Moses::TranslationOption Class Reference

#include <TranslationOption.h>

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List of all members.

Classes

struct  Better

Public Member Functions

 TranslationOption ()
 TranslationOption (const Range &range, const TargetPhrase &targetPhrase)
bool IsCompatible (const Phrase &phrase, const std::vector< FactorType > &featuresToCheck) const
const TargetPhrase & GetTargetPhrase () const
const Range & GetSourceWordsRange () const
const InputPath & GetInputPath () const
void SetInputPath (const InputPath &inputPath)
bool Overlap (const Hypothesis &hypothesis) const
size_t GetStartPos () const
size_t GetEndPos () const
size_t GetSize () const
float GetFutureScore () const
bool IsDeletionOption () const
const ScoreComponentCollection & GetScoreBreakdown () const
ScoreComponentCollection & GetScoreBreakdown ()
void EvaluateWithSourceContext (const InputType &input)
void UpdateScore (ScoreComponentCollection *futureScoreBreakdown=NULL)
const Scores * GetLexReorderingScores (const LexicalReordering *scoreProducer) const
void CacheLexReorderingScores (const LexicalReordering &scoreProducer, const Scores &score)
 TO_STRING ()
bool operator== (const TranslationOption &rhs) const

Protected Attributes

TargetPhrase m_targetPhrase
const InputPath * m_inputPath
const Range m_sourceWordsRange
float m_futureScore

Friends

std::ostream & operator<< (std::ostream &out, const TranslationOption &possibleTranslation)

Detailed Description

Available phrase translation for a particular sentence pair. In a multi-factor model, this is expanded from the entries in the translation tables and generation tables (and pruned to the maximum number allowed). By pre-computing the allowable phrase translations, efficient beam search in Manager is possible when expanding instances of the class Hypothesis - the states in the search.

A translation option contains source and target phrase, aggregate and details scores (in m_scoreBreakdown), including an estimate how expensive this option will be in search (used to build the future cost matrix.)

m_targetPhrase points to a phrase-table entry. The source word range is zero-indexed, so it can't refer to an empty range. The target phrase may be empty.

Definition at line 62 of file TranslationOption.h.

Constructor & Destructor Documentation

Moses::TranslationOption::TranslationOption (  )  [explicit]

Definition at line 35 of file TranslationOption.cpp.

Moses::TranslationOption::TranslationOption ( const Range &  range,
const TargetPhrase &  targetPhrase 
)

constructor. Used by initial translation step

Definition at line 42 of file TranslationOption.cpp.

Member Function Documentation

void Moses::TranslationOption::CacheLexReorderingScores ( const LexicalReordering &  scoreProducer,
const Scores &  score 
)

Definition at line 71 of file TranslationOption.cpp.

References m_targetPhrase, and Moses::TargetPhrase::SetExtraScores().

Referenced by Moses::LexicalReordering::SetCache().

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void Moses::TranslationOption::EvaluateWithSourceContext ( const InputType &  input  ) 

Definition at line 79 of file TranslationOption.cpp.

References Moses::TargetPhrase::EvaluateWithSourceContext(), GetInputPath(), and m_targetPhrase.

Referenced by Moses::TranslationOptionCollectionLattice::CreateTranslationOptions().

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size_t Moses::TranslationOption::GetEndPos (  )  const [inline]

return end index of source phrase

Definition at line 124 of file TranslationOption.h.

References Moses::Range::GetEndPos(), and m_sourceWordsRange.

Referenced by Moses::VW::EvaluateWhenApplied(), Moses::SearchNormal::ExpandHypothesis(), Moses::hash_value(), and Moses::VWState::VWState().

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float Moses::TranslationOption::GetFutureScore (  )  const [inline]

return estimate of total cost of this option

Definition at line 134 of file TranslationOption.h.

References m_futureScore.

Referenced by Moses::PartialTranslOptColl::AddNoPrune(), Moses::BackwardsEdge::BackwardsEdge(), Moses::TranslationOptionCollection::CalcEstimatedScore(), Moses::ComparePartialTranslationOption(), Moses::SearchNormal::ExpandHypothesis(), Moses::TranslationOption::Better::operator()(), Moses::operator<<(), and Moses::TranslationOptionList::PruneByThreshold().

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const InputPath & Moses::TranslationOption::GetInputPath (  )  const

returns source phrase

Definition at line 85 of file TranslationOption.cpp.

References m_inputPath, NULL, and UTIL_THROW_IF2.

Referenced by Moses::SentenceStats::AddDeletedWords(), Moses::SparseReordering::CopyScores(), Moses::PhraseBoundaryFeature::EvaluateWhenApplied(), EvaluateWithSourceContext(), Moses::Manager::GetPlaceholders(), Moses::Hypothesis::GetPlaceholders(), Moses::Manager::OutputInput(), Moses::Hypothesis::OutputInput(), Moses::Hypothesis::PrintHypothesis(), Moses::DecodeStepTranslation::Process(), Moses::DecodeStepGeneration::Process(), Moses::DecodeStepTranslation::ProcessLEGACY(), and Moses::LexicalReordering::SetCache().

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const Scores * Moses::TranslationOption::GetLexReorderingScores ( const LexicalReordering *  scoreProducer  )  const

returns cached scores

Definition at line 115 of file TranslationOption.cpp.

References Moses::TargetPhrase::GetExtraScores(), and m_targetPhrase.

Referenced by Moses::LRState::ComparePrevScores(), Moses::LRState::CopyScores(), and Moses::LexicalReordering::SetCache().

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ScoreComponentCollection& Moses::TranslationOption::GetScoreBreakdown (  )  [inline]

Definition at line 148 of file TranslationOption.h.

References Moses::TargetPhrase::GetScoreBreakdown(), and m_targetPhrase.

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const ScoreComponentCollection& Moses::TranslationOption::GetScoreBreakdown (  )  const [inline]

returns detailed component scores

Definition at line 144 of file TranslationOption.h.

References Moses::TargetPhrase::GetScoreBreakdown(), and m_targetPhrase.

Referenced by Moses::VW::EvaluateTranslationOptionListWithSourceContext(), Moses::ExampleTranslationOptionListFeature::EvaluateTranslationOptionListWithSourceContext(), Moses::Hypothesis::Hypothesis(), Moses::operator<<(), and Moses::TranslationOptionCollection::SetInputScore().

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size_t Moses::TranslationOption::GetSize (  )  const [inline]

return length of source phrase

Definition at line 129 of file TranslationOption.h.

References Moses::Range::GetEndPos(), Moses::Range::GetStartPos(), and m_sourceWordsRange.

Referenced by Moses::SearchNormal::ExpandHypothesis().

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const Range& Moses::TranslationOption::GetSourceWordsRange (  )  const [inline]

returns source word range

Definition at line 106 of file TranslationOption.h.

References m_sourceWordsRange.

Referenced by Moses::TranslationOptionCollection::Add(), Moses::BackwardsEdge::BackwardsEdge(), Moses::SparseReordering::CopyScores(), Moses::VW::EvaluateTranslationOptionListWithSourceContext(), Moses::PhraseBasedReorderingState::Expand(), Moses::HReorderingForwardState::Expand(), Moses::HReorderingBackwardState::Expand(), Moses::SearchNormal::ExpandAllHypotheses(), Moses::BackwardsEdge::Initialize(), Moses::operator<<(), Overlap(), Moses::DecodeStepTranslation::Process(), Moses::DecodeStepGeneration::Process(), and Moses::DecodeStepTranslation::ProcessLEGACY().

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size_t Moses::TranslationOption::GetStartPos (  )  const [inline]

return start index of source phrase

Definition at line 119 of file TranslationOption.h.

References Moses::Range::GetStartPos(), and m_sourceWordsRange.

Referenced by Moses::VW::EvaluateWhenApplied(), Moses::SearchNormal::ExpandHypothesis(), Moses::hash_value(), and Moses::VWState::VWState().

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const TargetPhrase& Moses::TranslationOption::GetTargetPhrase (  )  const [inline]

returns target phrase

Definition at line 101 of file TranslationOption.h.

References m_targetPhrase.

Referenced by Moses::SparseReordering::CopyScores(), Moses::VW::EvaluateTranslationOptionListWithSourceContext(), Moses::VW::EvaluateWhenApplied(), Moses::Hypothesis::GetCurrTargetPhrase(), Moses::Manager::GetPlaceholders(), Moses::Hypothesis::GetPlaceholders(), Moses::hash_value(), Moses::operator<<(), Moses::DecodeStepTranslation::Process(), Moses::DecodeStepGeneration::Process(), Moses::DecodeStepTranslation::ProcessLEGACY(), Moses::LexicalReordering::SetCache(), and Moses::TranslationOptionCollectionText::ViolatesXmlOptionsConstraint().

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bool Moses::TranslationOption::IsCompatible ( const Phrase &  phrase,
const std::vector< FactorType > &  featuresToCheck 
) const

returns true if all feature types in featuresToCheck are compatible between the two phrases

Definition at line 51 of file TranslationOption.cpp.

References Moses::Phrase::IsCompatible(), and m_targetPhrase.

Referenced by Moses::DecodeStepTranslation::Process(), Moses::DecodeStepGeneration::Process(), and Moses::DecodeStepTranslation::ProcessLEGACY().

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bool Moses::TranslationOption::IsDeletionOption (  )  const [inline]

return true if the source phrase translates into nothing

Definition at line 139 of file TranslationOption.h.

References Moses::Phrase::GetSize(), and m_targetPhrase.

Referenced by Moses::Hypothesis::Hypothesis().

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bool Moses::TranslationOption::operator== ( const TranslationOption &  rhs  )  const [inline]

Definition at line 171 of file TranslationOption.h.

References m_sourceWordsRange, and m_targetPhrase.

bool Moses::TranslationOption::Overlap ( const Hypothesis &  hypothesis  )  const

whether source span overlaps with those of a hypothesis

Definition at line 63 of file TranslationOption.cpp.

References GetSourceWordsRange(), Moses::Hypothesis::GetWordsBitmap(), and Moses::Bitmap::Overlap().

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void Moses::TranslationOption::SetInputPath ( const InputPath &  inputPath  ) 

Definition at line 92 of file TranslationOption.cpp.

References m_inputPath, and UTIL_THROW_IF2.

Referenced by Moses::TranslationOptionCollectionLattice::CreateTranslationOptions(), Moses::TranslationOptionCollectionText::CreateXmlOptionsForRange(), Moses::DecodeStepTranslation::Process(), Moses::DecodeStepGeneration::Process(), Moses::DecodeStepTranslation::ProcessInitialTranslation(), Moses::DecodeStepTranslation::ProcessInitialTransLEGACY(), Moses::DecodeStepTranslation::ProcessLEGACY(), Moses::TranslationOptionCollection::ProcessOneUnknownWord(), and Moses::Search::Search().

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Moses::TranslationOption::TO_STRING (  ) 

void Moses::TranslationOption::UpdateScore ( ScoreComponentCollection *  futureScoreBreakdown = NULL  )  [inline]

Definition at line 154 of file TranslationOption.h.

References m_targetPhrase, and Moses::TargetPhrase::UpdateScore().

Referenced by Moses::VW::EvaluateTranslationOptionListWithSourceContext(), and Moses::ExampleTranslationOptionListFeature::EvaluateTranslationOptionListWithSourceContext().

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Friends And Related Function Documentation

std::ostream& operator<< ( std::ostream &  out,
const TranslationOption &  possibleTranslation 
) [friend]

Member Data Documentation

float Moses::TranslationOption::m_futureScore [protected]

Definition at line 71 of file TranslationOption.h.

Referenced by GetFutureScore().

const InputPath* Moses::TranslationOption::m_inputPath [protected]

Definition at line 69 of file TranslationOption.h.

Referenced by GetInputPath(), and SetInputPath().

const Range Moses::TranslationOption::m_sourceWordsRange [protected]

Definition at line 70 of file TranslationOption.h.

Referenced by GetEndPos(), GetSize(), GetSourceWordsRange(), GetStartPos(), and operator==().

TargetPhrase Moses::TranslationOption::m_targetPhrase [protected]

Definition at line 68 of file TranslationOption.h.

Referenced by CacheLexReorderingScores(), EvaluateWithSourceContext(), GetLexReorderingScores(), GetScoreBreakdown(), GetTargetPhrase(), IsCompatible(), IsDeletionOption(), operator==(), and UpdateScore().

The documentation for this class was generated from the following files:
Generated on Thu Jul 6 00:33:56 2017 for Moses by  doxygen 1.5.9