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// $Id$
// vim:tabstop=2
/***********************************************************************
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 "ScoreComponentCollection.h"
#include "Phrase.h"
#include <boost/shared_ptr.hpp>
namespace Moses
{
class ChartHypothesis;
class ChartTrellisDetour;
class ChartTrellisDetourQueue;
class ChartTrellisNode;
/** 1 path through the output hypergraph
* The class hold the final node in the path used for constructing n-best list in chart decoding.
* Each node hold it's own children.
* Also contains the total score and score breakdown for this path.
*/
class ChartTrellisPath
{
public:
ChartTrellisPath(const ChartHypothesis &hypo);
ChartTrellisPath(const ChartTrellisDetour &detour);
~ChartTrellisPath();
const ChartTrellisNode &GetFinalNode() const { return *m_finalNode; }
const ChartTrellisNode *GetDeviationPoint() const { return m_deviationPoint; }
//! get score for this path throught trellis
float GetTotalScore() const { return m_totalScore; }
Phrase GetOutputPhrase() const;
/** returns detailed component scores */
const ScoreComponentCollection &GetScoreBreakdown() const {
return m_scoreBreakdown;
}
private:
ChartTrellisPath(const ChartTrellisPath &); // Not implemented
ChartTrellisPath &operator=(const ChartTrellisPath &); // Not implemented
ChartTrellisNode *m_finalNode;
ChartTrellisNode *m_deviationPoint;
ScoreComponentCollection m_scoreBreakdown;
float m_totalScore;
};
} // namespace Moses
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