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// $Id$
/***********************************************************************
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
***********************************************************************/
#include <iostream>
#include "Factory.h"
#include "moses/UserMessage.h"
#include "moses/TypeDef.h"
#include "moses/FactorCollection.h"
// include appropriate header
#ifdef LM_SRI
# include "SRI.h"
#include "ParallelBackoff.h"
#include "Local.h"
#endif
#ifdef LM_IRST
# include "IRST.h"
#endif
#ifdef LM_RAND
# include "Rand.h"
#endif
#include "ORLM.h"
#ifdef LM_REMOTE
# include "Remote.h"
#endif
#include "Ken.h"
#ifdef LM_LDHT
# include "LDHT.h"
#endif
#include "Base.h"
#include "Joint.h"
using namespace std;
namespace Moses
{
namespace LanguageModelFactory
{
LanguageModel* CreateLanguageModel(LMImplementation lmImplementation
, const std::vector<FactorType> &factorTypes
, size_t nGramOrder
, const std::string &languageModelFile
, int dub)
{
if (lmImplementation == Ken || lmImplementation == LazyKen) {
return ConstructKenLM(languageModelFile, factorTypes[0], lmImplementation == LazyKen);
}
LanguageModelImplementation *lm = NULL;
switch (lmImplementation) {
case RandLM:
#ifdef LM_RAND
lm = NewRandLM();
#endif
break;
case ORLM:
lm = new LanguageModelORLM();
break;
case Remote:
#ifdef LM_REMOTE
lm = new LanguageModelRemote();
#endif
break;
case SRI:
#ifdef LM_SRI
lm = new LanguageModelSRI();
#endif
break;
case IRST:
#ifdef LM_IRST
lm = new LanguageModelIRST(dub);
#endif
break;
case Joint:
#ifdef LM_SRI
lm = new LanguageModelJoint(new LanguageModelSRI());
#endif
break;
case Local:
#ifdef LM_SRI
lm = new LanguageModelLocal();
#endif
break;
case ParallelBackoff:
#ifdef LM_SRI
lm = NewParallelBackoff();
#endif
break;
case LDHTLM:
#ifdef LM_LDHT
return ConstructLDHTLM(languageModelFile,
scoreIndexManager,
factorTypes[0]);
#endif
break;
default:
break;
}
if (lm == NULL) {
UserMessage::Add("Language model type unknown. Probably not compiled into library");
return NULL;
} else {
switch (lm->GetLMType()) {
case SingleFactor:
if (! dynamic_cast<LanguageModelSingleFactor*>(lm)->Load(languageModelFile, factorTypes[0], nGramOrder)) {
cerr << "single factor model failed" << endl;
delete lm;
lm = NULL;
}
break;
case MultiFactor:
if (! dynamic_cast<LanguageModelMultiFactor*>(lm)->Load(languageModelFile, factorTypes, nGramOrder)) {
cerr << "multi factor model failed" << endl;
delete lm;
lm = NULL;
}
break;
}
}
return new LMRefCount(lm);
}
}
}
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