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#pragma once
#include <string>
#include <boost/unordered_set.hpp>
#include <util/string_piece.hh>
#include "moses/Factor.h"
#include "moses/Sentence.h"
#include "StatelessFeatureFunction.h"
namespace Moses
{
class SparseHieroReorderingFeature : public StatelessFeatureFunction
{
public:
enum Type {
SourceCombined,
SourceLeft,
SourceRight
};
SparseHieroReorderingFeature(const std::string &line);
bool IsUseable(const FactorMask &mask) const {
return true;
}
void SetParameter(const std::string& key, const std::string& value);
void EvaluateInIsolation(const Phrase &source
, const TargetPhrase &targetPhrase
, ScoreComponentCollection &scoreBreakdown
, ScoreComponentCollection &estimatedScores) const {
}
virtual void EvaluateWithSourceContext(const InputType &input
, const InputPath &inputPath
, const TargetPhrase &targetPhrase
, const StackVec *stackVec
, ScoreComponentCollection &scoreBreakdown
, ScoreComponentCollection *estimatedScores = NULL) const {
}
void EvaluateTranslationOptionListWithSourceContext(const InputType &input
, const TranslationOptionList &translationOptionList) const {
}
virtual void EvaluateWhenApplied(const Hypothesis& hypo,
ScoreComponentCollection* accumulator) const {
}
void EvaluateWhenApplied(const ChartHypothesis &hypo,
ScoreComponentCollection* accumulator) const;
private:
typedef boost::unordered_set<const Factor*> Vocab;
void AddNonTerminalPairFeatures(
const Sentence& sentence, const Range& nt1, const Range& nt2,
bool isMonotone, ScoreComponentCollection* accumulator) const;
void LoadVocabulary(const std::string& filename, Vocab& vocab);
const Factor* GetFactor(const Word& word, const Vocab& vocab, FactorType factor) const;
Type m_type;
FactorType m_sourceFactor;
FactorType m_targetFactor;
std::string m_sourceVocabFile;
std::string m_targetVocabFile;
const Factor* m_otherFactor;
Vocab m_sourceVocab;
Vocab m_targetVocab;
};
}
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