3 files changed, 18 insertions, 2 deletions

diff --git a/utils/dict.h b/utils/dict.h
index 75ea3def..a3400868 100644
--- a/utils/dict.h
+++ b/utils/dict.h
@@ -1,7 +1,6 @@
 #ifndef DICT_H_
 #define DICT_H_
 
-
 #include <cassert>
 #include <cstring>
 
@@ -74,6 +73,7 @@ class Dict {
   inline const std::string& Convert(const WordID& id) const {
     if (id == 0) return b0_;
     assert(id <= (int)words_.size());
+    //if (id < 0 || id > (int)words_.size()) return b0_;
     return words_[id-1];
   }
 
diff --git a/utils/fast_sparse_vector.h b/utils/fast_sparse_vector.h
index 1301581a..8fe6cb3d 100644
--- a/utils/fast_sparse_vector.h
+++ b/utils/fast_sparse_vector.h
@@ -190,6 +190,14 @@ class FastSparseVector {
     else
       return local_size_;
   }
+  size_t size_nonzero() const {
+    size_t sz = 0;
+    const_iterator it = this->begin();
+    for (; it != this->end(); ++it) {
+      if (nonzero(it->first)) sz++; 
+    }
+    return sz;
+  }
   inline void clear() {
     if (is_remote_) delete data_.rbmap;
     is_remote_ = false;
@@ -214,6 +222,14 @@ class FastSparseVector {
     }
     return *this;
   }
+  template <typename O>
+  inline FastSparseVector<O>& plus_eq_v_times_s(const FastSparseVector<O>& other, const O scalar) {
+    const typename FastSparseVector<O>::const_iterator end = other.end();
+    for (typename FastSparseVector<O>::const_iterator it = other.begin(); it != end; ++it) {
+      get_or_create_bin(it->first) += it->second * scalar;
+    }
+    return *this;
+  }
   inline FastSparseVector& operator-=(const FastSparseVector& other) {
     const typename FastSparseVector::const_iterator end = other.end();
     for (typename FastSparseVector::const_iterator it = other.begin(); it != end; ++it) {
diff --git a/utils/sampler.h b/utils/sampler.h
index 153e7ef1..cae660d2 100644
--- a/utils/sampler.h
+++ b/utils/sampler.h
@@ -32,7 +32,7 @@ struct RandomNumberGenerator {
       std::cerr << "Warning: could not read from /dev/urandom. Seeding from clock" << std::endl;
       seed = std::time(NULL);
     }
-    std::cerr << "Seeding random number sequence to " << seed << std::endl;
+    //std::cerr << "Seeding random number sequence to " << seed << std::endl;
     return seed;
   }