mirror of
https://github.com/moses-smt/mosesdecoder.git
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66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
#ifndef moses_PhraseBoundaryFeature_h
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#define moses_PhraseBoundaryFeature_h
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#include <sstream>
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#include <string>
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#include "FeatureFunction.h"
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#include "FFState.h"
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#include "Word.h"
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namespace Moses
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{
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class PhraseBoundaryState : public FFState {
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public:
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PhraseBoundaryState(const Word* sourceWord, const Word* targetWord) :
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m_sourceWord(sourceWord), m_targetWord(targetWord) {}
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const Word* GetSourceWord() const {return m_sourceWord;}
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const Word* GetTargetWord() const {return m_targetWord;}
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virtual int Compare(const FFState& other) const;
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private:
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const Word* m_sourceWord;
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const Word* m_targetWord;
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};
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/**
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* Concatenations of factors on boundaries of phrases.
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**/
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class PhraseBoundaryFeature : public StatefulFeatureFunction {
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public:
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PhraseBoundaryFeature(const std::string &line);
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size_t GetNumScoreComponents() const;
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virtual const FFState* EmptyHypothesisState(const InputType &) const;
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virtual FFState* Evaluate(const Hypothesis& cur_hypo, const FFState* prev_state,
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ScoreComponentCollection* accumulator) const;
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virtual FFState* EvaluateChart( const ChartHypothesis& /* cur_hypo */,
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int /* featureID */,
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ScoreComponentCollection* ) const
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{
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abort();
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}
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void SetSparseProducerWeight(float weight) { m_sparseProducerWeight = weight; }
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float GetSparseProducerWeight() const { return m_sparseProducerWeight; }
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private:
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void AddFeatures(
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const Word* leftWord, const Word* rightWord, const FactorList& factors,
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const std::string& side, ScoreComponentCollection* scores) const ;
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FactorList m_sourceFactors;
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FactorList m_targetFactors;
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float m_sparseProducerWeight;
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};
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}
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#endif
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