1 files changed, 16 insertions, 0 deletions
diff --git a/decoder/ff_wordalign.h b/decoder/ff_wordalign.h
index 0754d70e..30ddf7a1 100644
--- a/decoder/ff_wordalign.h
+++ b/decoder/ff_wordalign.h
@@ -234,4 +234,20 @@ class BlunsomSynchronousParseHack : public FeatureFunction {
   mutable std::vector<std::vector<WordID> > refs_;
 };
 
+class InputIdentity : public FeatureFunction {
+ public:
+  InputIdentity(const std::string& param);
+ protected:
+  virtual void TraversalFeaturesImpl(const SentenceMetadata& smeta,
+                                     const Hypergraph::Edge& edge,
+                                     const std::vector<const void*>& ant_contexts,
+                                     SparseVector<double>* features,
+                                     SparseVector<double>* estimated_features,
+                                     void* context) const;
+ private:
+  void FireFeature(WordID src,
+                   SparseVector<double>* features) const;
+  mutable Class2FID fmap_;
+};
+
 #endif