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#ifndef _FF_RULES_H_
#define _FF_RULES_H_
#include <vector>
#include <map>
#include "ff.h"
#include "array2d.h"
#include "wordid.h"
class RuleIdentityFeatures : public FeatureFunction {
public:
RuleIdentityFeatures(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;
virtual void PrepareForInput(const SentenceMetadata& smeta);
private:
mutable std::map<const TRule*, int> rule2_fid_;
};
class RuleSourceBigramFeatures : public FeatureFunction {
public:
RuleSourceBigramFeatures(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;
virtual void PrepareForInput(const SentenceMetadata& smeta);
private:
mutable std::map<const TRule*, SparseVector<double> > rule2_feats_;
};
class RuleTargetBigramFeatures : public FeatureFunction {
public:
RuleTargetBigramFeatures(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;
virtual void PrepareForInput(const SentenceMetadata& smeta);
private:
mutable std::map<const TRule*, SparseVector<double> > rule2_feats_;
};
#endif
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