#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