mosesdecoder/mert/CderScorer.h

#ifndef MERT_CDER_SCORER_H_
#define MERT_CDER_SCORER_H_

#include <string>
#include <vector>
#include "Types.h"
#include "Scorer.h"

/**
 * CderScorer class can compute both CDER and WER metric.
 */
class CderScorer: public StatisticsBasedScorer {
 public:
  explicit CderScorer(const std::string& config, bool allowed_long_jumps = true);
  ~CderScorer();

  virtual void setReferenceFiles(const std::vector<std::string>& referenceFiles);

  virtual void prepareStats(std::size_t sid, const std::string& text, ScoreStats& entry);

  virtual void prepareStatsVector(std::size_t sid, const std::string& text, std::vector<int>& stats);

  virtual std::size_t NumberOfScores() const { return 2; }

  virtual float calculateScore(const std::vector<int>& comps) const;

 private:
  bool m_allowed_long_jumps;

  typedef std::vector<int> sent_t;
  std::vector<std::vector<sent_t> > m_ref_sentences;

  void computeCD(const sent_t& cand, const sent_t& ref,
                 std::vector<int>& stats) const;

  // no copying allowed
  CderScorer(const CderScorer&);
  CderScorer& operator=(const CderScorer&);
};

#endif  // MERT_CDER_SCORER_H_