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53 lines
1.2 KiB
C++
53 lines
1.2 KiB
C++
#ifndef __PERSCORER_H__
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#define __PERSCORER_H__
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#include <iostream>
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#include <set>
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#include <sstream>
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#include <string>
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#include <vector>
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#include "Types.h"
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#include "Scorer.h"
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using namespace std;
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class ScoreStats;
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/**
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* An implementation of position-independent word error rate.
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* This is defined as
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* 1 - (correct - max(0,output_length - ref_length)) / ref_length
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* In fact, we ignore the " 1 - " so that it can be maximised.
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*/
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class PerScorer: public StatisticsBasedScorer
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{
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public:
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explicit PerScorer(const string& config = "");
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~PerScorer();
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virtual void setReferenceFiles(const vector<string>& referenceFiles);
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virtual void prepareStats(size_t sid, const string& text, ScoreStats& entry);
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virtual void whoami() const {
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cerr << "I AM PerScorer" << std::endl;
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}
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virtual size_t NumberOfScores() const {
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// cerr << "PerScorer: 3" << endl;
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return 3;
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}
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virtual float calculateScore(const vector<int>& comps) const;
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private:
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// no copying allowed
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PerScorer(const PerScorer&);
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PerScorer& operator=(const PerScorer&);
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// data extracted from reference files
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vector<size_t> _reflengths;
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vector<multiset<int> > _reftokens;
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};
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#endif // __PERSCORER_H__
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