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#ifndef moses_SourceWordDeletionFeature_h
#define moses_SourceWordDeletionFeature_h
#include <string>
#include <map>
#include "FeatureFunction.h"
#include "FactorCollection.h"
#include "AlignmentInfo.h"
namespace Moses
{
/** Sets the features for source word deletion
*/
class SourceWordDeletionFeature : public StatelessFeatureFunction {
private:
std::set<std::string> m_vocab;
FactorType m_factorType;
bool m_unrestricted;
public:
SourceWordDeletionFeature(FactorType factorType = 0):
StatelessFeatureFunction("swd", ScoreProducer::unlimited),
m_factorType(factorType),
m_unrestricted(true)
{
std::cerr << "Initializing source word deletion feature.." << std::endl;
}
bool Load(const std::string &filePath);
void Evaluate(const Hypothesis& cur_hypo,
ScoreComponentCollection* accumulator) const;
void EvaluateChart(const ChartHypothesis& cur_hypo,
int featureId,
ScoreComponentCollection* accumulator) const;
void ComputeFeatures(const TargetPhrase& targetPhrase,
ScoreComponentCollection* accumulator,
const AlignmentInfo::CollType &alignment) const;
// basic properties
std::string GetScoreProducerWeightShortName(unsigned) const { return "swd"; }
size_t GetNumInputScores() const { return 0; }
};
}
#endif // moses_SourceWordDeletionFeature_h
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