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#ifndef _NS_CER_H_
#define _NS_CER_H_
#include "ns.h"
class CERMetric : public EvaluationMetric {
friend class EvaluationMetric;
private:
unsigned EditDistance(const std::string& hyp,
const std::string& ref) const;
protected:
CERMetric() : EvaluationMetric("CER") {}
public:
virtual bool IsErrorMetric() const;
virtual unsigned SufficientStatisticsVectorSize() const;
virtual void ComputeSufficientStatistics(const std::vector<WordID>& hyp,
const std::vector<std::vector<WordID> >& refs,
SufficientStats* out) const;
virtual float ComputeScore(const SufficientStats& stats) const;
};
#endif
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