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104 lines
2.7 KiB
C++
104 lines
2.7 KiB
C++
#ifndef MERT_SEMPOSOVERLAPPING_H_
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#define MERT_SEMPOSOVERLAPPING_H_
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#include <map>
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#include <set>
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#include <string>
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#include <utility>
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#include <vector>
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#include "Types.h"
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namespace MosesTuning
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{
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class SemposScorer;
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// TODO: need comments about this number.
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const int kMaxNOC = 50;
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typedef std::pair<std::string, std::string> str_item_t;
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typedef std::vector<str_item_t> str_sentence_t;
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typedef str_sentence_t::const_iterator str_sentence_it;
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typedef std::pair<int,int> item_t;
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typedef std::multiset<item_t> sentence_t;
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typedef sentence_t::const_iterator sentence_it;
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/**
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* An interface for classes representing overlapping formulas
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*/
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class SemposOverlapping
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{
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public:
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virtual ~SemposOverlapping() {}
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virtual std::vector<ScoreStatsType> prepareStats(const sentence_t& cand, const sentence_t& ref) = 0;
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virtual float calculateScore(const std::vector<ScoreStatsType>& stats) const = 0;
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virtual std::size_t NumberOfScores() const = 0;
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};
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class SemposOverlappingFactory
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{
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public:
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static SemposOverlapping* GetOverlapping(const std::string& str, const SemposScorer* sempos);
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// dependency injection for unit testing.
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static void SetOverlapping(SemposOverlapping* ovr);
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private:
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SemposOverlappingFactory() {}
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~SemposOverlappingFactory() {}
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};
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/**
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* Overlapping proposed by (Bojar and Machacek, WMT 2011)
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*
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* Please refer to the paper for details:
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* http://aclweb.org/anthology-new/W/W11/W11-2108.pdf
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*/
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class CapMicroOverlapping : public SemposOverlapping
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{
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public:
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CapMicroOverlapping(const SemposScorer* sempos) : semposScorer(sempos) {}
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~CapMicroOverlapping() {}
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virtual std::vector<ScoreStatsType> prepareStats(const sentence_t& cand, const sentence_t& ref);
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virtual float calculateScore(const std::vector<ScoreStatsType>& stats) const;
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virtual std::size_t NumberOfScores() const {
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return 2;
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}
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private:
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// no copying allowed.
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CapMicroOverlapping(const CapMicroOverlapping&);
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CapMicroOverlapping& operator=(const CapMicroOverlapping&);
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const SemposScorer* semposScorer;
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};
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/**
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* Overlapping proposed by (Kos and Bojar, 2009)
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*/
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class CapMacroOverlapping : public SemposOverlapping
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{
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public:
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CapMacroOverlapping(const SemposScorer* sempos) : semposScorer(sempos) {}
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~CapMacroOverlapping() {}
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virtual std::vector<ScoreStatsType> prepareStats(const sentence_t& cand, const sentence_t& ref);
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virtual float calculateScore(const std::vector<ScoreStatsType>& stats) const;
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virtual std::size_t NumberOfScores() const {
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return kMaxNOC * 2;
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}
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private:
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// no copying allowed.
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CapMacroOverlapping(const CapMacroOverlapping&);
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CapMacroOverlapping& operator=(const CapMacroOverlapping&);
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const SemposScorer* semposScorer;
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};
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}
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#endif // MERT_SEMPOSOVERLAPPING_H_
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