mirror of
https://github.com/moses-smt/mosesdecoder.git
synced 2024-10-26 19:37:58 +03:00
75 lines
1.7 KiB
C++
75 lines
1.7 KiB
C++
#pragma once
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#include <string>
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#include <map>
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#include "StatefulFeatureFunction.h"
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#include "FFState.h"
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#include "moses/Phrase.h"
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namespace Moses
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{
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class ConstrainedDecodingState : public FFState
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{
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public:
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ConstrainedDecodingState() {
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}
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ConstrainedDecodingState(const Hypothesis &hypo);
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ConstrainedDecodingState(const ChartHypothesis &hypo);
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virtual size_t hash() const;
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virtual bool operator==(const FFState& other) const;
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const Phrase &GetPhrase() const {
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return m_outputPhrase;
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}
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protected:
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Phrase m_outputPhrase;
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};
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//////////////////////////////////////////////////////////////////
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// only allow hypotheses which match reference
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class ConstrainedDecoding : public StatefulFeatureFunction
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{
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public:
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ConstrainedDecoding(const std::string &line);
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void Load(AllOptions::ptr const& opts);
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bool IsUseable(const FactorMask &mask) const {
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return true;
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}
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FFState* EvaluateWhenApplied(
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const Hypothesis& cur_hypo,
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const FFState* prev_state,
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ScoreComponentCollection* accumulator) const;
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FFState* EvaluateWhenApplied(
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const ChartHypothesis& /* cur_hypo */,
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int /* featureID - used to index the state in the previous hypotheses */,
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ScoreComponentCollection* accumulator) const;
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virtual const FFState* EmptyHypothesisState(const InputType &input) const {
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return new ConstrainedDecodingState();
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}
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std::vector<float> DefaultWeights() const;
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void SetParameter(const std::string& key, const std::string& value);
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protected:
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std::vector<std::string> m_paths;
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std::map<long, std::vector<Phrase> > m_constraints;
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int m_maxUnknowns;
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bool m_negate; // only keep translations which DON'T match the reference
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bool m_soft;
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};
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}
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