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67 lines
1.9 KiB
C++
67 lines
1.9 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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#ifndef moses_LanguageModelSRI_h
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#define moses_LanguageModelSRI_h
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#include <string>
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#include <vector>
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#include "moses/Factor.h"
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#include "moses/TypeDef.h"
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#include "SingleFactor.h"
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class Factor;
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class Phrase;
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class Vocab;
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class Ngram;
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namespace Moses
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{
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/** Implementation of single factor LM using IRST's code.
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*/
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class LanguageModelSRI : public LanguageModelPointerState
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{
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protected:
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std::vector<unsigned int> m_lmIdLookup;
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::Vocab *m_srilmVocab;
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Ngram *m_srilmModel;
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unsigned int m_unknownId;
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LMResult GetValue(unsigned int wordId, unsigned int *context) const;
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void CreateFactors();
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unsigned int GetLmID( const std::string &str ) const;
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unsigned int GetLmID( const Factor *factor ) const;
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public:
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LanguageModelSRI();
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~LanguageModelSRI();
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bool Load(const std::string &filePath
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, FactorType factorType
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, size_t nGramOrder);
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virtual LMResult GetValue(const std::vector<const Word*> &contextFactor, State* finalState = 0) const;
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};
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}
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#endif
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