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/*
* Distortion.h
*
* Created on: 28 Oct 2015
* Author: hieu
*/
#ifndef DISTORTION_H_
#define DISTORTION_H_
#include "StatefulFeatureFunction.h"
#include "../legacy/Range.h"
#include "../TypeDef.h"
namespace Moses2
{
class Distortion: public StatefulFeatureFunction
{
public:
Distortion(size_t startInd, const std::string &line);
virtual ~Distortion();
virtual FFState* BlankState(MemPool &pool, const System &sys) const;
virtual void EmptyHypothesisState(FFState &state, const ManagerBase &mgr,
const InputType &input, const Hypothesis &hypo) const;
virtual void
EvaluateInIsolation(MemPool &pool, const System &system, const Phrase<Moses2::Word> &source,
const TargetPhraseImpl &targetPhrase, Scores &scores,
SCORE &estimatedScore) const;
virtual void
EvaluateInIsolation(MemPool &pool, const System &system, const Phrase<SCFG::Word> &source,
const TargetPhrase<SCFG::Word> &targetPhrase, Scores &scores,
SCORE &estimatedScore) const;
virtual void EvaluateWhenApplied(const std::deque<Hypothesis*> &hypos) const {
}
virtual void EvaluateWhenApplied(const ManagerBase &mgr,
const Hypothesis &hypo, const FFState &prevState, Scores &scores,
FFState &state) const;
virtual void EvaluateWhenApplied(const SCFG::Manager &mgr,
const SCFG::Hypothesis &hypo, int featureID, Scores &scores,
FFState &state) const;
protected:
SCORE CalculateDistortionScore(const Range &prev, const Range &curr,
const int FirstGap) const;
int ComputeDistortionDistance(const Range& prev, const Range& current) const;
};
}
#endif /* DISTORTION_H_ */
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