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#pragma once
#include "StatelessFeatureFunction.h"
namespace Moses
{
class PhraseDistanceFeature : public StatelessFeatureFunction
{
enum Measure {
EuclideanDistance,
TotalVariationDistance,
};
public:
PhraseDistanceFeature(const std::string &line);
bool IsUseable(const FactorMask &mask) const {
return true;
}
virtual void EvaluateInIsolation(const Phrase &source
, const TargetPhrase &targetPhrase
, ScoreComponentCollection &scoreBreakdown
, ScoreComponentCollection &estimatedScores) const {
}
void EvaluateWhenApplied(const Hypothesis& hypo,
ScoreComponentCollection* accumulator) const {
}
void EvaluateWhenApplied(const ChartHypothesis &hypo,
ScoreComponentCollection* accumulator) const {
}
void EvaluateWhenApplied(const Syntax::SHyperedge &hyperedge,
ScoreComponentCollection* accumulator) const {
}
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 {
}
void SetParameter(const std::string& key, const std::string& value);
protected:
Measure m_measure;
std::string m_space;
size_t m_spaceID;
};
} //namespace
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