mirror of
https://github.com/moses-smt/mosesdecoder.git
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301 lines
9.1 KiB
C++
301 lines
9.1 KiB
C++
// $Id$
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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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#include <algorithm>
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#include <stdlib.h>
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#include "util/exception.hh"
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#include "util/tokenize_piece.hh"
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#include "TargetPhrase.h"
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#include "GenerationDictionary.h"
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#include "LM/Base.h"
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#include "StaticData.h"
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#include "ScoreComponentCollection.h"
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#include "Util.h"
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#include "AlignmentInfoCollection.h"
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#include "InputPath.h"
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#include "moses/TranslationModel/PhraseDictionary.h"
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using namespace std;
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namespace Moses
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{
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TargetPhrase::TargetPhrase(const PhraseDictionary *pt)
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:Phrase()
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, m_fullScore(0.0)
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, m_futureScore(0.0)
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, m_alignTerm(&AlignmentInfoCollection::Instance().GetEmptyAlignmentInfo())
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, m_alignNonTerm(&AlignmentInfoCollection::Instance().GetEmptyAlignmentInfo())
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, m_lhsTarget(NULL)
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, m_ruleSource(NULL)
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, m_container(pt)
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{
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}
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TargetPhrase::TargetPhrase(const Phrase &phrase, const PhraseDictionary *pt)
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: Phrase(phrase)
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, m_fullScore(0.0)
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, m_futureScore(0.0)
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, m_alignTerm(&AlignmentInfoCollection::Instance().GetEmptyAlignmentInfo())
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, m_alignNonTerm(&AlignmentInfoCollection::Instance().GetEmptyAlignmentInfo())
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, m_lhsTarget(NULL)
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, m_ruleSource(NULL)
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, m_container(pt)
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{
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}
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TargetPhrase::TargetPhrase(const TargetPhrase ©)
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: Phrase(copy)
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, m_fullScore(copy.m_fullScore)
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, m_futureScore(copy.m_futureScore)
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, m_scoreBreakdown(copy.m_scoreBreakdown)
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, m_alignTerm(copy.m_alignTerm)
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, m_alignNonTerm(copy.m_alignNonTerm)
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, m_container(copy.m_container)
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{
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if (copy.m_lhsTarget) {
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m_lhsTarget = new Word(*copy.m_lhsTarget);
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} else {
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m_lhsTarget = NULL;
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}
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if (copy.m_ruleSource) {
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m_ruleSource = new Phrase(*copy.m_ruleSource);
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} else {
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m_ruleSource = NULL;
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}
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}
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TargetPhrase::~TargetPhrase()
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{
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//cerr << "m_lhsTarget=" << m_lhsTarget << endl;
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delete m_lhsTarget;
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delete m_ruleSource;
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}
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#ifdef HAVE_PROTOBUF
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void TargetPhrase::WriteToRulePB(hgmert::Rule* pb) const
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{
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pb->add_trg_words("[X,1]");
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for (size_t pos = 0 ; pos < GetSize() ; pos++)
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pb->add_trg_words(GetWord(pos)[0]->GetString());
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}
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#endif
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void TargetPhrase::EvaluateInIsolation(const Phrase &source)
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{
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const std::vector<FeatureFunction*> &ffs = FeatureFunction::GetFeatureFunctions();
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EvaluateInIsolation(source, ffs);
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}
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void TargetPhrase::EvaluateInIsolation(const Phrase &source, const std::vector<FeatureFunction*> &ffs)
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{
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if (ffs.size()) {
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const StaticData &staticData = StaticData::Instance();
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ScoreComponentCollection futureScoreBreakdown;
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for (size_t i = 0; i < ffs.size(); ++i) {
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const FeatureFunction &ff = *ffs[i];
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if (! staticData.IsFeatureFunctionIgnored( ff )) {
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ff.EvaluateInIsolation(source, *this, m_scoreBreakdown, futureScoreBreakdown);
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}
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}
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float weightedScore = m_scoreBreakdown.GetWeightedScore();
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m_futureScore += futureScoreBreakdown.GetWeightedScore();
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m_fullScore = weightedScore + m_futureScore;
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}
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}
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void TargetPhrase::EvaluateWithSourceContext(const InputType &input, const InputPath &inputPath)
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{
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const std::vector<FeatureFunction*> &ffs = FeatureFunction::GetFeatureFunctions();
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const StaticData &staticData = StaticData::Instance();
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ScoreComponentCollection futureScoreBreakdown;
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for (size_t i = 0; i < ffs.size(); ++i) {
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const FeatureFunction &ff = *ffs[i];
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if (! staticData.IsFeatureFunctionIgnored( ff )) {
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ff.EvaluateWithSourceContext(input, inputPath, *this, NULL, m_scoreBreakdown, &futureScoreBreakdown);
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}
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}
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float weightedScore = m_scoreBreakdown.GetWeightedScore();
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m_futureScore += futureScoreBreakdown.GetWeightedScore();
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m_fullScore = weightedScore + m_futureScore;
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}
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void TargetPhrase::SetXMLScore(float score)
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{
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const FeatureFunction* prod = PhraseDictionary::GetColl()[0];
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size_t numScores = prod->GetNumScoreComponents();
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vector <float> scoreVector(numScores,score/numScores);
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m_scoreBreakdown.Assign(prod, scoreVector);
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}
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void TargetPhrase::SetAlignmentInfo(const StringPiece &alignString)
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{
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AlignmentInfo::CollType alignTerm, alignNonTerm;
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for (util::TokenIter<util::AnyCharacter, true> token(alignString, util::AnyCharacter(" \t")); token; ++token) {
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util::TokenIter<util::SingleCharacter, false> dash(*token, util::SingleCharacter('-'));
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char *endptr;
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size_t sourcePos = strtoul(dash->data(), &endptr, 10);
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UTIL_THROW_IF(endptr != dash->data() + dash->size(), util::ErrnoException, "Error parsing alignment" << *dash);
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++dash;
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size_t targetPos = strtoul(dash->data(), &endptr, 10);
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UTIL_THROW_IF(endptr != dash->data() + dash->size(), util::ErrnoException, "Error parsing alignment" << *dash);
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UTIL_THROW_IF2(++dash, "Extra gunk in alignment " << *token);
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if (GetWord(targetPos).IsNonTerminal()) {
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alignNonTerm.insert(std::pair<size_t,size_t>(sourcePos, targetPos));
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} else {
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alignTerm.insert(std::pair<size_t,size_t>(sourcePos, targetPos));
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}
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}
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SetAlignTerm(alignTerm);
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SetAlignNonTerm(alignNonTerm);
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}
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void TargetPhrase::SetAlignTerm(const AlignmentInfo::CollType &coll)
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{
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const AlignmentInfo *alignmentInfo = AlignmentInfoCollection::Instance().Add(coll);
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m_alignTerm = alignmentInfo;
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}
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void TargetPhrase::SetAlignNonTerm(const AlignmentInfo::CollType &coll)
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{
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const AlignmentInfo *alignmentInfo = AlignmentInfoCollection::Instance().Add(coll);
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m_alignNonTerm = alignmentInfo;
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}
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void TargetPhrase::SetSparseScore(const FeatureFunction* translationScoreProducer, const StringPiece &sparseString)
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{
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m_scoreBreakdown.Assign(translationScoreProducer, sparseString.as_string());
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}
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void TargetPhrase::Merge(const TargetPhrase ©, const std::vector<FactorType>& factorVec)
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{
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Phrase::MergeFactors(copy, factorVec);
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m_scoreBreakdown.Merge(copy.GetScoreBreakdown());
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m_futureScore += copy.m_futureScore;
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m_fullScore += copy.m_fullScore;
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}
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void TargetPhrase::SetProperties(const StringPiece &str)
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{
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if (str.size() == 0) {
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return;
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}
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vector<string> toks;
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TokenizeMultiCharSeparator(toks, str.as_string(), "{{");
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for (size_t i = 0; i < toks.size(); ++i) {
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string &tok = toks[i];
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if (tok.empty()) {
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continue;
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}
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size_t endPos = tok.rfind("}");
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tok = tok.substr(0, endPos - 1);
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vector<string> keyValue = TokenizeFirstOnly(tok, " ");
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UTIL_THROW_IF2(keyValue.size() != 2,
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"Incorrect format of property: " << str);
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SetProperty(keyValue[0], keyValue[1]);
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}
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}
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void TargetPhrase::SetProperty(const std::string &key, const std::string &value)
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{
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const StaticData &staticData = StaticData::Instance();
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const PhrasePropertyFactory& phrasePropertyFactory = staticData.GetPhrasePropertyFactory();
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m_properties[key] = phrasePropertyFactory.ProduceProperty(key,value);
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}
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const PhraseProperty *TargetPhrase::GetProperty(const std::string &key) const
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{
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std::map<std::string, boost::shared_ptr<PhraseProperty> >::const_iterator iter;
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iter = m_properties.find(key);
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if (iter != m_properties.end()) {
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const boost::shared_ptr<PhraseProperty> &pp = iter->second;
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return pp.get();
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}
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return NULL;
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}
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void TargetPhrase::SetRuleSource(const Phrase &ruleSource) const
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{
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if (m_ruleSource == NULL) {
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m_ruleSource = new Phrase(ruleSource);
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}
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}
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void swap(TargetPhrase &first, TargetPhrase &second)
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{
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first.SwapWords(second);
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std::swap(first.m_fullScore, second.m_fullScore);
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std::swap(first.m_futureScore, second.m_futureScore);
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swap(first.m_scoreBreakdown, second.m_scoreBreakdown);
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std::swap(first.m_alignTerm, second.m_alignTerm);
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std::swap(first.m_alignNonTerm, second.m_alignNonTerm);
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std::swap(first.m_lhsTarget, second.m_lhsTarget);
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}
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TO_STRING_BODY(TargetPhrase);
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std::ostream& operator<<(std::ostream& os, const TargetPhrase& tp)
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{
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if (tp.m_lhsTarget) {
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os << *tp.m_lhsTarget<< " -> ";
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}
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os << static_cast<const Phrase&>(tp) << ":" << flush;
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os << tp.GetAlignNonTerm() << flush;
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os << ": c=" << tp.m_fullScore << flush;
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os << " " << tp.m_scoreBreakdown << flush;
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const Phrase *sourcePhrase = tp.GetRuleSource();
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if (sourcePhrase) {
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os << " sourcePhrase=" << *sourcePhrase << flush;
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}
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if (tp.m_properties.size()) {
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os << " properties: " << flush;
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TargetPhrase::Properties::const_iterator iter;
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for (iter = tp.m_properties.begin(); iter != tp.m_properties.end(); ++iter) {
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const string &key = iter->first;
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const PhraseProperty *prop = iter->second.get();
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assert(prop);
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os << key << "=" << *prop << " ";
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}
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}
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return os;
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}
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}
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