nltk.grammar.DependencyGrammar

class documentation

class DependencyGrammar(object): (source)

Constructor: DependencyGrammar(productions)

A dependency grammar. A DependencyGrammar consists of a set of productions. Each production specifies a head/modifier relationship between a pair of words.

Class Method	`fromstring`	Undocumented
Method	`__contains__`	Return True if this `DependencyGrammar` contains a `DependencyProduction` mapping 'head' to 'mod'.
Method	`__init__`	Create a new dependency grammar, from the set of `Productions`.
Method	`__repr__`	Return a concise string representation of the `DependencyGrammar`
Method	`__str__`	Return a verbose string representation of the `DependencyGrammar`
Method	`contains`	No summary
Instance Variable	`_productions`	Undocumented

@classmethod
def fromstring(cls, input): (source) ¶

Undocumented

def __contains__(self, head, mod): (source) ¶

Return True if this DependencyGrammar contains a DependencyProduction mapping 'head' to 'mod'.

Parameters
head:str	A head word.
mod:str	A mod word, to test as a modifier of 'head'.
Returns
bool	Undocumented

def __init__(self, productions): (source) ¶

Create a new dependency grammar, from the set of Productions.

Parameters
productions:list(Production)	The list of productions that defines the grammar

def __repr__(self): (source) ¶

Return a concise string representation of the DependencyGrammar

def __str__(self): (source) ¶

Return a verbose string representation of the DependencyGrammar

Returns
str	Undocumented

def contains(self, head, mod): (source) ¶

Parameters
head:str	A head word.
mod:str	A mod word, to test as a modifier of 'head'.
Returns
bool	true if this `DependencyGrammar` contains a `DependencyProduction` mapping 'head' to 'mod'.

_productions = (source) ¶

Undocumented