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#ifndef moses_PhraseLengthFeature_h
#define moses_PhraseLengthFeature_h
#include <string>
#include <map>
#include "FactorCollection.h"
#include "FeatureFunction.h"
#include "FFState.h"
#include "Word.h"
namespace Moses
{
/** Sets the features for length of source phrase, target phrase, both.
*/
class PhraseLengthFeature : public StatelessFeatureFunction {
public:
PhraseLengthFeature():
StatelessFeatureFunction("pl", ScoreProducer::unlimited)
{}
void Evaluate(const TargetPhrase& cur_phrase,
ScoreComponentCollection* accumulator) const;
void EvaluateChart(
const ChartHypothesis&,
int /* featureID */,
ScoreComponentCollection*) const {
CHECK(0); // feature function not valid in chart decoder
}
// basic properties
std::string GetScoreProducerWeightShortName(unsigned) const { return "pl"; }
size_t GetNumInputScores() const { return 0; }
};
}
#endif // moses_PhraseLengthFeature_h
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