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// $Id: LanguageModelSRI.h 1898 2008-10-09 00:20:39Z hieuhoang1972 $
/***********************************************************************
Moses - factored phrase-based language decoder
Copyright (C) 2006 University of Edinburgh
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
***********************************************************************/
#pragma once
#include <string>
#include <vector>
#include "Factor.h"
#include "TypeDef.h"
#include "Vocab.h"
#include "LanguageModelSingleFactor.h"
class Factor;
class Phrase;
class Ngram; // SRI forward decl
namespace Moses
{
class LanguageModelSRI : public LanguageModelSingleFactor
{
protected:
std::vector<VocabIndex> m_lmIdLookup;
Vocab *m_srilmVocab;
Ngram *m_srilmModel;
VocabIndex m_unknownId;
float GetValue(VocabIndex wordId, VocabIndex *context) const;
void CreateFactors();
VocabIndex GetLmID( const std::string &str ) const;
VocabIndex GetLmID( const Factor *factor ) const;
public:
LanguageModelSRI(bool registerScore, ScoreIndexManager &scoreIndexManager);
~LanguageModelSRI();
bool Load(const std::string &filePath
, FactorType factorType
, float weight
, size_t nGramOrder);
virtual float GetValue(const std::vector<const Word*> &contextFactor, State* finalState = 0, unsigned int* len = 0) const;
};
}
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