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92 lines
3.0 KiB
C++
92 lines
3.0 KiB
C++
/***********************************************************************
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Moses - factored phrase-based language decoder
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Copyright (C) 2010 Hieu Hoang
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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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#include "StackVec.h"
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#include "TargetPhrase.h"
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#include "TargetPhraseCollection.h"
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#include "WordsRange.h"
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#include "util/check.hh"
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#include <vector>
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namespace Moses
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{
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/** Similar to a DottedRule, but contains a direct reference to a list
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* of translations and provdes an estimate of the best score. For a specific range in the input sentence
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*/
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class ChartTranslationOptions
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{
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public:
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/** Constructor
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\param targetPhraseColl @todo dunno
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\param stackVec @todo dunno
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\param wordsRange the range in the source sentence this translation option covers
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\param score @todo dunno
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*/
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ChartTranslationOptions(const TargetPhraseCollection &targetPhraseColl,
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const StackVec &stackVec,
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const WordsRange &wordsRange,
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float score)
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: m_stackVec(stackVec)
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, m_targetPhraseCollection(&targetPhraseColl)
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, m_wordsRange(&wordsRange)
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, m_estimateOfBestScore(score) {
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}
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~ChartTranslationOptions() {}
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static float CalcEstimateOfBestScore(const TargetPhraseCollection &,
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const StackVec &);
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//! @todo dunno
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const StackVec &GetStackVec() const {
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return m_stackVec;
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}
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//! @todo isn't the translation suppose to just contain 1 target phrase, not a whole collection of them?
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const TargetPhraseCollection &GetTargetPhraseCollection() const {
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return *m_targetPhraseCollection;
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}
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//! the range in the source sentence this translation option covers
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const WordsRange &GetSourceWordsRange() const {
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return *m_wordsRange;
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}
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/** return an estimate of the best score possible with this translation option.
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* the estimate is the sum of the top target phrase's estimated score plus the
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* scores of the best child hypotheses.
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*/
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inline float GetEstimateOfBestScore() const {
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return m_estimateOfBestScore;
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}
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private:
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StackVec m_stackVec; //! vector of hypothesis list!
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const TargetPhraseCollection *m_targetPhraseCollection;
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const WordsRange *m_wordsRange;
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float m_estimateOfBestScore;
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};
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}
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