Hypothesis]* hypos = new vector[hypergraph.Hypothesis]()
- *         if self.rng == NULL:
+ *         hypergraph.sample_hypotheses(self.hg[0], n, self._rng(), hypos)
  */
 
 static PyObject *__pyx_pf_5_cdec_10Hypergraph_19sample(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self, unsigned int __pyx_v_n) {
@@ -9632,7 +9860,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_19sample(struct __pyx_obj_5_cdec_H
   __Pyx_GIVEREF((PyObject *)__pyx_cur_scope->__pyx_v_self);
   __pyx_cur_scope->__pyx_v_n = __pyx_v_n;
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-    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_10Hypergraph_21generator7, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 76; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_10Hypergraph_21generator7, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 81; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -9654,65 +9882,42 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_21generator7(__pyx_GeneratorObject
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-  int __pyx_t_1;
-  size_t __pyx_t_2;
-  unsigned int __pyx_t_3;
+  size_t __pyx_t_1;
+  unsigned int __pyx_t_2;
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-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 76; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 81; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":77
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":82
  * 
  *     def sample(self, unsigned n):
  *         cdef vector[hypergraph.Hypothesis]* hypos = new vector[hypergraph.Hypothesis]()             # <<<<<<<<<<<<<<
- *         if self.rng == NULL:
- *             self.rng = new MT19937()
+ *         hypergraph.sample_hypotheses(self.hg[0], n, self._rng(), hypos)
+ *         cdef unsigned k
  */
   __pyx_cur_scope->__pyx_v_hypos = new std::vector<HypergraphSampler::Hypothesis>();
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":78
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":83
  *     def sample(self, unsigned n):
  *         cdef vector[hypergraph.Hypothesis]* hypos = new vector[hypergraph.Hypothesis]()
- *         if self.rng == NULL:             # <<<<<<<<<<<<<<
- *             self.rng = new MT19937()
- *         hypergraph.sample_hypotheses(self.hg[0], n, self.rng, hypos)
- */
-  __pyx_t_1 = (__pyx_cur_scope->__pyx_v_self->rng == NULL);
-  if (__pyx_t_1) {
-
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":79
- *         cdef vector[hypergraph.Hypothesis]* hypos = new vector[hypergraph.Hypothesis]()
- *         if self.rng == NULL:
- *             self.rng = new MT19937()             # <<<<<<<<<<<<<<
- *         hypergraph.sample_hypotheses(self.hg[0], n, self.rng, hypos)
- *         cdef unsigned k
- */
-    __pyx_cur_scope->__pyx_v_self->rng = new MT19937();
-    goto __pyx_L4;
-  }
-  __pyx_L4:;
-
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":80
- *         if self.rng == NULL:
- *             self.rng = new MT19937()
- *         hypergraph.sample_hypotheses(self.hg[0], n, self.rng, hypos)             # <<<<<<<<<<<<<<
+ *         hypergraph.sample_hypotheses(self.hg[0], n, self._rng(), hypos)             # <<<<<<<<<<<<<<
  *         cdef unsigned k
  *         try:
  */
-  HypergraphSampler::sample_hypotheses((__pyx_cur_scope->__pyx_v_self->hg[0]), __pyx_cur_scope->__pyx_v_n, __pyx_cur_scope->__pyx_v_self->rng, __pyx_cur_scope->__pyx_v_hypos);
+  HypergraphSampler::sample_hypotheses((__pyx_cur_scope->__pyx_v_self->hg[0]), __pyx_cur_scope->__pyx_v_n, ((struct __pyx_vtabstruct_5_cdec_Hypergraph *)__pyx_cur_scope->__pyx_v_self->__pyx_vtab)->_rng(__pyx_cur_scope->__pyx_v_self), __pyx_cur_scope->__pyx_v_hypos);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":82
- *         hypergraph.sample_hypotheses(self.hg[0], n, self.rng, hypos)
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":85
+ *         hypergraph.sample_hypotheses(self.hg[0], n, self._rng(), hypos)
  *         cdef unsigned k
  *         try:             # <<<<<<<<<<<<<<
  *             for k in range(hypos.size()):
@@ -9720,54 +9925,54 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_21generator7(__pyx_GeneratorObject
  */
   /*try:*/ {
 
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":83
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":86
  *         cdef unsigned k
  *         try:
  *             for k in range(hypos.size()):             # <<<<<<<<<<<<<<
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-      __pyx_cur_scope->__pyx_v_k = __pyx_t_3;
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+      __pyx_cur_scope->__pyx_v_k = __pyx_t_2;
 
-      /* "/home/cdyer/cdec/python/src/hypergraph.pxi":84
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":87
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  *             for k in range(hypos.size()):
  *                 yield unicode(GetString(hypos[0][k].words).c_str(), 'utf8')             # <<<<<<<<<<<<<<
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  *             del hypos
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-      __Pyx_GIVEREF(((PyObject *)__pyx_t_4));
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":86
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":89
  *                 yield unicode(GetString(hypos[0][k].words).c_str(), 'utf8')
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@@ -9779,16 +9984,16 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_21generator7(__pyx_GeneratorObject
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     int __pyx_exc_lineno;
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-    __pyx_why = 0; goto __pyx_L7;
-    __pyx_L6: {
+    __pyx_why = 0; goto __pyx_L6;
+    __pyx_L5: {
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-      __Pyx_XDECREF(__pyx_t_5); __pyx_t_5 = 0;
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-    __pyx_L7:;
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@@ -9804,12 +10009,13 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_21generator7(__pyx_GeneratorObject
   PyErr_SetNone(PyExc_StopIteration);
   goto __pyx_L0;
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+  __Pyx_XDECREF(__pyx_t_3);
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@@ -9823,7 +10029,7 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_23sample_trees(PyObject *__pyx_v_s
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+    __pyx_v_n = __Pyx_PyInt_AsUnsignedInt(__pyx_arg_n); if (unlikely((__pyx_v_n == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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@@ -9836,12 +10042,12 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_23sample_trees(PyObject *__pyx_v_s
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":88
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":91
  *             del hypos
  * 
  *     def sample_trees(self, unsigned n):             # <<<<<<<<<<<<<<
  *        cdef vector[string]* trees = new vector[string]()
- *        if self.rng == NULL:
+ *        hypergraph.sample_trees(self.hg[0], n, self._rng(), trees)
  */
 
 static PyObject *__pyx_pf_5_cdec_10Hypergraph_22sample_trees(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self, unsigned int __pyx_v_n) {
@@ -9863,7 +10069,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_22sample_trees(struct __pyx_obj_5_
   __Pyx_GIVEREF((PyObject *)__pyx_cur_scope->__pyx_v_self);
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-    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_10Hypergraph_24generator8, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 88; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_10Hypergraph_24generator8, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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 {
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   PyObject *__pyx_r = NULL;
-  int __pyx_t_1;
-  size_t __pyx_t_2;
-  unsigned int __pyx_t_3;
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+  unsigned int __pyx_t_2;
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-    case 1: goto __pyx_L10_resume_from_yield;
+    case 1: goto __pyx_L9_resume_from_yield;
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-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 88; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":89
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":92
  * 
  *     def sample_trees(self, unsigned n):
  *        cdef vector[string]* trees = new vector[string]()             # <<<<<<<<<<<<<<
- *        if self.rng == NULL:
- *            self.rng = new MT19937()
+ *        hypergraph.sample_trees(self.hg[0], n, self._rng(), trees)
+ *        cdef unsigned k
  */
   __pyx_cur_scope->__pyx_v_trees = new std::vector<std::string>();
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":90
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":93
  *     def sample_trees(self, unsigned n):
  *        cdef vector[string]* trees = new vector[string]()
- *        if self.rng == NULL:             # <<<<<<<<<<<<<<
- *            self.rng = new MT19937()
- *        hypergraph.sample_trees(self.hg[0], n, self.rng, trees)
- */
-  __pyx_t_1 = (__pyx_cur_scope->__pyx_v_self->rng == NULL);
-  if (__pyx_t_1) {
-
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":91
- *        cdef vector[string]* trees = new vector[string]()
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- *            self.rng = new MT19937()             # <<<<<<<<<<<<<<
- *        hypergraph.sample_trees(self.hg[0], n, self.rng, trees)
- *        cdef unsigned k
- */
-    __pyx_cur_scope->__pyx_v_self->rng = new MT19937();
-    goto __pyx_L4;
-  }
-  __pyx_L4:;
-
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":92
- *        if self.rng == NULL:
- *            self.rng = new MT19937()
- *        hypergraph.sample_trees(self.hg[0], n, self.rng, trees)             # <<<<<<<<<<<<<<
+ *        hypergraph.sample_trees(self.hg[0], n, self._rng(), trees)             # <<<<<<<<<<<<<<
  *        cdef unsigned k
  *        try:
  */
-  HypergraphSampler::sample_trees((__pyx_cur_scope->__pyx_v_self->hg[0]), __pyx_cur_scope->__pyx_v_n, __pyx_cur_scope->__pyx_v_self->rng, __pyx_cur_scope->__pyx_v_trees);
+  HypergraphSampler::sample_trees((__pyx_cur_scope->__pyx_v_self->hg[0]), __pyx_cur_scope->__pyx_v_n, ((struct __pyx_vtabstruct_5_cdec_Hypergraph *)__pyx_cur_scope->__pyx_v_self->__pyx_vtab)->_rng(__pyx_cur_scope->__pyx_v_self), __pyx_cur_scope->__pyx_v_trees);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":94
- *        hypergraph.sample_trees(self.hg[0], n, self.rng, trees)
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":95
+ *        hypergraph.sample_trees(self.hg[0], n, self._rng(), trees)
  *        cdef unsigned k
  *        try:             # <<<<<<<<<<<<<<
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-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":95
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-      /* "/home/cdyer/cdec/python/src/hypergraph.pxi":96
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":98
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":99
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@@ -10035,12 +10218,13 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_24generator8(__pyx_GeneratorObject
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-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":100
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":101
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":101
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":102
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-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":103
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":104
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":105
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-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":106
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-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":107
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":108
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":108
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+  __pyx_t_2 = __pyx_PyFloat_AsDouble(__pyx_v_beam_alpha); if (unlikely((__pyx_t_2 == (double)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = __pyx_PyFloat_AsDouble(__pyx_v_density); if (unlikely((__pyx_t_3 == (double)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":109
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":110
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-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":110
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":113
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+  if (!(likely(PyString_CheckExact(((PyObject *)__pyx_t_1)))||(PyErr_Format(PyExc_TypeError, "Expected str, got %.200s", Py_TYPE(((PyObject *)__pyx_t_1))->tp_name), 0))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":114
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+  __pyx_t_1 = __Pyx_Globals(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -10348,15 +10532,15 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_29lattice(struct __pyx_obj_5_cdec_
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+  __pyx_t_2 = PyObject_Call(__pyx_builtin_eval, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":116
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":117
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":118
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-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":118
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":119
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     goto __pyx_L3;
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":119
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":120
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-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":120
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-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":122
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":123
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+    __pyx_t_1 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_16), ((PyObject *)Py_TYPE(__pyx_v_weights))); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 123; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 123; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_1 = PyObject_Call(__pyx_builtin_TypeError, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 123; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -10505,7 +10689,7 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_5edges_1__get__(PyObject *__pyx_v_
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 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":125
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":126
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+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_10Hypergraph_5edges_2generator9, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 126; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 126; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":127
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":128
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-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":128
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":129
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  *     property nodes:
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+    __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_HypergraphEdge)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_4 = ((struct __pyx_vtabstruct_5_cdec_HypergraphEdge *)((struct __pyx_obj_5_cdec_HypergraphEdge *)__pyx_t_3)->__pyx_vtab)->init(((struct __pyx_obj_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 = 129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -10604,7 +10788,7 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_5edges_2generator9(__pyx_Generator
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-    if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
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 }
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   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":131
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":132
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+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_10Hypergraph_5nodes_2generator10, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -10693,9 +10878,9 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_5nodes_2generator10(__pyx_Generato
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-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 131; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":133
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":134
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     __pyx_cur_scope->__pyx_v_i = __pyx_t_2;
 
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":134
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":135
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  *     property goal:
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-    __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_HypergraphNode)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_HypergraphNode)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 135; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    __pyx_t_4 = ((struct __pyx_vtabstruct_5_cdec_HypergraphNode *)((struct __pyx_obj_5_cdec_HypergraphNode *)__pyx_t_3)->__pyx_vtab)->init(((struct __pyx_obj_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 = 134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = ((struct __pyx_vtabstruct_5_cdec_HypergraphNode *)((struct __pyx_obj_5_cdec_HypergraphNode *)__pyx_t_3)->__pyx_vtab)->init(((struct __pyx_obj_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 = 135; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 135; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -10741,6 +10926,7 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_5nodes_2generator10(__pyx_Generato
   __pyx_L0:;
   __Pyx_XDECREF(__pyx_r);
   __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
   __Pyx_RefNannyFinishContext();
   return NULL;
 }
@@ -10756,7 +10942,7 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_4goal_1__get__(PyObject *__pyx_v_s
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":137
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":138
  * 
  *     property goal:
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@@ -10774,7 +10960,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_4goal___get__(struct __pyx_obj_5_c
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   __Pyx_RefNannySetupContext("__get__", 0);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":138
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":139
  *     property goal:
  *         def __get__(self):
  *             return HypergraphNode().init(self.hg, self.hg.GoalNode())             # <<<<<<<<<<<<<<
@@ -10782,9 +10968,9 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_4goal___get__(struct __pyx_obj_5_c
  *     property npaths:
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-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_HypergraphNode)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_HypergraphNode)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 139; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __pyx_t_2 = ((struct __pyx_vtabstruct_5_cdec_HypergraphNode *)((struct __pyx_obj_5_cdec_HypergraphNode *)__pyx_t_1)->__pyx_vtab)->init(((struct __pyx_obj_5_cdec_HypergraphNode *)__pyx_t_1), __pyx_v_self->hg, __pyx_v_self->hg->GoalNode()); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = ((struct __pyx_vtabstruct_5_cdec_HypergraphNode *)((struct __pyx_obj_5_cdec_HypergraphNode *)__pyx_t_1)->__pyx_vtab)->init(((struct __pyx_obj_5_cdec_HypergraphNode *)__pyx_t_1), __pyx_v_self->hg, __pyx_v_self->hg->GoalNode()); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 139; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -10815,7 +11001,7 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_6npaths_1__get__(PyObject *__pyx_v
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":141
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":142
  * 
  *     property npaths:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -10832,7 +11018,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_6npaths___get__(struct __pyx_obj_5
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   __Pyx_RefNannySetupContext("__get__", 0);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":142
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":143
  *     property npaths:
  *         def __get__(self):
  *             return self.hg.NumberOfPaths()             # <<<<<<<<<<<<<<
@@ -10840,7 +11026,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_6npaths___get__(struct __pyx_obj_5
  *     def inside_outside(self):
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   __Pyx_XDECREF(__pyx_r);
-  __pyx_t_1 = PyFloat_FromDouble(__pyx_v_self->hg->NumberOfPaths()); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 142; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyFloat_FromDouble(__pyx_v_self->hg->NumberOfPaths()); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -10869,7 +11055,7 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_34inside_outside(PyObject *__pyx_v
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":144
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":145
  *             return self.hg.NumberOfPaths()
  * 
  *     def inside_outside(self):             # <<<<<<<<<<<<<<
@@ -10893,7 +11079,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_33inside_outside(struct __pyx_obj_
   int __pyx_clineno = 0;
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":145
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":146
  * 
  *     def inside_outside(self):
  *         cdef FastSparseVector[prob_t]* result = new FastSparseVector[prob_t]()             # <<<<<<<<<<<<<<
@@ -10902,7 +11088,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_33inside_outside(struct __pyx_obj_
  */
   __pyx_v_result = new FastSparseVector<prob_t>();
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":146
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":147
  *     def inside_outside(self):
  *         cdef FastSparseVector[prob_t]* result = new FastSparseVector[prob_t]()
  *         cdef prob_t z = hypergraph.InsideOutside(self.hg[0], result)             # <<<<<<<<<<<<<<
@@ -10911,7 +11097,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_33inside_outside(struct __pyx_obj_
  */
   __pyx_v_z = InsideOutside<prob_t, EdgeProb, SparseVector<prob_t>, EdgeFeaturesAndProbWeightFunction>((__pyx_v_self->hg[0]), __pyx_v_result);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":147
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":148
  *         cdef FastSparseVector[prob_t]* result = new FastSparseVector[prob_t]()
  *         cdef prob_t z = hypergraph.InsideOutside(self.hg[0], result)
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@@ -10920,20 +11106,20 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_33inside_outside(struct __pyx_obj_
  */
   (__pyx_v_result[0]) /= __pyx_v_z;
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":148
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":149
  *         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)
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-  __pyx_t_1 = __Pyx_tp_new(((PyObject*)__pyx_ptype_5_cdec_SparseVector)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_tp_new(((PyObject*)__pyx_ptype_5_cdec_SparseVector)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 149; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
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+  if (!(likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_5_cdec_SparseVector)))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 149; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_vector = ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":149
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":150
  *         result[0] /= z
  *         cdef SparseVector vector = SparseVector.__new__(SparseVector)
  *         vector.vector = new FastSparseVector[double]()             # <<<<<<<<<<<<<<
@@ -10942,7 +11128,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_33inside_outside(struct __pyx_obj_
  */
   __pyx_v_vector->vector = new FastSparseVector<double>();
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":150
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":151
  *         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)             # <<<<<<<<<<<<<<
@@ -10951,7 +11137,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_33inside_outside(struct __pyx_obj_
  */
   __pyx_v_it = new FastSparseVector<prob_t>::const_iterator((__pyx_v_result[0]), 0);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":152
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":153
  *         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()):             # <<<<<<<<<<<<<<
@@ -10962,7 +11148,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_33inside_outside(struct __pyx_obj_
   for (__pyx_t_3 = 0; __pyx_t_3 < __pyx_t_2; __pyx_t_3+=1) {
     __pyx_v_i = __pyx_t_3;
 
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":153
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":154
  *         cdef unsigned i
  *         for i in range(result.size()):
  *             vector.vector.set_value(it[0].ptr().first, log(it[0].ptr().second))             # <<<<<<<<<<<<<<
@@ -10971,7 +11157,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_33inside_outside(struct __pyx_obj_
  */
     __pyx_v_vector->vector->set_value((__pyx_v_it[0]).operator->()->first, log((__pyx_v_it[0]).operator->()->second));
 
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":154
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":155
  *         for i in range(result.size()):
  *             vector.vector.set_value(it[0].ptr().first, log(it[0].ptr().second))
  *             pinc(it[0]) # ++it             # <<<<<<<<<<<<<<
@@ -10981,7 +11167,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_33inside_outside(struct __pyx_obj_
     (++(__pyx_v_it[0]));
   }
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":155
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":156
  *             vector.vector.set_value(it[0].ptr().first, log(it[0].ptr().second))
  *             pinc(it[0]) # ++it
  *         del it             # <<<<<<<<<<<<<<
@@ -10990,7 +11176,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_33inside_outside(struct __pyx_obj_
  */
   delete __pyx_v_it;
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":156
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":157
  *             pinc(it[0]) # ++it
  *         del it
  *         del result             # <<<<<<<<<<<<<<
@@ -10999,7 +11185,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_33inside_outside(struct __pyx_obj_
  */
   delete __pyx_v_result;
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":157
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":158
  *         del it
  *         del result
  *         return vector             # <<<<<<<<<<<<<<
@@ -11024,7 +11210,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_33inside_outside(struct __pyx_obj_
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":164
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":165
  *     cdef public TRule trule
  * 
  *     cdef init(self, hypergraph.Hypergraph* hg, unsigned i):             # <<<<<<<<<<<<<<
@@ -11041,7 +11227,7 @@ static PyObject *__pyx_f_5_cdec_14HypergraphEdge_init(struct __pyx_obj_5_cdec_Hy
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("init", 0);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":165
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":166
  * 
  *     cdef init(self, hypergraph.Hypergraph* hg, unsigned i):
  *         self.hg = hg             # <<<<<<<<<<<<<<
@@ -11050,7 +11236,7 @@ static PyObject *__pyx_f_5_cdec_14HypergraphEdge_init(struct __pyx_obj_5_cdec_Hy
  */
   __pyx_v_self->hg = __pyx_v_hg;
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":166
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":167
  *     cdef init(self, hypergraph.Hypergraph* hg, unsigned i):
  *         self.hg = hg
  *         self.edge = &hg.edges_[i]             # <<<<<<<<<<<<<<
@@ -11059,23 +11245,23 @@ static PyObject *__pyx_f_5_cdec_14HypergraphEdge_init(struct __pyx_obj_5_cdec_Hy
  */
   __pyx_v_self->edge = (&(__pyx_v_hg->edges_[__pyx_v_i]));
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":167
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":168
  *         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(((PyObject*)__pyx_ptype_5_cdec_TRule)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 167; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_tp_new(((PyObject*)__pyx_ptype_5_cdec_TRule)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 168; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  if (!(likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_5_cdec_TRule)))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 167; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (!(likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_5_cdec_TRule)))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 168; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":168
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":169
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  *         self.trule = TRule.__new__(TRule)
  *         self.trule.rule = new shared_ptr[grammar.TRule](self.edge.rule_)             # <<<<<<<<<<<<<<
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   __pyx_v_self->trule->rule = new boost::shared_ptr<TRule>(__pyx_v_self->edge->rule_);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":169
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":170
  *         self.trule = TRule.__new__(TRule)
  *         self.trule.rule = new shared_ptr[grammar.TRule](self.edge.rule_)
  *         return self             # <<<<<<<<<<<<<<
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 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":171
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":172
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  * 
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":172
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":173
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  *     def __len__(self):
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   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":175
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":176
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  *     property head_node:
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@@ -11177,7 +11363,7 @@ static PyObject *__pyx_pf_5_cdec_14HypergraphEdge_9head_node___get__(struct __py
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   __Pyx_RefNannySetupContext("__get__", 0);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":176
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":177
  *     property head_node:
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@@ -11185,9 +11371,9 @@ static PyObject *__pyx_pf_5_cdec_14HypergraphEdge_9head_node___get__(struct __py
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+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_HypergraphNode)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 177; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = ((struct __pyx_vtabstruct_5_cdec_HypergraphNode *)((struct __pyx_obj_5_cdec_HypergraphNode *)__pyx_t_1)->__pyx_vtab)->init(((struct __pyx_obj_5_cdec_HypergraphNode *)__pyx_t_1), __pyx_v_self->hg, __pyx_v_self->edge->head_node_); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 176; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = ((struct __pyx_vtabstruct_5_cdec_HypergraphNode *)((struct __pyx_obj_5_cdec_HypergraphNode *)__pyx_t_1)->__pyx_vtab)->init(((struct __pyx_obj_5_cdec_HypergraphNode *)__pyx_t_1), __pyx_v_self->hg, __pyx_v_self->edge->head_node_); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 177; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":179
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":180
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  *     property tail_nodes:
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-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 179; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 180; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":181
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-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":182
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":183
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-    if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 182; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 183; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":185
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":186
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":186
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":187
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+  __pyx_t_1 = PyInt_FromLong(__pyx_v_self->edge->i_); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 187; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_2 = PyInt_FromLong(__pyx_v_self->edge->j_); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 187; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":189
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":190
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  *     property feature_values:
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":190
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":191
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+  __pyx_t_1 = __Pyx_tp_new(((PyObject*)__pyx_ptype_5_cdec_SparseVector)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 191; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":191
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":192
  *         def __get__(self):
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":192
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":193
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   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":195
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":196
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  *     property prob:
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":196
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":197
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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 = 197; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_x), __pyx_ptype_5_cdec_HypergraphEdge, 1, "x", 0))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 199; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_y), __pyx_ptype_5_cdec_HypergraphEdge, 1, "y", 0))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 199; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -11548,7 +11735,7 @@ static PyObject *__pyx_pw_5_cdec_14HypergraphEdge_3__richcmp__(PyObject *__pyx_v
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 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":198
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":201
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":202
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   switch (__pyx_v_op) {
 
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":199
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":200
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     case 2:
 
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":200
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":201
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-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":201
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":202
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     case 3:
 
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":202
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":203
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+    __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 203; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_1 = __Pyx_PyBool_FromLong((!__pyx_t_2)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 203; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -11628,18 +11815,18 @@ static PyObject *__pyx_pf_5_cdec_14HypergraphEdge_2__richcmp__(struct __pyx_obj_
     break;
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":203
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":204
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-  {__pyx_filename = __pyx_f[3]; __pyx_lineno = 203; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  {__pyx_filename = __pyx_f[3]; __pyx_lineno = 204; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
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 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":162
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 }
 
-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":209
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":210
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":211
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":212
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":213
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-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":215
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":216
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-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 215; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":217
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-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":218
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-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":221
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":223
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-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":224
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-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":227
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":228
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-/* "/home/cdyer/cdec/python/src/hypergraph.pxi":231
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-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":232
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-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":233
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   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__richcmp__", 0);
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":238
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":239
  *         if op == 2: # ==
  *             return x.node == y.node
  *         elif op == 3: # !=             # <<<<<<<<<<<<<<
@@ -12223,7 +12412,7 @@ static PyObject *__pyx_pf_5_cdec_14HypergraphNode___richcmp__(struct __pyx_obj_5
  */
   switch (__pyx_v_op) {
 
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":236
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":237
  * 
  *     def __richcmp__(HypergraphNode x, HypergraphNode y, int op):
  *         if op == 2: # ==             # <<<<<<<<<<<<<<
@@ -12232,7 +12421,7 @@ static PyObject *__pyx_pf_5_cdec_14HypergraphNode___richcmp__(struct __pyx_obj_5
  */
     case 2:
 
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":237
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":238
  *     def __richcmp__(HypergraphNode x, HypergraphNode y, int op):
  *         if op == 2: # ==
  *             return x.node == y.node             # <<<<<<<<<<<<<<
@@ -12240,14 +12429,14 @@ static PyObject *__pyx_pf_5_cdec_14HypergraphNode___richcmp__(struct __pyx_obj_5
  *             return not (x == y)
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     __Pyx_XDECREF(__pyx_r);
-    __pyx_t_1 = __Pyx_PyBool_FromLong((__pyx_v_x->node == __pyx_v_y->node)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 237; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = __Pyx_PyBool_FromLong((__pyx_v_x->node == __pyx_v_y->node)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 238; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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     __pyx_r = __pyx_t_1;
     __pyx_t_1 = 0;
     goto __pyx_L0;
     break;
 
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":238
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":239
  *         if op == 2: # ==
  *             return x.node == y.node
  *         elif op == 3: # !=             # <<<<<<<<<<<<<<
@@ -12256,18 +12445,18 @@ static PyObject *__pyx_pf_5_cdec_14HypergraphNode___richcmp__(struct __pyx_obj_5
  */
     case 3:
 
-    /* "/home/cdyer/cdec/python/src/hypergraph.pxi":239
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":240
  *             return x.node == y.node
  *         elif op == 3: # !=
  *             return not (x == y)             # <<<<<<<<<<<<<<
  *         raise NotImplemented('comparison not implemented for HypergraphNode')
  */
     __Pyx_XDECREF(__pyx_r);
-    __pyx_t_1 = PyObject_RichCompare(((PyObject *)__pyx_v_x), ((PyObject *)__pyx_v_y), Py_EQ); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 239; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyObject_RichCompare(((PyObject *)__pyx_v_x), ((PyObject *)__pyx_v_y), Py_EQ); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 240; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
-    __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 239; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 240; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-    __pyx_t_1 = __Pyx_PyBool_FromLong((!__pyx_t_2)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 239; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = __Pyx_PyBool_FromLong((!__pyx_t_2)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 240; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
     __pyx_r = __pyx_t_1;
     __pyx_t_1 = 0;
@@ -12275,16 +12464,16 @@ static PyObject *__pyx_pf_5_cdec_14HypergraphNode___richcmp__(struct __pyx_obj_5
     break;
   }
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":240
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":241
  *         elif op == 3: # !=
  *             return not (x == y)
  *         raise NotImplemented('comparison not implemented for HypergraphNode')             # <<<<<<<<<<<<<<
  */
-  __pyx_t_1 = PyObject_Call(__pyx_builtin_NotImplemented, ((PyObject *)__pyx_k_tuple_20), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 240; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(__pyx_builtin_NotImplemented, ((PyObject *)__pyx_k_tuple_20), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 241; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_Raise(__pyx_t_1, 0, 0, 0);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-  {__pyx_filename = __pyx_f[3]; __pyx_lineno = 240; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  {__pyx_filename = __pyx_f[3]; __pyx_lineno = 241; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
   __pyx_r = Py_None; __Pyx_INCREF(Py_None);
   goto __pyx_L0;
@@ -12302,11 +12491,11 @@ static PyObject *__pyx_pf_5_cdec_14HypergraphNode___richcmp__(struct __pyx_obj_5
 static int __pyx_pw_5_cdec_7Lattice_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
 static int __pyx_pw_5_cdec_7Lattice_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
   PyObject *__pyx_v_inp = 0;
-  static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__inp,0};
   int __pyx_r;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__cinit__ (wrapper)", 0);
   {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__inp,0};
     PyObject* values[1] = {0};
     if (unlikely(__pyx_kwds)) {
       Py_ssize_t kw_args;
@@ -12319,8 +12508,7 @@ static int __pyx_pw_5_cdec_7Lattice_1__cinit__(PyObject *__pyx_v_self, PyObject
       kw_args = PyDict_Size(__pyx_kwds);
       switch (pos_args) {
         case  0:
-        values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__inp);
-        if (likely(values[0])) kw_args--;
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__inp)) != 0)) kw_args--;
         else goto __pyx_L5_argtuple_error;
       }
       if (unlikely(kw_args > 0)) {
@@ -12346,7 +12534,7 @@ static int __pyx_pw_5_cdec_7Lattice_1__cinit__(PyObject *__pyx_v_self, PyObject
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/lattice.pxi":6
+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":6
  *     cdef lattice.Lattice* lattice
  * 
  *     def __cinit__(self, inp):             # <<<<<<<<<<<<<<
@@ -12373,7 +12561,7 @@ static int __pyx_pf_5_cdec_7Lattice___cinit__(struct __pyx_obj_5_cdec_Lattice *_
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   __Pyx_INCREF(__pyx_v_inp);
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":7
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":7
  * 
  *     def __cinit__(self, inp):
  *         if isinstance(inp, tuple):             # <<<<<<<<<<<<<<
@@ -12386,7 +12574,7 @@ static int __pyx_pf_5_cdec_7Lattice___cinit__(struct __pyx_obj_5_cdec_Lattice *_
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   if (__pyx_t_2) {
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":8
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":8
  *     def __cinit__(self, inp):
  *         if isinstance(inp, tuple):
  *             self.lattice = new lattice.Lattice(len(inp))             # <<<<<<<<<<<<<<
@@ -12396,7 +12584,7 @@ static int __pyx_pf_5_cdec_7Lattice___cinit__(struct __pyx_obj_5_cdec_Lattice *_
     __pyx_t_3 = PyObject_Length(__pyx_v_inp); if (unlikely(__pyx_t_3 == -1)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 8; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __pyx_v_self->lattice = new Lattice(__pyx_t_3);
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":9
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":9
  *         if isinstance(inp, tuple):
  *             self.lattice = new lattice.Lattice(len(inp))
  *             for i, arcs in enumerate(inp):             # <<<<<<<<<<<<<<
@@ -12416,10 +12604,18 @@ static int __pyx_pf_5_cdec_7Lattice___cinit__(struct __pyx_obj_5_cdec_Lattice *_
     for (;;) {
       if (!__pyx_t_5 && PyList_CheckExact(__pyx_t_4)) {
         if (__pyx_t_3 >= PyList_GET_SIZE(__pyx_t_4)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
         __pyx_t_6 = PyList_GET_ITEM(__pyx_t_4, __pyx_t_3); __Pyx_INCREF(__pyx_t_6); __pyx_t_3++;
+        #else
+        __pyx_t_6 = PySequence_ITEM(__pyx_t_4, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 9; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+        #endif
       } else if (!__pyx_t_5 && PyTuple_CheckExact(__pyx_t_4)) {
         if (__pyx_t_3 >= PyTuple_GET_SIZE(__pyx_t_4)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
         __pyx_t_6 = PyTuple_GET_ITEM(__pyx_t_4, __pyx_t_3); __Pyx_INCREF(__pyx_t_6); __pyx_t_3++;
+        #else
+        __pyx_t_6 = PySequence_ITEM(__pyx_t_4, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 9; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+        #endif
       } else {
         __pyx_t_6 = __pyx_t_5(__pyx_t_4);
         if (unlikely(!__pyx_t_6)) {
@@ -12443,7 +12639,7 @@ static int __pyx_pf_5_cdec_7Lattice___cinit__(struct __pyx_obj_5_cdec_Lattice *_
       __pyx_t_1 = __pyx_t_6;
       __pyx_t_6 = 0;
 
-      /* "/home/cdyer/cdec/python/src/lattice.pxi":10
+      /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":10
  *             self.lattice = new lattice.Lattice(len(inp))
  *             for i, arcs in enumerate(inp):
  *                 self[i] = arcs             # <<<<<<<<<<<<<<
@@ -12458,7 +12654,7 @@ static int __pyx_pf_5_cdec_7Lattice___cinit__(struct __pyx_obj_5_cdec_Lattice *_
   }
   /*else*/ {
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":12
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":12
  *                 self[i] = arcs
  *         else:
  *             if isinstance(inp, unicode):             # <<<<<<<<<<<<<<
@@ -12471,7 +12667,7 @@ static int __pyx_pf_5_cdec_7Lattice___cinit__(struct __pyx_obj_5_cdec_Lattice *_
     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
     if (__pyx_t_2) {
 
-      /* "/home/cdyer/cdec/python/src/lattice.pxi":13
+      /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":13
  *         else:
  *             if isinstance(inp, unicode):
  *                 inp = inp.encode('utf8')             # <<<<<<<<<<<<<<
@@ -12490,7 +12686,7 @@ static int __pyx_pf_5_cdec_7Lattice___cinit__(struct __pyx_obj_5_cdec_Lattice *_
     }
     __pyx_L6:;
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":14
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":14
  *             if isinstance(inp, unicode):
  *                 inp = inp.encode('utf8')
  *             if not isinstance(inp, str):             # <<<<<<<<<<<<<<
@@ -12504,7 +12700,7 @@ static int __pyx_pf_5_cdec_7Lattice___cinit__(struct __pyx_obj_5_cdec_Lattice *_
     __pyx_t_7 = (!__pyx_t_2);
     if (__pyx_t_7) {
 
-      /* "/home/cdyer/cdec/python/src/lattice.pxi":15
+      /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":15
  *                 inp = inp.encode('utf8')
  *             if not isinstance(inp, str):
  *                 raise TypeError('Cannot create lattice from %s' % type(inp))             # <<<<<<<<<<<<<<
@@ -12528,7 +12724,7 @@ static int __pyx_pf_5_cdec_7Lattice___cinit__(struct __pyx_obj_5_cdec_Lattice *_
     }
     __pyx_L7:;
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":16
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":16
  *             if not isinstance(inp, str):
  *                 raise TypeError('Cannot create lattice from %s' % type(inp))
  *             self.lattice = new lattice.Lattice()             # <<<<<<<<<<<<<<
@@ -12537,7 +12733,7 @@ static int __pyx_pf_5_cdec_7Lattice___cinit__(struct __pyx_obj_5_cdec_Lattice *_
  */
     __pyx_v_self->lattice = new Lattice();
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":17
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":17
  *                 raise TypeError('Cannot create lattice from %s' % type(inp))
  *             self.lattice = new lattice.Lattice()
  *             lattice.ConvertTextToLattice(string(<char *>inp), self.lattice)             # <<<<<<<<<<<<<<
@@ -12574,7 +12770,7 @@ static void __pyx_pw_5_cdec_7Lattice_3__dealloc__(PyObject *__pyx_v_self) {
   __Pyx_RefNannyFinishContext();
 }
 
-/* "/home/cdyer/cdec/python/src/lattice.pxi":19
+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":19
  *             lattice.ConvertTextToLattice(string(<char *>inp), self.lattice)
  * 
  *     def __dealloc__(self):             # <<<<<<<<<<<<<<
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   __Pyx_RefNannySetupContext("__dealloc__", 0);
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":20
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":20
  * 
  *     def __dealloc__(self):
  *         del self.lattice             # <<<<<<<<<<<<<<
@@ -12619,7 +12815,7 @@ static PyObject *__pyx_pw_5_cdec_7Lattice_5__getitem__(PyObject *__pyx_v_self, P
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/lattice.pxi":22
+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":22
  *         del self.lattice
  * 
  *     def __getitem__(self, int index):             # <<<<<<<<<<<<<<
@@ -12649,7 +12845,7 @@ static PyObject *__pyx_pf_5_cdec_7Lattice_4__getitem__(struct __pyx_obj_5_cdec_L
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__getitem__", 0);
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":23
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":23
  * 
  *     def __getitem__(self, int index):
  *         if not 0 <= index < len(self):             # <<<<<<<<<<<<<<
@@ -12664,7 +12860,7 @@ static PyObject *__pyx_pf_5_cdec_7Lattice_4__getitem__(struct __pyx_obj_5_cdec_L
   __pyx_t_3 = (!__pyx_t_1);
   if (__pyx_t_3) {
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":24
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":24
  *     def __getitem__(self, int index):
  *         if not 0 <= index < len(self):
  *             raise IndexError('lattice index out of range')             # <<<<<<<<<<<<<<
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   }
   __pyx_L3:;
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":25
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":25
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  *             raise IndexError('lattice index out of range')
  *         arcs = []             # <<<<<<<<<<<<<<
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   __pyx_v_arcs = __pyx_t_4;
   __pyx_t_4 = 0;
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":26
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":26
  *             raise IndexError('lattice index out of range')
  *         arcs = []
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@@ -12701,7 +12897,7 @@ static PyObject *__pyx_pf_5_cdec_7Lattice_4__getitem__(struct __pyx_obj_5_cdec_L
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   __pyx_v_arc_vector = ((__pyx_v_self->lattice[0])[__pyx_v_index]);
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":29
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":29
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  *         cdef unsigned i
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     __pyx_v_i = __pyx_t_6;
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":30
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":30
  *         cdef unsigned i
  *         for i in range(arc_vector.size()):
  *             arc = &arc_vector[i]             # <<<<<<<<<<<<<<
@@ -12721,7 +12917,7 @@ static PyObject *__pyx_pf_5_cdec_7Lattice_4__getitem__(struct __pyx_obj_5_cdec_L
  */
     __pyx_v_arc = (&(__pyx_v_arc_vector[__pyx_v_i]));
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":31
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":31
  *         for i in range(arc_vector.size()):
  *             arc = &arc_vector[i]
  *             label = unicode(TDConvert(arc.label), 'utf8')             # <<<<<<<<<<<<<<
@@ -12745,7 +12941,7 @@ static PyObject *__pyx_pf_5_cdec_7Lattice_4__getitem__(struct __pyx_obj_5_cdec_L
     __pyx_v_label = ((PyObject*)__pyx_t_4);
     __pyx_t_4 = 0;
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":32
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":32
  *             arc = &arc_vector[i]
  *             label = unicode(TDConvert(arc.label), 'utf8')
  *             arcs.append((label, arc.cost, arc.dist2next))             # <<<<<<<<<<<<<<
@@ -12771,7 +12967,7 @@ static PyObject *__pyx_pf_5_cdec_7Lattice_4__getitem__(struct __pyx_obj_5_cdec_L
     __Pyx_DECREF(((PyObject *)__pyx_t_8)); __pyx_t_8 = 0;
   }
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":33
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":33
  *             label = unicode(TDConvert(arc.label), 'utf8')
  *             arcs.append((label, arc.cost, arc.dist2next))
  *         return tuple(arcs)             # <<<<<<<<<<<<<<
@@ -12827,7 +13023,7 @@ static int __pyx_pw_5_cdec_7Lattice_7__setitem__(PyObject *__pyx_v_self, PyObjec
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/lattice.pxi":35
+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":35
  *         return tuple(arcs)
  * 
  *     def __setitem__(self, int index, tuple arcs):             # <<<<<<<<<<<<<<
@@ -12860,7 +13056,7 @@ static int __pyx_pf_5_cdec_7Lattice_6__setitem__(struct __pyx_obj_5_cdec_Lattice
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   __Pyx_RefNannySetupContext("__setitem__", 0);
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":36
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":36
  * 
  *     def __setitem__(self, int index, tuple arcs):
  *         if not 0 <= index < len(self):             # <<<<<<<<<<<<<<
@@ -12875,7 +13071,7 @@ static int __pyx_pf_5_cdec_7Lattice_6__setitem__(struct __pyx_obj_5_cdec_Lattice
   __pyx_t_3 = (!__pyx_t_1);
   if (__pyx_t_3) {
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":37
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":37
  *     def __setitem__(self, int index, tuple arcs):
  *         if not 0 <= index < len(self):
  *             raise IndexError('lattice index out of range')             # <<<<<<<<<<<<<<
@@ -12891,7 +13087,7 @@ static int __pyx_pf_5_cdec_7Lattice_6__setitem__(struct __pyx_obj_5_cdec_Lattice
   }
   __pyx_L3:;
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":39
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":39
  *             raise IndexError('lattice index out of range')
  *         cdef lattice.LatticeArc* arc
  *         for (label, cost, dist2next) in arcs:             # <<<<<<<<<<<<<<
@@ -12899,29 +13095,35 @@ static int __pyx_pf_5_cdec_7Lattice_6__setitem__(struct __pyx_obj_5_cdec_Lattice
  *                 label = label.encode('utf8')
  */
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-    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not iterable"); {__pyx_filename = __pyx_f[4]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;} 
+    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not iterable");
+    {__pyx_filename = __pyx_f[4]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
   __pyx_t_4 = ((PyObject *)__pyx_v_arcs); __Pyx_INCREF(__pyx_t_4); __pyx_t_2 = 0;
   for (;;) {
     if (__pyx_t_2 >= PyTuple_GET_SIZE(__pyx_t_4)) break;
+    #if CYTHON_COMPILING_IN_CPYTHON
     __pyx_t_5 = PyTuple_GET_ITEM(__pyx_t_4, __pyx_t_2); __Pyx_INCREF(__pyx_t_5); __pyx_t_2++;
+    #else
+    __pyx_t_5 = PySequence_ITEM(__pyx_t_4, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+    #endif
     if ((likely(PyTuple_CheckExact(__pyx_t_5))) || (PyList_CheckExact(__pyx_t_5))) {
       PyObject* sequence = __pyx_t_5;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      Py_ssize_t size = Py_SIZE(sequence);
+      #else
+      Py_ssize_t size = PySequence_Size(sequence);
+      #endif
+      if (unlikely(size != 3)) {
+        if (size > 3) __Pyx_RaiseTooManyValuesError(3);
+        else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
+        {__pyx_filename = __pyx_f[4]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      }
+      #if CYTHON_COMPILING_IN_CPYTHON
       if (likely(PyTuple_CheckExact(sequence))) {
-        if (unlikely(PyTuple_GET_SIZE(sequence) != 3)) {
-          if (PyTuple_GET_SIZE(sequence) > 3) __Pyx_RaiseTooManyValuesError(3);
-          else __Pyx_RaiseNeedMoreValuesError(PyTuple_GET_SIZE(sequence));
-          {__pyx_filename = __pyx_f[4]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-        }
         __pyx_t_6 = PyTuple_GET_ITEM(sequence, 0); 
         __pyx_t_7 = PyTuple_GET_ITEM(sequence, 1); 
         __pyx_t_8 = PyTuple_GET_ITEM(sequence, 2); 
       } else {
-        if (unlikely(PyList_GET_SIZE(sequence) != 3)) {
-          if (PyList_GET_SIZE(sequence) > 3) __Pyx_RaiseTooManyValuesError(3);
-          else __Pyx_RaiseNeedMoreValuesError(PyList_GET_SIZE(sequence));
-          {__pyx_filename = __pyx_f[4]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-        }
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         __pyx_t_7 = PyList_GET_ITEM(sequence, 1); 
         __pyx_t_8 = PyList_GET_ITEM(sequence, 2); 
@@ -12929,8 +13131,14 @@ static int __pyx_pf_5_cdec_7Lattice_6__setitem__(struct __pyx_obj_5_cdec_Lattice
       __Pyx_INCREF(__pyx_t_6);
       __Pyx_INCREF(__pyx_t_7);
       __Pyx_INCREF(__pyx_t_8);
+      #else
+      __pyx_t_6 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = PySequence_ITEM(sequence, 2); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-    } else {
+    } else
+    {
       Py_ssize_t index = -1;
       __pyx_t_9 = PyObject_GetIter(__pyx_t_5); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -12943,12 +13151,13 @@ static int __pyx_pf_5_cdec_7Lattice_6__setitem__(struct __pyx_obj_5_cdec_Lattice
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+      __pyx_t_10 = NULL;
       __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
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       __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
-      if (PyErr_Occurred() && PyErr_ExceptionMatches(PyExc_StopIteration)) PyErr_Clear();
-      if (!PyErr_Occurred()) __Pyx_RaiseNeedMoreValuesError(index);
+      __pyx_t_10 = NULL;
+      if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
       {__pyx_filename = __pyx_f[4]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -12962,7 +13171,7 @@ static int __pyx_pf_5_cdec_7Lattice_6__setitem__(struct __pyx_obj_5_cdec_Lattice
     __pyx_v_dist2next = __pyx_t_8;
     __pyx_t_8 = 0;
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":40
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":40
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@@ -12975,7 +13184,7 @@ static int __pyx_pf_5_cdec_7Lattice_6__setitem__(struct __pyx_obj_5_cdec_Lattice
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     if (__pyx_t_3) {
 
-      /* "/home/cdyer/cdec/python/src/lattice.pxi":41
+      /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":41
  *         for (label, cost, dist2next) in arcs:
  *             if isinstance(label, unicode):
  *                 label = label.encode('utf8')             # <<<<<<<<<<<<<<
@@ -12994,7 +13203,7 @@ static int __pyx_pf_5_cdec_7Lattice_6__setitem__(struct __pyx_obj_5_cdec_Lattice
     }
     __pyx_L8:;
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":42
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":42
  *             if isinstance(label, unicode):
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  *             arc = new lattice.LatticeArc(TDConvert(<char *>label), cost, dist2next)             # <<<<<<<<<<<<<<
@@ -13006,7 +13215,7 @@ static int __pyx_pf_5_cdec_7Lattice_6__setitem__(struct __pyx_obj_5_cdec_Lattice
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     __pyx_v_arc = new LatticeArc(TD::Convert(((char *)__pyx_t_11)), __pyx_t_12, __pyx_t_13);
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":43
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":43
  *                 label = label.encode('utf8')
  *             arc = new lattice.LatticeArc(TDConvert(<char *>label), cost, dist2next)
  *             self.lattice[0][index].push_back(arc[0])             # <<<<<<<<<<<<<<
@@ -13015,7 +13224,7 @@ static int __pyx_pf_5_cdec_7Lattice_6__setitem__(struct __pyx_obj_5_cdec_Lattice
  */
     ((__pyx_v_self->lattice[0])[__pyx_v_index]).push_back((__pyx_v_arc[0]));
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":44
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":44
  *             arc = new lattice.LatticeArc(TDConvert(<char *>label), cost, dist2next)
  *             self.lattice[0][index].push_back(arc[0])
  *             del arc             # <<<<<<<<<<<<<<
@@ -13056,7 +13265,7 @@ static Py_ssize_t __pyx_pw_5_cdec_7Lattice_9__len__(PyObject *__pyx_v_self) {
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/lattice.pxi":46
+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":46
  *             del arc
  * 
  *     def __len__(self):             # <<<<<<<<<<<<<<
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   __Pyx_RefNannySetupContext("__len__", 0);
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":47
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":47
  * 
  *     def __len__(self):
  *         return self.lattice.size()             # <<<<<<<<<<<<<<
@@ -13096,7 +13305,7 @@ static PyObject *__pyx_pw_5_cdec_7Lattice_11__str__(PyObject *__pyx_v_self) {
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/lattice.pxi":49
+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":49
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  * 
  *     def __str__(self):             # <<<<<<<<<<<<<<
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   __Pyx_RefNannySetupContext("__str__", 0);
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":50
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":50
  * 
  *     def __str__(self):
  *         return hypergraph.AsPLF(self.lattice[0], True).c_str()             # <<<<<<<<<<<<<<
@@ -13151,7 +13360,7 @@ static PyObject *__pyx_pw_5_cdec_7Lattice_13__iter__(PyObject *__pyx_v_self) {
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/lattice.pxi":52
+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":52
  *         return hypergraph.AsPLF(self.lattice[0], True).c_str()
  * 
  *     def __iter__(self):             # <<<<<<<<<<<<<<
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-  /* "/home/cdyer/cdec/python/src/lattice.pxi":54
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":54
  *     def __iter__(self):
  *         cdef unsigned i
  *         for i in range(len(self)):             # <<<<<<<<<<<<<<
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     __pyx_cur_scope->__pyx_v_i = __pyx_t_2;
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":55
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":55
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  *         for i in range(len(self)):
  *             yield self[i]             # <<<<<<<<<<<<<<
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   __pyx_L0:;
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   __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
   __Pyx_RefNannyFinishContext();
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 }
@@ -13279,13 +13489,12 @@ static PyObject *__pyx_pw_5_cdec_7Lattice_5todot_1lines(PyObject *__pyx_self, CY
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 }
 
-/* "/home/cdyer/cdec/python/src/lattice.pxi":58
+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":58
  * 
  *     def todot(self):
  *         def lines():             # <<<<<<<<<<<<<<
@@ -13362,7 +13571,7 @@ static PyObject *__pyx_gb_5_cdec_7Lattice_5todot_2generator20(__pyx_GeneratorObj
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-  /* "/home/cdyer/cdec/python/src/lattice.pxi":59
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":59
  *     def todot(self):
  *         def lines():
  *             yield 'digraph lattice {'             # <<<<<<<<<<<<<<
@@ -13379,7 +13588,7 @@ static PyObject *__pyx_gb_5_cdec_7Lattice_5todot_2generator20(__pyx_GeneratorObj
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-  /* "/home/cdyer/cdec/python/src/lattice.pxi":60
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":60
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  *             yield 'digraph lattice {'
  *             yield 'rankdir = LR;'             # <<<<<<<<<<<<<<
@@ -13396,7 +13605,7 @@ static PyObject *__pyx_gb_5_cdec_7Lattice_5todot_2generator20(__pyx_GeneratorObj
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-  /* "/home/cdyer/cdec/python/src/lattice.pxi":61
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":61
  *             yield 'digraph lattice {'
  *             yield 'rankdir = LR;'
  *             yield 'node [shape=circle];'             # <<<<<<<<<<<<<<
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-  /* "/home/cdyer/cdec/python/src/lattice.pxi":62
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":62
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  *             yield 'node [shape=circle];'
  *             for i in range(len(self)):             # <<<<<<<<<<<<<<
@@ -13447,10 +13656,18 @@ static PyObject *__pyx_gb_5_cdec_7Lattice_5todot_2generator20(__pyx_GeneratorObj
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     if (!__pyx_t_4 && PyList_CheckExact(__pyx_t_3)) {
       if (__pyx_t_2 >= PyList_GET_SIZE(__pyx_t_3)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_1 = PyList_GET_ITEM(__pyx_t_3, __pyx_t_2); __Pyx_INCREF(__pyx_t_1); __pyx_t_2++;
+      #else
+      __pyx_t_1 = PySequence_ITEM(__pyx_t_3, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else if (!__pyx_t_4 && PyTuple_CheckExact(__pyx_t_3)) {
       if (__pyx_t_2 >= PyTuple_GET_SIZE(__pyx_t_3)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_1 = PyTuple_GET_ITEM(__pyx_t_3, __pyx_t_2); __Pyx_INCREF(__pyx_t_1); __pyx_t_2++;
+      #else
+      __pyx_t_1 = PySequence_ITEM(__pyx_t_3, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else {
       __pyx_t_1 = __pyx_t_4(__pyx_t_3);
       if (unlikely(!__pyx_t_1)) {
@@ -13468,7 +13685,7 @@ static PyObject *__pyx_gb_5_cdec_7Lattice_5todot_2generator20(__pyx_GeneratorObj
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     __pyx_t_1 = 0;
 
-    /* "/home/cdyer/cdec/python/src/lattice.pxi":63
+    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":63
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         if (__pyx_t_6 >= PyList_GET_SIZE(__pyx_t_5)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
         __pyx_t_1 = PyList_GET_ITEM(__pyx_t_5, __pyx_t_6); __Pyx_INCREF(__pyx_t_1); __pyx_t_6++;
+        #else
+        __pyx_t_1 = PySequence_ITEM(__pyx_t_5, __pyx_t_6); __pyx_t_6++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+        #endif
       } else if (!__pyx_t_7 && PyTuple_CheckExact(__pyx_t_5)) {
         if (__pyx_t_6 >= PyTuple_GET_SIZE(__pyx_t_5)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
         __pyx_t_1 = PyTuple_GET_ITEM(__pyx_t_5, __pyx_t_6); __Pyx_INCREF(__pyx_t_1); __pyx_t_6++;
+        #else
+        __pyx_t_1 = PySequence_ITEM(__pyx_t_5, __pyx_t_6); __pyx_t_6++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+        #endif
       } else {
         __pyx_t_1 = __pyx_t_7(__pyx_t_5);
         if (unlikely(!__pyx_t_1)) {
@@ -13506,21 +13731,22 @@ static PyObject *__pyx_gb_5_cdec_7Lattice_5todot_2generator20(__pyx_GeneratorObj
       }
       if ((likely(PyTuple_CheckExact(__pyx_t_1))) || (PyList_CheckExact(__pyx_t_1))) {
         PyObject* sequence = __pyx_t_1;
+        #if CYTHON_COMPILING_IN_CPYTHON
+        Py_ssize_t size = Py_SIZE(sequence);
+        #else
+        Py_ssize_t size = PySequence_Size(sequence);
+        #endif
+        if (unlikely(size != 3)) {
+          if (size > 3) __Pyx_RaiseTooManyValuesError(3);
+          else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
+          {__pyx_filename = __pyx_f[4]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        }
+        #if CYTHON_COMPILING_IN_CPYTHON
         if (likely(PyTuple_CheckExact(sequence))) {
-          if (unlikely(PyTuple_GET_SIZE(sequence) != 3)) {
-            if (PyTuple_GET_SIZE(sequence) > 3) __Pyx_RaiseTooManyValuesError(3);
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-            {__pyx_filename = __pyx_f[4]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-          }
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-          if (unlikely(PyList_GET_SIZE(sequence) != 3)) {
-            if (PyList_GET_SIZE(sequence) > 3) __Pyx_RaiseTooManyValuesError(3);
-            else __Pyx_RaiseNeedMoreValuesError(PyList_GET_SIZE(sequence));
-            {__pyx_filename = __pyx_f[4]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-          }
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           __pyx_t_9 = PyList_GET_ITEM(sequence, 1); 
           __pyx_t_10 = PyList_GET_ITEM(sequence, 2); 
@@ -13528,8 +13754,14 @@ static PyObject *__pyx_gb_5_cdec_7Lattice_5todot_2generator20(__pyx_GeneratorObj
         __Pyx_INCREF(__pyx_t_8);
         __Pyx_INCREF(__pyx_t_9);
         __Pyx_INCREF(__pyx_t_10);
+        #else
+        __pyx_t_8 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_9 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_10 = PySequence_ITEM(sequence, 2); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #endif
         __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-      } else {
+      } else
+      {
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@@ -13542,12 +13774,13 @@ static PyObject *__pyx_gb_5_cdec_7Lattice_5todot_2generator20(__pyx_GeneratorObj
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+        __pyx_t_12 = NULL;
         __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
         goto __pyx_L12_unpacking_done;
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         __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
-        if (PyErr_Occurred() && PyErr_ExceptionMatches(PyExc_StopIteration)) PyErr_Clear();
-        if (!PyErr_Occurred()) __Pyx_RaiseNeedMoreValuesError(index);
+        __pyx_t_12 = NULL;
+        if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
         {__pyx_filename = __pyx_f[4]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __pyx_L12_unpacking_done:;
       }
@@ -13567,7 +13800,7 @@ static PyObject *__pyx_gb_5_cdec_7Lattice_5todot_2generator20(__pyx_GeneratorObj
       __pyx_cur_scope->__pyx_v_delta = __pyx_t_10;
       __pyx_t_10 = 0;
 
-      /* "/home/cdyer/cdec/python/src/lattice.pxi":64
+      /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":64
  *             for i in range(len(self)):
  *                 for label, weight, delta in self[i]:
  *                     yield '%d -> %d [label="%s"];' % (i, i+delta, label.replace('"', '\\"'))             # <<<<<<<<<<<<<<
@@ -13627,7 +13860,7 @@ static PyObject *__pyx_gb_5_cdec_7Lattice_5todot_2generator20(__pyx_GeneratorObj
   }
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":65
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":65
  *                 for label, weight, delta in self[i]:
  *                     yield '%d -> %d [label="%s"];' % (i, i+delta, label.replace('"', '\\"'))
  *             yield '%d [shape=doublecircle]' % len(self)             # <<<<<<<<<<<<<<
@@ -13653,7 +13886,7 @@ static PyObject *__pyx_gb_5_cdec_7Lattice_5todot_2generator20(__pyx_GeneratorObj
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-  /* "/home/cdyer/cdec/python/src/lattice.pxi":66
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":66
  *                     yield '%d -> %d [label="%s"];' % (i, i+delta, label.replace('"', '\\"'))
  *             yield '%d [shape=doublecircle]' % len(self)
  *             yield '}'             # <<<<<<<<<<<<<<
@@ -13682,11 +13915,12 @@ static PyObject *__pyx_gb_5_cdec_7Lattice_5todot_2generator20(__pyx_GeneratorObj
   __pyx_L0:;
   __Pyx_XDECREF(__pyx_r);
   __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
   __Pyx_RefNannyFinishContext();
   return NULL;
 }
 
-/* "/home/cdyer/cdec/python/src/lattice.pxi":57
+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":57
  *             yield self[i]
  * 
  *     def todot(self):             # <<<<<<<<<<<<<<
@@ -13716,7 +13950,7 @@ static PyObject *__pyx_pf_5_cdec_7Lattice_15todot(struct __pyx_obj_5_cdec_Lattic
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   __Pyx_GIVEREF((PyObject *)__pyx_cur_scope->__pyx_v_self);
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":58
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":58
  * 
  *     def todot(self):
  *         def lines():             # <<<<<<<<<<<<<<
@@ -13728,7 +13962,7 @@ static PyObject *__pyx_pf_5_cdec_7Lattice_15todot(struct __pyx_obj_5_cdec_Lattic
   __pyx_v_lines = __pyx_t_1;
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":67
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":67
  *             yield '%d [shape=doublecircle]' % len(self)
  *             yield '}'
  *         return '\n'.join(lines()).encode('utf8')             # <<<<<<<<<<<<<<
@@ -13773,7 +14007,7 @@ static PyObject *__pyx_pf_5_cdec_7Lattice_15todot(struct __pyx_obj_5_cdec_Lattic
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":3
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":3
  * cimport mteval
  * 
  * cdef SufficientStats as_stats(x, y):             # <<<<<<<<<<<<<<
@@ -13794,7 +14028,7 @@ static struct __pyx_obj_5_cdec_SufficientStats *__pyx_f_5_cdec_as_stats(PyObject
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("as_stats", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":4
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":4
  * 
  * cdef SufficientStats as_stats(x, y):
  *     if isinstance(x, SufficientStats):             # <<<<<<<<<<<<<<
@@ -13807,7 +14041,7 @@ static struct __pyx_obj_5_cdec_SufficientStats *__pyx_f_5_cdec_as_stats(PyObject
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   if (__pyx_t_2) {
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":5
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":5
  * cdef SufficientStats as_stats(x, y):
  *     if isinstance(x, SufficientStats):
  *         return x             # <<<<<<<<<<<<<<
@@ -13822,7 +14056,7 @@ static struct __pyx_obj_5_cdec_SufficientStats *__pyx_f_5_cdec_as_stats(PyObject
     goto __pyx_L3;
   }
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":6
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":6
  *     if isinstance(x, SufficientStats):
  *         return x
  *     elif x == 0 and isinstance(y, SufficientStats):             # <<<<<<<<<<<<<<
@@ -13844,7 +14078,7 @@ static struct __pyx_obj_5_cdec_SufficientStats *__pyx_f_5_cdec_as_stats(PyObject
   }
   if (__pyx_t_4) {
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":7
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":7
  *         return x
  *     elif x == 0 and isinstance(y, SufficientStats):
  *         stats = SufficientStats()             # <<<<<<<<<<<<<<
@@ -13856,7 +14090,7 @@ static struct __pyx_obj_5_cdec_SufficientStats *__pyx_f_5_cdec_as_stats(PyObject
     __pyx_v_stats = ((struct __pyx_obj_5_cdec_SufficientStats *)__pyx_t_1);
     __pyx_t_1 = 0;
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":8
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":8
  *     elif x == 0 and isinstance(y, SufficientStats):
  *         stats = SufficientStats()
  *         stats.stats = new mteval.SufficientStats()             # <<<<<<<<<<<<<<
@@ -13865,7 +14099,7 @@ static struct __pyx_obj_5_cdec_SufficientStats *__pyx_f_5_cdec_as_stats(PyObject
  */
     __pyx_v_stats->stats = new SufficientStats();
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":9
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":9
  *         stats = SufficientStats()
  *         stats.stats = new mteval.SufficientStats()
  *         stats.metric = (<SufficientStats> y).metric             # <<<<<<<<<<<<<<
@@ -13874,7 +14108,7 @@ static struct __pyx_obj_5_cdec_SufficientStats *__pyx_f_5_cdec_as_stats(PyObject
  */
     __pyx_v_stats->metric = ((struct __pyx_obj_5_cdec_SufficientStats *)__pyx_v_y)->metric;
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":10
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":10
  *         stats.stats = new mteval.SufficientStats()
  *         stats.metric = (<SufficientStats> y).metric
  *         return stats             # <<<<<<<<<<<<<<
@@ -13913,7 +14147,7 @@ static PyObject *__pyx_pw_5_cdec_9Candidate_5words_1__get__(PyObject *__pyx_v_se
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":17
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":17
  * 
  *     property words:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -13932,7 +14166,7 @@ static PyObject *__pyx_pf_5_cdec_9Candidate_5words___get__(struct __pyx_obj_5_cd
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__get__", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":18
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":18
  *     property words:
  *         def __get__(self):
  *             return unicode(GetString(self.candidate.ewords).c_str(), encoding='utf8')             # <<<<<<<<<<<<<<
@@ -13983,7 +14217,7 @@ static PyObject *__pyx_pw_5_cdec_9Candidate_4fmap_1__get__(PyObject *__pyx_v_sel
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":21
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":21
  * 
  *     property fmap:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -14001,7 +14235,7 @@ static PyObject *__pyx_pf_5_cdec_9Candidate_4fmap___get__(struct __pyx_obj_5_cde
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__get__", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":22
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":22
  *     property fmap:
  *         def __get__(self):
  *             cdef SparseVector fmap = SparseVector.__new__(SparseVector)             # <<<<<<<<<<<<<<
@@ -14014,7 +14248,7 @@ static PyObject *__pyx_pf_5_cdec_9Candidate_4fmap___get__(struct __pyx_obj_5_cde
   __pyx_v_fmap = ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":23
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":23
  *         def __get__(self):
  *             cdef SparseVector fmap = SparseVector.__new__(SparseVector)
  *             fmap.vector = new FastSparseVector[weight_t](self.candidate.fmap)             # <<<<<<<<<<<<<<
@@ -14023,7 +14257,7 @@ static PyObject *__pyx_pf_5_cdec_9Candidate_4fmap___get__(struct __pyx_obj_5_cde
  */
   __pyx_v_fmap->vector = new FastSparseVector<weight_t>(__pyx_v_self->candidate->fmap);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":24
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":24
  *             cdef SparseVector fmap = SparseVector.__new__(SparseVector)
  *             fmap.vector = new FastSparseVector[weight_t](self.candidate.fmap)
  *             return fmap             # <<<<<<<<<<<<<<
@@ -14059,7 +14293,7 @@ static PyObject *__pyx_pw_5_cdec_9Candidate_5score_1__get__(PyObject *__pyx_v_se
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":14
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":14
  * cdef class Candidate:
  *     cdef mteval.const_Candidate* candidate
  *     cdef public float score             # <<<<<<<<<<<<<<
@@ -14135,7 +14369,7 @@ static void __pyx_pw_5_cdec_15SufficientStats_1__dealloc__(PyObject *__pyx_v_sel
   __Pyx_RefNannyFinishContext();
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":30
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":30
  *     cdef mteval.EvaluationMetric* metric
  * 
  *     def __dealloc__(self):             # <<<<<<<<<<<<<<
@@ -14147,7 +14381,7 @@ static void __pyx_pf_5_cdec_15SufficientStats___dealloc__(CYTHON_UNUSED struct _
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   __Pyx_RefNannySetupContext("__dealloc__", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":31
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":31
  * 
  *     def __dealloc__(self):
  *         del self.stats             # <<<<<<<<<<<<<<
@@ -14170,7 +14404,7 @@ static PyObject *__pyx_pw_5_cdec_15SufficientStats_5score_1__get__(PyObject *__p
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":34
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":34
  * 
  *     property score:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -14187,7 +14421,7 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_5score___get__(struct __pyx_o
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   __Pyx_RefNannySetupContext("__get__", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":35
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":35
  *     property score:
  *         def __get__(self):
  *             return self.metric.ComputeScore(self.stats[0])             # <<<<<<<<<<<<<<
@@ -14224,7 +14458,7 @@ static PyObject *__pyx_pw_5_cdec_15SufficientStats_6detail_1__get__(PyObject *__
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":38
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":38
  * 
  *     property detail:
  *         def __get__(self):             # <<<<<<<<<<<<<<
@@ -14241,7 +14475,7 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_6detail___get__(struct __pyx_
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-  /* "/home/cdyer/cdec/python/src/mteval.pxi":39
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":39
  *     property detail:
  *         def __get__(self):
  *             return self.metric.DetailedScore(self.stats[0]).c_str()             # <<<<<<<<<<<<<<
@@ -14278,7 +14512,7 @@ static Py_ssize_t __pyx_pw_5_cdec_15SufficientStats_3__len__(PyObject *__pyx_v_s
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":41
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":41
  *             return self.metric.DetailedScore(self.stats[0]).c_str()
  * 
  *     def __len__(self):             # <<<<<<<<<<<<<<
@@ -14291,7 +14525,7 @@ static Py_ssize_t __pyx_pf_5_cdec_15SufficientStats_2__len__(struct __pyx_obj_5_
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   __Pyx_RefNannySetupContext("__len__", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":42
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":42
  * 
  *     def __len__(self):
  *         return self.stats.size()             # <<<<<<<<<<<<<<
@@ -14319,7 +14553,7 @@ static PyObject *__pyx_pw_5_cdec_15SufficientStats_5__iter__(PyObject *__pyx_v_s
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":44
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":44
  *         return self.stats.size()
  * 
  *     def __iter__(self):             # <<<<<<<<<<<<<<
@@ -14383,7 +14617,7 @@ static PyObject *__pyx_gb_5_cdec_15SufficientStats_6generator15(__pyx_GeneratorO
   __pyx_L3_first_run:;
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-  /* "/home/cdyer/cdec/python/src/mteval.pxi":45
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":45
  * 
  *     def __iter__(self):
  *         for i in range(len(self)):             # <<<<<<<<<<<<<<
@@ -14413,10 +14647,18 @@ static PyObject *__pyx_gb_5_cdec_15SufficientStats_6generator15(__pyx_GeneratorO
   for (;;) {
     if (!__pyx_t_4 && PyList_CheckExact(__pyx_t_3)) {
       if (__pyx_t_1 >= PyList_GET_SIZE(__pyx_t_3)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_2 = PyList_GET_ITEM(__pyx_t_3, __pyx_t_1); __Pyx_INCREF(__pyx_t_2); __pyx_t_1++;
+      #else
+      __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 45; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else if (!__pyx_t_4 && PyTuple_CheckExact(__pyx_t_3)) {
       if (__pyx_t_1 >= PyTuple_GET_SIZE(__pyx_t_3)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_2 = PyTuple_GET_ITEM(__pyx_t_3, __pyx_t_1); __Pyx_INCREF(__pyx_t_2); __pyx_t_1++;
+      #else
+      __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 45; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else {
       __pyx_t_2 = __pyx_t_4(__pyx_t_3);
       if (unlikely(!__pyx_t_2)) {
@@ -14434,7 +14676,7 @@ static PyObject *__pyx_gb_5_cdec_15SufficientStats_6generator15(__pyx_GeneratorO
     __pyx_cur_scope->__pyx_v_i = __pyx_t_2;
     __pyx_t_2 = 0;
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":46
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":46
  *     def __iter__(self):
  *         for i in range(len(self)):
  *             yield self[i]             # <<<<<<<<<<<<<<
@@ -14472,6 +14714,7 @@ static PyObject *__pyx_gb_5_cdec_15SufficientStats_6generator15(__pyx_GeneratorO
   __pyx_L0:;
   __Pyx_XDECREF(__pyx_r);
   __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
   __Pyx_RefNannyFinishContext();
   return NULL;
 }
@@ -14497,7 +14740,7 @@ static PyObject *__pyx_pw_5_cdec_15SufficientStats_8__getitem__(PyObject *__pyx_
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":48
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":48
  *             yield self[i]
  * 
  *     def __getitem__(self, int index):             # <<<<<<<<<<<<<<
@@ -14517,7 +14760,7 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_7__getitem__(struct __pyx_obj
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__getitem__", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":49
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":49
  * 
  *     def __getitem__(self, int index):
  *         if not 0 <= index < len(self):             # <<<<<<<<<<<<<<
@@ -14532,7 +14775,7 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_7__getitem__(struct __pyx_obj
   __pyx_t_3 = (!__pyx_t_1);
   if (__pyx_t_3) {
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":50
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":50
  *     def __getitem__(self, int index):
  *         if not 0 <= index < len(self):
  *             raise IndexError('sufficient stats vector index out of range')             # <<<<<<<<<<<<<<
@@ -14548,7 +14791,7 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_7__getitem__(struct __pyx_obj
   }
   __pyx_L3:;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":51
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":51
  *         if not 0 <= index < len(self):
  *             raise IndexError('sufficient stats vector index out of range')
  *         return self.stats[0][index]             # <<<<<<<<<<<<<<
@@ -14590,7 +14833,7 @@ static PyObject *__pyx_pw_5_cdec_15SufficientStats_10__iadd__(PyObject *__pyx_v_
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":53
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":53
  *         return self.stats[0][index]
  * 
  *     def __iadd__(SufficientStats self, SufficientStats other):             # <<<<<<<<<<<<<<
@@ -14603,7 +14846,7 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_9__iadd__(struct __pyx_obj_5_
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__iadd__", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":54
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":54
  * 
  *     def __iadd__(SufficientStats self, SufficientStats other):
  *         self.stats[0] += other.stats[0]             # <<<<<<<<<<<<<<
@@ -14612,7 +14855,7 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_9__iadd__(struct __pyx_obj_5_
  */
   (__pyx_v_self->stats[0]) += (__pyx_v_other->stats[0]);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":55
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":55
  *     def __iadd__(SufficientStats self, SufficientStats other):
  *         self.stats[0] += other.stats[0]
  *         return self             # <<<<<<<<<<<<<<
@@ -14642,7 +14885,7 @@ static PyObject *__pyx_pw_5_cdec_15SufficientStats_12__add__(PyObject *__pyx_v_x
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":57
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":57
  *         return self
  * 
  *     def __add__(x, y):             # <<<<<<<<<<<<<<
@@ -14662,7 +14905,7 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_11__add__(PyObject *__pyx_v_x
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__add__", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":58
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":58
  * 
  *     def __add__(x, y):
  *         cdef SufficientStats sx = as_stats(x, y)             # <<<<<<<<<<<<<<
@@ -14674,7 +14917,7 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_11__add__(PyObject *__pyx_v_x
   __pyx_v_sx = ((struct __pyx_obj_5_cdec_SufficientStats *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":59
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":59
  *     def __add__(x, y):
  *         cdef SufficientStats sx = as_stats(x, y)
  *         cdef SufficientStats sy = as_stats(y, x)             # <<<<<<<<<<<<<<
@@ -14686,7 +14929,7 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_11__add__(PyObject *__pyx_v_x
   __pyx_v_sy = ((struct __pyx_obj_5_cdec_SufficientStats *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":60
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":60
  *         cdef SufficientStats sx = as_stats(x, y)
  *         cdef SufficientStats sy = as_stats(y, x)
  *         cdef SufficientStats result = SufficientStats()             # <<<<<<<<<<<<<<
@@ -14698,7 +14941,7 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_11__add__(PyObject *__pyx_v_x
   __pyx_v_result = ((struct __pyx_obj_5_cdec_SufficientStats *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":61
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":61
  *         cdef SufficientStats sy = as_stats(y, x)
  *         cdef SufficientStats result = SufficientStats()
  *         result.stats = new mteval.SufficientStats(mteval.add(sx.stats[0], sy.stats[0]))             # <<<<<<<<<<<<<<
@@ -14707,7 +14950,7 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_11__add__(PyObject *__pyx_v_x
  */
   __pyx_v_result->stats = new SufficientStats(operator+((__pyx_v_sx->stats[0]), (__pyx_v_sy->stats[0])));
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":62
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":62
  *         cdef SufficientStats result = SufficientStats()
  *         result.stats = new mteval.SufficientStats(mteval.add(sx.stats[0], sy.stats[0]))
  *         result.metric = sx.metric             # <<<<<<<<<<<<<<
@@ -14716,7 +14959,7 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_11__add__(PyObject *__pyx_v_x
  */
   __pyx_v_result->metric = __pyx_v_sx->metric;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":63
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":63
  *         result.stats = new mteval.SufficientStats(mteval.add(sx.stats[0], sy.stats[0]))
  *         result.metric = sx.metric
  *         return result             # <<<<<<<<<<<<<<
@@ -14747,11 +14990,11 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_11__add__(PyObject *__pyx_v_x
 static int __pyx_pw_5_cdec_12CandidateSet_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
 static int __pyx_pw_5_cdec_12CandidateSet_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
   struct __pyx_obj_5_cdec_SegmentEvaluator *__pyx_v_evaluator = 0;
-  static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__evaluator,0};
   int __pyx_r;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__cinit__ (wrapper)", 0);
   {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__evaluator,0};
     PyObject* values[1] = {0};
     if (unlikely(__pyx_kwds)) {
       Py_ssize_t kw_args;
@@ -14764,8 +15007,7 @@ static int __pyx_pw_5_cdec_12CandidateSet_1__cinit__(PyObject *__pyx_v_self, PyO
       kw_args = PyDict_Size(__pyx_kwds);
       switch (pos_args) {
         case  0:
-        values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__evaluator);
-        if (likely(values[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)) {
@@ -14796,7 +15038,7 @@ static int __pyx_pw_5_cdec_12CandidateSet_1__cinit__(PyObject *__pyx_v_self, PyO
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":70
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":70
  *     cdef mteval.CandidateSet* cs
  * 
  *     def __cinit__(self, SegmentEvaluator evaluator):             # <<<<<<<<<<<<<<
@@ -14809,7 +15051,7 @@ static int __pyx_pf_5_cdec_12CandidateSet___cinit__(struct __pyx_obj_5_cdec_Cand
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__cinit__", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":71
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":71
  * 
  *     def __cinit__(self, SegmentEvaluator evaluator):
  *         self.scorer = new shared_ptr[mteval.SegmentEvaluator](evaluator.scorer[0])             # <<<<<<<<<<<<<<
@@ -14818,7 +15060,7 @@ static int __pyx_pf_5_cdec_12CandidateSet___cinit__(struct __pyx_obj_5_cdec_Cand
  */
   __pyx_v_self->scorer = new boost::shared_ptr<SegmentEvaluator>((__pyx_v_evaluator->scorer[0]));
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":72
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":72
  *     def __cinit__(self, SegmentEvaluator evaluator):
  *         self.scorer = new shared_ptr[mteval.SegmentEvaluator](evaluator.scorer[0])
  *         self.metric = evaluator.metric             # <<<<<<<<<<<<<<
@@ -14827,7 +15069,7 @@ static int __pyx_pf_5_cdec_12CandidateSet___cinit__(struct __pyx_obj_5_cdec_Cand
  */
   __pyx_v_self->metric = __pyx_v_evaluator->metric;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":73
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":73
  *         self.scorer = new shared_ptr[mteval.SegmentEvaluator](evaluator.scorer[0])
  *         self.metric = evaluator.metric
  *         self.cs = new mteval.CandidateSet()             # <<<<<<<<<<<<<<
@@ -14850,7 +15092,7 @@ static void __pyx_pw_5_cdec_12CandidateSet_3__dealloc__(PyObject *__pyx_v_self)
   __Pyx_RefNannyFinishContext();
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":75
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":75
  *         self.cs = new mteval.CandidateSet()
  * 
  *     def __dealloc__(self):             # <<<<<<<<<<<<<<
@@ -14862,7 +15104,7 @@ static void __pyx_pf_5_cdec_12CandidateSet_2__dealloc__(CYTHON_UNUSED struct __p
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__dealloc__", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":76
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":76
  * 
  *     def __dealloc__(self):
  *         del self.scorer             # <<<<<<<<<<<<<<
@@ -14871,7 +15113,7 @@ static void __pyx_pf_5_cdec_12CandidateSet_2__dealloc__(CYTHON_UNUSED struct __p
  */
   delete __pyx_v_self->scorer;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":77
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":77
  *     def __dealloc__(self):
  *         del self.scorer
  *         del self.cs             # <<<<<<<<<<<<<<
@@ -14894,7 +15136,7 @@ static Py_ssize_t __pyx_pw_5_cdec_12CandidateSet_5__len__(PyObject *__pyx_v_self
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":79
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":79
  *         del self.cs
  * 
  *     def __len__(self):             # <<<<<<<<<<<<<<
@@ -14907,7 +15149,7 @@ static Py_ssize_t __pyx_pf_5_cdec_12CandidateSet_4__len__(struct __pyx_obj_5_cde
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__len__", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":80
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":80
  * 
  *     def __len__(self):
  *         return self.cs.size()             # <<<<<<<<<<<<<<
@@ -14944,7 +15186,7 @@ static PyObject *__pyx_pw_5_cdec_12CandidateSet_7__getitem__(PyObject *__pyx_v_s
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":82
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":82
  *         return self.cs.size()
  * 
  *     def __getitem__(self,int k):             # <<<<<<<<<<<<<<
@@ -14964,7 +15206,7 @@ static PyObject *__pyx_pf_5_cdec_12CandidateSet_6__getitem__(struct __pyx_obj_5_
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__getitem__", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":83
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":83
  * 
  *     def __getitem__(self,int k):
  *         if not 0 <= k < self.cs.size():             # <<<<<<<<<<<<<<
@@ -14978,7 +15220,7 @@ static PyObject *__pyx_pf_5_cdec_12CandidateSet_6__getitem__(struct __pyx_obj_5_
   __pyx_t_2 = (!__pyx_t_1);
   if (__pyx_t_2) {
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":84
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":84
  *     def __getitem__(self,int k):
  *         if not 0 <= k < self.cs.size():
  *             raise IndexError('candidate set index out of range')             # <<<<<<<<<<<<<<
@@ -14994,7 +15236,7 @@ static PyObject *__pyx_pf_5_cdec_12CandidateSet_6__getitem__(struct __pyx_obj_5_
   }
   __pyx_L3:;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":85
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":85
  *         if not 0 <= k < self.cs.size():
  *             raise IndexError('candidate set index out of range')
  *         cdef Candidate candidate = Candidate()             # <<<<<<<<<<<<<<
@@ -15006,7 +15248,7 @@ static PyObject *__pyx_pf_5_cdec_12CandidateSet_6__getitem__(struct __pyx_obj_5_
   __pyx_v_candidate = ((struct __pyx_obj_5_cdec_Candidate *)__pyx_t_3);
   __pyx_t_3 = 0;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":86
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":86
  *             raise IndexError('candidate set index out of range')
  *         cdef Candidate candidate = Candidate()
  *         candidate.candidate = &self.cs[0][k]             # <<<<<<<<<<<<<<
@@ -15015,7 +15257,7 @@ static PyObject *__pyx_pf_5_cdec_12CandidateSet_6__getitem__(struct __pyx_obj_5_
  */
   __pyx_v_candidate->candidate = (&((__pyx_v_self->cs[0])[__pyx_v_k]));
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":87
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":87
  *         cdef Candidate candidate = Candidate()
  *         candidate.candidate = &self.cs[0][k]
  *         candidate.score = self.metric.ComputeScore(self.cs[0][k].eval_feats)             # <<<<<<<<<<<<<<
@@ -15024,7 +15266,7 @@ static PyObject *__pyx_pf_5_cdec_12CandidateSet_6__getitem__(struct __pyx_obj_5_
  */
   __pyx_v_candidate->score = __pyx_v_self->metric->ComputeScore(((__pyx_v_self->cs[0])[__pyx_v_k]).eval_feats);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":88
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":88
  *         candidate.candidate = &self.cs[0][k]
  *         candidate.score = self.metric.ComputeScore(self.cs[0][k].eval_feats)
  *         return candidate             # <<<<<<<<<<<<<<
@@ -15061,7 +15303,7 @@ static PyObject *__pyx_pw_5_cdec_12CandidateSet_9__iter__(PyObject *__pyx_v_self
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":90
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":90
  *         return candidate
  * 
  *     def __iter__(self):             # <<<<<<<<<<<<<<
@@ -15124,7 +15366,7 @@ static PyObject *__pyx_gb_5_cdec_12CandidateSet_10generator16(__pyx_GeneratorObj
   __pyx_L3_first_run:;
   if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 90; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":92
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":92
  *     def __iter__(self):
  *         cdef unsigned i
  *         for i in range(len(self)):             # <<<<<<<<<<<<<<
@@ -15135,7 +15377,7 @@ static PyObject *__pyx_gb_5_cdec_12CandidateSet_10generator16(__pyx_GeneratorObj
   for (__pyx_t_2 = 0; __pyx_t_2 < __pyx_t_1; __pyx_t_2+=1) {
     __pyx_cur_scope->__pyx_v_i = __pyx_t_2;
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":93
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":93
  *         cdef unsigned i
  *         for i in range(len(self)):
  *             yield self[i]             # <<<<<<<<<<<<<<
@@ -15166,6 +15408,7 @@ static PyObject *__pyx_gb_5_cdec_12CandidateSet_10generator16(__pyx_GeneratorObj
   __pyx_L0:;
   __Pyx_XDECREF(__pyx_r);
   __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
   __Pyx_RefNannyFinishContext();
   return NULL;
 }
@@ -15175,11 +15418,11 @@ static PyObject *__pyx_pw_5_cdec_12CandidateSet_12add_kbest(PyObject *__pyx_v_se
 static PyObject *__pyx_pw_5_cdec_12CandidateSet_12add_kbest(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
   struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_hypergraph = 0;
   unsigned int __pyx_v_k;
-  static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__hypergraph,&__pyx_n_s__k,0};
   PyObject *__pyx_r = 0;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("add_kbest (wrapper)", 0);
   {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__hypergraph,&__pyx_n_s__k,0};
     PyObject* values[2] = {0,0};
     if (unlikely(__pyx_kwds)) {
       Py_ssize_t kw_args;
@@ -15193,12 +15436,10 @@ static PyObject *__pyx_pw_5_cdec_12CandidateSet_12add_kbest(PyObject *__pyx_v_se
       kw_args = PyDict_Size(__pyx_kwds);
       switch (pos_args) {
         case  0:
-        values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__hypergraph);
-        if (likely(values[0])) kw_args--;
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__hypergraph)) != 0)) kw_args--;
         else goto __pyx_L5_argtuple_error;
         case  1:
-        values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__k);
-        if (likely(values[1])) kw_args--;
+        if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__k)) != 0)) kw_args--;
         else {
           __Pyx_RaiseArgtupleInvalid("add_kbest", 1, 2, 2, 1); {__pyx_filename = __pyx_f[5]; __pyx_lineno = 95; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
@@ -15233,7 +15474,7 @@ static PyObject *__pyx_pw_5_cdec_12CandidateSet_12add_kbest(PyObject *__pyx_v_se
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":95
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":95
  *             yield self[i]
  * 
  *     def add_kbest(self, Hypergraph hypergraph, unsigned k):             # <<<<<<<<<<<<<<
@@ -15246,7 +15487,7 @@ static PyObject *__pyx_pf_5_cdec_12CandidateSet_11add_kbest(struct __pyx_obj_5_c
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   __Pyx_RefNannySetupContext("add_kbest", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":96
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":96
  * 
  *     def add_kbest(self, Hypergraph hypergraph, unsigned k):
  *         self.cs.AddKBestCandidates(hypergraph.hg[0], k, self.scorer.get())             # <<<<<<<<<<<<<<
@@ -15270,7 +15511,7 @@ static void __pyx_pw_5_cdec_16SegmentEvaluator_1__dealloc__(PyObject *__pyx_v_se
   __Pyx_RefNannyFinishContext();
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":102
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":102
  *     cdef mteval.EvaluationMetric* metric
  * 
  *     def __dealloc__(self):             # <<<<<<<<<<<<<<
@@ -15282,7 +15523,7 @@ static void __pyx_pf_5_cdec_16SegmentEvaluator___dealloc__(CYTHON_UNUSED struct
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__dealloc__", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":103
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":103
  * 
  *     def __dealloc__(self):
  *         del self.scorer             # <<<<<<<<<<<<<<
@@ -15305,7 +15546,7 @@ static PyObject *__pyx_pw_5_cdec_16SegmentEvaluator_3evaluate(PyObject *__pyx_v_
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":105
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":105
  *         del self.scorer
  * 
  *     def evaluate(self, sentence):             # <<<<<<<<<<<<<<
@@ -15325,7 +15566,7 @@ static PyObject *__pyx_pf_5_cdec_16SegmentEvaluator_2evaluate(struct __pyx_obj_5
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("evaluate", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":107
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":107
  *     def evaluate(self, sentence):
  *         cdef vector[WordID] hyp
  *         cdef SufficientStats sf = SufficientStats()             # <<<<<<<<<<<<<<
@@ -15337,7 +15578,7 @@ static PyObject *__pyx_pf_5_cdec_16SegmentEvaluator_2evaluate(struct __pyx_obj_5
   __pyx_v_sf = ((struct __pyx_obj_5_cdec_SufficientStats *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":108
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":108
  *         cdef vector[WordID] hyp
  *         cdef SufficientStats sf = SufficientStats()
  *         sf.metric = self.metric             # <<<<<<<<<<<<<<
@@ -15346,7 +15587,7 @@ static PyObject *__pyx_pf_5_cdec_16SegmentEvaluator_2evaluate(struct __pyx_obj_5
  */
   __pyx_v_sf->metric = __pyx_v_self->metric;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":109
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":109
  *         cdef SufficientStats sf = SufficientStats()
  *         sf.metric = self.metric
  *         sf.stats = new mteval.SufficientStats()             # <<<<<<<<<<<<<<
@@ -15355,7 +15596,7 @@ static PyObject *__pyx_pf_5_cdec_16SegmentEvaluator_2evaluate(struct __pyx_obj_5
  */
   __pyx_v_sf->stats = new SufficientStats();
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":110
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":110
  *         sf.metric = self.metric
  *         sf.stats = new mteval.SufficientStats()
  *         ConvertSentence(string(as_str(sentence.strip())), &hyp)             # <<<<<<<<<<<<<<
@@ -15370,7 +15611,7 @@ static PyObject *__pyx_pf_5_cdec_16SegmentEvaluator_2evaluate(struct __pyx_obj_5
   TD::ConvertSentence(std::string(__pyx_f_5_cdec_as_str(__pyx_t_2, NULL)), (&__pyx_v_hyp));
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":111
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":111
  *         sf.stats = new mteval.SufficientStats()
  *         ConvertSentence(string(as_str(sentence.strip())), &hyp)
  *         self.scorer.get().Evaluate(hyp, sf.stats)             # <<<<<<<<<<<<<<
@@ -15379,7 +15620,7 @@ static PyObject *__pyx_pf_5_cdec_16SegmentEvaluator_2evaluate(struct __pyx_obj_5
  */
   __pyx_v_self->scorer->get()->Evaluate(__pyx_v_hyp, __pyx_v_sf->stats);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":112
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":112
  *         ConvertSentence(string(as_str(sentence.strip())), &hyp)
  *         self.scorer.get().Evaluate(hyp, sf.stats)
  *         return sf             # <<<<<<<<<<<<<<
@@ -15416,7 +15657,7 @@ static PyObject *__pyx_pw_5_cdec_16SegmentEvaluator_5candidate_set(PyObject *__p
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":114
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":114
  *         return sf
  * 
  *     def candidate_set(self):             # <<<<<<<<<<<<<<
@@ -15434,7 +15675,7 @@ static PyObject *__pyx_pf_5_cdec_16SegmentEvaluator_4candidate_set(struct __pyx_
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("candidate_set", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":115
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":115
  * 
  *     def candidate_set(self):
  *         return CandidateSet(self)             # <<<<<<<<<<<<<<
@@ -15471,14 +15712,14 @@ static PyObject *__pyx_pf_5_cdec_16SegmentEvaluator_4candidate_set(struct __pyx_
 static int __pyx_pw_5_cdec_6Scorer_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
 static int __pyx_pw_5_cdec_6Scorer_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
   PyObject *__pyx_v_name = 0;
-  static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__name,0};
   int __pyx_r;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__cinit__ (wrapper)", 0);
   {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__name,0};
     PyObject* values[1] = {0};
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":121
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":121
  *     cdef mteval.EvaluationMetric* metric
  * 
  *     def __cinit__(self, bytes name=None):             # <<<<<<<<<<<<<<
@@ -15542,7 +15783,7 @@ static int __pyx_pf_5_cdec_6Scorer___cinit__(struct __pyx_obj_5_cdec_Scorer *__p
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__cinit__", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":122
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":122
  * 
  *     def __cinit__(self, bytes name=None):
  *         if name:             # <<<<<<<<<<<<<<
@@ -15552,7 +15793,7 @@ static int __pyx_pf_5_cdec_6Scorer___cinit__(struct __pyx_obj_5_cdec_Scorer *__p
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   if (__pyx_t_1) {
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":123
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":123
  *     def __cinit__(self, bytes name=None):
  *         if name:
  *             self.name = new string(name)             # <<<<<<<<<<<<<<
@@ -15562,7 +15803,7 @@ static int __pyx_pf_5_cdec_6Scorer___cinit__(struct __pyx_obj_5_cdec_Scorer *__p
     __pyx_t_2 = PyBytes_AsString(((PyObject *)__pyx_v_name)); if (unlikely((!__pyx_t_2) && PyErr_Occurred())) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 123; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __pyx_v_self->name = new std::string(__pyx_t_2);
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":124
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":124
  *         if name:
  *             self.name = new string(name)
  *             self.metric = mteval.MetricInstance(self.name[0])             # <<<<<<<<<<<<<<
@@ -15593,7 +15834,7 @@ static void __pyx_pw_5_cdec_6Scorer_3__dealloc__(PyObject *__pyx_v_self) {
   __Pyx_RefNannyFinishContext();
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":126
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":126
  *             self.metric = mteval.MetricInstance(self.name[0])
  * 
  *     def __dealloc__(self):             # <<<<<<<<<<<<<<
@@ -15605,7 +15846,7 @@ static void __pyx_pf_5_cdec_6Scorer_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__dealloc__", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":127
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":127
  * 
  *     def __dealloc__(self):
  *         del self.name             # <<<<<<<<<<<<<<
@@ -15621,11 +15862,11 @@ static void __pyx_pf_5_cdec_6Scorer_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_
 static PyObject *__pyx_pw_5_cdec_6Scorer_5__call__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
 static PyObject *__pyx_pw_5_cdec_6Scorer_5__call__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
   PyObject *__pyx_v_refs = 0;
-  static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__refs,0};
   PyObject *__pyx_r = 0;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__call__ (wrapper)", 0);
   {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__refs,0};
     PyObject* values[1] = {0};
     if (unlikely(__pyx_kwds)) {
       Py_ssize_t kw_args;
@@ -15638,8 +15879,7 @@ static PyObject *__pyx_pw_5_cdec_6Scorer_5__call__(PyObject *__pyx_v_self, PyObj
       kw_args = PyDict_Size(__pyx_kwds);
       switch (pos_args) {
         case  0:
-        values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__refs);
-        if (likely(values[0])) kw_args--;
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__refs)) != 0)) kw_args--;
         else goto __pyx_L5_argtuple_error;
       }
       if (unlikely(kw_args > 0)) {
@@ -15665,7 +15905,7 @@ static PyObject *__pyx_pw_5_cdec_6Scorer_5__call__(PyObject *__pyx_v_self, PyObj
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":129
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":129
  *         del self.name
  * 
  *     def __call__(self, refs):             # <<<<<<<<<<<<<<
@@ -15694,7 +15934,7 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
   __Pyx_RefNannySetupContext("__call__", 0);
   __Pyx_INCREF(__pyx_v_refs);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":130
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":130
  * 
  *     def __call__(self, refs):
  *         if isinstance(refs, unicode) or isinstance(refs, str):             # <<<<<<<<<<<<<<
@@ -15716,7 +15956,7 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
   }
   if (__pyx_t_4) {
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":131
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":131
  *     def __call__(self, refs):
  *         if isinstance(refs, unicode) or isinstance(refs, str):
  *             refs = [refs]             # <<<<<<<<<<<<<<
@@ -15735,7 +15975,7 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
   }
   __pyx_L3:;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":132
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":132
  *         if isinstance(refs, unicode) or isinstance(refs, str):
  *             refs = [refs]
  *         cdef vector[vector[WordID]]* refsv = new vector[vector[WordID]]()             # <<<<<<<<<<<<<<
@@ -15744,7 +15984,7 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
  */
   __pyx_v_refsv = new std::vector<std::vector<WordID> >();
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":135
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":135
  *         cdef vector[WordID]* refv
  *         cdef bytes ref_str
  *         for ref in refs:             # <<<<<<<<<<<<<<
@@ -15762,10 +16002,18 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
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     if (!__pyx_t_6 && PyList_CheckExact(__pyx_t_1)) {
       if (__pyx_t_5 >= PyList_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_7 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_5); __Pyx_INCREF(__pyx_t_7); __pyx_t_5++;
+      #else
+      __pyx_t_7 = PySequence_ITEM(__pyx_t_1, __pyx_t_5); __pyx_t_5++; if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 135; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else if (!__pyx_t_6 && PyTuple_CheckExact(__pyx_t_1)) {
       if (__pyx_t_5 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_7 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_5); __Pyx_INCREF(__pyx_t_7); __pyx_t_5++;
+      #else
+      __pyx_t_7 = PySequence_ITEM(__pyx_t_1, __pyx_t_5); __pyx_t_5++; if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 135; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else {
       __pyx_t_7 = __pyx_t_6(__pyx_t_1);
       if (unlikely(!__pyx_t_7)) {
@@ -15781,7 +16029,7 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
     __pyx_v_ref = __pyx_t_7;
     __pyx_t_7 = 0;
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":136
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":136
  *         cdef bytes ref_str
  *         for ref in refs:
  *             refv = new vector[WordID]()             # <<<<<<<<<<<<<<
@@ -15790,7 +16038,7 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
  */
     __pyx_v_refv = new std::vector<WordID>();
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":137
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":137
  *         for ref in refs:
  *             refv = new vector[WordID]()
  *             ConvertSentence(string(as_str(ref.strip())), refv)             # <<<<<<<<<<<<<<
@@ -15805,7 +16053,7 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
     TD::ConvertSentence(std::string(__pyx_f_5_cdec_as_str(__pyx_t_8, NULL)), __pyx_v_refv);
     __Pyx_DECREF(__pyx_t_8); __pyx_t_8 = 0;
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":138
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":138
  *             refv = new vector[WordID]()
  *             ConvertSentence(string(as_str(ref.strip())), refv)
  *             refsv.push_back(refv[0])             # <<<<<<<<<<<<<<
@@ -15814,7 +16062,7 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
  */
     __pyx_v_refsv->push_back((__pyx_v_refv[0]));
 
-    /* "/home/cdyer/cdec/python/src/mteval.pxi":139
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":139
  *             ConvertSentence(string(as_str(ref.strip())), refv)
  *             refsv.push_back(refv[0])
  *             del refv             # <<<<<<<<<<<<<<
@@ -15825,7 +16073,7 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
   }
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":141
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":141
  *             del refv
  *         cdef unsigned i
  *         cdef SegmentEvaluator evaluator = SegmentEvaluator()             # <<<<<<<<<<<<<<
@@ -15837,7 +16085,7 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
   __pyx_v_evaluator = ((struct __pyx_obj_5_cdec_SegmentEvaluator *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":142
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":142
  *         cdef unsigned i
  *         cdef SegmentEvaluator evaluator = SegmentEvaluator()
  *         evaluator.metric = self.metric             # <<<<<<<<<<<<<<
@@ -15846,7 +16094,7 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
  */
   __pyx_v_evaluator->metric = __pyx_v_self->metric;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":143
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":143
  *         cdef SegmentEvaluator evaluator = SegmentEvaluator()
  *         evaluator.metric = self.metric
  *         evaluator.scorer = new shared_ptr[mteval.SegmentEvaluator](             # <<<<<<<<<<<<<<
@@ -15855,7 +16103,7 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
  */
   __pyx_v_evaluator->scorer = new boost::shared_ptr<SegmentEvaluator>(__pyx_v_self->metric->CreateSegmentEvaluator((__pyx_v_refsv[0])));
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":145
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":145
  *         evaluator.scorer = new shared_ptr[mteval.SegmentEvaluator](
  *                 self.metric.CreateSegmentEvaluator(refsv[0]))
  *         del refsv # in theory should not delete but store in SegmentEvaluator             # <<<<<<<<<<<<<<
@@ -15864,7 +16112,7 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
  */
   delete __pyx_v_refsv;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":146
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":146
  *                 self.metric.CreateSegmentEvaluator(refsv[0]))
  *         del refsv # in theory should not delete but store in SegmentEvaluator
  *         return evaluator             # <<<<<<<<<<<<<<
@@ -15904,7 +16152,7 @@ static PyObject *__pyx_pw_5_cdec_6Scorer_7__str__(PyObject *__pyx_v_self) {
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":148
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":148
  *         return evaluator
  * 
  *     def __str__(self):             # <<<<<<<<<<<<<<
@@ -15921,7 +16169,7 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_6__str__(struct __pyx_obj_5_cdec_Scorer
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   __Pyx_RefNannySetupContext("__str__", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":149
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":149
  * 
  *     def __str__(self):
  *         return self.name.c_str()             # <<<<<<<<<<<<<<
@@ -15947,7 +16195,7 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_6__str__(struct __pyx_obj_5_cdec_Scorer
   return __pyx_r;
 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":151
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":151
  *         return self.name.c_str()
  * 
  * cdef float _compute_score(void* metric_, mteval.SufficientStats* stats):             # <<<<<<<<<<<<<<
@@ -15973,7 +16221,7 @@ static float __pyx_f_5_cdec__compute_score(void *__pyx_v_metric_, SufficientStat
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("_compute_score", 0);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":152
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":152
  * 
  * cdef float _compute_score(void* metric_, mteval.SufficientStats* stats):
  *     cdef Metric metric = <Metric> metric_             # <<<<<<<<<<<<<<
@@ -15983,7 +16231,7 @@ static float __pyx_f_5_cdec__compute_score(void *__pyx_v_metric_, SufficientStat
   __Pyx_INCREF(((PyObject *)((struct __pyx_obj_5_cdec_Metric *)__pyx_v_metric_)));
   __pyx_v_metric = ((struct __pyx_obj_5_cdec_Metric *)__pyx_v_metric_);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":153
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":153
  * cdef float _compute_score(void* metric_, mteval.SufficientStats* stats):
  *     cdef Metric metric = <Metric> metric_
  *     cdef list ss = []             # <<<<<<<<<<<<<<
@@ -15995,7 +16243,7 @@ static float __pyx_f_5_cdec__compute_score(void *__pyx_v_metric_, SufficientStat
   __pyx_v_ss = __pyx_t_1;
   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":155
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":155
  *     cdef list ss = []
  *     cdef unsigned i
  *     for i in range(stats.size()):             # <<<<<<<<<<<<<<
@@ -16006,7 +16254,7 @@ static float __pyx_f_5_cdec__compute_score(void *__pyx_v_metric_, SufficientStat
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-    /* "/home/cdyer/cdec/python/src/mteval.pxi":156
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":156
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     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
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-  /* "/home/cdyer/cdec/python/src/mteval.pxi":157
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":157
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   return __pyx_r;
 }
 
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+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":159
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-  /* "/home/cdyer/cdec/python/src/mteval.pxi":163
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":163
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   __pyx_v_metric = ((struct __pyx_obj_5_cdec_Metric *)__pyx_v_metric_);
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":164
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":164
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   __pyx_t_1 = 0;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":166
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":166
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-    /* "/home/cdyer/cdec/python/src/mteval.pxi":167
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":167
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-  /* "/home/cdyer/cdec/python/src/mteval.pxi":168
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":168
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-  /* "/home/cdyer/cdec/python/src/mteval.pxi":169
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":169
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+    PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
+    {__pyx_filename = __pyx_f[5]; __pyx_lineno = 169; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __pyx_t_7 = PyList_GET_SIZE(((PyObject *)__pyx_v_ss)); 
+  __pyx_t_7 = PyList_GET_SIZE(((PyObject *)__pyx_v_ss)); if (unlikely(__pyx_t_7 == -1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 169; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/cdyer/cdec/python/src/mteval.pxi":170
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":170
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+    PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
+    {__pyx_filename = __pyx_f[5]; __pyx_lineno = 170; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __pyx_t_7 = PyList_GET_SIZE(((PyObject *)__pyx_v_ss)); 
+  __pyx_t_7 = PyList_GET_SIZE(((PyObject *)__pyx_v_ss)); if (unlikely(__pyx_t_7 == -1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 170; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/cdyer/cdec/python/src/mteval.pxi":171
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 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":175
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-  /* "/home/cdyer/cdec/python/src/mteval.pxi":176
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":176
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-  /* "/home/cdyer/cdec/python/src/mteval.pxi":177
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":177
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-  /* "/home/cdyer/cdec/python/src/mteval.pxi":178
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":178
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-        values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__refs);
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 }
 
-/* "/home/cdyer/cdec/python/src/mteval.pxi":181
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":181
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-  /* "/home/cdyer/cdec/python/src/mteval.pxi":182
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":182
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-/* "/home/cdyer/cdec/python/src/mteval.pxi":184
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-  /* "/home/cdyer/cdec/python/src/mteval.pxi":185
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-/* "/home/cdyer/cdec/python/src/mteval.pxi":187
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+static PyObject *__pyx_pf_5_cdec_2set_silent(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_yn) {
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-static PyObject *__pyx_pf_5_cdec_2_make_config(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_config) {
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   __Pyx_INCREF(__pyx_cur_scope->__pyx_v_config);
   __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_config);
   {
-    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_4generator17, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_6generator17, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_cur_scope);
     __Pyx_RefNannyFinishContext();
     return (PyObject *) gen;
@@ -16595,7 +16895,7 @@ static PyObject *__pyx_pf_5_cdec_2_make_config(CYTHON_UNUSED PyObject *__pyx_sel
   return __pyx_r;
 }
 
-static PyObject *__pyx_gb_5_cdec_4generator17(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
+static PyObject *__pyx_gb_5_cdec_6generator17(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
 {
   struct __pyx_obj_5_cdec___pyx_scope_struct_23__make_config *__pyx_cur_scope = ((struct __pyx_obj_5_cdec___pyx_scope_struct_23__make_config *)__pyx_generator->closure);
   PyObject *__pyx_r = NULL;
@@ -16623,25 +16923,25 @@ static PyObject *__pyx_gb_5_cdec_4generator17(__pyx_GeneratorObject *__pyx_gener
     return NULL;
   }
   __pyx_L3_first_run:;
-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "_cdec.pyx":29
+  /* "_cdec.pyx":32
  * 
  * def _make_config(config):
  *     for key, value in config.items():             # <<<<<<<<<<<<<<
  *         if isinstance(value, dict):
  *             for name, info in value.items():
  */
-  __pyx_t_1 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_config, __pyx_n_s__items); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 29; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_config, __pyx_n_s__items); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 29; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   if (PyList_CheckExact(__pyx_t_2) || PyTuple_CheckExact(__pyx_t_2)) {
     __pyx_t_1 = __pyx_t_2; __Pyx_INCREF(__pyx_t_1); __pyx_t_3 = 0;
     __pyx_t_4 = NULL;
   } else {
-    __pyx_t_3 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_t_2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 29; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_t_2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
     __pyx_t_4 = Py_TYPE(__pyx_t_1)->tp_iternext;
   }
@@ -16649,16 +16949,24 @@ static PyObject *__pyx_gb_5_cdec_4generator17(__pyx_GeneratorObject *__pyx_gener
   for (;;) {
     if (!__pyx_t_4 && PyList_CheckExact(__pyx_t_1)) {
       if (__pyx_t_3 >= PyList_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_2 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_3); __Pyx_INCREF(__pyx_t_2); __pyx_t_3++;
+      #else
+      __pyx_t_2 = PySequence_ITEM(__pyx_t_1, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else if (!__pyx_t_4 && PyTuple_CheckExact(__pyx_t_1)) {
       if (__pyx_t_3 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_2 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_3); __Pyx_INCREF(__pyx_t_2); __pyx_t_3++;
+      #else
+      __pyx_t_2 = PySequence_ITEM(__pyx_t_1, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else {
       __pyx_t_2 = __pyx_t_4(__pyx_t_1);
       if (unlikely(!__pyx_t_2)) {
         if (PyErr_Occurred()) {
           if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-          else {__pyx_filename = __pyx_f[0]; __pyx_lineno = 29; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          else {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         }
         break;
       }
@@ -16666,29 +16974,35 @@ static PyObject *__pyx_gb_5_cdec_4generator17(__pyx_GeneratorObject *__pyx_gener
     }
     if ((likely(PyTuple_CheckExact(__pyx_t_2))) || (PyList_CheckExact(__pyx_t_2))) {
       PyObject* sequence = __pyx_t_2;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      Py_ssize_t size = Py_SIZE(sequence);
+      #else
+      Py_ssize_t size = PySequence_Size(sequence);
+      #endif
+      if (unlikely(size != 2)) {
+        if (size > 2) __Pyx_RaiseTooManyValuesError(2);
+        else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
+        {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      }
+      #if CYTHON_COMPILING_IN_CPYTHON
       if (likely(PyTuple_CheckExact(sequence))) {
-        if (unlikely(PyTuple_GET_SIZE(sequence) != 2)) {
-          if (PyTuple_GET_SIZE(sequence) > 2) __Pyx_RaiseTooManyValuesError(2);
-          else __Pyx_RaiseNeedMoreValuesError(PyTuple_GET_SIZE(sequence));
-          {__pyx_filename = __pyx_f[0]; __pyx_lineno = 29; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-        }
         __pyx_t_5 = PyTuple_GET_ITEM(sequence, 0); 
         __pyx_t_6 = PyTuple_GET_ITEM(sequence, 1); 
       } else {
-        if (unlikely(PyList_GET_SIZE(sequence) != 2)) {
-          if (PyList_GET_SIZE(sequence) > 2) __Pyx_RaiseTooManyValuesError(2);
-          else __Pyx_RaiseNeedMoreValuesError(PyList_GET_SIZE(sequence));
-          {__pyx_filename = __pyx_f[0]; __pyx_lineno = 29; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-        }
         __pyx_t_5 = PyList_GET_ITEM(sequence, 0); 
         __pyx_t_6 = PyList_GET_ITEM(sequence, 1); 
       }
       __Pyx_INCREF(__pyx_t_5);
       __Pyx_INCREF(__pyx_t_6);
+      #else
+      __pyx_t_5 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-    } else {
+    } else
+    {
       Py_ssize_t index = -1;
-      __pyx_t_7 = PyObject_GetIter(__pyx_t_2); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 29; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = PyObject_GetIter(__pyx_t_2); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_7);
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
       __pyx_t_8 = Py_TYPE(__pyx_t_7)->tp_iternext;
@@ -16696,14 +17010,15 @@ static PyObject *__pyx_gb_5_cdec_4generator17(__pyx_GeneratorObject *__pyx_gener
       __Pyx_GOTREF(__pyx_t_5);
       index = 1; __pyx_t_6 = __pyx_t_8(__pyx_t_7); if (unlikely(!__pyx_t_6)) goto __pyx_L6_unpacking_failed;
       __Pyx_GOTREF(__pyx_t_6);
-      if (__Pyx_IternextUnpackEndCheck(__pyx_t_8(__pyx_t_7), 2) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 29; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      if (__Pyx_IternextUnpackEndCheck(__pyx_t_8(__pyx_t_7), 2) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = NULL;
       __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
       goto __pyx_L7_unpacking_done;
       __pyx_L6_unpacking_failed:;
       __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
-      if (PyErr_Occurred() && PyErr_ExceptionMatches(PyExc_StopIteration)) PyErr_Clear();
-      if (!PyErr_Occurred()) __Pyx_RaiseNeedMoreValuesError(index);
-      {__pyx_filename = __pyx_f[0]; __pyx_lineno = 29; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = NULL;
+      if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
+      {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __pyx_L7_unpacking_done:;
     }
     __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_key);
@@ -16717,7 +17032,7 @@ static PyObject *__pyx_gb_5_cdec_4generator17(__pyx_GeneratorObject *__pyx_gener
     __pyx_cur_scope->__pyx_v_value = __pyx_t_6;
     __pyx_t_6 = 0;
 
-    /* "_cdec.pyx":30
+    /* "_cdec.pyx":33
  * def _make_config(config):
  *     for key, value in config.items():
  *         if isinstance(value, dict):             # <<<<<<<<<<<<<<
@@ -16730,23 +17045,23 @@ static PyObject *__pyx_gb_5_cdec_4generator17(__pyx_GeneratorObject *__pyx_gener
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
     if (__pyx_t_9) {
 
-      /* "_cdec.pyx":31
+      /* "_cdec.pyx":34
  *     for key, value in config.items():
  *         if isinstance(value, dict):
  *             for name, info in value.items():             # <<<<<<<<<<<<<<
  *                 yield key, '%s %s' % (name, info)
  *         elif isinstance(value, list):
  */
-      __pyx_t_2 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_value, __pyx_n_s__items); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_value, __pyx_n_s__items); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_6 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_6);
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
       if (PyList_CheckExact(__pyx_t_6) || PyTuple_CheckExact(__pyx_t_6)) {
         __pyx_t_2 = __pyx_t_6; __Pyx_INCREF(__pyx_t_2); __pyx_t_10 = 0;
         __pyx_t_11 = NULL;
       } else {
-        __pyx_t_10 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_t_6); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_10 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_t_6); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
         __pyx_t_11 = Py_TYPE(__pyx_t_2)->tp_iternext;
       }
@@ -16754,16 +17069,24 @@ static PyObject *__pyx_gb_5_cdec_4generator17(__pyx_GeneratorObject *__pyx_gener
       for (;;) {
         if (!__pyx_t_11 && PyList_CheckExact(__pyx_t_2)) {
           if (__pyx_t_10 >= PyList_GET_SIZE(__pyx_t_2)) break;
+          #if CYTHON_COMPILING_IN_CPYTHON
           __pyx_t_6 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_10); __Pyx_INCREF(__pyx_t_6); __pyx_t_10++;
+          #else
+          __pyx_t_6 = PySequence_ITEM(__pyx_t_2, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+          #endif
         } else if (!__pyx_t_11 && PyTuple_CheckExact(__pyx_t_2)) {
           if (__pyx_t_10 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
+          #if CYTHON_COMPILING_IN_CPYTHON
           __pyx_t_6 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_10); __Pyx_INCREF(__pyx_t_6); __pyx_t_10++;
+          #else
+          __pyx_t_6 = PySequence_ITEM(__pyx_t_2, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+          #endif
         } else {
           __pyx_t_6 = __pyx_t_11(__pyx_t_2);
           if (unlikely(!__pyx_t_6)) {
             if (PyErr_Occurred()) {
               if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-              else {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              else {__pyx_filename = __pyx_f[0]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             }
             break;
           }
@@ -16771,29 +17094,35 @@ static PyObject *__pyx_gb_5_cdec_4generator17(__pyx_GeneratorObject *__pyx_gener
         }
         if ((likely(PyTuple_CheckExact(__pyx_t_6))) || (PyList_CheckExact(__pyx_t_6))) {
           PyObject* sequence = __pyx_t_6;
+          #if CYTHON_COMPILING_IN_CPYTHON
+          Py_ssize_t size = Py_SIZE(sequence);
+          #else
+          Py_ssize_t size = PySequence_Size(sequence);
+          #endif
+          if (unlikely(size != 2)) {
+            if (size > 2) __Pyx_RaiseTooManyValuesError(2);
+            else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
+            {__pyx_filename = __pyx_f[0]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          }
+          #if CYTHON_COMPILING_IN_CPYTHON
           if (likely(PyTuple_CheckExact(sequence))) {
-            if (unlikely(PyTuple_GET_SIZE(sequence) != 2)) {
-              if (PyTuple_GET_SIZE(sequence) > 2) __Pyx_RaiseTooManyValuesError(2);
-              else __Pyx_RaiseNeedMoreValuesError(PyTuple_GET_SIZE(sequence));
-              {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-            }
             __pyx_t_5 = PyTuple_GET_ITEM(sequence, 0); 
             __pyx_t_7 = PyTuple_GET_ITEM(sequence, 1); 
           } else {
-            if (unlikely(PyList_GET_SIZE(sequence) != 2)) {
-              if (PyList_GET_SIZE(sequence) > 2) __Pyx_RaiseTooManyValuesError(2);
-              else __Pyx_RaiseNeedMoreValuesError(PyList_GET_SIZE(sequence));
-              {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-            }
             __pyx_t_5 = PyList_GET_ITEM(sequence, 0); 
             __pyx_t_7 = PyList_GET_ITEM(sequence, 1); 
           }
           __Pyx_INCREF(__pyx_t_5);
           __Pyx_INCREF(__pyx_t_7);
+          #else
+          __pyx_t_5 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_7 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          #endif
           __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
-        } else {
+        } else
+        {
           Py_ssize_t index = -1;
-          __pyx_t_12 = PyObject_GetIter(__pyx_t_6); if (unlikely(!__pyx_t_12)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_12 = PyObject_GetIter(__pyx_t_6); if (unlikely(!__pyx_t_12)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_12);
           __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
           __pyx_t_8 = Py_TYPE(__pyx_t_12)->tp_iternext;
@@ -16801,14 +17130,15 @@ static PyObject *__pyx_gb_5_cdec_4generator17(__pyx_GeneratorObject *__pyx_gener
           __Pyx_GOTREF(__pyx_t_5);
           index = 1; __pyx_t_7 = __pyx_t_8(__pyx_t_12); if (unlikely(!__pyx_t_7)) goto __pyx_L11_unpacking_failed;
           __Pyx_GOTREF(__pyx_t_7);
-          if (__Pyx_IternextUnpackEndCheck(__pyx_t_8(__pyx_t_12), 2) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (__Pyx_IternextUnpackEndCheck(__pyx_t_8(__pyx_t_12), 2) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_8 = NULL;
           __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;
           goto __pyx_L12_unpacking_done;
           __pyx_L11_unpacking_failed:;
           __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;
-          if (PyErr_Occurred() && PyErr_ExceptionMatches(PyExc_StopIteration)) PyErr_Clear();
-          if (!PyErr_Occurred()) __Pyx_RaiseNeedMoreValuesError(index);
-          {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_8 = NULL;
+          if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
+          {__pyx_filename = __pyx_f[0]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __pyx_L12_unpacking_done:;
         }
         __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_name);
@@ -16822,14 +17152,14 @@ static PyObject *__pyx_gb_5_cdec_4generator17(__pyx_GeneratorObject *__pyx_gener
         __pyx_cur_scope->__pyx_v_info = __pyx_t_7;
         __pyx_t_7 = 0;
 
-        /* "_cdec.pyx":32
+        /* "_cdec.pyx":35
  *         if isinstance(value, dict):
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+        __pyx_t_6 = PyTuple_New(2); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 35; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -16837,10 +17167,10 @@ static PyObject *__pyx_gb_5_cdec_4generator17(__pyx_GeneratorObject *__pyx_gener
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-        __pyx_t_7 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_45), ((PyObject *)__pyx_t_6)); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_45), ((PyObject *)__pyx_t_6)); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 35; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __pyx_t_6 = PyTuple_New(2); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 35; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 35; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "_cdec.pyx":33
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-      /* "_cdec.pyx":34
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+        __pyx_t_10 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_cur_scope->__pyx_v_value); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 37; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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         if (!__pyx_t_11 && PyList_CheckExact(__pyx_t_2)) {
           if (__pyx_t_10 >= PyList_GET_SIZE(__pyx_t_2)) break;
+          #if CYTHON_COMPILING_IN_CPYTHON
           __pyx_t_6 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_10); __Pyx_INCREF(__pyx_t_6); __pyx_t_10++;
+          #else
+          __pyx_t_6 = PySequence_ITEM(__pyx_t_2, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 37; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+          #endif
         } else if (!__pyx_t_11 && PyTuple_CheckExact(__pyx_t_2)) {
           if (__pyx_t_10 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
+          #if CYTHON_COMPILING_IN_CPYTHON
           __pyx_t_6 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_10); __Pyx_INCREF(__pyx_t_6); __pyx_t_10++;
+          #else
+          __pyx_t_6 = PySequence_ITEM(__pyx_t_2, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 37; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+          #endif
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-              else {__pyx_filename = __pyx_f[0]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              else {__pyx_filename = __pyx_f[0]; __pyx_lineno = 37; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        /* "_cdec.pyx":35
+        /* "_cdec.pyx":38
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-        __pyx_t_6 = PyTuple_New(2); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 35; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_6 = PyTuple_New(2); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 38; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -16973,29 +17311,29 @@ static PyObject *__pyx_gb_5_cdec_4generator17(__pyx_GeneratorObject *__pyx_gener
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-        if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 35; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 38; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "_cdec.pyx":37
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+      __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 40; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 40; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __pyx_t_4 = __pyx_cur_scope->__pyx_t_3;
-      if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 37; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 40; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -17038,6 +17376,7 @@ static PyObject *__pyx_gb_5_cdec_4generator17(__pyx_GeneratorObject *__pyx_gener
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   __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
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 }
@@ -17047,16 +17386,16 @@ static int __pyx_pw_5_cdec_7Decoder_1__cinit__(PyObject *__pyx_v_self, PyObject
 static int __pyx_pw_5_cdec_7Decoder_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
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   PyObject *__pyx_v_config = 0;
-  static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__config_str,0};
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   __pyx_v_config = PyDict_New(); if (unlikely(!__pyx_v_config)) return -1;
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   {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__config_str,0};
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-    /* "_cdec.pyx":43
+    /* "_cdec.pyx":46
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-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, __pyx_v_config, values, pos_args, "__cinit__") < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, __pyx_v_config, values, pos_args, "__cinit__") < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 46; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
       }
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@@ -17094,7 +17433,7 @@ static int __pyx_pw_5_cdec_7Decoder_1__cinit__(PyObject *__pyx_v_self, PyObject
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("__cinit__", 0, 0, 1, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __Pyx_RaiseArgtupleInvalid("__cinit__", 0, 0, 1, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 46; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
   __Pyx_CLEAR(__pyx_v_config);
   __Pyx_AddTraceback("_cdec.Decoder.__cinit__", __pyx_clineno, __pyx_lineno, __pyx_filename);
@@ -17108,7 +17447,7 @@ static int __pyx_pw_5_cdec_7Decoder_1__cinit__(PyObject *__pyx_v_self, PyObject
 }
 static PyObject *__pyx_gb_5_cdec_7Decoder_9__cinit___2generator21(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
 
-/* "_cdec.pyx":54
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   __Pyx_INCREF(((PyObject *)__pyx_cur_scope->__pyx_outer_scope));
   __Pyx_GIVEREF(__pyx_cur_scope->__pyx_outer_scope);
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-    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_7Decoder_9__cinit___2generator21, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 54; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_7Decoder_9__cinit___2generator21, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 57; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -17171,16 +17510,16 @@ static PyObject *__pyx_gb_5_cdec_7Decoder_9__cinit___2generator21(__pyx_Generato
     return NULL;
   }
   __pyx_L3_first_run:;
-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 54; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s___make_config); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 54; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 57; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s___make_config); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 57; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (unlikely(!__pyx_cur_scope->__pyx_outer_scope->__pyx_v_config)) { __Pyx_RaiseClosureNameError("config"); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 57; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 57; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(__pyx_cur_scope->__pyx_outer_scope->__pyx_v_config);
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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[0]; __pyx_lineno = 57; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_4 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 57; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       if (__pyx_t_4 >= PyList_GET_SIZE(__pyx_t_2)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_3 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_4); __Pyx_INCREF(__pyx_t_3); __pyx_t_4++;
+      #else
+      __pyx_t_3 = PySequence_ITEM(__pyx_t_2, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 57; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
     } else if (!__pyx_t_5 && PyTuple_CheckExact(__pyx_t_2)) {
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+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_3 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_4); __Pyx_INCREF(__pyx_t_3); __pyx_t_4++;
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+      #endif
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-          else {__pyx_filename = __pyx_f[0]; __pyx_lineno = 54; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -17216,7 +17563,7 @@ static PyObject *__pyx_gb_5_cdec_7Decoder_9__cinit___2generator21(__pyx_Generato
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+    __pyx_t_3 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_46), __pyx_cur_scope->__pyx_v_kv); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 57; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+/* "_cdec.pyx":46
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   __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_config);
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-  /* "_cdec.pyx":49
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-    /* "_cdec.pyx":50
+    /* "_cdec.pyx":53
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+    __pyx_t_3 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_k_tuple_47), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 53; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "_cdec.pyx":51
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+    __pyx_t_1 = __Pyx_PyString_Equals(__pyx_t_3, ((PyObject *)__pyx_n_s__scfg), Py_NE); if (unlikely(__pyx_t_1 < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 54; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_4 = __Pyx_PyString_Equals(__pyx_t_3, ((PyObject *)__pyx_n_s__fst), Py_NE); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 54; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_1 = __Pyx_PyString_Equals(__pyx_t_3, ((PyObject *)__pyx_n_s__lextrans), Py_NE); if (unlikely(__pyx_t_1 < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 54; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_1 = __Pyx_PyString_Equals(__pyx_t_3, ((PyObject *)__pyx_n_s__tagger), Py_NE); if (unlikely(__pyx_t_1 < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 54; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_5 = __Pyx_PyString_Equals(__pyx_t_3, ((PyObject *)__pyx_n_s__lexalign), Py_NE); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 54; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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     __pyx_t_4 = __pyx_t_1;
     if (__pyx_t_4) {
 
-      /* "_cdec.pyx":53
+      /* "_cdec.pyx":56
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  *                     'csplit', 'tagger', 'lexalign'):
  *                 raise InvalidConfig('formalism "%s" unknown' % formalism)             # <<<<<<<<<<<<<<
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-      __pyx_t_3 = __Pyx_GetName(__pyx_m, __pyx_n_s__InvalidConfig); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 53; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = __Pyx_GetName(__pyx_m, __pyx_n_s__InvalidConfig); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 56; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
-      __pyx_t_2 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_48), __pyx_v_formalism); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 53; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_48), __pyx_v_formalism); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 56; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(((PyObject *)__pyx_t_2));
-      __pyx_t_6 = PyTuple_New(1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 53; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = PyTuple_New(1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 56; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_6);
       PyTuple_SET_ITEM(__pyx_t_6, 0, ((PyObject *)__pyx_t_2));
       __Pyx_GIVEREF(((PyObject *)__pyx_t_2));
       __pyx_t_2 = 0;
-      __pyx_t_2 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_6), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 53; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_6), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 56; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __Pyx_Raise(__pyx_t_2, 0, 0, 0);
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-      {__pyx_filename = __pyx_f[0]; __pyx_lineno = 53; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      {__pyx_filename = __pyx_f[0]; __pyx_lineno = 56; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       goto __pyx_L4;
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     __pyx_L4:;
 
-    /* "_cdec.pyx":54
+    /* "_cdec.pyx":57
  *                     'csplit', 'tagger', 'lexalign'):
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  *             config_str = '\n'.join('%s = %s' % kv for kv in _make_config(config))             # <<<<<<<<<<<<<<
  *         cdef istringstream* config_stream = new istringstream(config_str)
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-    __pyx_t_2 = PyObject_GetAttr(((PyObject *)__pyx_kp_s_39), __pyx_n_s__join); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 54; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyObject_GetAttr(((PyObject *)__pyx_kp_s_39), __pyx_n_s__join); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 57; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
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+    __pyx_t_6 = __pyx_pf_5_cdec_7Decoder_9__cinit___genexpr(((PyObject*)__pyx_cur_scope)); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 57; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 54; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 57; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_6 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 57; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   }
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-  /* "_cdec.pyx":55
+  /* "_cdec.pyx":58
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+  __pyx_t_7 = PyBytes_AsString(__pyx_v_config_str); if (unlikely((!__pyx_t_7) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 58; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "_cdec.pyx":56
+  /* "_cdec.pyx":59
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-  /* "_cdec.pyx":57
+  /* "_cdec.pyx":60
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  *         self.dec = new decoder.Decoder(config_stream)
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  */
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-  /* "_cdec.pyx":58
+  /* "_cdec.pyx":61
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-  __pyx_t_6 = __Pyx_tp_new(((PyObject*)__pyx_ptype_5_cdec_DenseVector)); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 58; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_6 = __Pyx_tp_new(((PyObject*)__pyx_ptype_5_cdec_DenseVector)); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (!(likely(__Pyx_TypeTest(__pyx_t_6, __pyx_ptype_5_cdec_DenseVector)))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_t_6 = 0;
 
-  /* "_cdec.pyx":59
+  /* "_cdec.pyx":62
  *         del config_stream
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@@ -17470,7 +17818,7 @@ static int __pyx_pf_5_cdec_7Decoder___cinit__(struct __pyx_obj_5_cdec_Decoder *_
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   __pyx_v_self->weights->vector = (&__pyx_v_self->dec->CurrentWeightVector());
 
-  /* "_cdec.pyx":60
+  /* "_cdec.pyx":63
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  *         self.weights.owned = True             # <<<<<<<<<<<<<<
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-/* "_cdec.pyx":62
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-  /* "_cdec.pyx":63
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   return __pyx_r;
 }
 
-/* "_cdec.pyx":66
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  *     property weights:
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-  /* "_cdec.pyx":67
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@@ -17582,7 +17930,7 @@ static int __pyx_pw_5_cdec_7Decoder_7weights_3__set__(PyObject *__pyx_v_self, Py
   return __pyx_r;
 }
 
-/* "_cdec.pyx":69
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@@ -17609,7 +17957,7 @@ static int __pyx_pf_5_cdec_7Decoder_7weights_2__set__(struct __pyx_obj_5_cdec_De
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-  /* "_cdec.pyx":70
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-    /* "_cdec.pyx":71
+    /* "_cdec.pyx":74
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     goto __pyx_L3;
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-  /* "_cdec.pyx":72
+  /* "_cdec.pyx":75
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-    /* "_cdec.pyx":73
+    /* "_cdec.pyx":76
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-    /* "_cdec.pyx":74
+    /* "_cdec.pyx":77
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-  /* "_cdec.pyx":75
+  /* "_cdec.pyx":78
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-    /* "_cdec.pyx":76
+    /* "_cdec.pyx":79
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     __pyx_v_self->weights->vector->clear();
 
-    /* "_cdec.pyx":77
+    /* "_cdec.pyx":80
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+    __pyx_t_1 = PyObject_GetAttr(__pyx_v_weights, __pyx_n_s__items); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 80; __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[0]; __pyx_lineno = 80; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_4 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 80; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -17712,16 +18060,24 @@ static int __pyx_pf_5_cdec_7Decoder_7weights_2__set__(struct __pyx_obj_5_cdec_De
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       if (!__pyx_t_5 && PyList_CheckExact(__pyx_t_1)) {
         if (__pyx_t_4 >= PyList_GET_SIZE(__pyx_t_1)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
         __pyx_t_3 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_4); __Pyx_INCREF(__pyx_t_3); __pyx_t_4++;
+        #else
+        __pyx_t_3 = PySequence_ITEM(__pyx_t_1, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 80; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+        #endif
       } else if (!__pyx_t_5 && PyTuple_CheckExact(__pyx_t_1)) {
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+        #if CYTHON_COMPILING_IN_CPYTHON
         __pyx_t_3 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_4); __Pyx_INCREF(__pyx_t_3); __pyx_t_4++;
+        #else
+        __pyx_t_3 = PySequence_ITEM(__pyx_t_1, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 80; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+        #endif
       } else {
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-            else {__pyx_filename = __pyx_f[0]; __pyx_lineno = 77; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            else {__pyx_filename = __pyx_f[0]; __pyx_lineno = 80; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -17729,29 +18085,35 @@ static int __pyx_pf_5_cdec_7Decoder_7weights_2__set__(struct __pyx_obj_5_cdec_De
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       if ((likely(PyTuple_CheckExact(__pyx_t_3))) || (PyList_CheckExact(__pyx_t_3))) {
         PyObject* sequence = __pyx_t_3;
+        #if CYTHON_COMPILING_IN_CPYTHON
+        Py_ssize_t size = Py_SIZE(sequence);
+        #else
+        Py_ssize_t size = PySequence_Size(sequence);
+        #endif
+        if (unlikely(size != 2)) {
+          if (size > 2) __Pyx_RaiseTooManyValuesError(2);
+          else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
+          {__pyx_filename = __pyx_f[0]; __pyx_lineno = 80; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        }
+        #if CYTHON_COMPILING_IN_CPYTHON
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-            if (PyList_GET_SIZE(sequence) > 2) __Pyx_RaiseTooManyValuesError(2);
-            else __Pyx_RaiseNeedMoreValuesError(PyList_GET_SIZE(sequence));
-            {__pyx_filename = __pyx_f[0]; __pyx_lineno = 77; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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           __pyx_t_7 = PyList_GET_ITEM(sequence, 1); 
         }
         __Pyx_INCREF(__pyx_t_6);
         __Pyx_INCREF(__pyx_t_7);
+        #else
+        __pyx_t_6 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 80; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 80; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #endif
         __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-      } else {
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+      {
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-        __pyx_t_8 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 77; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_8 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 80; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -17759,14 +18121,15 @@ static int __pyx_pf_5_cdec_7Decoder_7weights_2__set__(struct __pyx_obj_5_cdec_De
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-        if (__Pyx_IternextUnpackEndCheck(__pyx_t_9(__pyx_t_8), 2) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 77; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        if (__Pyx_IternextUnpackEndCheck(__pyx_t_9(__pyx_t_8), 2) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 80; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_9 = NULL;
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-        if (PyErr_Occurred() && PyErr_ExceptionMatches(PyExc_StopIteration)) PyErr_Clear();
-        if (!PyErr_Occurred()) __Pyx_RaiseNeedMoreValuesError(index);
-        {__pyx_filename = __pyx_f[0]; __pyx_lineno = 77; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_9 = NULL;
+        if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
+        {__pyx_filename = __pyx_f[0]; __pyx_lineno = 80; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -17776,40 +18139,40 @@ static int __pyx_pf_5_cdec_7Decoder_7weights_2__set__(struct __pyx_obj_5_cdec_De
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-      /* "_cdec.pyx":78
+      /* "_cdec.pyx":81
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  *                 for fname, fval in weights.items():
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+      if (PyObject_SetItem(((PyObject *)__pyx_v_self->weights), __pyx_v_fname, __pyx_v_fval) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 81; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "_cdec.pyx":80
+    /* "_cdec.pyx":83
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+    __pyx_t_1 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_49), ((PyObject *)Py_TYPE(__pyx_v_weights))); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 83; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 83; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_1 = PyObject_Call(__pyx_builtin_TypeError, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 83; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 80; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 83; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -17841,42 +18204,53 @@ static PyObject *__pyx_pw_5_cdec_7Decoder_9formalism_1__get__(PyObject *__pyx_v_
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 }
 
-/* "_cdec.pyx":83
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  *     property formalism:
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 static PyObject *__pyx_pf_5_cdec_7Decoder_9formalism___get__(struct __pyx_obj_5_cdec_Decoder *__pyx_v_self) {
-  CYTHON_UNUSED const boost::program_options::variables_map *__pyx_v_conf;
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   __Pyx_RefNannyDeclarations
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+  int __pyx_lineno = 0;
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+  int __pyx_clineno = 0;
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-  /* "_cdec.pyx":84
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- *             #return conf[0]['formalism']
- *             return None
+ *             return conf[0]['formalism'].as_str().c_str()
+ * 
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-  /* "_cdec.pyx":86
+  /* "_cdec.pyx":88
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- *             return None             # <<<<<<<<<<<<<<
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-  __Pyx_INCREF(Py_None);
-  __pyx_r = Py_None;
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+  __Pyx_GOTREF(((PyObject *)__pyx_t_1));
+  __pyx_r = ((PyObject *)__pyx_t_1);
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   __pyx_r = Py_None; __Pyx_INCREF(Py_None);
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 }
 
-/* "_cdec.pyx":88
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+    __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_2 = PyObject_Call(__pyx_builtin_open, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_3 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s____exit__); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    __pyx_t_1 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s____enter__); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 89; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    __pyx_t_1 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s____enter__); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+    __pyx_t_4 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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           __pyx_v_fp = __pyx_t_4;
           __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
 
-          /* "_cdec.pyx":90
+          /* "_cdec.pyx":92
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             __pyx_t_4 = __pyx_v_fp; __Pyx_INCREF(__pyx_t_4); __pyx_t_8 = 0;
             __pyx_t_9 = NULL;
           } else {
-            __pyx_t_8 = -1; __pyx_t_4 = PyObject_GetIter(__pyx_v_fp); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 90; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+            __pyx_t_8 = -1; __pyx_t_4 = PyObject_GetIter(__pyx_v_fp); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 92; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
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             if (!__pyx_t_9 && PyList_CheckExact(__pyx_t_4)) {
               if (__pyx_t_8 >= PyList_GET_SIZE(__pyx_t_4)) break;
+              #if CYTHON_COMPILING_IN_CPYTHON
               __pyx_t_2 = PyList_GET_ITEM(__pyx_t_4, __pyx_t_8); __Pyx_INCREF(__pyx_t_2); __pyx_t_8++;
+              #else
+              __pyx_t_2 = PySequence_ITEM(__pyx_t_4, __pyx_t_8); __pyx_t_8++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 92; __pyx_clineno = __LINE__; goto __pyx_L7_error;};
+              #endif
             } else if (!__pyx_t_9 && PyTuple_CheckExact(__pyx_t_4)) {
               if (__pyx_t_8 >= PyTuple_GET_SIZE(__pyx_t_4)) break;
+              #if CYTHON_COMPILING_IN_CPYTHON
               __pyx_t_2 = PyTuple_GET_ITEM(__pyx_t_4, __pyx_t_8); __Pyx_INCREF(__pyx_t_2); __pyx_t_8++;
+              #else
+              __pyx_t_2 = PySequence_ITEM(__pyx_t_4, __pyx_t_8); __pyx_t_8++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 92; __pyx_clineno = __LINE__; goto __pyx_L7_error;};
+              #endif
             } else {
               __pyx_t_2 = __pyx_t_9(__pyx_t_4);
               if (unlikely(!__pyx_t_2)) {
                 if (PyErr_Occurred()) {
                   if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                  else {__pyx_filename = __pyx_f[0]; __pyx_lineno = 90; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+                  else {__pyx_filename = __pyx_f[0]; __pyx_lineno = 92; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
                 }
                 break;
               }
@@ -18002,25 +18384,25 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_4read_weights(struct __pyx_obj_5_cdec_
             __pyx_v_line = __pyx_t_2;
             __pyx_t_2 = 0;
 
-            /* "_cdec.pyx":91
+            /* "_cdec.pyx":93
  *         with open(weights) as fp:
  *             for line in fp:
  *                 if line.strip().startswith('#'): continue             # <<<<<<<<<<<<<<
  *                 fname, value = line.split()
  *                 self.weights[fname.strip()] = float(value)
  */
-            __pyx_t_2 = PyObject_GetAttr(__pyx_v_line, __pyx_n_s__strip); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+            __pyx_t_2 = PyObject_GetAttr(__pyx_v_line, __pyx_n_s__strip); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 93; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
             __Pyx_GOTREF(__pyx_t_2);
-            __pyx_t_1 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+            __pyx_t_1 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 93; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
             __Pyx_GOTREF(__pyx_t_1);
             __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-            __pyx_t_2 = PyObject_GetAttr(__pyx_t_1, __pyx_n_s__startswith); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+            __pyx_t_2 = PyObject_GetAttr(__pyx_t_1, __pyx_n_s__startswith); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 93; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
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-            __pyx_t_1 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_k_tuple_51), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+            __pyx_t_1 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_k_tuple_51), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 93; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
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-            __pyx_t_10 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_10 < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+            __pyx_t_10 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_10 < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 93; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
             __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
             if (__pyx_t_10) {
               goto __pyx_L16_continue;
@@ -18028,43 +18410,49 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_4read_weights(struct __pyx_obj_5_cdec_
             }
             __pyx_L18:;
 
-            /* "_cdec.pyx":92
+            /* "_cdec.pyx":94
  *             for line in fp:
  *                 if line.strip().startswith('#'): continue
  *                 fname, value = line.split()             # <<<<<<<<<<<<<<
  *                 self.weights[fname.strip()] = float(value)
  * 
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-            __pyx_t_1 = PyObject_GetAttr(__pyx_v_line, __pyx_n_s__split); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 92; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+            __pyx_t_1 = PyObject_GetAttr(__pyx_v_line, __pyx_n_s__split); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 94; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
             __Pyx_GOTREF(__pyx_t_1);
-            __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 92; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+            __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 94; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
             __Pyx_GOTREF(__pyx_t_2);
             __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
             if ((likely(PyTuple_CheckExact(__pyx_t_2))) || (PyList_CheckExact(__pyx_t_2))) {
               PyObject* sequence = __pyx_t_2;
+              #if CYTHON_COMPILING_IN_CPYTHON
+              Py_ssize_t size = Py_SIZE(sequence);
+              #else
+              Py_ssize_t size = PySequence_Size(sequence);
+              #endif
+              if (unlikely(size != 2)) {
+                if (size > 2) __Pyx_RaiseTooManyValuesError(2);
+                else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
+                {__pyx_filename = __pyx_f[0]; __pyx_lineno = 94; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+              }
+              #if CYTHON_COMPILING_IN_CPYTHON
               if (likely(PyTuple_CheckExact(sequence))) {
-                if (unlikely(PyTuple_GET_SIZE(sequence) != 2)) {
-                  if (PyTuple_GET_SIZE(sequence) > 2) __Pyx_RaiseTooManyValuesError(2);
-                  else __Pyx_RaiseNeedMoreValuesError(PyTuple_GET_SIZE(sequence));
-                  {__pyx_filename = __pyx_f[0]; __pyx_lineno = 92; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
-                }
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                 __pyx_t_11 = PyTuple_GET_ITEM(sequence, 1); 
               } else {
-                if (unlikely(PyList_GET_SIZE(sequence) != 2)) {
-                  if (PyList_GET_SIZE(sequence) > 2) __Pyx_RaiseTooManyValuesError(2);
-                  else __Pyx_RaiseNeedMoreValuesError(PyList_GET_SIZE(sequence));
-                  {__pyx_filename = __pyx_f[0]; __pyx_lineno = 92; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
-                }
                 __pyx_t_1 = PyList_GET_ITEM(sequence, 0); 
                 __pyx_t_11 = PyList_GET_ITEM(sequence, 1); 
               }
               __Pyx_INCREF(__pyx_t_1);
               __Pyx_INCREF(__pyx_t_11);
+              #else
+              __pyx_t_1 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 94; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+              __pyx_t_11 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 94; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+              #endif
               __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-            } else {
+            } else
+            {
               Py_ssize_t index = -1;
-              __pyx_t_12 = PyObject_GetIter(__pyx_t_2); if (unlikely(!__pyx_t_12)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 92; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+              __pyx_t_12 = PyObject_GetIter(__pyx_t_2); if (unlikely(!__pyx_t_12)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 94; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
               __Pyx_GOTREF(__pyx_t_12);
               __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
               __pyx_t_13 = Py_TYPE(__pyx_t_12)->tp_iternext;
@@ -18072,14 +18460,15 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_4read_weights(struct __pyx_obj_5_cdec_
               __Pyx_GOTREF(__pyx_t_1);
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               __Pyx_GOTREF(__pyx_t_11);
-              if (__Pyx_IternextUnpackEndCheck(__pyx_t_13(__pyx_t_12), 2) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 92; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+              if (__Pyx_IternextUnpackEndCheck(__pyx_t_13(__pyx_t_12), 2) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 94; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+              __pyx_t_13 = NULL;
               __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;
               goto __pyx_L20_unpacking_done;
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               __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;
-              if (PyErr_Occurred() && PyErr_ExceptionMatches(PyExc_StopIteration)) PyErr_Clear();
-              if (!PyErr_Occurred()) __Pyx_RaiseNeedMoreValuesError(index);
-              {__pyx_filename = __pyx_f[0]; __pyx_lineno = 92; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+              __pyx_t_13 = NULL;
+              if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
+              {__pyx_filename = __pyx_f[0]; __pyx_lineno = 94; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
               __pyx_L20_unpacking_done:;
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             __Pyx_XDECREF(__pyx_v_fname);
@@ -18089,22 +18478,22 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_4read_weights(struct __pyx_obj_5_cdec_
             __pyx_v_value = __pyx_t_11;
             __pyx_t_11 = 0;
 
-            /* "_cdec.pyx":93
+            /* "_cdec.pyx":95
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  *                 self.weights[fname.strip()] = float(value)             # <<<<<<<<<<<<<<
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  *     def translate(self, sentence, grammar=None):
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-            __pyx_t_14 = __Pyx_PyObject_AsDouble(__pyx_v_value); if (unlikely(__pyx_t_14 == ((double)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 93; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
-            __pyx_t_2 = PyFloat_FromDouble(__pyx_t_14); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 93; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+            __pyx_t_14 = __Pyx_PyObject_AsDouble(__pyx_v_value); if (unlikely(__pyx_t_14 == ((double)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 95; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+            __pyx_t_2 = PyFloat_FromDouble(__pyx_t_14); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 95; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
             __Pyx_GOTREF(__pyx_t_2);
-            __pyx_t_11 = PyObject_GetAttr(__pyx_v_fname, __pyx_n_s__strip); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 93; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+            __pyx_t_11 = PyObject_GetAttr(__pyx_v_fname, __pyx_n_s__strip); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 95; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
             __Pyx_GOTREF(__pyx_t_11);
-            __pyx_t_1 = PyObject_Call(__pyx_t_11, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 93; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+            __pyx_t_1 = PyObject_Call(__pyx_t_11, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 95; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
             __Pyx_GOTREF(__pyx_t_1);
             __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
-            if (PyObject_SetItem(((PyObject *)__pyx_v_self->weights), __pyx_t_1, __pyx_t_2) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 93; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
+            if (PyObject_SetItem(((PyObject *)__pyx_v_self->weights), __pyx_t_1, __pyx_t_2) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 95; __pyx_clineno = __LINE__; goto __pyx_L7_error;}
             __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
             __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
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@@ -18122,7 +18511,7 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_4read_weights(struct __pyx_obj_5_cdec_
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         __Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0;
 
-        /* "_cdec.pyx":89
+        /* "_cdec.pyx":91
  * 
  *     def read_weights(self, weights):
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@@ -18131,11 +18520,11 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_4read_weights(struct __pyx_obj_5_cdec_
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         /*except:*/ {
           __Pyx_AddTraceback("_cdec.Decoder.read_weights", __pyx_clineno, __pyx_lineno, __pyx_filename);
-          if (__Pyx_GetException(&__pyx_t_4, &__pyx_t_2, &__pyx_t_1) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 89; __pyx_clineno = __LINE__; goto __pyx_L9_except_error;}
+          if (__Pyx_GetException(&__pyx_t_4, &__pyx_t_2, &__pyx_t_1) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L9_except_error;}
           __Pyx_GOTREF(__pyx_t_4);
           __Pyx_GOTREF(__pyx_t_2);
           __Pyx_GOTREF(__pyx_t_1);
-          __pyx_t_11 = PyTuple_New(3); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 89; __pyx_clineno = __LINE__; goto __pyx_L9_except_error;}
+          __pyx_t_11 = PyTuple_New(3); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L9_except_error;}
           __Pyx_GOTREF(__pyx_t_11);
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-            {__pyx_filename = __pyx_f[0]; __pyx_lineno = 89; __pyx_clineno = __LINE__; goto __pyx_L9_except_error;}
+            {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L9_except_error;}
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@@ -18188,11 +18577,11 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_4read_weights(struct __pyx_obj_5_cdec_
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-        if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 89; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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 static PyObject *__pyx_pw_5_cdec_7Decoder_7translate(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
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   PyObject *__pyx_v_grammar = 0;
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-    /* "_cdec.pyx":95
+    /* "_cdec.pyx":97
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         case  0:
-        values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__sentence);
-        if (likely(values[0])) kw_args--;
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__sentence)) != 0)) kw_args--;
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@@ -18264,7 +18652,7 @@ static PyObject *__pyx_pw_5_cdec_7Decoder_7translate(PyObject *__pyx_v_self, PyO
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+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "translate") < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 97; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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@@ -18279,7 +18667,7 @@ static PyObject *__pyx_pw_5_cdec_7Decoder_7translate(PyObject *__pyx_v_self, PyO
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+  __Pyx_RaiseArgtupleInvalid("translate", 0, 1, 2, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 97; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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@@ -18307,7 +18695,7 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_6translate(struct __pyx_obj_5_cdec_Dec
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-  /* "_cdec.pyx":97
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@@ -18329,19 +18717,19 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_6translate(struct __pyx_obj_5_cdec_Dec
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-    /* "_cdec.pyx":98
+    /* "_cdec.pyx":100
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+    __pyx_t_5 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    __pyx_t_1 = PyBytes_FromString(__pyx_f_5_cdec_as_str(__pyx_t_5, NULL)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 98; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyBytes_FromString(__pyx_f_5_cdec_as_str(__pyx_t_5, NULL)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "_cdec.pyx":99
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@@ -18362,62 +18750,62 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_6translate(struct __pyx_obj_5_cdec_Dec
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-    /* "_cdec.pyx":100
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+    if (!(likely(PyBytes_CheckExact(__pyx_t_5))||((__pyx_t_5) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected bytes, got %.200s", Py_TYPE(__pyx_t_5)->tp_name), 0))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "_cdec.pyx":102
+    /* "_cdec.pyx":104
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+    __pyx_t_5 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_53), ((PyObject *)Py_TYPE(__pyx_v_sentence))); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_5 = PyObject_Call(__pyx_builtin_TypeError, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "_cdec.pyx":103
+  /* "_cdec.pyx":105
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-  __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_v_grammar); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_v_grammar); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 105; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "_cdec.pyx":104
+    /* "_cdec.pyx":106
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@@ -18439,7 +18827,7 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_6translate(struct __pyx_obj_5_cdec_Dec
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-      /* "_cdec.pyx":105
+      /* "_cdec.pyx":107
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@@ -18451,19 +18839,19 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_6translate(struct __pyx_obj_5_cdec_Dec
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-      /* "_cdec.pyx":107
+      /* "_cdec.pyx":109
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-      __pyx_t_5 = PyTuple_New(1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyTuple_New(1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_TextGrammar)), ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_TextGrammar)), ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -18474,7 +18862,7 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_6translate(struct __pyx_obj_5_cdec_Dec
   }
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-  /* "_cdec.pyx":108
+  /* "_cdec.pyx":110
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-  /* "_cdec.pyx":109
+  /* "_cdec.pyx":111
  *                 self.dec.AddSupplementalGrammar(TextGrammar(grammar).grammar[0])
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-  __pyx_t_6 = PyBytes_AsString(((PyObject *)__pyx_v_input_str)); if (unlikely((!__pyx_t_6) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_6 = PyBytes_AsString(((PyObject *)__pyx_v_input_str)); if (unlikely((!__pyx_t_6) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_self->dec->Decode(std::string(__pyx_t_6), (&__pyx_v_observer));
 
-  /* "_cdec.pyx":110
+  /* "_cdec.pyx":112
  *         cdef decoder.BasicObserver observer = decoder.BasicObserver()
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@@ -18503,38 +18891,38 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_6translate(struct __pyx_obj_5_cdec_Dec
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-    /* "_cdec.pyx":111
+    /* "_cdec.pyx":113
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  *             raise ParseFailed()             # <<<<<<<<<<<<<<
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-    __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__ParseFailed); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__ParseFailed); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
-    __pyx_t_5 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_5);
     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
     __Pyx_Raise(__pyx_t_5, 0, 0, 0);
     __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     goto __pyx_L6;
   }
   __pyx_L6:;
 
-  /* "_cdec.pyx":112
+  /* "_cdec.pyx":114
  *         if observer.hypergraph == NULL:
  *             raise ParseFailed()
  *         cdef Hypergraph hg = Hypergraph()             # <<<<<<<<<<<<<<
  *         hg.hg = new hypergraph.Hypergraph(observer.hypergraph[0])
  *         return hg
  */
-  __pyx_t_5 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_Hypergraph)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_5 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_Hypergraph)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_5);
   __pyx_v_hg = ((struct __pyx_obj_5_cdec_Hypergraph *)__pyx_t_5);
   __pyx_t_5 = 0;
 
-  /* "_cdec.pyx":113
+  /* "_cdec.pyx":115
  *             raise ParseFailed()
  *         cdef Hypergraph hg = Hypergraph()
  *         hg.hg = new hypergraph.Hypergraph(observer.hypergraph[0])             # <<<<<<<<<<<<<<
@@ -18542,7 +18930,7 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_6translate(struct __pyx_obj_5_cdec_Dec
  */
   __pyx_v_hg->hg = new Hypergraph((__pyx_v_observer.hypergraph[0]));
 
-  /* "_cdec.pyx":114
+  /* "_cdec.pyx":116
  *         cdef Hypergraph hg = Hypergraph()
  *         hg.hg = new hypergraph.Hypergraph(observer.hypergraph[0])
  *         return hg             # <<<<<<<<<<<<<<
@@ -18567,7 +18955,7 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_6translate(struct __pyx_obj_5_cdec_Dec
   return __pyx_r;
 }
 
-static PyObject *__pyx_tp_new_5_cdec_DenseVector(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_DenseVector(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
   return o;
@@ -18764,7 +19152,7 @@ static PyTypeObject __pyx_type_5_cdec_DenseVector = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec_SparseVector(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_SparseVector(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
   return o;
@@ -18961,7 +19349,7 @@ static PyTypeObject __pyx_type_5_cdec_SparseVector = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec_NT(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_NT(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec_NT *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -18994,11 +19382,11 @@ static int __pyx_tp_clear_5_cdec_NT(PyObject *o) {
   return 0;
 }
 
-static PyObject *__pyx_getprop_5_cdec_2NT_cat(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_2NT_cat(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_2NT_3cat_1__get__(o);
 }
 
-static int __pyx_setprop_5_cdec_2NT_cat(PyObject *o, PyObject *v, void *x) {
+static int __pyx_setprop_5_cdec_2NT_cat(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
   if (v) {
     return __pyx_pw_5_cdec_2NT_3cat_3__set__(o, v);
   }
@@ -19007,11 +19395,11 @@ static int __pyx_setprop_5_cdec_2NT_cat(PyObject *o, PyObject *v, void *x) {
   }
 }
 
-static PyObject *__pyx_getprop_5_cdec_2NT_ref(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_2NT_ref(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_2NT_3ref_1__get__(o);
 }
 
-static int __pyx_setprop_5_cdec_2NT_ref(PyObject *o, PyObject *v, void *x) {
+static int __pyx_setprop_5_cdec_2NT_ref(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
   if (v) {
     return __pyx_pw_5_cdec_2NT_3ref_3__set__(o, v);
   }
@@ -19185,7 +19573,7 @@ static PyTypeObject __pyx_type_5_cdec_NT = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec_NTRef(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_NTRef(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
   return o;
@@ -19195,11 +19583,11 @@ static void __pyx_tp_dealloc_5_cdec_NTRef(PyObject *o) {
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_5NTRef_ref(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_5NTRef_ref(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_5NTRef_3ref_1__get__(o);
 }
 
-static int __pyx_setprop_5_cdec_5NTRef_ref(PyObject *o, PyObject *v, void *x) {
+static int __pyx_setprop_5_cdec_5NTRef_ref(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
   if (v) {
     return __pyx_pw_5_cdec_5NTRef_3ref_3__set__(o, v);
   }
@@ -19372,7 +19760,7 @@ static PyTypeObject __pyx_type_5_cdec_NTRef = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec_TRule(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_TRule(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
   return o;
@@ -19391,15 +19779,15 @@ static void __pyx_tp_dealloc_5_cdec_TRule(PyObject *o) {
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_5TRule_arity(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_5TRule_arity(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_5TRule_5arity_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_5TRule_f(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_5TRule_f(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_5TRule_1f_1__get__(o);
 }
 
-static int __pyx_setprop_5_cdec_5TRule_f(PyObject *o, PyObject *v, void *x) {
+static int __pyx_setprop_5_cdec_5TRule_f(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
   if (v) {
     return __pyx_pw_5_cdec_5TRule_1f_3__set__(o, v);
   }
@@ -19409,11 +19797,11 @@ static int __pyx_setprop_5_cdec_5TRule_f(PyObject *o, PyObject *v, void *x) {
   }
 }
 
-static PyObject *__pyx_getprop_5_cdec_5TRule_e(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_5TRule_e(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_5TRule_1e_1__get__(o);
 }
 
-static int __pyx_setprop_5_cdec_5TRule_e(PyObject *o, PyObject *v, void *x) {
+static int __pyx_setprop_5_cdec_5TRule_e(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
   if (v) {
     return __pyx_pw_5_cdec_5TRule_1e_3__set__(o, v);
   }
@@ -19423,11 +19811,11 @@ static int __pyx_setprop_5_cdec_5TRule_e(PyObject *o, PyObject *v, void *x) {
   }
 }
 
-static PyObject *__pyx_getprop_5_cdec_5TRule_a(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_5TRule_a(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_5TRule_1a_1__get__(o);
 }
 
-static int __pyx_setprop_5_cdec_5TRule_a(PyObject *o, PyObject *v, void *x) {
+static int __pyx_setprop_5_cdec_5TRule_a(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
   if (v) {
     return __pyx_pw_5_cdec_5TRule_1a_4__set__(o, v);
   }
@@ -19437,11 +19825,11 @@ static int __pyx_setprop_5_cdec_5TRule_a(PyObject *o, PyObject *v, void *x) {
   }
 }
 
-static PyObject *__pyx_getprop_5_cdec_5TRule_scores(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_5TRule_scores(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_5TRule_6scores_1__get__(o);
 }
 
-static int __pyx_setprop_5_cdec_5TRule_scores(PyObject *o, PyObject *v, void *x) {
+static int __pyx_setprop_5_cdec_5TRule_scores(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
   if (v) {
     return __pyx_pw_5_cdec_5TRule_6scores_3__set__(o, v);
   }
@@ -19451,11 +19839,11 @@ static int __pyx_setprop_5_cdec_5TRule_scores(PyObject *o, PyObject *v, void *x)
   }
 }
 
-static PyObject *__pyx_getprop_5_cdec_5TRule_lhs(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_5TRule_lhs(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_5TRule_3lhs_1__get__(o);
 }
 
-static int __pyx_setprop_5_cdec_5TRule_lhs(PyObject *o, PyObject *v, void *x) {
+static int __pyx_setprop_5_cdec_5TRule_lhs(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
   if (v) {
     return __pyx_pw_5_cdec_5TRule_3lhs_3__set__(o, v);
   }
@@ -19761,7 +20149,11 @@ static PyTypeObject __pyx_type_5_cdec_MRule = {
   &__pyx_tp_as_mapping_MRule, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
+  #if CYTHON_COMPILING_IN_PYPY
+  __pyx_pw_5_cdec_5TRule_5__str__, /*tp_str*/
+  #else
   0, /*tp_str*/
+  #endif
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   &__pyx_tp_as_buffer_MRule, /*tp_as_buffer*/
@@ -19797,7 +20189,7 @@ static PyTypeObject __pyx_type_5_cdec_MRule = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec_Grammar(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_Grammar(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
   return o;
@@ -19816,11 +20208,11 @@ static void __pyx_tp_dealloc_5_cdec_Grammar(PyObject *o) {
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_7Grammar_name(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_7Grammar_name(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_7Grammar_4name_1__get__(o);
 }
 
-static int __pyx_setprop_5_cdec_7Grammar_name(PyObject *o, PyObject *v, void *x) {
+static int __pyx_setprop_5_cdec_7Grammar_name(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
   if (v) {
     return __pyx_pw_5_cdec_7Grammar_4name_3__set__(o, v);
   }
@@ -20134,7 +20526,11 @@ static PyTypeObject __pyx_type_5_cdec_TextGrammar = {
   0, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
+  #if CYTHON_COMPILING_IN_PYPY
+  __pyx_pw_5_cdec_7Grammar_3__iter__, /*tp_iter*/
+  #else
   0, /*tp_iter*/
+  #endif
   0, /*tp_iternext*/
   __pyx_methods_5_cdec_TextGrammar, /*tp_methods*/
   0, /*tp_members*/
@@ -20159,10 +20555,14 @@ static PyTypeObject __pyx_type_5_cdec_TextGrammar = {
   0, /*tp_version_tag*/
   #endif
 };
+static struct __pyx_vtabstruct_5_cdec_Hypergraph __pyx_vtable_5_cdec_Hypergraph;
 
-static PyObject *__pyx_tp_new_5_cdec_Hypergraph(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_Hypergraph(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec_Hypergraph *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec_Hypergraph *)o);
+  p->__pyx_vtab = __pyx_vtabptr_5_cdec_Hypergraph;
   return o;
 }
 
@@ -20179,19 +20579,19 @@ static void __pyx_tp_dealloc_5_cdec_Hypergraph(PyObject *o) {
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_10Hypergraph_edges(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_10Hypergraph_edges(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_10Hypergraph_5edges_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_10Hypergraph_nodes(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_10Hypergraph_nodes(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_10Hypergraph_5nodes_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_10Hypergraph_goal(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_10Hypergraph_goal(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_10Hypergraph_4goal_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_10Hypergraph_npaths(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_10Hypergraph_npaths(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_10Hypergraph_6npaths_1__get__(o);
 }
 
@@ -20376,7 +20776,7 @@ static PyTypeObject __pyx_type_5_cdec_Hypergraph = {
 };
 static struct __pyx_vtabstruct_5_cdec_HypergraphEdge __pyx_vtable_5_cdec_HypergraphEdge;
 
-static PyObject *__pyx_tp_new_5_cdec_HypergraphEdge(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_HypergraphEdge(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec_HypergraphEdge *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -20410,31 +20810,31 @@ static int __pyx_tp_clear_5_cdec_HypergraphEdge(PyObject *o) {
   return 0;
 }
 
-static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_head_node(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_head_node(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_14HypergraphEdge_9head_node_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_tail_nodes(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_tail_nodes(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_14HypergraphEdge_10tail_nodes_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_span(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_span(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_14HypergraphEdge_4span_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_feature_values(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_feature_values(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_14HypergraphEdge_14feature_values_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_prob(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_prob(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_14HypergraphEdge_4prob_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_trule(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_trule(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_14HypergraphEdge_5trule_1__get__(o);
 }
 
-static int __pyx_setprop_5_cdec_14HypergraphEdge_trule(PyObject *o, PyObject *v, void *x) {
+static int __pyx_setprop_5_cdec_14HypergraphEdge_trule(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
   if (v) {
     return __pyx_pw_5_cdec_14HypergraphEdge_5trule_3__set__(o, v);
   }
@@ -20612,7 +21012,7 @@ static PyTypeObject __pyx_type_5_cdec_HypergraphEdge = {
 };
 static struct __pyx_vtabstruct_5_cdec_HypergraphNode __pyx_vtable_5_cdec_HypergraphNode;
 
-static PyObject *__pyx_tp_new_5_cdec_HypergraphNode(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_HypergraphNode(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec_HypergraphNode *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -20625,19 +21025,19 @@ static void __pyx_tp_dealloc_5_cdec_HypergraphNode(PyObject *o) {
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_14HypergraphNode_in_edges(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_14HypergraphNode_in_edges(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_14HypergraphNode_8in_edges_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_14HypergraphNode_out_edges(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_14HypergraphNode_out_edges(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_14HypergraphNode_9out_edges_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_14HypergraphNode_span(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_14HypergraphNode_span(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_14HypergraphNode_4span_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_14HypergraphNode_cat(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_14HypergraphNode_cat(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_14HypergraphNode_3cat_1__get__(o);
 }
 
@@ -21006,7 +21406,7 @@ static PyTypeObject __pyx_type_5_cdec_Lattice = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec_Candidate(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_Candidate(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
   return o;
@@ -21016,19 +21416,19 @@ static void __pyx_tp_dealloc_5_cdec_Candidate(PyObject *o) {
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_9Candidate_words(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_9Candidate_words(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_9Candidate_5words_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_9Candidate_fmap(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_9Candidate_fmap(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_9Candidate_4fmap_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_9Candidate_score(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_9Candidate_score(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_9Candidate_5score_1__get__(o);
 }
 
-static int __pyx_setprop_5_cdec_9Candidate_score(PyObject *o, PyObject *v, void *x) {
+static int __pyx_setprop_5_cdec_9Candidate_score(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
   if (v) {
     return __pyx_pw_5_cdec_9Candidate_5score_3__set__(o, v);
   }
@@ -21203,7 +21603,7 @@ static PyTypeObject __pyx_type_5_cdec_Candidate = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec_SufficientStats(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_SufficientStats(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
   return o;
@@ -21229,11 +21629,11 @@ static PyObject *__pyx_sq_item_5_cdec_SufficientStats(PyObject *o, Py_ssize_t i)
   return r;
 }
 
-static PyObject *__pyx_getprop_5_cdec_15SufficientStats_score(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_15SufficientStats_score(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_15SufficientStats_5score_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_15SufficientStats_detail(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_15SufficientStats_detail(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_15SufficientStats_6detail_1__get__(o);
 }
 
@@ -21589,7 +21989,7 @@ static PyTypeObject __pyx_type_5_cdec_CandidateSet = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec_SegmentEvaluator(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_SegmentEvaluator(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
   return o;
@@ -21948,7 +22348,7 @@ static PyTypeObject __pyx_type_5_cdec_Scorer = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec_Metric(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_Metric(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec_Metric *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -22189,11 +22589,11 @@ static int __pyx_tp_clear_5_cdec_Decoder(PyObject *o) {
   return 0;
 }
 
-static PyObject *__pyx_getprop_5_cdec_7Decoder_weights(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_7Decoder_weights(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_7Decoder_7weights_1__get__(o);
 }
 
-static int __pyx_setprop_5_cdec_7Decoder_weights(PyObject *o, PyObject *v, void *x) {
+static int __pyx_setprop_5_cdec_7Decoder_weights(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
   if (v) {
     return __pyx_pw_5_cdec_7Decoder_7weights_3__set__(o, v);
   }
@@ -22203,7 +22603,7 @@ static int __pyx_setprop_5_cdec_7Decoder_weights(PyObject *o, PyObject *v, void
   }
 }
 
-static PyObject *__pyx_getprop_5_cdec_7Decoder_formalism(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_7Decoder_formalism(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_7Decoder_9formalism_1__get__(o);
 }
 
@@ -22373,7 +22773,7 @@ static PyTypeObject __pyx_type_5_cdec_Decoder = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct____iter__(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct____iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct____iter__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -22564,7 +22964,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct____iter__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_1___iter__(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_1___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_1___iter__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -22755,7 +23155,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_1___iter__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_2__phrase(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_2__phrase(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_2__phrase *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -22946,7 +23346,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_2__phrase = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_3_genexpr(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_3_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_3_genexpr *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -23153,7 +23553,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_3_genexpr = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_4___get__(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_4___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_4___get__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -23344,7 +23744,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_4___get__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_5___str__(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_5___str__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_5___str__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -23535,7 +23935,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_5___str__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_6_genexpr(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_6_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_6_genexpr *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -23742,7 +24142,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_6_genexpr = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_7___iter__(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_7___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_7___iter__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -23941,7 +24341,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_7___iter__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_8_kbest(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_8_kbest(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_8_kbest *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -24140,7 +24540,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_8_kbest = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_9_kbest_trees(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_9_kbest_trees(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_9_kbest_trees *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -24355,7 +24755,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_9_kbest_trees = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_10_kbest_features(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_10_kbest_features(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -24562,7 +24962,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_10_kbest_features = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_11_sample(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_11_sample(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -24753,7 +25153,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_11_sample = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_12_sample_trees(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_12_sample_trees(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_12_sample_trees *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -24944,7 +25344,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_12_sample_trees = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_13___get__(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_13___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_13___get__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -25135,7 +25535,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_13___get__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_14___get__(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_14___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_14___get__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -25326,7 +25726,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_14___get__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_15___get__(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_15___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_15___get__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -25517,7 +25917,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_15___get__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_16___get__(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_16___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_16___get__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -25708,7 +26108,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_16___get__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_17___get__(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_17___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_17___get__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -25899,7 +26299,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_17___get__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_18___iter__(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_18___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_18___iter__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -26090,7 +26490,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_18___iter__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_19_todot(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_19_todot(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_19_todot *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -26281,7 +26681,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_19_todot = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_20_lines(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_20_lines(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_20_lines *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -26520,7 +26920,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_20_lines = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_21___iter__(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_21___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_21___iter__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -26727,7 +27127,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_21___iter__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_22___iter__(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_22___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_22___iter__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -26918,7 +27318,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_22___iter__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_23__make_config(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_23__make_config(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_23__make_config *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -27157,7 +27557,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_23__make_config = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_24___cinit__(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_24___cinit__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_24___cinit__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -27348,7 +27748,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_24___cinit__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_25_genexpr(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_25_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_25_genexpr *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -27689,6 +28089,7 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s__scores, __pyx_k__scores, sizeof(__pyx_k__scores), 0, 0, 1, 1},
   {&__pyx_n_s__self, __pyx_k__self, sizeof(__pyx_k__self), 0, 0, 1, 1},
   {&__pyx_n_s__sentence, __pyx_k__sentence, sizeof(__pyx_k__sentence), 0, 0, 1, 1},
+  {&__pyx_n_s__set_silent, __pyx_k__set_silent, sizeof(__pyx_k__set_silent), 0, 0, 1, 1},
   {&__pyx_n_s__span, __pyx_k__span, sizeof(__pyx_k__span), 0, 0, 1, 1},
   {&__pyx_n_s__split, __pyx_k__split, sizeof(__pyx_k__split), 0, 0, 1, 1},
   {&__pyx_n_s__startswith, __pyx_k__startswith, sizeof(__pyx_k__startswith), 0, 0, 1, 1},
@@ -27698,6 +28099,7 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s__utf8, __pyx_k__utf8, sizeof(__pyx_k__utf8), 0, 0, 1, 1},
   {&__pyx_n_s__value, __pyx_k__value, sizeof(__pyx_k__value), 0, 0, 1, 1},
   {&__pyx_n_s__weight, __pyx_k__weight, sizeof(__pyx_k__weight), 0, 0, 1, 1},
+  {&__pyx_n_s__yn, __pyx_k__yn, sizeof(__pyx_k__yn), 0, 0, 1, 1},
   {0, 0, 0, 0, 0, 0, 0}
 };
 static int __Pyx_InitCachedBuiltins(void) {
@@ -27708,10 +28110,10 @@ static int __Pyx_InitCachedBuiltins(void) {
   __pyx_builtin_NotImplemented = __Pyx_GetName(__pyx_b, __pyx_n_s__NotImplemented); if (!__pyx_builtin_NotImplemented) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 89; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_builtin_super = __Pyx_GetName(__pyx_b, __pyx_n_s__super); if (!__pyx_builtin_super) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 179; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_builtin_ValueError = __Pyx_GetName(__pyx_b, __pyx_n_s__ValueError); if (!__pyx_builtin_ValueError) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 212; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_builtin_eval = __Pyx_GetName(__pyx_b, __pyx_n_s__eval); if (!__pyx_builtin_eval) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_builtin_eval = __Pyx_GetName(__pyx_b, __pyx_n_s__eval); if (!__pyx_builtin_eval) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_builtin_enumerate = __Pyx_GetName(__pyx_b, __pyx_n_s__enumerate); if (!__pyx_builtin_enumerate) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 9; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_builtin_IndexError = __Pyx_GetName(__pyx_b, __pyx_n_s__IndexError); if (!__pyx_builtin_IndexError) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 24; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_builtin_open = __Pyx_GetName(__pyx_b, __pyx_n_s__open); if (!__pyx_builtin_open) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 89; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_builtin_open = __Pyx_GetName(__pyx_b, __pyx_n_s__open); if (!__pyx_builtin_open) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   return 0;
   __pyx_L1_error:;
   return -1;
@@ -27735,7 +28137,7 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__utf8));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_2));
 
-  /* "/home/cdyer/cdec/python/src/vectors.pxi":89
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":89
  *         elif op == 3: # !=
  *             return not (x == y)
  *         raise NotImplemented('comparison not implemented for SparseVector')             # <<<<<<<<<<<<<<
@@ -27749,7 +28151,7 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_4));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_5));
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":6
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":6
  * 
  * def _phrase(phrase):
  *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)             # <<<<<<<<<<<<<<
@@ -27763,7 +28165,7 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__utf8));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_6));
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":212
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":212
  *                 trule = convert_rule(trule)
  *             elif not isinstance(trule, TRule):
  *                 raise ValueError('the grammar should contain TRule objects')             # <<<<<<<<<<<<<<
@@ -27776,33 +28178,33 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_13));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_14));
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":203
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":204
  *         elif op == 3: # !=
  *             return not (x == y)
  *         raise NotImplemented('comparison not implemented for HypergraphEdge')             # <<<<<<<<<<<<<<
  * 
  * cdef class HypergraphNode:
  */
-  __pyx_k_tuple_18 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_18)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 203; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_18 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_18)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 204; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_k_tuple_18);
   __Pyx_INCREF(((PyObject *)__pyx_kp_s_17));
   PyTuple_SET_ITEM(__pyx_k_tuple_18, 0, ((PyObject *)__pyx_kp_s_17));
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_17));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_18));
 
-  /* "/home/cdyer/cdec/python/src/hypergraph.pxi":240
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":241
  *         elif op == 3: # !=
  *             return not (x == y)
  *         raise NotImplemented('comparison not implemented for HypergraphNode')             # <<<<<<<<<<<<<<
  */
-  __pyx_k_tuple_20 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_20)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 240; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_20 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_20)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 241; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_INCREF(((PyObject *)__pyx_kp_s_19));
   PyTuple_SET_ITEM(__pyx_k_tuple_20, 0, ((PyObject *)__pyx_kp_s_19));
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_19));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_20));
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":13
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":13
  *         else:
  *             if isinstance(inp, unicode):
  *                 inp = inp.encode('utf8')             # <<<<<<<<<<<<<<
@@ -27816,7 +28218,7 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__utf8));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_21));
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":24
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":24
  *     def __getitem__(self, int index):
  *         if not 0 <= index < len(self):
  *             raise IndexError('lattice index out of range')             # <<<<<<<<<<<<<<
@@ -27830,7 +28232,7 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_23));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_24));
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":37
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":37
  *     def __setitem__(self, int index, tuple arcs):
  *         if not 0 <= index < len(self):
  *             raise IndexError('lattice index out of range')             # <<<<<<<<<<<<<<
@@ -27844,7 +28246,7 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_23));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_25));
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":41
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":41
  *         for (label, cost, dist2next) in arcs:
  *             if isinstance(label, unicode):
  *                 label = label.encode('utf8')             # <<<<<<<<<<<<<<
@@ -27858,7 +28260,7 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__utf8));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_26));
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":64
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":64
  *             for i in range(len(self)):
  *                 for label, weight, delta in self[i]:
  *                     yield '%d -> %d [label="%s"];' % (i, i+delta, label.replace('"', '\\"'))             # <<<<<<<<<<<<<<
@@ -27875,7 +28277,7 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_32));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_33));
 
-  /* "/home/cdyer/cdec/python/src/lattice.pxi":58
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":58
  * 
  *     def todot(self):
  *         def lines():             # <<<<<<<<<<<<<<
@@ -27899,7 +28301,7 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_36));
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-  /* "/home/cdyer/cdec/python/src/lattice.pxi":67
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":67
  *             yield '%d [shape=doublecircle]' % len(self)
  *             yield '}'
  *         return '\n'.join(lines()).encode('utf8')             # <<<<<<<<<<<<<<
@@ -27911,7 +28313,7 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__utf8));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_40));
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":50
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":50
  *     def __getitem__(self, int index):
  *         if not 0 <= index < len(self):
  *             raise IndexError('sufficient stats vector index out of range')             # <<<<<<<<<<<<<<
@@ -27925,7 +28327,7 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_41));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_42));
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":84
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":84
  *     def __getitem__(self,int k):
  *         if not 0 <= k < self.cs.size():
  *             raise IndexError('candidate set index out of range')             # <<<<<<<<<<<<<<
@@ -27939,14 +28341,14 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_43));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_44));
 
-  /* "_cdec.pyx":50
+  /* "_cdec.pyx":53
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  *             if formalism not in ('scfg', 'fst', 'lextrans', 'pb',
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  */
-  __pyx_k_tuple_47 = PyTuple_New(2); if (unlikely(!__pyx_k_tuple_47)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 50; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_47 = PyTuple_New(2); if (unlikely(!__pyx_k_tuple_47)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 53; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_k_tuple_47);
   __Pyx_INCREF(((PyObject *)__pyx_n_s__formalism));
   PyTuple_SET_ITEM(__pyx_k_tuple_47, 0, ((PyObject *)__pyx_n_s__formalism));
@@ -27956,28 +28358,28 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(Py_None);
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_47));
 
-  /* "_cdec.pyx":91
+  /* "_cdec.pyx":93
  *         with open(weights) as fp:
  *             for line in fp:
  *                 if line.strip().startswith('#'): continue             # <<<<<<<<<<<<<<
  *                 fname, value = line.split()
  *                 self.weights[fname.strip()] = float(value)
  */
-  __pyx_k_tuple_51 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_51)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_51 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_51)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 93; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   PyTuple_SET_ITEM(__pyx_k_tuple_51, 0, ((PyObject *)__pyx_kp_s_50));
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_50));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_51));
 
-  /* "_cdec.pyx":89
+  /* "_cdec.pyx":91
  * 
  *     def read_weights(self, weights):
  *         with open(weights) as fp:             # <<<<<<<<<<<<<<
  *             for line in fp:
  *                 if line.strip().startswith('#'): continue
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-  __pyx_k_tuple_52 = PyTuple_New(3); if (unlikely(!__pyx_k_tuple_52)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 89; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_52 = PyTuple_New(3); if (unlikely(!__pyx_k_tuple_52)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_INCREF(Py_None);
   PyTuple_SET_ITEM(__pyx_k_tuple_52, 0, Py_None);
@@ -27990,7 +28392,7 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(Py_None);
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_52));
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":5
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":5
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  * 
  * def _phrase(phrase):             # <<<<<<<<<<<<<<
@@ -28011,7 +28413,7 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_56));
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-  /* "/home/cdyer/cdec/python/src/mteval.pxi":190
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":190
  *         return []
  * 
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@@ -28025,7 +28427,7 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__IBM_BLEU));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_59));
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":191
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":191
  * 
  * BLEU = Scorer('IBM_BLEU')
  * TER = Scorer('TER')             # <<<<<<<<<<<<<<
@@ -28038,7 +28440,7 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__TER));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_60));
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":192
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":192
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  * TER = Scorer('TER')
  * CER = Scorer('CER')             # <<<<<<<<<<<<<<
@@ -28053,29 +28455,44 @@ static int __Pyx_InitCachedConstants(void) {
   /* "_cdec.pyx":28
  * class ParseFailed(Exception): pass
  * 
+ * def set_silent(yn):             # <<<<<<<<<<<<<<
+ *     SetSilent(yn)
+ * 
+ */
+  __pyx_k_tuple_62 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_62)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_62);
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__yn));
+  PyTuple_SET_ITEM(__pyx_k_tuple_62, 0, ((PyObject *)__pyx_n_s__yn));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__yn));
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_62));
+  __pyx_k_codeobj_63 = (PyObject*)__Pyx_PyCode_New(1, 0, 1, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_62, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_64, __pyx_n_s__set_silent, 28, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_63)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+
+  /* "_cdec.pyx":31
+ *     SetSilent(yn)
+ * 
  * def _make_config(config):             # <<<<<<<<<<<<<<
  *     for key, value in config.items():
  *         if isinstance(value, dict):
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-  __pyx_k_tuple_62 = PyTuple_New(5); if (unlikely(!__pyx_k_tuple_62)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_k_tuple_62);
+  __pyx_k_tuple_65 = PyTuple_New(5); if (unlikely(!__pyx_k_tuple_65)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_65);
   __Pyx_INCREF(((PyObject *)__pyx_n_s__config));
-  PyTuple_SET_ITEM(__pyx_k_tuple_62, 0, ((PyObject *)__pyx_n_s__config));
+  PyTuple_SET_ITEM(__pyx_k_tuple_65, 0, ((PyObject *)__pyx_n_s__config));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__config));
   __Pyx_INCREF(((PyObject *)__pyx_n_s__key));
-  PyTuple_SET_ITEM(__pyx_k_tuple_62, 1, ((PyObject *)__pyx_n_s__key));
+  PyTuple_SET_ITEM(__pyx_k_tuple_65, 1, ((PyObject *)__pyx_n_s__key));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__key));
   __Pyx_INCREF(((PyObject *)__pyx_n_s__value));
-  PyTuple_SET_ITEM(__pyx_k_tuple_62, 2, ((PyObject *)__pyx_n_s__value));
+  PyTuple_SET_ITEM(__pyx_k_tuple_65, 2, ((PyObject *)__pyx_n_s__value));
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   __Pyx_INCREF(((PyObject *)__pyx_n_s__name));
-  PyTuple_SET_ITEM(__pyx_k_tuple_62, 3, ((PyObject *)__pyx_n_s__name));
+  PyTuple_SET_ITEM(__pyx_k_tuple_65, 3, ((PyObject *)__pyx_n_s__name));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__name));
   __Pyx_INCREF(((PyObject *)__pyx_n_s__info));
-  PyTuple_SET_ITEM(__pyx_k_tuple_62, 4, ((PyObject *)__pyx_n_s__info));
+  PyTuple_SET_ITEM(__pyx_k_tuple_65, 4, ((PyObject *)__pyx_n_s__info));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__info));
-  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_62));
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+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_65));
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@@ -28147,6 +28564,9 @@ PyMODINIT_FUNC PyInit__cdec(void)
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   if (!__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);
+  #endif
   if (__Pyx_SetAttrString(__pyx_m, "__builtins__", __pyx_b) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
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   if (unlikely(__Pyx_InitGlobals() < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
@@ -28187,20 +28607,23 @@ PyMODINIT_FUNC PyInit__cdec(void)
   if (PyType_Ready(&__pyx_type_5_cdec_TextGrammar) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 204; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__Pyx_SetAttrString(__pyx_m, "TextGrammar", (PyObject *)&__pyx_type_5_cdec_TextGrammar) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 204; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec_TextGrammar = &__pyx_type_5_cdec_TextGrammar;
+  __pyx_vtabptr_5_cdec_Hypergraph = &__pyx_vtable_5_cdec_Hypergraph;
+  __pyx_vtable_5_cdec_Hypergraph._rng = (MT19937 *(*)(struct __pyx_obj_5_cdec_Hypergraph *))__pyx_f_5_cdec_10Hypergraph__rng;
   if (PyType_Ready(&__pyx_type_5_cdec_Hypergraph) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetVtable(__pyx_type_5_cdec_Hypergraph.tp_dict, __pyx_vtabptr_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_5_cdec_Hypergraph) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec_Hypergraph = &__pyx_type_5_cdec_Hypergraph;
   __pyx_vtabptr_5_cdec_HypergraphEdge = &__pyx_vtable_5_cdec_HypergraphEdge;
   __pyx_vtable_5_cdec_HypergraphEdge.init = (PyObject *(*)(struct __pyx_obj_5_cdec_HypergraphEdge *, Hypergraph *, unsigned int))__pyx_f_5_cdec_14HypergraphEdge_init;
-  if (PyType_Ready(&__pyx_type_5_cdec_HypergraphEdge) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 159; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetVtable(__pyx_type_5_cdec_HypergraphEdge.tp_dict, __pyx_vtabptr_5_cdec_HypergraphEdge) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 159; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "HypergraphEdge", (PyObject *)&__pyx_type_5_cdec_HypergraphEdge) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 159; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec_HypergraphEdge) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 160; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetVtable(__pyx_type_5_cdec_HypergraphEdge.tp_dict, __pyx_vtabptr_5_cdec_HypergraphEdge) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 160; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "HypergraphEdge", (PyObject *)&__pyx_type_5_cdec_HypergraphEdge) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 160; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec_HypergraphEdge = &__pyx_type_5_cdec_HypergraphEdge;
   __pyx_vtabptr_5_cdec_HypergraphNode = &__pyx_vtable_5_cdec_HypergraphNode;
   __pyx_vtable_5_cdec_HypergraphNode.init = (PyObject *(*)(struct __pyx_obj_5_cdec_HypergraphNode *, Hypergraph *, unsigned int))__pyx_f_5_cdec_14HypergraphNode_init;
-  if (PyType_Ready(&__pyx_type_5_cdec_HypergraphNode) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 205; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetVtable(__pyx_type_5_cdec_HypergraphNode.tp_dict, __pyx_vtabptr_5_cdec_HypergraphNode) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 205; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "HypergraphNode", (PyObject *)&__pyx_type_5_cdec_HypergraphNode) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 205; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec_HypergraphNode) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 206; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetVtable(__pyx_type_5_cdec_HypergraphNode.tp_dict, __pyx_vtabptr_5_cdec_HypergraphNode) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 206; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "HypergraphNode", (PyObject *)&__pyx_type_5_cdec_HypergraphNode) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 206; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec_HypergraphNode = &__pyx_type_5_cdec_HypergraphNode;
   if (PyType_Ready(&__pyx_type_5_cdec_Lattice) < 0) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__Pyx_SetAttrString(__pyx_m, "Lattice", (PyObject *)&__pyx_type_5_cdec_Lattice) < 0) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
@@ -28223,8 +28646,8 @@ PyMODINIT_FUNC PyInit__cdec(void)
   if (PyType_Ready(&__pyx_type_5_cdec_Metric) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 173; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__Pyx_SetAttrString(__pyx_m, "Metric", (PyObject *)&__pyx_type_5_cdec_Metric) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 173; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec_Metric = &__pyx_type_5_cdec_Metric;
-  if (PyType_Ready(&__pyx_type_5_cdec_Decoder) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "Decoder", (PyObject *)&__pyx_type_5_cdec_Decoder) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec_Decoder) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 42; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "Decoder", (PyObject *)&__pyx_type_5_cdec_Decoder) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 42; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec_Decoder = &__pyx_type_5_cdec_Decoder;
   if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct____iter__) < 0) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct____iter__ = &__pyx_type_5_cdec___pyx_scope_struct____iter__;
@@ -28242,25 +28665,25 @@ PyMODINIT_FUNC PyInit__cdec(void)
   __pyx_ptype_5_cdec___pyx_scope_struct_6_genexpr = &__pyx_type_5_cdec___pyx_scope_struct_6_genexpr;
   if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_7___iter__) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 187; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_7___iter__ = &__pyx_type_5_cdec___pyx_scope_struct_7___iter__;
-  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_8_kbest) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_8_kbest) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 36; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_8_kbest = &__pyx_type_5_cdec___pyx_scope_struct_8_kbest;
-  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_9_kbest_trees) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_9_kbest_trees) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 48; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_9_kbest_trees = &__pyx_type_5_cdec___pyx_scope_struct_9_kbest_trees;
-  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_10_kbest_features) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_10_kbest_features) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 66; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_10_kbest_features = &__pyx_type_5_cdec___pyx_scope_struct_10_kbest_features;
-  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_11_sample) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 76; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_11_sample) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 81; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_11_sample = &__pyx_type_5_cdec___pyx_scope_struct_11_sample;
-  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_12_sample_trees) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 88; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_12_sample_trees) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 91; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_12_sample_trees = &__pyx_type_5_cdec___pyx_scope_struct_12_sample_trees;
-  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_13___get__) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_13___get__) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 126; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_13___get__ = &__pyx_type_5_cdec___pyx_scope_struct_13___get__;
-  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_14___get__) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 131; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_14___get__) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_14___get__ = &__pyx_type_5_cdec___pyx_scope_struct_14___get__;
-  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_15___get__) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 179; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_15___get__) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 180; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_15___get__ = &__pyx_type_5_cdec___pyx_scope_struct_15___get__;
-  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_16___get__) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 215; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_16___get__) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 216; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_16___get__ = &__pyx_type_5_cdec___pyx_scope_struct_16___get__;
-  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_17___get__) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 221; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_17___get__) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 222; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_17___get__ = &__pyx_type_5_cdec___pyx_scope_struct_17___get__;
   if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_18___iter__) < 0) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 52; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_18___iter__ = &__pyx_type_5_cdec___pyx_scope_struct_18___iter__;
@@ -28272,11 +28695,11 @@ PyMODINIT_FUNC PyInit__cdec(void)
   __pyx_ptype_5_cdec___pyx_scope_struct_21___iter__ = &__pyx_type_5_cdec___pyx_scope_struct_21___iter__;
   if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_22___iter__) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 90; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_22___iter__ = &__pyx_type_5_cdec___pyx_scope_struct_22___iter__;
-  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_23__make_config) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_23__make_config) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_23__make_config = &__pyx_type_5_cdec___pyx_scope_struct_23__make_config;
-  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_24___cinit__) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_24___cinit__) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 46; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_24___cinit__ = &__pyx_type_5_cdec___pyx_scope_struct_24___cinit__;
-  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_25_genexpr) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 54; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_25_genexpr) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 57; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_25_genexpr = &__pyx_type_5_cdec___pyx_scope_struct_25_genexpr;
   /*--- Type import code ---*/
   __pyx_ptype_4cdec_2sa_3_sa_Phrase = __Pyx_ImportType("cdec.sa._sa", "Phrase", sizeof(struct __pyx_obj_4cdec_2sa_3_sa_Phrase), 1); if (unlikely(!__pyx_ptype_4cdec_2sa_3_sa_Phrase)) {__pyx_filename = __pyx_f[6]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
@@ -28292,7 +28715,7 @@ PyMODINIT_FUNC PyInit__cdec(void)
   Py_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   /*--- Execution code ---*/
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":3
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":3
  * cimport grammar
  * cimport cdec.sa._sa as _sa
  * import cdec.sa._sa as _sa             # <<<<<<<<<<<<<<
@@ -28310,7 +28733,7 @@ PyMODINIT_FUNC PyInit__cdec(void)
   if (PyObject_SetAttr(__pyx_m, __pyx_n_s___sa, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-  /* "/home/cdyer/cdec/python/src/grammar.pxi":5
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":5
  * import cdec.sa._sa as _sa
  * 
  * def _phrase(phrase):             # <<<<<<<<<<<<<<
@@ -28322,7 +28745,7 @@ PyMODINIT_FUNC PyInit__cdec(void)
   if (PyObject_SetAttr(__pyx_m, __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;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":190
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":190
  *         return []
  * 
  * BLEU = Scorer('IBM_BLEU')             # <<<<<<<<<<<<<<
@@ -28334,7 +28757,7 @@ PyMODINIT_FUNC PyInit__cdec(void)
   if (PyObject_SetAttr(__pyx_m, __pyx_n_s__BLEU, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 190; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":191
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":191
  * 
  * BLEU = Scorer('IBM_BLEU')
  * TER = Scorer('TER')             # <<<<<<<<<<<<<<
@@ -28345,7 +28768,7 @@ PyMODINIT_FUNC PyInit__cdec(void)
   if (PyObject_SetAttr(__pyx_m, __pyx_n_s__TER, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 191; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-  /* "/home/cdyer/cdec/python/src/mteval.pxi":192
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":192
  * BLEU = Scorer('IBM_BLEU')
  * TER = Scorer('TER')
  * CER = Scorer('CER')             # <<<<<<<<<<<<<<
@@ -28399,7 +28822,7 @@ PyMODINIT_FUNC PyInit__cdec(void)
  * class InvalidConfig(Exception): pass
  * class ParseFailed(Exception): pass             # <<<<<<<<<<<<<<
  * 
- * def _make_config(config):
+ * def set_silent(yn):
  */
   __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));
@@ -28418,13 +28841,25 @@ PyMODINIT_FUNC PyInit__cdec(void)
   /* "_cdec.pyx":28
  * class ParseFailed(Exception): pass
  * 
+ * def set_silent(yn):             # <<<<<<<<<<<<<<
+ *     SetSilent(yn)
+ * 
+ */
+  __pyx_t_3 = PyCFunction_NewEx(&__pyx_mdef_5_cdec_3set_silent, NULL, __pyx_n_s___cdec); 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 (PyObject_SetAttr(__pyx_m, __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.pyx":31
+ *     SetSilent(yn)
+ * 
  * def _make_config(config):             # <<<<<<<<<<<<<<
  *     for key, value in config.items():
  *         if isinstance(value, dict):
  */
-  __pyx_t_3 = PyCFunction_NewEx(&__pyx_mdef_5_cdec_3_make_config, NULL, __pyx_n_s___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_5_cdec_5_make_config, NULL, __pyx_n_s___cdec); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s___make_config, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s___make_config, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
   /* "_cdec.pyx":1
@@ -28662,7 +29097,7 @@ static void __Pyx_RaiseArgtupleInvalid(
         more_or_less = "exactly";
     }
     PyErr_Format(PyExc_TypeError,
-                 "%s() takes %s %"PY_FORMAT_SIZE_T"d positional argument%s (%"PY_FORMAT_SIZE_T"d given)",
+                 "%s() takes %s %" PY_FORMAT_SIZE_T "d positional argument%s (%" PY_FORMAT_SIZE_T "d given)",
                  func_name, more_or_less, num_expected,
                  (num_expected == 1) ? "" : "s", num_found);
 }
@@ -28674,6 +29109,11 @@ static CYTHON_INLINE int __Pyx_CheckKeywordStrings(
 {
     PyObject* key = 0;
     Py_ssize_t pos = 0;
+#if CPYTHON_COMPILING_IN_PYPY
+    if (!kw_allowed && PyDict_Next(kwdict, &pos, &key, 0))
+        goto invalid_keyword;
+    return 1;
+#else
     while (PyDict_Next(kwdict, &pos, &key, 0)) {
         #if PY_MAJOR_VERSION < 3
         if (unlikely(!PyString_CheckExact(key)) && unlikely(!PyString_Check(key)))
@@ -28689,6 +29129,7 @@ invalid_keyword_type:
     PyErr_Format(PyExc_TypeError,
         "%s() keywords must be strings", function_name);
     return 0;
+#endif
 invalid_keyword:
     PyErr_Format(PyExc_TypeError,
     #if PY_MAJOR_VERSION < 3
@@ -28827,17 +29268,49 @@ bad:
     return -1;
 }
 
-
+static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected) {
+    PyErr_Format(PyExc_ValueError,
+                 "too many values to unpack (expected %" PY_FORMAT_SIZE_T "d)", expected);
+}
 
 static CYTHON_INLINE void __Pyx_RaiseNeedMoreValuesError(Py_ssize_t index) {
     PyErr_Format(PyExc_ValueError,
-                 "need more than %"PY_FORMAT_SIZE_T"d value%s to unpack",
+                 "need more than %" PY_FORMAT_SIZE_T "d value%s to unpack",
                  index, (index == 1) ? "" : "s");
 }
 
-static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected) {
-    PyErr_Format(PyExc_ValueError,
-                 "too many values to unpack (expected %"PY_FORMAT_SIZE_T"d)", expected);
+static CYTHON_INLINE int __Pyx_IterFinish(void) {
+#if CYTHON_COMPILING_IN_CPYTHON
+    PyThreadState *tstate = PyThreadState_GET();
+    PyObject* exc_type = tstate->curexc_type;
+    if (unlikely(exc_type)) {
+        if (likely(exc_type == PyExc_StopIteration) || PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration)) {
+            PyObject *exc_value, *exc_tb;
+            exc_value = tstate->curexc_value;
+            exc_tb = tstate->curexc_traceback;
+            tstate->curexc_type = 0;
+            tstate->curexc_value = 0;
+            tstate->curexc_traceback = 0;
+            Py_DECREF(exc_type);
+            Py_XDECREF(exc_value);
+            Py_XDECREF(exc_tb);
+            return 0;
+        } else {
+            return -1;
+        }
+    }
+    return 0;
+#else
+    if (unlikely(PyErr_Occurred())) {
+        if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) {
+            PyErr_Clear();
+            return 0;
+        } else {
+            return -1;
+        }
+    }
+    return 0;
+#endif
 }
 
 static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected) {
@@ -28845,45 +29318,54 @@ static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected) {
         Py_DECREF(retval);
         __Pyx_RaiseTooManyValuesError(expected);
         return -1;
-    } else if (PyErr_Occurred()) {
-        if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) {
-            PyErr_Clear();
-            return 0;
-        } else {
-            return -1;
-        }
+    } else {
+        return __Pyx_IterFinish();
     }
     return 0;
 }
 
 static CYTHON_INLINE PyObject *__Pyx_PyIter_Next2(PyObject* iterator, PyObject* defval) {
     PyObject* next;
-    if (unlikely(!PyIter_Check(iterator))) {
+    iternextfunc iternext = Py_TYPE(iterator)->tp_iternext;
+#if CYTHON_COMPILING_IN_CPYTHON
+    if (unlikely(!iternext)) {
+#else
+    if (unlikely(!iternext) || unlikely(!PyIter_Check(iterator))) {
+#endif
         PyErr_Format(PyExc_TypeError,
-            "%.200s object is not an iterator", iterator->ob_type->tp_name);
+            "%.200s object is not an iterator", Py_TYPE(iterator)->tp_name);
         return NULL;
     }
-    next = (*(Py_TYPE(iterator)->tp_iternext))(iterator);
-    if (likely(next)) {
+    next = iternext(iterator);
+    if (likely(next))
         return next;
-    } else if (defval) {
-        if (PyErr_Occurred()) {
-            if(!PyErr_ExceptionMatches(PyExc_StopIteration))
+#if CYTHON_COMPILING_IN_CPYTHON
+#if PY_VERSION_HEX >= 0x03010000 || (PY_MAJOR_VERSION < 3 && PY_VERSION_HEX >= 0x02070000)
+    if (unlikely(iternext == &_PyObject_NextNotImplemented))
+        return NULL;
+#endif
+#endif
+    if (defval) {
+        PyObject* exc_type = PyErr_Occurred();
+        if (exc_type) {
+            if (unlikely(exc_type != PyExc_StopIteration) &&
+                    !PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration))
                 return NULL;
             PyErr_Clear();
         }
         Py_INCREF(defval);
         return defval;
-    } else if (PyErr_Occurred()) {
-        return NULL;
-    } else {
-        PyErr_SetNone(PyExc_StopIteration);
-        return NULL;
     }
+    if (!PyErr_Occurred())
+        PyErr_SetNone(PyExc_StopIteration);
+    return NULL;
 }
 
 static double __Pyx__PyObject_AsDouble(PyObject* obj) {
     PyObject* float_value;
+#if CYTHON_COMPILING_IN_PYPY
+    float_value = PyNumber_Float(obj);
+#else
     if (Py_TYPE(obj)->tp_as_number && Py_TYPE(obj)->tp_as_number->nb_float) {
         return PyFloat_AsDouble(obj);
     } else if (PyUnicode_CheckExact(obj) || PyBytes_CheckExact(obj)) {
@@ -28900,6 +29382,7 @@ static double __Pyx__PyObject_AsDouble(PyObject* obj) {
         PyTuple_SET_ITEM(args, 0, 0);
         Py_DECREF(args);
     }
+#endif
     if (likely(float_value)) {
         double value = PyFloat_AS_DOUBLE(float_value);
         Py_DECREF(float_value);
@@ -28911,6 +29394,7 @@ bad:
 
 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;
@@ -28919,19 +29403,27 @@ static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb)
     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
-    *type = local_type;
-    *value = local_value;
-    *tb = local_tb;
     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;
@@ -28939,10 +29431,13 @@ static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb)
     tstate->exc_value = local_value;
     tstate->exc_traceback = local_tb;
     /* Make sure tstate is in a consistent state when we XDECREF
-       these objects (XDECREF may run arbitrary code). */
+       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;
@@ -28955,6 +29450,7 @@ bad:
 }
 
 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;
@@ -28962,8 +29458,12 @@ static CYTHON_INLINE void __Pyx_ExceptionSave(PyObject **type, PyObject **value,
     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;
@@ -28975,6 +29475,9 @@ static void __Pyx_ExceptionReset(PyObject *type, PyObject *value, PyObject *tb)
     Py_XDECREF(tmp_type);
     Py_XDECREF(tmp_value);
     Py_XDECREF(tmp_tb);
+#else
+    PyErr_SetExcInfo(type, value, tb);
+#endif
 }
 
 static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, long level) {
@@ -29048,7 +29551,6 @@ bad:
 
 static PyObject *__Pyx_FindPy2Metaclass(PyObject *bases) {
     PyObject *metaclass;
-    /* Default metaclass */
 #if PY_MAJOR_VERSION < 3
     if (PyTuple_Check(bases) && PyTuple_GET_SIZE(bases) > 0) {
         PyObject *base = PyTuple_GET_ITEM(bases, 0);
@@ -29078,7 +29580,6 @@ static PyObject *__Pyx_CreateClass(PyObject *bases, PyObject *dict, PyObject *na
     PyObject *metaclass;
     if (PyDict_SetItemString(dict, "__module__", modname) < 0)
         return NULL;
-    /* Python2 __metaclass__ */
     metaclass = PyDict_GetItemString(dict, "__metaclass__");
     if (metaclass) {
         Py_INCREF(metaclass);
@@ -29460,6 +29961,56 @@ __Pyx_CyFunction_repr(__pyx_CyFunctionObject *op)
                                PyString_AsString(func_name), (void *)op);
 #endif
 }
+#if CYTHON_COMPILING_IN_PYPY
+static PyObject * __Pyx_CyFunction_Call(PyObject *func, PyObject *arg, PyObject *kw) {
+    PyCFunctionObject* f = (PyCFunctionObject*)func;
+    PyCFunction meth = PyCFunction_GET_FUNCTION(func);
+    PyObject *self = PyCFunction_GET_SELF(func);
+    Py_ssize_t size;
+    switch (PyCFunction_GET_FLAGS(func) & ~(METH_CLASS | METH_STATIC | METH_COEXIST)) {
+    case METH_VARARGS:
+        if (likely(kw == NULL) || PyDict_Size(kw) == 0)
+            return (*meth)(self, arg);
+        break;
+    case METH_VARARGS | METH_KEYWORDS:
+        return (*(PyCFunctionWithKeywords)meth)(self, arg, kw);
+    case METH_NOARGS:
+        if (likely(kw == NULL) || PyDict_Size(kw) == 0) {
+            size = PyTuple_GET_SIZE(arg);
+            if (size == 0)
+                return (*meth)(self, NULL);
+            PyErr_Format(PyExc_TypeError,
+                "%.200s() takes no arguments (%zd given)",
+                f->m_ml->ml_name, size);
+            return NULL;
+        }
+        break;
+    case METH_O:
+        if (likely(kw == NULL) || PyDict_Size(kw) == 0) {
+            size = PyTuple_GET_SIZE(arg);
+            if (size == 1)
+                return (*meth)(self, PyTuple_GET_ITEM(arg, 0));
+            PyErr_Format(PyExc_TypeError,
+                "%.200s() takes exactly one argument (%zd given)",
+                f->m_ml->ml_name, size);
+            return NULL;
+        }
+        break;
+    default:
+        PyErr_SetString(PyExc_SystemError, "Bad call flags in "
+                        "__Pyx_CyFunction_Call. METH_OLDARGS is no "
+                        "longer supported!");
+        return NULL;
+    }
+    PyErr_Format(PyExc_TypeError, "%.200s() takes no keyword arguments",
+                 f->m_ml->ml_name);
+    return NULL;
+}
+#else
+static PyObject * __Pyx_CyFunction_Call(PyObject *func, PyObject *arg, PyObject *kw) {
+	return PyCFunction_Call(func, arg, kw);
+}
+#endif
 static PyTypeObject __pyx_CyFunctionType_type = {
     PyVarObject_HEAD_INIT(0, 0)
     __Pyx_NAMESTR("cython_function_or_method"), /*tp_name*/
@@ -29479,7 +30030,7 @@ static PyTypeObject __pyx_CyFunctionType_type = {
     0,                                  /*tp_as_sequence*/
     0,                                  /*tp_as_mapping*/
     0,                                  /*tp_hash*/
-    __Pyx_PyCFunction_Call,             /*tp_call*/
+    __Pyx_CyFunction_Call,              /*tp_call*/
     0,                                  /*tp_str*/
     0,                                  /*tp_getattro*/
     0,                                  /*tp_setattro*/
@@ -29515,15 +30066,16 @@ static PyTypeObject __pyx_CyFunctionType_type = {
     0,                                  /*tp_version_tag*/
 #endif
 };
-static int __Pyx_CyFunction_init(void)
-{
+static int __Pyx_CyFunction_init(void) {
+#if !CYTHON_COMPILING_IN_PYPY
+    __pyx_CyFunctionType_type.tp_call = PyCFunction_Call;
+#endif
     if (PyType_Ready(&__pyx_CyFunctionType_type) < 0)
         return -1;
     __pyx_CyFunctionType = &__pyx_CyFunctionType_type;
     return 0;
 }
-void *__Pyx_CyFunction_InitDefaults(PyObject *func, size_t size, int pyobjects)
-{
+static CYTHON_INLINE void *__Pyx_CyFunction_InitDefaults(PyObject *func, size_t size, int pyobjects) {
     __pyx_CyFunctionObject *m = (__pyx_CyFunctionObject *) func;
     m->defaults = PyMem_Malloc(size);
     if (!m->defaults)
@@ -29532,14 +30084,16 @@ void *__Pyx_CyFunction_InitDefaults(PyObject *func, size_t size, int pyobjects)
     m->defaults_pyobjects = pyobjects;
     return m->defaults;
 }
-static void __Pyx_CyFunction_SetDefaultsTuple(PyObject *func, PyObject *tuple)
-{
+static CYTHON_INLINE void __Pyx_CyFunction_SetDefaultsTuple(PyObject *func, PyObject *tuple) {
     __pyx_CyFunctionObject *m = (__pyx_CyFunctionObject *) func;
     m->defaults_tuple = tuple;
     Py_INCREF(tuple);
 }
 
 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)) {
@@ -29567,9 +30121,13 @@ static CYTHON_INLINE int __Pyx_PyBytes_Equals(PyObject* s1, PyObject* s2, int eq
         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 (s1 == s2) {
         return (equals == Py_EQ);
     } else if (PyUnicode_CheckExact(s1) & PyUnicode_CheckExact(s2)) {
@@ -29609,6 +30167,7 @@ static CYTHON_INLINE int __Pyx_PyUnicode_Equals(PyObject* s1, PyObject* s2, int
         Py_DECREF(py_result);
         return result;
     }
+#endif
 }
 
 static CYTHON_INLINE unsigned char __Pyx_PyInt_AsUnsignedChar(PyObject* x) {
@@ -30011,8 +30570,8 @@ static CYTHON_INLINE signed PY_LONG_LONG __Pyx_PyInt_AsSignedLongLong(PyObject*
     }
 }
 
-static void __Pyx_WriteUnraisable(const char *name, int clineno,
-                                  int lineno, const char *filename) {
+static void __Pyx_WriteUnraisable(const char *name, CYTHON_UNUSED int clineno,
+                                  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);
@@ -30032,6 +30591,7 @@ static void __Pyx_WriteUnraisable(const char *name, int clineno,
 
 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;
@@ -30039,6 +30599,10 @@ static CYTHON_INLINE void __Pyx_ExceptionSwap(PyObject **type, PyObject **value,
     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;
@@ -30048,9 +30612,70 @@ static PyObject *__Pyx_Generator_Next(PyObject *self);
 static PyObject *__Pyx_Generator_Send(PyObject *self, PyObject *value);
 static PyObject *__Pyx_Generator_Close(PyObject *self);
 static PyObject *__Pyx_Generator_Throw(PyObject *gen, PyObject *args);
+static PyTypeObject *__pyx_GeneratorType = 0;
+#define __Pyx_Generator_CheckExact(obj) (Py_TYPE(obj) == __pyx_GeneratorType)
+#define __Pyx_Generator_Undelegate(gen) Py_CLEAR((gen)->yieldfrom)
+#if 1 || PY_VERSION_HEX < 0x030300B0
+static int __Pyx_PyGen_FetchStopIterationValue(PyObject **pvalue) {
+    PyObject *et, *ev, *tb;
+    PyObject *value = NULL;
+    __Pyx_ErrFetch(&et, &ev, &tb);
+    if (!et) {
+        Py_XDECREF(tb);
+        Py_XDECREF(ev);
+        Py_INCREF(Py_None);
+        *pvalue = Py_None;
+        return 0;
+    }
+    if (unlikely(et != PyExc_StopIteration) &&
+            unlikely(!PyErr_GivenExceptionMatches(et, PyExc_StopIteration))) {
+        __Pyx_ErrRestore(et, ev, tb);
+        return -1;
+    }
+    if (likely(et == PyExc_StopIteration)) {
+        if (likely(!ev) || !PyObject_IsInstance(ev, PyExc_StopIteration)) {
+            if (!ev) {
+                Py_INCREF(Py_None);
+                ev = Py_None;
+            }
+            Py_XDECREF(tb);
+            Py_DECREF(et);
+            *pvalue = ev;
+            return 0;
+        }
+    }
+    PyErr_NormalizeException(&et, &ev, &tb);
+    if (unlikely(!PyObject_IsInstance(ev, PyExc_StopIteration))) {
+        __Pyx_ErrRestore(et, ev, tb);
+        return -1;
+    }
+    Py_XDECREF(tb);
+    Py_DECREF(et);
+#if PY_VERSION_HEX >= 0x030300A0
+    value = ((PyStopIterationObject *)ev)->value;
+    Py_INCREF(value);
+    Py_DECREF(ev);
+#else
+    {
+        PyObject* args = PyObject_GetAttrString(ev, "args");
+        Py_DECREF(ev);
+        if (likely(args)) {
+            value = PyObject_GetItem(args, 0);
+            Py_DECREF(args);
+        }
+        if (unlikely(!value)) {
+            __Pyx_ErrRestore(NULL, NULL, NULL);
+            Py_INCREF(Py_None);
+            value = Py_None;
+        }
+    }
+#endif
+    *pvalue = value;
+    return 0;
+}
+#endif
 static CYTHON_INLINE
-void __Pyx_Generator_ExceptionClear(__pyx_GeneratorObject *self)
-{
+void __Pyx_Generator_ExceptionClear(__pyx_GeneratorObject *self) {
     PyObject *exc_type = self->exc_type;
     PyObject *exc_value = self->exc_value;
     PyObject *exc_traceback = self->exc_traceback;
@@ -30062,14 +30687,18 @@ void __Pyx_Generator_ExceptionClear(__pyx_GeneratorObject *self)
     Py_XDECREF(exc_traceback);
 }
 static CYTHON_INLINE
-PyObject *__Pyx_Generator_SendEx(__pyx_GeneratorObject *self, PyObject *value)
-{
-    PyObject *retval;
-    if (unlikely(self->is_running)) {
+int __Pyx_Generator_CheckRunning(__pyx_GeneratorObject *gen) {
+    if (unlikely(gen->is_running)) {
         PyErr_SetString(PyExc_ValueError,
                         "generator already executing");
-        return NULL;
+        return 1;
     }
+    return 0;
+}
+static CYTHON_INLINE
+PyObject *__Pyx_Generator_SendEx(__pyx_GeneratorObject *self, PyObject *value) {
+    PyObject *retval;
+    assert(!self->is_running);
     if (unlikely(self->resume_label == 0)) {
         if (unlikely(value && value != Py_None)) {
             PyErr_SetString(PyExc_TypeError,
@@ -30082,81 +30711,240 @@ PyObject *__Pyx_Generator_SendEx(__pyx_GeneratorObject *self, PyObject *value)
         PyErr_SetNone(PyExc_StopIteration);
         return NULL;
     }
-    if (value)
-        __Pyx_ExceptionSwap(&self->exc_type, &self->exc_value, &self->exc_traceback);
-    else
+    if (value) {
+#if CYTHON_COMPILING_IN_PYPY
+#else
+        /* Generators always return to their most recent caller, not
+         * necessarily their creator. */
+        if (self->exc_traceback) {
+            PyThreadState *tstate = PyThreadState_GET();
+            PyTracebackObject *tb = (PyTracebackObject *) self->exc_traceback;
+            PyFrameObject *f = tb->tb_frame;
+            Py_XINCREF(tstate->frame);
+            assert(f->f_back == NULL);
+            f->f_back = tstate->frame;
+        }
+#endif
+        __Pyx_ExceptionSwap(&self->exc_type, &self->exc_value,
+                            &self->exc_traceback);
+    } else {
         __Pyx_Generator_ExceptionClear(self);
+    }
     self->is_running = 1;
     retval = self->body((PyObject *) self, value);
     self->is_running = 0;
-    if (retval)
-        __Pyx_ExceptionSwap(&self->exc_type, &self->exc_value, &self->exc_traceback);
-    else
+    if (retval) {
+        __Pyx_ExceptionSwap(&self->exc_type, &self->exc_value,
+                            &self->exc_traceback);
+#if CYTHON_COMPILING_IN_PYPY
+#else
+        /* Don't keep the reference to f_back any longer than necessary.  It
+         * may keep a chain of frames alive or it could create a reference
+         * cycle. */
+        if (self->exc_traceback) {
+            PyTracebackObject *tb = (PyTracebackObject *) self->exc_traceback;
+            PyFrameObject *f = tb->tb_frame;
+            Py_CLEAR(f->f_back);
+        }
+#endif
+    } else {
         __Pyx_Generator_ExceptionClear(self);
+    }
     return retval;
 }
-static PyObject *__Pyx_Generator_Next(PyObject *self)
-{
-    return __Pyx_Generator_SendEx((__pyx_GeneratorObject *) self, Py_None);
+static CYTHON_INLINE
+PyObject *__Pyx_Generator_FinishDelegation(__pyx_GeneratorObject *gen) {
+    PyObject *ret;
+    PyObject *val = NULL;
+    __Pyx_Generator_Undelegate(gen);
+    __Pyx_PyGen_FetchStopIterationValue(&val);
+    ret = __Pyx_Generator_SendEx(gen, val);
+    Py_XDECREF(val);
+    return ret;
+}
+static PyObject *__Pyx_Generator_Next(PyObject *self) {
+    __pyx_GeneratorObject *gen = (__pyx_GeneratorObject*) self;
+    PyObject *yf = gen->yieldfrom;
+    if (unlikely(__Pyx_Generator_CheckRunning(gen)))
+        return NULL;
+    if (yf) {
+        PyObject *ret;
+        gen->is_running = 1;
+        ret = Py_TYPE(yf)->tp_iternext(yf);
+        gen->is_running = 0;
+        if (likely(ret)) {
+            return ret;
+        }
+        return __Pyx_Generator_FinishDelegation(gen);
+    }
+    return __Pyx_Generator_SendEx(gen, Py_None);
 }
-static PyObject *__Pyx_Generator_Send(PyObject *self, PyObject *value)
-{
-    return __Pyx_Generator_SendEx((__pyx_GeneratorObject *) self, value);
+static PyObject *__Pyx_Generator_Send(PyObject *self, PyObject *value) {
+    __pyx_GeneratorObject *gen = (__pyx_GeneratorObject*) self;
+    PyObject *yf = gen->yieldfrom;
+    if (unlikely(__Pyx_Generator_CheckRunning(gen)))
+        return NULL;
+    if (yf) {
+        PyObject *ret;
+        gen->is_running = 1;
+        if (__Pyx_Generator_CheckExact(yf)) {
+            ret = __Pyx_Generator_Send(yf, value);
+        } else {
+            if (value == Py_None)
+                ret = PyIter_Next(yf);
+            else
+                ret = PyObject_CallMethod(yf, (char*)"send", (char*)"O", value);
+        }
+        gen->is_running = 0;
+        if (likely(ret)) {
+            return ret;
+        }
+        return __Pyx_Generator_FinishDelegation(gen);
+    }
+    return __Pyx_Generator_SendEx(gen, value);
+}
+static int __Pyx_Generator_CloseIter(__pyx_GeneratorObject *gen, PyObject *yf) {
+    PyObject *retval = NULL;
+    int err = 0;
+    if (__Pyx_Generator_CheckExact(yf)) {
+        retval = __Pyx_Generator_Close(yf);
+        if (!retval)
+            return -1;
+    } else {
+        PyObject *meth;
+        gen->is_running = 1;
+        meth = PyObject_GetAttrString(yf, "close");
+        if (unlikely(!meth)) {
+            if (!PyErr_ExceptionMatches(PyExc_AttributeError)) {
+                PyErr_WriteUnraisable(yf);
+            }
+            PyErr_Clear();
+        } else {
+            retval = PyObject_CallFunction(meth, NULL);
+            Py_DECREF(meth);
+            if (!retval)
+                err = -1;
+        }
+        gen->is_running = 0;
+    }
+    Py_XDECREF(retval);
+    return err;
 }
-static PyObject *__Pyx_Generator_Close(PyObject *self)
-{
-    __pyx_GeneratorObject *generator = (__pyx_GeneratorObject *) self;
-    PyObject *retval;
+static PyObject *__Pyx_Generator_Close(PyObject *self) {
+    __pyx_GeneratorObject *gen = (__pyx_GeneratorObject *) self;
+    PyObject *retval, *raised_exception;
+    PyObject *yf = gen->yieldfrom;
+    int err = 0;
+    if (unlikely(__Pyx_Generator_CheckRunning(gen)))
+        return NULL;
+    if (yf) {
+        Py_INCREF(yf);
+        err = __Pyx_Generator_CloseIter(gen, yf);
+        __Pyx_Generator_Undelegate(gen);
+        Py_DECREF(yf);
+    }
+    if (err == 0)
 #if PY_VERSION_HEX < 0x02050000
-    PyErr_SetNone(PyExc_StopIteration);
+        PyErr_SetNone(PyExc_StopIteration);
 #else
-    PyErr_SetNone(PyExc_GeneratorExit);
+        PyErr_SetNone(PyExc_GeneratorExit);
 #endif
-    retval = __Pyx_Generator_SendEx(generator, NULL);
+    retval = __Pyx_Generator_SendEx(gen, NULL);
     if (retval) {
         Py_DECREF(retval);
         PyErr_SetString(PyExc_RuntimeError,
                         "generator ignored GeneratorExit");
         return NULL;
     }
-#if PY_VERSION_HEX < 0x02050000
-    if (PyErr_ExceptionMatches(PyExc_StopIteration))
-#else
-    if (PyErr_ExceptionMatches(PyExc_StopIteration)
-        || PyErr_ExceptionMatches(PyExc_GeneratorExit))
+    raised_exception = PyErr_Occurred();
+    if (!raised_exception
+        || raised_exception == PyExc_StopIteration
+#if PY_VERSION_HEX >= 0x02050000
+        || raised_exception == PyExc_GeneratorExit
+        || PyErr_GivenExceptionMatches(raised_exception, PyExc_GeneratorExit)
 #endif
+        || PyErr_GivenExceptionMatches(raised_exception, PyExc_StopIteration))
     {
-        PyErr_Clear();          /* ignore these errors */
+        if (raised_exception) PyErr_Clear();      /* ignore these errors */
         Py_INCREF(Py_None);
         return Py_None;
     }
     return NULL;
 }
-static PyObject *__Pyx_Generator_Throw(PyObject *self, PyObject *args)
-{
-    __pyx_GeneratorObject *generator = (__pyx_GeneratorObject *) self;
+static PyObject *__Pyx_Generator_Throw(PyObject *self, PyObject *args) {
+    __pyx_GeneratorObject *gen = (__pyx_GeneratorObject *) self;
     PyObject *typ;
     PyObject *tb = NULL;
     PyObject *val = NULL;
+    PyObject *yf = gen->yieldfrom;
     if (!PyArg_UnpackTuple(args, (char *)"throw", 1, 3, &typ, &val, &tb))
         return NULL;
+    if (unlikely(__Pyx_Generator_CheckRunning(gen)))
+        return NULL;
+    if (yf) {
+        PyObject *ret;
+        Py_INCREF(yf);
+#if PY_VERSION_HEX >= 0x02050000
+        if (PyErr_GivenExceptionMatches(typ, PyExc_GeneratorExit)) {
+            int err = __Pyx_Generator_CloseIter(gen, yf);
+            Py_DECREF(yf);
+            __Pyx_Generator_Undelegate(gen);
+            if (err < 0)
+                return __Pyx_Generator_SendEx(gen, NULL);
+            goto throw_here;
+        }
+#endif
+        gen->is_running = 1;
+        if (__Pyx_Generator_CheckExact(yf)) {
+            ret = __Pyx_Generator_Throw(yf, args);
+        } else {
+            PyObject *meth = PyObject_GetAttrString(yf, "throw");
+            if (unlikely(!meth)) {
+                Py_DECREF(yf);
+                if (!PyErr_ExceptionMatches(PyExc_AttributeError)) {
+                    gen->is_running = 0;
+                    return NULL;
+                }
+                PyErr_Clear();
+                __Pyx_Generator_Undelegate(gen);
+                gen->is_running = 0;
+                goto throw_here;
+            }
+            ret = PyObject_CallObject(meth, args);
+            Py_DECREF(meth);
+        }
+        gen->is_running = 0;
+        Py_DECREF(yf);
+        if (!ret) {
+            ret = __Pyx_Generator_FinishDelegation(gen);
+        }
+        return ret;
+    }
+throw_here:
     __Pyx_Raise(typ, val, tb, NULL);
-    return __Pyx_Generator_SendEx(generator, NULL);
+    return __Pyx_Generator_SendEx(gen, NULL);
 }
-static int
-__Pyx_Generator_traverse(PyObject *self, visitproc visit, void *arg)
-{
+static int __Pyx_Generator_traverse(PyObject *self, visitproc visit, void *arg) {
     __pyx_GeneratorObject *gen = (__pyx_GeneratorObject *) self;
     Py_VISIT(gen->closure);
     Py_VISIT(gen->classobj);
+    Py_VISIT(gen->yieldfrom);
     Py_VISIT(gen->exc_type);
     Py_VISIT(gen->exc_value);
     Py_VISIT(gen->exc_traceback);
     return 0;
 }
-static void
-__Pyx_Generator_dealloc(PyObject *self)
-{
+static int __Pyx_Generator_clear(PyObject *self) {
+    __pyx_GeneratorObject *gen = (__pyx_GeneratorObject *) self;
+    Py_CLEAR(gen->closure);
+    Py_CLEAR(gen->classobj);
+    Py_CLEAR(gen->yieldfrom);
+    Py_CLEAR(gen->exc_type);
+    Py_CLEAR(gen->exc_value);
+    Py_CLEAR(gen->exc_traceback);
+    return 0;
+}
+static void __Pyx_Generator_dealloc(PyObject *self) {
     __pyx_GeneratorObject *gen = (__pyx_GeneratorObject *) self;
     PyObject_GC_UnTrack(gen);
     if (gen->gi_weakreflist != NULL)
@@ -30168,16 +30956,10 @@ __Pyx_Generator_dealloc(PyObject *self)
             return;                     /* resurrected.  :( */
     }
     PyObject_GC_UnTrack(self);
-    Py_CLEAR(gen->closure);
-    Py_CLEAR(gen->classobj);
-    Py_CLEAR(gen->exc_type);
-    Py_CLEAR(gen->exc_value);
-    Py_CLEAR(gen->exc_traceback);
+    __Pyx_Generator_clear(self);
     PyObject_GC_Del(gen);
 }
-static void
-__Pyx_Generator_del(PyObject *self)
-{
+static void __Pyx_Generator_del(PyObject *self) {
     PyObject *res;
     PyObject *error_type, *error_value, *error_traceback;
     __pyx_GeneratorObject *gen = (__pyx_GeneratorObject *) self;
@@ -30206,11 +30988,13 @@ __Pyx_Generator_del(PyObject *self)
         _Py_NewReference(self);
         self->ob_refcnt = refcnt;
     }
+#if CYTHON_COMPILING_FOR_CPYTHON
     assert(PyType_IS_GC(self->ob_type) &&
            _Py_AS_GC(self)->gc.gc_refs != _PyGC_REFS_UNTRACKED);
     /* If Py_REF_DEBUG, _Py_NewReference bumped _Py_RefTotal, so
      * we need to undo that. */
     _Py_DEC_REFTOTAL;
+#endif
     /* If Py_TRACE_REFS, _Py_NewReference re-added self to the object
      * chain, so no more to do there.
      * If COUNT_ALLOCS, the original decref bumped tp_frees, and
@@ -30218,13 +31002,17 @@ __Pyx_Generator_del(PyObject *self)
      * undone.
      */
 #ifdef COUNT_ALLOCS
-    --self->ob_type->tp_frees;
-    --self->ob_type->tp_allocs;
+    --Py_TYPE(self)->tp_frees;
+    --Py_TYPE(self)->tp_allocs;
 #endif
 }
 static PyMemberDef __pyx_Generator_memberlist[] = {
     {(char *) "gi_running",
+#if PY_VERSION_HEX >= 0x02060000
+     T_BOOL,
+#else
      T_INT,
+#endif
      offsetof(__pyx_GeneratorObject, is_running),
      READONLY,
      NULL},
@@ -30236,7 +31024,7 @@ static PyMethodDef __pyx_Generator_methods[] = {
     {__Pyx_NAMESTR("close"), (PyCFunction) __Pyx_Generator_Close, METH_NOARGS, 0},
     {0, 0, 0, 0}
 };
-static PyTypeObject __pyx_GeneratorType = {
+static PyTypeObject __pyx_GeneratorType_type = {
     PyVarObject_HEAD_INIT(0, 0)
     __Pyx_NAMESTR("generator"),         /*tp_name*/
     sizeof(__pyx_GeneratorObject),      /*tp_basicsize*/
@@ -30257,7 +31045,7 @@ static PyTypeObject __pyx_GeneratorType = {
     0,                                  /*tp_hash*/
     0,                                  /*tp_call*/
     0,                                  /*tp_str*/
-    PyObject_GenericGetAttr,            /*tp_getattro*/
+    0,                                  /*tp_getattro*/
     0,                                  /*tp_setattro*/
     0,                                  /*tp_as_buffer*/
     Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags*/
@@ -30266,7 +31054,7 @@ static PyTypeObject __pyx_GeneratorType = {
     0,                                  /*tp_clear*/
     0,                                  /*tp_richcompare*/
     offsetof(__pyx_GeneratorObject, gi_weakreflist), /* tp_weaklistoffse */
-    PyObject_SelfIter,                  /*tp_iter*/
+    0,                                  /*tp_iter*/
     (iternextfunc) __Pyx_Generator_Next, /*tp_iternext*/
     __pyx_Generator_methods,            /*tp_methods*/
     __pyx_Generator_memberlist,         /*tp_members*/
@@ -30291,12 +31079,10 @@ static PyTypeObject __pyx_GeneratorType = {
     0,                                  /*tp_version_tag*/
 #endif
 };
-static
-__pyx_GeneratorObject *__Pyx_Generator_New(__pyx_generator_body_t body,
-                                           PyObject *closure)
-{
+static __pyx_GeneratorObject *__Pyx_Generator_New(__pyx_generator_body_t body,
+                                                  PyObject *closure) {
     __pyx_GeneratorObject *gen =
-        PyObject_GC_New(__pyx_GeneratorObject, &__pyx_GeneratorType);
+        PyObject_GC_New(__pyx_GeneratorObject, &__pyx_GeneratorType_type);
     if (gen == NULL)
         return NULL;
     gen->body = body;
@@ -30305,6 +31091,7 @@ __pyx_GeneratorObject *__Pyx_Generator_New(__pyx_generator_body_t body,
     gen->is_running = 0;
     gen->resume_label = 0;
     gen->classobj = NULL;
+    gen->yieldfrom = NULL;
     gen->exc_type = NULL;
     gen->exc_value = NULL;
     gen->exc_traceback = NULL;
@@ -30312,9 +31099,14 @@ __pyx_GeneratorObject *__Pyx_Generator_New(__pyx_generator_body_t body,
     PyObject_GC_Track(gen);
     return gen;
 }
-static int __pyx_Generator_init(void)
-{
-    return PyType_Ready(&__pyx_GeneratorType);
+static int __pyx_Generator_init(void) {
+    __pyx_GeneratorType_type.tp_getattro = PyObject_GenericGetAttr;
+    __pyx_GeneratorType_type.tp_iter = PyObject_SelfIter;
+    if (PyType_Ready(&__pyx_GeneratorType_type)) {
+        return -1;
+    }
+    __pyx_GeneratorType = &__pyx_GeneratorType_type;
+    return 0;
 }
 
 static int __Pyx_check_binary_version(void) {
diff --git a/python/src/_cdec.pyx b/python/src/_cdec.pyx
index e93474fe..af4e5f2f 100644
--- a/python/src/_cdec.pyx
+++ b/python/src/_cdec.pyx
@@ -25,6 +25,9 @@ decoder.register_feature_functions()
 class InvalidConfig(Exception): pass
 class ParseFailed(Exception): pass
 
+def set_silent(yn):
+    SetSilent(yn)
+
 def _make_config(config):
     for key, value in config.items():
         if isinstance(value, dict):
@@ -82,7 +85,7 @@ cdef class Decoder:
     property formalism:
         def __get__(self):
             cdef variables_map* conf = &self.dec.GetConf()
-            return conf[0]['formalism'].as_str()
+            return conf[0]['formalism'].as_str().c_str()
 
     def read_weights(self, weights):
         with open(weights) as fp:
diff --git a/python/src/decoder.pxd b/python/src/decoder.pxd
index a66166a2..b68b836e 100644
--- a/python/src/decoder.pxd
+++ b/python/src/decoder.pxd
@@ -15,9 +15,8 @@ cdef extern from "decoder/decoder.h":
         DecoderObserver()
 
     cdef cppclass Decoder:
-        Decoder(int argc, char** argv)
-        Decoder(istream* config_file)
-        bint Decode(string& inp, DecoderObserver* observer)
+        Decoder(istream* config_file) nogil
+        bint Decode(string& inp, DecoderObserver* observer) nogil
 
         # access this to either *read* or *write* to the decoder's last
         # weight vector (i.e., the weights of the finest past)
@@ -27,8 +26,8 @@ cdef extern from "decoder/decoder.h":
         variables_map& GetConf()
 
         # add grammar rules (currently only supported by SCFG decoders)
-        void AddSupplementalGrammarFromString(string& grammar_str)
-        void AddSupplementalGrammar(shared_ptr[Grammar] grammar)
+        void AddSupplementalGrammarFromString(string& grammar_str) nogil
+        void AddSupplementalGrammar(shared_ptr[Grammar] grammar) nogil
 
 cdef extern from "observer.h":
     cdef cppclass BasicObserver(DecoderObserver):
diff --git a/python/src/grammar.pxd b/python/src/grammar.pxd
index 833de2e3..0ffe80fa 100644
--- a/python/src/grammar.pxd
+++ b/python/src/grammar.pxd
@@ -35,11 +35,9 @@ cdef extern from "decoder/grammar.h":
 
     cdef cppclass Grammar:
         const_GrammarIter* GetRoot()
-        bint HasRuleForSpan(int i, int j, int distance)
-        unsigned GetCTFLevels()
         string GetGrammarName()
         void SetGrammarName(string)
 
     cdef cppclass TextGrammar(Grammar):
         TextGrammar()
-        void AddRule(shared_ptr[TRule]& rule)
+        void AddRule(shared_ptr[TRule]& rule) nogil
diff --git a/python/src/hypergraph.pxd b/python/src/hypergraph.pxd
index abd6759c..1ddc2e5d 100644
--- a/python/src/hypergraph.pxd
+++ b/python/src/hypergraph.pxd
@@ -31,30 +31,30 @@ cdef extern from "decoder/hg.h":
     ctypedef HypergraphNode const_HypergraphNode "const Hypergraph::Node"
 
     cdef cppclass Hypergraph:
-        Hypergraph(Hypergraph)
+        Hypergraph(Hypergraph) nogil
         vector[HypergraphNode] nodes_
         vector[HypergraphEdge] edges_
         int GoalNode()
         double NumberOfPaths()
-        void Reweight(vector[weight_t]& weights)
-        void Reweight(FastSparseVector& weights)
+        void Reweight(vector[weight_t]& weights) nogil
+        void Reweight(FastSparseVector& weights) nogil
         bint PruneInsideOutside(double beam_alpha,
                                 double density,
                                 EdgeMask* preserve_mask,
                                 bint use_sum_prod_semiring,
                                 double scale,
-                                bint safe_inside)
+                                bint safe_inside) nogil
 
 cdef extern from "decoder/viterbi.h":
-    prob_t ViterbiESentence(Hypergraph& hg, vector[WordID]* trans)
-    string ViterbiETree(Hypergraph& hg)
-    prob_t ViterbiFSentence(Hypergraph& hg, vector[WordID]* trans)
-    string ViterbiFTree(Hypergraph& hg)
-    FastSparseVector[weight_t] ViterbiFeatures(Hypergraph& hg)
+    prob_t ViterbiESentence(Hypergraph& hg, vector[WordID]* trans) nogil
+    string ViterbiETree(Hypergraph& hg) nogil
+    prob_t ViterbiFSentence(Hypergraph& hg, vector[WordID]* trans) nogil
+    string ViterbiFTree(Hypergraph& hg) nogil
+    FastSparseVector[weight_t] ViterbiFeatures(Hypergraph& hg) nogil
     FastSparseVector[weight_t] ViterbiFeatures(Hypergraph& hg, 
             FastSparseVector[weight_t]* weights,
-            bint fatal_dotprod_disagreement)
-    string JoshuaVisualizationString(Hypergraph& hg)
+            bint fatal_dotprod_disagreement) nogil
+    string JoshuaVisualizationString(Hypergraph& hg) nogil
 
 cdef extern from "decoder/hg_io.h" namespace "HypergraphIO":
     bint ReadFromJSON(istream* inp, Hypergraph* out)
@@ -65,7 +65,7 @@ cdef extern from "decoder/hg_io.h" namespace "HypergraphIO":
     string AsPLF(Lattice& lat, bint include_global_parentheses)
 
 cdef extern from "decoder/hg_intersect.h" namespace "HG":
-    bint Intersect(Lattice& target, Hypergraph* hg)
+    bint Intersect(Lattice& target, Hypergraph* hg) nogil
 
 cdef extern from "decoder/hg_sampler.h" namespace "HypergraphSampler":
     cdef cppclass Hypothesis:
@@ -75,14 +75,14 @@ cdef extern from "decoder/hg_sampler.h" namespace "HypergraphSampler":
     void sample_hypotheses(Hypergraph& hg, 
                            unsigned n, 
                            MT19937* rng, 
-                           vector[Hypothesis]* hypos)
+                           vector[Hypothesis]* hypos) nogil
     void sample_trees(Hypergraph& hg, 
                       unsigned n, 
                       MT19937* rng, 
-                      vector[string]* trees)
+                      vector[string]* trees) nogil
 
 cdef extern from "decoder/csplit.h" namespace "CompoundSplit":
     int GetFullWordEdgeIndex(Hypergraph& forest)
 
 cdef extern from "decoder/inside_outside.h":
-    prob_t InsideOutside "InsideOutside<prob_t, EdgeProb, SparseVector<prob_t>, EdgeFeaturesAndProbWeightFunction>" (Hypergraph& hg, FastSparseVector[prob_t]* result)
+    prob_t InsideOutside "InsideOutside<prob_t, EdgeProb, SparseVector<prob_t>, EdgeFeaturesAndProbWeightFunction>" (Hypergraph& hg, FastSparseVector[prob_t]* result) nogil
diff --git a/python/src/hypergraph.pxi b/python/src/hypergraph.pxi
index 62dd5bb1..f0312a12 100644
--- a/python/src/hypergraph.pxi
+++ b/python/src/hypergraph.pxi
@@ -10,6 +10,11 @@ cdef class Hypergraph:
         if self.rng != NULL:
             del self.rng
 
+    cdef MT19937* _rng(self):
+        if self.rng == NULL:
+            self.rng = new MT19937()
+        return self.rng
+
     def viterbi(self):
         cdef vector[WordID] trans
         hypergraph.ViterbiESentence(self.hg[0], &trans)
@@ -75,9 +80,7 @@ cdef class Hypergraph:
 
     def sample(self, unsigned n):
         cdef vector[hypergraph.Hypothesis]* hypos = new vector[hypergraph.Hypothesis]()
-        if self.rng == NULL:
-            self.rng = new MT19937()
-        hypergraph.sample_hypotheses(self.hg[0], n, self.rng, hypos)
+        hypergraph.sample_hypotheses(self.hg[0], n, self._rng(), hypos)
         cdef unsigned k
         try:
             for k in range(hypos.size()):
@@ -87,9 +90,7 @@ cdef class Hypergraph:
 
     def sample_trees(self, unsigned n):
        cdef vector[string]* trees = new vector[string]()
-       if self.rng == NULL:
-           self.rng = new MT19937()
-       hypergraph.sample_trees(self.hg[0], n, self.rng, trees)
+       hypergraph.sample_trees(self.hg[0], n, self._rng(), trees)
        cdef unsigned k
        try:
            for k in range(trees.size()):
diff --git a/python/src/kbest.pxd b/python/src/kbest.pxd
index cef42bd3..44ecfbab 100644
--- a/python/src/kbest.pxd
+++ b/python/src/kbest.pxd
@@ -16,5 +16,5 @@ cdef extern from "decoder/kbest.h" namespace "KBest":
     cdef cppclass KBestDerivations[T, Traversal]:
         cppclass Derivation:
             T _yield "yield"
-        KBestDerivations(Hypergraph& hg, unsigned k)
-        Derivation* LazyKthBest(unsigned v, unsigned k)
+        KBestDerivations(Hypergraph& hg, unsigned k) nogil
+        Derivation* LazyKthBest(unsigned v, unsigned k) nogil
author	Victor Chahuneau <vchahune@cs.cmu.edu>	2012-08-08 18:56:02 -0400
committer	Victor Chahuneau <vchahune@cs.cmu.edu>	2012-08-08 18:56:02 -0400
commit	e0eabf1e59cbfa85b00efcff699cdcd6a524e9c5 (patch)
tree	e6d013ebdb0eafc8e1e380e84549460847d685ac
parent	cc5584e9b066e6d1177495f7028ff49ab057ed52 (diff)