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81 lines
2.3 KiB
C++
81 lines
2.3 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 <set>
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#include "StaticData.h"
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#include "LMList.h"
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#include "Phrase.h"
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#include "ScoreComponentCollection.h"
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using namespace std;
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namespace Moses
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{
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LMList::~LMList()
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{
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}
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void LMList::CleanUp()
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{
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RemoveAllInColl(m_coll);
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}
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void LMList::CalcScore(const Phrase &phrase, float &retFullScore, float &retNGramScore, float &retOOVScore, ScoreComponentCollection* breakdown) const
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{
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const_iterator lmIter;
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for (lmIter = begin(); lmIter != end(); ++lmIter) {
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const LanguageModel &lm = **lmIter;
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const float weightLM = lm.GetWeight();
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const float oovWeightLM = lm.GetOOVWeight();
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float fullScore, nGramScore;
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size_t oovCount;
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// do not process, if factors not defined yet (happens in partial translation options)
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if (!lm.Useable(phrase))
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continue;
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lm.CalcScore(phrase, fullScore, nGramScore, oovCount);
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if (StaticData::Instance().GetLMEnableOOVFeature()) {
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vector<float> scores(2);
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scores[0] = nGramScore;
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scores[1] = oovCount;
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breakdown->Assign(&lm, scores);
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retOOVScore += oovCount * oovWeightLM;
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} else {
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breakdown->Assign(&lm, nGramScore); // I'm not sure why += doesn't work here- it should be 0.0 right?
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}
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retFullScore += fullScore * weightLM;
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retNGramScore += nGramScore * weightLM;
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}
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}
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void LMList::Add(LanguageModel *lm)
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{
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m_coll.push_back(lm);
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}
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}
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