nltk.parse.featurechart

module documentation
(source)

Extension of chart parsing implementation to handle grammars with feature structures as nodes.

Class FeatureBottomUpChartParser Undocumented
Class FeatureBottomUpLeftCornerChartParser Undocumented
Class FeatureBottomUpPredictCombineRule Undocumented
Class FeatureBottomUpPredictRule Undocumented
Class FeatureChart A Chart for feature grammars. :see: Chart for more information.
Class FeatureChartParser Undocumented
Class FeatureEmptyPredictRule Undocumented
Class FeatureFundamentalRule

Broken description
Class FeatureSingleEdgeFundamentalRule A specialized version of the completer / single edge fundamental rule that operates on nonterminals whose symbols are ``FeatStructNonterminal``s. Rather than simply comparing the nonterminals for equality, they are unified.
Class FeatureTopDownChartParser Undocumented
Class FeatureTopDownInitRule Undocumented
Class FeatureTopDownPredictRule A specialized version of the (cached) top down predict rule that operates on nonterminals whose symbols are ``FeatStructNonterminal``s. Rather than simply comparing the nonterminals for equality, they are unified.
Class FeatureTreeEdge A specialized tree edge that allows shared variable bindings between nonterminals on the left-hand side and right-hand side.
Class InstantiateVarsChart A specialized chart that 'instantiates' variables whose names start with '@', by replacing them with unique new variables. In particular, whenever a complete edge is added to the chart, any variables in the edge's ...
Function demo Undocumented
Function demo_grammar Undocumented
Function run_profile Undocumented
Constant BU_FEATURE_STRATEGY Undocumented
Constant BU_LC_FEATURE_STRATEGY Undocumented
Constant TD_FEATURE_STRATEGY Undocumented
def demo(print_times=True, print_grammar=True, print_trees=True, print_sentence=True, trace=1, parser=FeatureChartParser, sent='I saw John with a dog with my cookie'): (source)

Undocumented

def demo_grammar(): (source)

Undocumented

def run_profile(): (source)

Undocumented

BU_FEATURE_STRATEGY = (source)

Undocumented

Value
[LeafInitRule(),
 FeatureEmptyPredictRule(),
 FeatureBottomUpPredictRule(),
 FeatureSingleEdgeFundamentalRule()]
BU_LC_FEATURE_STRATEGY = (source)

Undocumented

Value
[LeafInitRule(),
 FeatureEmptyPredictRule(),
 FeatureBottomUpPredictCombineRule(),
 FeatureSingleEdgeFundamentalRule()]
TD_FEATURE_STRATEGY = (source)

Undocumented

Value
[LeafInitRule(),
 FeatureTopDownInitRule(),
 FeatureTopDownPredictRule(),
 FeatureSingleEdgeFundamentalRule()]