mosesdecoder/moses/FF/PhraseLengthFeature.h
2013-09-27 09:35:24 +01:00

52 lines
1.3 KiB
C++

#ifndef moses_PhraseLengthFeature_h
#define moses_PhraseLengthFeature_h
#include <stdexcept>
#include <string>
#include <map>
#include "StatelessFeatureFunction.h"
#include "moses/FF/FFState.h"
#include "moses/Word.h"
#include "moses/FactorCollection.h"
namespace Moses
{
/** Sets the features for length of source phrase, target phrase, both.
*/
class PhraseLengthFeature : public StatelessFeatureFunction
{
public:
PhraseLengthFeature(const std::string &line);
bool IsUseable(const FactorMask &mask) const {
return true;
}
void Evaluate(const Hypothesis& hypo,
ScoreComponentCollection* accumulator) const
{}
void EvaluateChart(const ChartHypothesis& hypo,
ScoreComponentCollection*) const {
throw std::logic_error("PhraseLengthFeature not valid in chart decoder");
}
void Evaluate(const InputType &input
, const InputPath &inputPath
, const TargetPhrase &targetPhrase
, ScoreComponentCollection &scoreBreakdown) const
{}
virtual void Evaluate(const Phrase &source
, const TargetPhrase &targetPhrase
, ScoreComponentCollection &scoreBreakdown
, ScoreComponentCollection &estimatedFutureScore) const;
};
}
#endif // moses_PhraseLengthFeature_h