mirror of
https://github.com/moses-smt/mosesdecoder.git
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249 lines
7.5 KiB
C++
249 lines
7.5 KiB
C++
// -*- c++ -*-
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// $Id$
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/***********************************************************************
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Moses - factored phrase-based language decoder
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Copyright (C) 2006 University of Edinburgh
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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***********************************************************************/
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#ifndef moses_TargetPhrase_h
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#define moses_TargetPhrase_h
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#include <algorithm>
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#include <vector>
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#include "TypeDef.h"
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#include "Phrase.h"
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#include "ScoreComponentCollection.h"
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#include "AlignmentInfo.h"
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#include "AlignmentInfoCollection.h"
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#include "moses/PP/PhraseProperty.h"
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#include "util/string_piece.hh"
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#include <boost/shared_ptr.hpp>
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#include <boost/unordered_map.hpp>
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#ifdef HAVE_PROTOBUF
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#include "rule.pb.h"
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#endif
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namespace Moses
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{
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class FeatureFunction;
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class InputPath;
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class InputPath;
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class PhraseDictionary;
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/** represents an entry on the target side of a phrase table (scores, translation, alignment)
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*/
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class TargetPhrase: public Phrase
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{
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public:
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typedef std::map<FeatureFunction const*, boost::shared_ptr<Scores> >
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ScoreCache_t;
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ScoreCache_t const& GetExtraScores() const;
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Scores const* GetExtraScores(FeatureFunction const* ff) const;
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void SetExtraScores(FeatureFunction const* ff,
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boost::shared_ptr<Scores> const& scores);
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private:
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ScoreCache_t m_cached_scores;
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private:
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friend std::ostream& operator<<(std::ostream&, const TargetPhrase&);
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friend void swap(TargetPhrase &first, TargetPhrase &second);
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float m_fullScore, m_futureScore;
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ScoreComponentCollection m_scoreBreakdown;
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const AlignmentInfo* m_alignTerm, *m_alignNonTerm;
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const Word *m_lhsTarget;
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mutable Phrase *m_ruleSource; // to be set by the feature function that needs it.
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typedef std::map<std::string, boost::shared_ptr<PhraseProperty> > Properties;
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Properties m_properties;
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const PhraseDictionary *m_container;
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mutable boost::unordered_map<const std::string, boost::shared_ptr<void> > m_data;
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public:
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TargetPhrase(const PhraseDictionary *pt = NULL);
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TargetPhrase(std::string out_string, const PhraseDictionary *pt = NULL);
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TargetPhrase(const TargetPhrase ©);
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explicit TargetPhrase(const Phrase &targetPhrase, const PhraseDictionary *pt);
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~TargetPhrase();
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// 1st evaluate method. Called during loading of phrase table.
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void EvaluateInIsolation(const Phrase &source, const std::vector<FeatureFunction*> &ffs);
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// as above, score with ALL FFs
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// Used only for OOV processing. Doesn't have a phrase table connect with it
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void EvaluateInIsolation(const Phrase &source);
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// 'inputPath' is guaranteed to be the raw substring from the input. No factors were added or taken away
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void EvaluateWithSourceContext(const InputType &input, const InputPath &inputPath);
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void UpdateScore(ScoreComponentCollection *futureScoreBreakdown = NULL);
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void SetSparseScore(const FeatureFunction* translationScoreProducer, const StringPiece &sparseString);
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// used to set translation or gen score
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void SetXMLScore(float score);
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#ifdef HAVE_PROTOBUF
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void WriteToRulePB(hgmert::Rule* pb) const;
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#endif
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/***
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* return the estimated score resulting from our being added to a sentence
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* (it's an estimate because we don't have full n-gram info for the language model
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* without using the (unknown) full sentence)
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*
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*/
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inline float GetFutureScore() const {
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return m_fullScore;
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}
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inline const ScoreComponentCollection &GetScoreBreakdown() const {
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return m_scoreBreakdown;
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}
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inline ScoreComponentCollection &GetScoreBreakdown() {
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return m_scoreBreakdown;
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}
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/*
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//TODO: Probably shouldn't copy this, but otherwise ownership is unclear
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void SetSourcePhrase(const Phrase& p) {
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m_sourcePhrase=p;
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}
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const Phrase& GetSourcePhrase() const {
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return m_sourcePhrase;
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}
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*/
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void SetTargetLHS(const Word *lhs) {
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m_lhsTarget = lhs;
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}
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const Word &GetTargetLHS() const {
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return *m_lhsTarget;
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}
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void SetAlignmentInfo(const StringPiece &alignString);
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void SetAlignTerm(const AlignmentInfo *alignTerm) {
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m_alignTerm = alignTerm;
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}
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void SetAlignNonTerm(const AlignmentInfo *alignNonTerm) {
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m_alignNonTerm = alignNonTerm;
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}
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// ALNREP = alignment representation,
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// see AlignmentInfo constructors for supported representations
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template<typename ALNREP>
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void
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SetAlignTerm(const ALNREP &coll) {
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m_alignTerm = AlignmentInfoCollection::Instance().Add(coll);
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}
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// ALNREP = alignment representation,
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// see AlignmentInfo constructors for supported representations
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template<typename ALNREP>
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void
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SetAlignNonTerm(const ALNREP &coll) {
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m_alignNonTerm = AlignmentInfoCollection::Instance().Add(coll);
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}
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const AlignmentInfo &GetAlignTerm() const {
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return *m_alignTerm;
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}
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const AlignmentInfo &GetAlignNonTerm() const {
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return *m_alignNonTerm;
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}
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const Phrase *GetRuleSource() const {
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return m_ruleSource;
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}
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const PhraseDictionary *GetContainer() const {
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return m_container;
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}
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bool SetData(const std::string& key, boost::shared_ptr<void> value) const {
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std::pair< boost::unordered_map<const std::string, boost::shared_ptr<void> >::iterator, bool > inserted =
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m_data.insert( std::pair<const std::string, boost::shared_ptr<void> >(key,value) );
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if (!inserted.second) {
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return false;
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}
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return true;
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}
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boost::shared_ptr<void> GetData(const std::string& key) const {
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boost::unordered_map<const std::string, boost::shared_ptr<void> >::const_iterator found = m_data.find(key);
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if (found == m_data.end()) {
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return boost::shared_ptr<void>();
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}
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return found->second;
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}
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// To be set by the FF that needs it, by default the rule source = NULL
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// make a copy of the source side of the rule
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void SetRuleSource(const Phrase &ruleSource) const;
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void SetProperties(const StringPiece &str);
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void SetProperty(const std::string &key, const std::string &value);
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const PhraseProperty *GetProperty(const std::string &key) const;
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void Merge(const TargetPhrase ©, const std::vector<FactorType>& factorVec);
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bool operator< (const TargetPhrase &compare) const; // NOT IMPLEMENTED
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bool operator== (const TargetPhrase &compare) const; // NOT IMPLEMENTED
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TO_STRING();
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};
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void swap(TargetPhrase &first, TargetPhrase &second);
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std::ostream& operator<<(std::ostream&, const TargetPhrase&);
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/**
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* Hasher that looks at source and target phrase.
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**/
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struct TargetPhraseHasher {
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inline size_t operator()(const TargetPhrase& targetPhrase) const {
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size_t seed = 0;
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boost::hash_combine(seed, targetPhrase);
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boost::hash_combine(seed, targetPhrase.GetAlignTerm());
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boost::hash_combine(seed, targetPhrase.GetAlignNonTerm());
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return seed;
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}
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};
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struct TargetPhraseComparator {
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inline bool operator()(const TargetPhrase& lhs, const TargetPhrase& rhs) const {
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return lhs.Compare(rhs) == 0 &&
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lhs.GetAlignTerm() == rhs.GetAlignTerm() &&
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lhs.GetAlignNonTerm() == rhs.GetAlignNonTerm();
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}
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};
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}
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#endif
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