mirror of
https://github.com/moses-smt/mosesdecoder.git
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45630a5851
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.
90 lines
2.8 KiB
C++
90 lines
2.8 KiB
C++
/***********************************************************************
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Moses - factored phrase-based language decoder
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Copyright (C) 2011 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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#pragma once
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#ifndef moses_ChartRuleLookupManagerMemory_h
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#define moses_ChartRuleLookupManagerMemory_h
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#include <vector>
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#include "ChartRuleLookupManagerCYKPlus.h"
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#include "CompletedRuleCollection.h"
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#include "moses/NonTerminal.h"
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#include "moses/TranslationModel/PhraseDictionaryMemory.h"
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#include "moses/TranslationModel/PhraseDictionaryNodeMemory.h"
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#include "moses/StackVec.h"
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namespace Moses
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{
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class ChartParserCallback;
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class WordsRange;
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//! Implementation of ChartRuleLookupManager for in-memory rule tables.
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class ChartRuleLookupManagerMemory : public ChartRuleLookupManagerCYKPlus
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{
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public:
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ChartRuleLookupManagerMemory(const ChartParser &parser,
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const ChartCellCollectionBase &cellColl,
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const PhraseDictionaryMemory &ruleTable);
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~ChartRuleLookupManagerMemory() {};
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virtual void GetChartRuleCollection(
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const WordsRange &range,
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size_t lastPos, // last position to consider if using lookahead
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ChartParserCallback &outColl);
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private:
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void GetTerminalExtension(
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const PhraseDictionaryNodeMemory *node,
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size_t pos);
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void GetNonTerminalExtension(
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const PhraseDictionaryNodeMemory *node,
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size_t startPos,
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size_t endPos);
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void AddAndExtend(
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const PhraseDictionaryNodeMemory *node,
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size_t endPos,
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const ChartCellLabel *cellLabel);
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const PhraseDictionaryMemory &m_ruleTable;
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// permissible soft nonterminal matches (target side)
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bool m_isSoftMatching;
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const std::vector<std::vector<Word> >& m_softMatchingMap;
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// temporary storage of completed rules (one collection per end position; all rules collected consecutively start from the same position)
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std::vector<CompletedRuleCollection> m_completedRules;
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size_t m_lastPos;
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size_t m_unaryPos;
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StackVec m_stackVec;
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ChartParserCallback* m_outColl;
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};
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} // namespace Moses
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#endif
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