mirror of
https://github.com/moses-smt/mosesdecoder.git
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99 lines
3.0 KiB
C++
99 lines
3.0 KiB
C++
#ifndef moses_LexicalReordering_h
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#define moses_LexicalReordering_h
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#include <string>
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#include <vector>
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#include <boost/scoped_ptr.hpp>
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#include "moses/Factor.h"
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#include "moses/Phrase.h"
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#include "moses/TypeDef.h"
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#include "moses/Util.h"
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#include "moses/WordsRange.h"
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#include "moses/FF/StatefulFeatureFunction.h"
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#include "util/exception.hh"
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#include "LexicalReorderingState.h"
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#include "LexicalReorderingTable.h"
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#include "SparseReordering.h"
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namespace Moses
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{
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class Factor;
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class Phrase;
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class Hypothesis;
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class InputType;
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/** implementation of lexical reordering (Tilman ...) for phrase-based decoding
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*/
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class LexicalReordering : public StatefulFeatureFunction
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{
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public:
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LexicalReordering(const std::string &line);
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virtual ~LexicalReordering();
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void Load();
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virtual bool IsUseable(const FactorMask &mask) const;
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virtual const FFState* EmptyHypothesisState(const InputType &input) const;
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void InitializeForInput(const InputType& i) {
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m_table->InitializeForInput(i);
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}
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Scores GetProb(const Phrase& f, const Phrase& e) const;
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virtual FFState* EvaluateWhenApplied(const Hypothesis& cur_hypo,
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const FFState* prev_state,
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ScoreComponentCollection* accumulator) const;
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virtual FFState* EvaluateWhenApplied(const ChartHypothesis&,
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int /* featureID */,
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ScoreComponentCollection*) const {
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UTIL_THROW(util::Exception, "LexicalReordering is not valid for chart decoder");
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}
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void EvaluateWithSourceContext(const InputType &input
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, const InputPath &inputPath
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, const TargetPhrase &targetPhrase
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, const StackVec *stackVec
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, ScoreComponentCollection &scoreBreakdown
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, ScoreComponentCollection *estimatedFutureScore = NULL) const
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{}
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void EvaluateTranslationOptionListWithSourceContext(const InputType &input
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, const TranslationOptionList &translationOptionList) const
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{}
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void EvaluateInIsolation(const Phrase &source
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, const TargetPhrase &targetPhrase
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, ScoreComponentCollection &scoreBreakdown
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, ScoreComponentCollection &estimatedFutureScore) const
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{}
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bool GetHaveDefaultScores() { return m_haveDefaultScores; }
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float GetDefaultScore( size_t i ) { return m_defaultScores[i]; }
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private:
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bool DecodeCondition(std::string s);
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bool DecodeDirection(std::string s);
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bool DecodeNumFeatureFunctions(std::string s);
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boost::scoped_ptr<LexicalReorderingConfiguration> m_configuration;
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std::string m_modelTypeString;
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std::vector<std::string> m_modelType;
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boost::scoped_ptr<LexicalReorderingTable> m_table;
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//std::vector<Direction> m_direction;
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std::vector<LexicalReorderingConfiguration::Condition> m_condition;
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//std::vector<size_t> m_scoreOffset;
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//bool m_oneScorePerDirection;
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std::vector<FactorType> m_factorsE, m_factorsF;
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std::string m_filePath;
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bool m_haveDefaultScores;
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Scores m_defaultScores;
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};
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}
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#endif
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