Structure for sentence-specific grammar Rules will be queried by cyk per position and number of elements in the right-hand-side (source) of the rule Therefore indices are stored in this fashion so queries can be done directly. Note: a more efficient implementation could be to store these rule indices in a structure much closer even to the cyk grid. For instance, if an instanced pattern has never been seen below span 5, there is no need for the cyk to query and reject it. More...

#include <data.ssgrammar.hpp>

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Public Member Functions
	SentenceSpecificGrammarData ()

void	reset ()

const std::string	getRule (std::size_t idx)
	Returns rule corresponding to index idx. More...

const std::string	getLHS (std::size_t idx)
	Returns Left-hand-side of a rule corresponding to index idx. More...

const std::string	getRHSSource (std::size_t idx)
	Returns Right-hand-side (source) of the rule with index=idx. More...

const std::string	getRHSSource (std::size_t idx, uint rulepos)
	Returns element at position rulepos of right-hand-side (source) More...

const std::vector< std::string >	getRHSSplitSource (std::size_t idx)
	Returns vector of elements of the RHS source. More...

const uint	getRHSSourceSize (std::size_t idx)
	Returns size of RHS source of a rule. More...

const std::string	getRHSTranslation (std::size_t idx)
	Returns RHS translation of a rule with index idx. More...

const std::vector< std::string >	getRHSSplitTranslation (std::size_t idx)
	Returns translation as a vector of elements. More...

const uint	getRHSTranslationSize (std::size_t idx)
	Returns size of RHS (translation) of a rule. More...

const float	getWeight (std::size_t idx)
	Returns the weight of a rule. This weight is the dot product of all the features with its scales. More...

void	getLinks (std::size_t idx, std::vector< unsigned > &links) const

const bool	isPhrase (std::size_t idx)

const std::size_t	getIdx (std::size_t idx)
	Returns the true idx of a rule (i.e. line in the grammar file). If it is sentence specific, then return the idx itself. More...

const bool	isAcceptedByVocabulary (const std::size_t idx, const unordered_set< std::string > &vcb)

void	getMappings (std::size_t idx, unordered_map< uint, uint > *mappings)
	Returns the non-terminal mappings for a rule. For more details see getRuleMappings function. More...

Public Attributes
const GrammarData *	grammar
	Pointer to the original grammar data (no ownership) More...

ssgrammar_rulesmap_t	rulesWithRhsSpan1

ssgrammar_rulesmap_t	rulesWithRhsSpan2OrMore
	cells containing potentially applicable rules with two or more elements More...

unordered_map< std::size_t, std::string >	extrarules

Detailed Description

Structure for sentence-specific grammar Rules will be queried by cyk per position and number of elements in the right-hand-side (source) of the rule Therefore indices are stored in this fashion so queries can be done directly. Note: a more efficient implementation could be to store these rule indices in a structure much closer even to the cyk grid. For instance, if an instanced pattern has never been seen below span 5, there is no need for the cyk to query and reject it.

Definition at line 38 of file data.ssgrammar.hpp.

Constructor & Destructor Documentation

ucam::hifst::SentenceSpecificGrammarData::SentenceSpecificGrammarData ( )

inline

Definition at line 40 of file data.ssgrammar.hpp.

Member Function Documentation

const std::size_t ucam::hifst::SentenceSpecificGrammarData::getIdx ( std::size_t idx )

inline

Returns the true idx of a rule (i.e. line in the grammar file). If it is sentence specific, then return the idx itself.

Definition at line 200 of file data.ssgrammar.hpp.

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const std::string ucam::hifst::SentenceSpecificGrammarData::getLHS ( std::size_t idx )

inline

Returns Left-hand-side of a rule corresponding to index idx.

Definition at line 74 of file data.ssgrammar.hpp.

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void ucam::hifst::SentenceSpecificGrammarData::getLinks	(	std::size_t	idx,
		std::vector< unsigned > &	links
	)		const

inline

Definition at line 167 of file data.ssgrammar.hpp.

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void ucam::hifst::SentenceSpecificGrammarData::getMappings	(	std::size_t	idx,
		unordered_map< uint, uint > *	mappings
	)

inline

Returns the non-terminal mappings for a rule. For more details see getRuleMappings function.

Parameters

idx	rule (sorted) identifier.
mappings	Source to target non-terminal mapping information

Definition at line 220 of file data.ssgrammar.hpp.

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const std::string ucam::hifst::SentenceSpecificGrammarData::getRHSSource ( std::size_t idx )

inline

Returns Right-hand-side (source) of the rule with index=idx.

Definition at line 82 of file data.ssgrammar.hpp.

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const std::string ucam::hifst::SentenceSpecificGrammarData::getRHSSource	(	std::size_t	idx,
		uint	rulepos
	)

inline

Returns element at position rulepos of right-hand-side (source)

Definition at line 91 of file data.ssgrammar.hpp.

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const uint ucam::hifst::SentenceSpecificGrammarData::getRHSSourceSize ( std::size_t idx )

inline

Returns size of RHS source of a rule.

Definition at line 116 of file data.ssgrammar.hpp.

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const std::vector<std::string> ucam::hifst::SentenceSpecificGrammarData::getRHSSplitSource ( std::size_t idx )

inline

Returns vector of elements of the RHS source.

Definition at line 106 of file data.ssgrammar.hpp.

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const std::vector<std::string> ucam::hifst::SentenceSpecificGrammarData::getRHSSplitTranslation ( std::size_t idx )

inline

Returns translation as a vector of elements.

Definition at line 135 of file data.ssgrammar.hpp.

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const std::string ucam::hifst::SentenceSpecificGrammarData::getRHSTranslation ( std::size_t idx )

inline

Returns RHS translation of a rule with index idx.

Definition at line 125 of file data.ssgrammar.hpp.

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const uint ucam::hifst::SentenceSpecificGrammarData::getRHSTranslationSize ( std::size_t idx )

inline

Returns size of RHS (translation) of a rule.

Definition at line 146 of file data.ssgrammar.hpp.

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const std::string ucam::hifst::SentenceSpecificGrammarData::getRule ( std::size_t idx )

inline

Returns rule corresponding to index idx.

Definition at line 66 of file data.ssgrammar.hpp.

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const float ucam::hifst::SentenceSpecificGrammarData::getWeight ( std::size_t idx )

inline

Returns the weight of a rule. This weight is the dot product of all the features with its scales.

Definition at line 156 of file data.ssgrammar.hpp.

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const bool ucam::hifst::SentenceSpecificGrammarData::isAcceptedByVocabulary	(	const std::size_t	idx,
		const unordered_set< std::string > &	vcb
	)

inline

Determines whether a rule is allowed within the vocabulary. If the rule is sentence-specific (i.e. created due to oov or feedback,etc) this method will always return true.

Definition at line 208 of file data.ssgrammar.hpp.

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const bool ucam::hifst::SentenceSpecificGrammarData::isPhrase ( std::size_t idx )

inline

Definition at line 189 of file data.ssgrammar.hpp.

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void ucam::hifst::SentenceSpecificGrammarData::reset ( )

inline

Definition at line 58 of file data.ssgrammar.hpp.

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Member Data Documentation

unordered_map<std::size_t, std::string> ucam::hifst::SentenceSpecificGrammarData::extrarules

Extra rules, e.g. due to oovs, feedback, etc. Indexed by a rule id that must be bigger than the number of rules of the whole grammar Note that this hash is not expected to contain many rules. If so, access speed will degrade.

Definition at line 55 of file data.ssgrammar.hpp.

const GrammarData* ucam::hifst::SentenceSpecificGrammarData::grammar

Pointer to the original grammar data (no ownership)

Definition at line 45 of file data.ssgrammar.hpp.

ssgrammar_rulesmap_t ucam::hifst::SentenceSpecificGrammarData::rulesWithRhsSpan1

Sentence-specific data. cells containing potentially applicable rules with one element

Definition at line 49 of file data.ssgrammar.hpp.

ssgrammar_rulesmap_t ucam::hifst::SentenceSpecificGrammarData::rulesWithRhsSpan2OrMore

cells containing potentially applicable rules with two or more elements

Definition at line 51 of file data.ssgrammar.hpp.

The documentation for this struct was generated from the following file:

data.ssgrammar.hpp

Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation