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https://github.com/moses-smt/mosesdecoder.git
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c610d0a6e7
The class StatefuleFeatureFunction now provides an empty dummy implementation of various (virtual) Evaluate... functions. The corresponding empty implementations on derived classes have been removed.
71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
#ifndef moses_PhraseBoundaryFeature_h
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#define moses_PhraseBoundaryFeature_h
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#include <stdexcept>
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#include <sstream>
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#include <string>
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#include "StatefulFeatureFunction.h"
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#include "moses/FF/FFState.h"
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#include "moses/Word.h"
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namespace Moses
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{
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class PhraseBoundaryState : public FFState
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{
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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 {
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return m_sourceWord;
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}
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const Word* GetTargetWord() const {
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return m_targetWord;
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}
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virtual size_t hash() const;
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virtual bool operator==(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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{
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public:
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PhraseBoundaryFeature(const std::string &line);
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bool IsUseable(const FactorMask &mask) const;
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virtual const FFState* EmptyHypothesisState(const InputType &) const;
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virtual FFState* EvaluateWhenApplied(const Hypothesis& cur_hypo, const FFState* prev_state,
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ScoreComponentCollection* accumulator) const;
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virtual FFState* EvaluateWhenApplied( const ChartHypothesis& /* cur_hypo */,
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int /* featureID */,
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ScoreComponentCollection* ) const {
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throw std::logic_error("PhraseBoundaryState not supported in chart decoder, yet");
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}
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void SetParameter(const std::string& key, const std::string& value);
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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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};
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}
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#endif
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