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https://github.com/moses-smt/mosesdecoder.git
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93 lines
3.3 KiB
C++
93 lines
3.3 KiB
C++
/***********************************************************************
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Moses - factored phrase-based language decoder
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Copyright (C) 2010 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 _MIRA_DECODER_H_
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#define _MIRA_DECODER_H_
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#include <iostream>
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#include <cstring>
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#include <sstream>
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#include "BleuScoreFeature.h"
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#include "ChartTrellisPathList.h"
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#include "Hypothesis.h"
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#include "Parameter.h"
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#include "SearchNormal.h"
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#include "Sentence.h"
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#include "StaticData.h"
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//
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// Wrapper functions and objects for the decoder.
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//
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namespace Mira {
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/**
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* Initialise moses (including StaticData) using the given ini file and debuglevel, passing through any
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* other command line arguments.
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**/
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void initMoses(const std::string& inifile, int debuglevel, int argc, std::vector<std::string> decoder_params);
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/**
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* Wraps moses decoder.
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**/
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class MosesDecoder {
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public:
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MosesDecoder(bool scaleByInputLength, bool scaleByTargetLength, float historySmoothing);
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//returns the best sentence
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std::vector<const Moses::Word*> getNBest(const std::string& source,
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size_t sentenceid,
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size_t count,
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float bleuObjectiveweight, //weight of bleu in objective
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float bleuScoreWeight, //weight of bleu in score
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std::vector< Moses::ScoreComponentCollection>& featureValues,
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std::vector< float>& scores,
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bool oracle,
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bool distinct,
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size_t rank,
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size_t epoch);
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size_t getCurrentInputLength();
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void updateHistory(const std::vector<const Moses::Word*>& words);
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void updateHistory(const std::vector< std::vector< const Moses::Word*> >& words, std::vector<size_t>& sourceLengths, std::vector<size_t>& ref_ids, size_t rank, size_t epoch);
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void loadReferenceSentences(const std::vector<std::vector<std::string> >& refs);
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void printBleuFeatureHistory(std::ostream& out);
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void printReferenceLength(const std::vector<size_t>& ref_ids);
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size_t getReferenceLength(size_t ref_id);
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void setBleuSmoothingScheme(size_t scheme);
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Moses::ScoreComponentCollection getWeights();
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void setWeights(const Moses::ScoreComponentCollection& weights);
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void cleanup();
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private:
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float getBleuScore(const Moses::ScoreComponentCollection& scores);
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void setBleuScore(Moses::ScoreComponentCollection& scores, float bleu);
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Moses::Manager *m_manager;
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Moses::Sentence *m_sentence;
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Moses::BleuScoreFeature *m_bleuScoreFeature;
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};
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} //namespace
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#endif
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