Package nltk :: Package ccg

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Package ccg

source code

Combinatory Categorial Grammar.

For more information see nltk/doc/contrib/ccg/ccg.pdf

Submodules

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nltk.ccg.api
nltk.ccg.chart: The lexicon is constructed by calling lexicon.parseLexicon(<lexicon string>).
nltk.ccg.combinator
nltk.ccg.lexicon

Classes

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UndirectedSubstitution
Substitution (permutation) combinator.

CCGChart

UndirectedFunctionApplication
Class representing function application.

CCGChartParser
Chart parser for CCGs.

ForwardCombinator
Class representing combinators where the primary functor is on the left.

CCGEdge

CCGLeafEdge
Class representing leaf edges in a CCG derivation.

BackwardCombinator
The backward equivalent of the ForwardCombinator class.

UndirectedBinaryCombinator
Abstract class for representing a binary combinator.

DirectedBinaryCombinator
Wrapper for the undirected binary combinator.

UndirectedComposition
Functional composition (harmonic) combinator.

UndirectedTypeRaise
Undirected combinator for type raising.

CCGLexicon
Class representing a lexicon for CCG grammars.

Variables

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ForwardSubstitution = ForwardCombinator(UndirectedSubstitution...

ForwardT = ForwardCombinator(UndirectedTypeRaise(), forwardTCo...

BackwardBx = BackwardCombinator(UndirectedComposition(), backw...

BackwardComposition = BackwardCombinator(UndirectedComposition...

BackwardApplication = BackwardCombinator(UndirectedFunctionApp...

BackwardSx = BackwardCombinator(UndirectedSubstitution(), back...

ForwardComposition = ForwardCombinator(UndirectedComposition()...

ForwardApplication = ForwardCombinator(UndirectedFunctionAppli...

BackwardT = BackwardCombinator(UndirectedTypeRaise(), backward...

Variables Details

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ForwardSubstitution

Value:

ForwardCombinator(UndirectedSubstitution(), forwardSConstraint)

ForwardT

Value:

ForwardCombinator(UndirectedTypeRaise(), forwardTConstraint)

BackwardBx

Value:

BackwardCombinator(UndirectedComposition(), backwardBxConstraint, suff
ix= 'x')

BackwardComposition

Value:

BackwardCombinator(UndirectedComposition(), backwardOnly)

BackwardApplication

Value:

BackwardCombinator(UndirectedFunctionApplication(), backwardOnly)

BackwardSx

Value:

BackwardCombinator(UndirectedSubstitution(), backwardSxConstraint, 'x'
)

ForwardComposition

Value:

ForwardCombinator(UndirectedComposition(), forwardOnly)

ForwardApplication

Value:

ForwardCombinator(UndirectedFunctionApplication(), forwardOnly)

BackwardT

Value:

BackwardCombinator(UndirectedTypeRaise(), backwardTConstraint)