// -*- c++ -*-
// written by Ulrich Germann 
#pragma once
#include "moses/TranslationModel/UG/mm/ug_bitext.h"
#include "util/exception.hh"
#include "boost/format.hpp"

namespace Moses {
  namespace bitext
  {
    template<typename Token>
    class
    PScoreCoherence : public PhraseScorer<Token>
    {
    public:
      PScoreCoherence(string const dummy) 
      { 
	this->m_index = -1;
	this->m_num_feats = 1;
	this->m_feature_names.push_back(string("coherence"));
      }
      
      void 
      operator()(Bitext<Token> const& bt, 
		 PhrasePair<Token>& pp, 
		 vector<float> * dest = NULL) const
      {
	if (!dest) dest = &pp.fvals;
	(*dest)[this->m_index] = log(pp.good1) - log(pp.sample1);
      }
    };
  }
}