mosesdecoder/moses/TranslationModel/CYKPlusParser/ChartRuleLookupManagerOnDisk.h
Rico Sennrich 45630a5851 various optimizations to make CYK+ parser several times faster and eat less memory.
speed-up of decoding depends on how much time is spent in parser:
10-50% speed-up for string-to-tree systems observed (more on long sentences and with high max-chart-span).

if you only use hiero or string-to-tree models (but none with source syntax), use compile-option --unlabelled-source for (small) efficiency gains.
2014-03-21 11:12:24 +00:00

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/***********************************************************************
Moses - factored phrase-based language decoder
Copyright (C) 2011 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
#ifndef moses_ChartRuleLookupManagerOnDisk_h
#define moses_ChartRuleLookupManagerOnDisk_h
#include "OnDiskPt/OnDiskWrapper.h"
#include "ChartRuleLookupManagerCYKPlus.h"
#include "DotChartOnDisk.h"
#include "moses/TranslationModel/RuleTable/PhraseDictionaryOnDisk.h"
#include "moses/ChartParserCallback.h"
#include "moses/InputType.h"
namespace Moses
{
//! Implementation of ChartRuleLookupManager for on-disk rule tables.
class ChartRuleLookupManagerOnDisk : public ChartRuleLookupManagerCYKPlus
{
public:
ChartRuleLookupManagerOnDisk(const ChartParser &parser,
const ChartCellCollectionBase &cellColl,
const PhraseDictionaryOnDisk &dictionary,
OnDiskPt::OnDiskWrapper &dbWrapper,
const std::vector<FactorType> &inputFactorsVec,
const std::vector<FactorType> &outputFactorsVec,
const std::string &filePath);
~ChartRuleLookupManagerOnDisk();
virtual void GetChartRuleCollection(const WordsRange &range,
size_t last,
ChartParserCallback &outColl);
private:
const PhraseDictionaryOnDisk &m_dictionary;
OnDiskPt::OnDiskWrapper &m_dbWrapper;
const std::vector<FactorType> &m_inputFactorsVec;
const std::vector<FactorType> &m_outputFactorsVec;
const std::string &m_filePath;
std::vector<DottedRuleStackOnDisk*> m_expandableDottedRuleListVec;
std::map<UINT64, const TargetPhraseCollection*> m_cache;
std::list<const OnDiskPt::PhraseNode*> m_sourcePhraseNode;
};
} // namespace Moses
#endif