From 9be811a26da86b87bac8696f155188d9a675e61b Mon Sep 17 00:00:00 2001
From: Chris Dyer <redpony@gmail.com>
Date: Sat, 19 Dec 2009 15:08:02 -0500
Subject: few fixes

---
 decoder/ff_wordalign.cc | 11 +++++++++--
 decoder/ff_wordalign.h  |  2 ++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/decoder/ff_wordalign.cc b/decoder/ff_wordalign.cc
index f07eda02..c9f90541 100644
--- a/decoder/ff_wordalign.cc
+++ b/decoder/ff_wordalign.cc
@@ -144,6 +144,15 @@ SourcePOSBigram::SourcePOSBigram(const std::string& param) :
   cerr << "  (" << pos_.size() << " lines)\n";
 }
 
+void SourcePOSBigram::FinalTraversalFeatures(const void* context,
+                                      SparseVector<double>* features) const {
+  WordID left = *static_cast<const WordID*>(context);
+  int left_wc = *(static_cast<const int*>(context) + 1);
+  if (left_wc == 1)
+    FireFeature(-1, left, features);
+  FireFeature(left, -1, features);
+}
+
 void SourcePOSBigram::FireFeature(WordID left,
                    WordID right,
                    SparseVector<double>* features) const {
@@ -187,8 +196,6 @@ void SourcePOSBigram::TraversalFeaturesImpl(const SentenceMetadata& smeta,
       FireFeature(-1, left, features);
     FireFeature(left, right, features);
     out_word_count = left_wc + right_wc;
-    if (out_word_count == smeta.GetSourceLength())
-      FireFeature(right, -1, features);
     out_context = right;
   }
 }
diff --git a/decoder/ff_wordalign.h b/decoder/ff_wordalign.h
index 554dd23e..aea4c950 100644
--- a/decoder/ff_wordalign.h
+++ b/decoder/ff_wordalign.h
@@ -43,6 +43,8 @@ typedef std::map<WordID, Class2FID> Class2Class2FID;
 class SourcePOSBigram : public FeatureFunction {
  public:
   SourcePOSBigram(const std::string& param);
+  virtual void FinalTraversalFeatures(const void* context,
+                                      SparseVector<double>* features) const;
  protected:
   virtual void TraversalFeaturesImpl(const SentenceMetadata& smeta,
                                      const Hypergraph::Edge& edge,
-- 
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