Merge pull request #64 from kho/softsyn_2

Proper implementation of soft syntactic constraint features

1 files changed, 38 insertions, 0 deletions

diff --git a/decoder/ff_soft_syn.h b/decoder/ff_soft_syn.h
new file mode 100644
index 00000000..df9a6cc8
--- /dev/null
+++ b/decoder/ff_soft_syn.h
@@ -0,0 +1,38 @@
+/*
+ * ff_soft_syn.h
+ *
+ */
+
+#ifndef FF_SOFT_SYN_H_
+#define FF_SOFT_SYN_H_
+
+#include "ff_factory.h"
+#include "ff.h"
+
+struct SoftSynFeatureImpl;
+
+class SoftSynFeature : public FeatureFunction {
+ public:
+  SoftSynFeature(std::string param);
+  ~SoftSynFeature();
+  static std::string usage(bool param, bool verbose);
+
+ protected:
+  virtual void PrepareForInput(const SentenceMetadata& smeta);
+
+  virtual void TraversalFeaturesImpl(
+      const SentenceMetadata& smeta, const HG::Edge& edge,
+      const std::vector<const void*>& ant_contexts,
+      SparseVector<double>* features, SparseVector<double>* estimated_features,
+      void* out_context) const;
+
+ private:
+  SoftSynFeatureImpl* pimpl_;
+};
+
+struct SoftSynFeatureFactory : public FactoryBase<FeatureFunction> {
+  FP Create(std::string param) const;
+  std::string usage(bool params, bool verbose) const;
+};
+
+#endif /* FF_SOFT_SYN_H_ */