mosesdecoder/moses-cmd/src/LatticeMBR.cpp File Reference

#include "LatticeMBR.h"
#include "StaticData.h"
#include <algorithm>
#include <set>

Go to the source code of this file.

Functions
void	GetOutputWords (const TrellisPath &path, vector< Word > &translation)
void	extract_ngrams (const vector< Word > &sentence, map< Phrase, int > &allngrams)
void	pruneLatticeFB (Lattice &connectedHyp, map< const Hypothesis *, set< const Hypothesis * > > &outgoingHyps, map< const Hypothesis *, vector< Edge > > &incomingEdges, const vector< float > &estimatedScores, const Hypothesis *bestHypo, size_t edgeDensity, float scale)
void	calcNgramExpectations (Lattice &connectedHyp, map< const Hypothesis *, vector< Edge > > &incomingEdges, map< Phrase, float > &finalNgramScores, bool posteriors)
ostream &	operator<< (ostream &out, const Edge &edge)
bool	ascendingCoverageCmp (const Hypothesis *a, const Hypothesis *b)
void	getLatticeMBRNBest (Manager &manager, TrellisPathList &nBestList, vector< LatticeMBRSolution > &solutions, size_t n)
vector< Word >	doLatticeMBR (Manager &manager, TrellisPathList &nBestList)
const TrellisPath	doConsensusDecoding (Manager &manager, TrellisPathList &nBestList)
Variables
size_t	bleu_order = 4
float	UNKNGRAMLOGPROB = -20

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Function Documentation

bool ascendingCoverageCmp	(	const Hypothesis *	a,
		const Hypothesis *	b
	)

Definition at line 494 of file LatticeMBR.cpp.

References Moses::WordsBitmap::GetNumWordsCovered(), and Moses::Hypothesis::GetWordsBitmap().

Referenced by calcNgramExpectations().

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void calcNgramExpectations	(	Lattice &	connectedHyp,
		map< const Hypothesis *, vector< Edge > > &	incomingEdges,
		map< Phrase, float > &	finalNgramScores,
		bool	posteriors
	)

Definition at line 275 of file LatticeMBR.cpp.

References NgramScores::addScore(), Moses::Phrase::AddWord(), Moses::ARRAY_SIZE_INCR, ascendingCoverageCmp(), bleu_order, end, Moses::Hypothesis::GetId(), Edge::GetNgrams(), Moses::WordsBitmap::GetNumWordsCovered(), Edge::GetPhraseSuffix(), Edge::GetScore(), Moses::Phrase::GetSize(), Edge::GetTailNode(), Moses::Phrase::GetWord(), Edge::GetWords(), Moses::Hypothesis::GetWordsBitmap(), Edge::GetWordsSize(), IFVERBOSE, index, Moses::WordsBitmap::IsComplete(), Moses::log_sum(), NgramScores::nodeBegin(), NgramScores::nodeEnd(), Edge::storeNgramHistory(), and VERBOSE.

Referenced by doConsensusDecoding(), and getLatticeMBRNBest().

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const TrellisPath doConsensusDecoding	(	Manager &	manager,
		TrellisPathList &	nBestList
	)

Definition at line 554 of file LatticeMBR.cpp.

References Moses::TrellisPathList::begin(), BLEU_ORDER, calcNgramExpectations(), Moses::TrellisPathList::end(), extract_ngrams(), Moses::Manager::GetBestHypothesis(), Moses::Manager::GetForwardBackwardSearchGraph(), Moses::StaticData::GetLatticeMBRPruningFactor(), Moses::StaticData::GetMBRScale(), GetOutputWords(), pruneLatticeFB(), SMOOTH, and VERBOSE.

Referenced by TranslationTask::Run().

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vector<Word> doLatticeMBR	(	Manager &	manager,
		TrellisPathList &	nBestList
	)

Definition at line 546 of file LatticeMBR.cpp.

References getLatticeMBRNBest().

Referenced by main(), and TranslationTask::Run().

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void extract_ngrams	(	const vector< Word > &	sentence,
		map< Phrase, int > &	allngrams
	)

Definition at line 35 of file LatticeMBR.cpp.

References Moses::Phrase::AddWord(), and bleu_order.

Referenced by doConsensusDecoding(), and doMBR().

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void getLatticeMBRNBest	(	Manager &	manager,
		TrellisPathList &	nBestList,
		vector< LatticeMBRSolution > &	solutions,
		size_t	n
	)

Definition at line 499 of file LatticeMBR.cpp.

References Moses::TrellisPathList::begin(), bleu_order, calcNgramExpectations(), Moses::TrellisPathList::end(), Moses::Manager::GetBestHypothesis(), Moses::Manager::GetForwardBackwardSearchGraph(), Moses::StaticData::GetLatticeMBRMapWeight(), Moses::StaticData::GetLatticeMBRPRatio(), Moses::StaticData::GetLatticeMBRPrecision(), Moses::StaticData::GetLatticeMBRPruningFactor(), Moses::StaticData::GetLatticeMBRThetas(), Moses::StaticData::GetMBRScale(), IFVERBOSE, pruneLatticeFB(), and VERBOSE.

Referenced by doLatticeMBR(), and TranslationTask::Run().

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void GetOutputWords	(	const TrellisPath &	path,
		vector< Word > &	translation
	)

Definition at line 19 of file LatticeMBR.cpp.

References Moses::Hypothesis::GetCurrTargetPhrase(), Moses::TrellisPath::GetEdges(), Moses::Phrase::GetSize(), and Moses::Phrase::GetWord().

Referenced by doConsensusDecoding().

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ostream& operator<<	(	ostream &	out,
		const Edge &	edge
	)

Definition at line 488 of file LatticeMBR.cpp.

References Moses::Hypothesis::GetId().

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void pruneLatticeFB	(	Lattice &	connectedHyp,
		map< const Hypothesis *, set< const Hypothesis * > > &	outgoingHyps,
		map< const Hypothesis *, vector< Edge > > &	incomingEdges,
		const vector< float > &	estimatedScores,
		const Hypothesis *	bestHypo,
		size_t	edgeDensity,
		float	scale
	)

Definition at line 130 of file LatticeMBR.cpp.

References Moses::Hypothesis::GetArcList(), Moses::Hypothesis::GetCurrTargetPhrase(), Moses::Hypothesis::GetId(), Moses::Hypothesis::GetPrevHypo(), Moses::Hypothesis::GetScore(), Moses::Hypothesis::GetSize(), IFVERBOSE, NULL, and VERBOSE.

Referenced by doConsensusDecoding(), and getLatticeMBRNBest().

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Variable Documentation

size_t bleu_order = 4

Definition at line 17 of file LatticeMBR.cpp.

Referenced by calcNgramExpectations(), extract_ngrams(), and getLatticeMBRNBest().

float UNKNGRAMLOGPROB = -20

Definition at line 18 of file LatticeMBR.cpp.