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/***********************************************************************
Moses - factored phrase-based language decoder
Copyright (C) 2010 Hieu Hoang
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
#include "StackVec.h"
#include "TargetPhrase.h"
#include "TargetPhraseCollection.h"
#include "Range.h"
#include <vector>
#include <boost/shared_ptr.hpp>
#include "ChartTranslationOption.h"
namespace Moses
{
class ChartTranslationOption;
class InputPath;
class InputType;
/** Similar to a DottedRule, but contains a direct reference to a list
* of translations and provdes an estimate of the best score. For a specific range in the input sentence
*/
class ChartTranslationOptions
{
friend std::ostream& operator<<(std::ostream&, const ChartTranslationOptions&);
public:
typedef std::vector<boost::shared_ptr<ChartTranslationOption> > CollType;
/** Constructor
\param targetPhraseColl @todo dunno
\param stackVec @todo dunno
\param range the range in the source sentence this translation option covers
\param score @todo dunno
*/
ChartTranslationOptions(const TargetPhraseCollection &targetPhraseColl,
const StackVec &stackVec,
const Range &range,
float score);
~ChartTranslationOptions();
static float CalcEstimateOfBestScore(const TargetPhraseCollection &,
const StackVec &);
size_t GetSize() const {
return m_collection.size();
}
//! @todo dunno
const StackVec &GetStackVec() const {
return m_stackVec;
}
//! @todo isn't the translation suppose to just contain 1 target phrase, not a whole collection of them?
const CollType &GetTargetPhrases() const {
return m_collection;
}
//! the range in the source sentence this translation option covers
const Range &GetSourceWordsRange() const {
return *m_wordsRange;
}
/** return an estimate of the best score possible with this translation option.
* the estimate is the sum of the top target phrase's estimated score plus the
* scores of the best child hypotheses.
*/
inline float GetEstimateOfBestScore() const {
return m_estimateOfBestScore;
}
void EvaluateWithSourceContext(const InputType &input, const InputPath &inputPath);
void SetInputPath(const InputPath *inputPath);
void CreateSourceRuleFromInputPath();
private:
StackVec m_stackVec; //! vector of hypothesis list!
CollType m_collection;
const Range *m_wordsRange;
float m_estimateOfBestScore;
};
}
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