Package nltk :: Package parse :: Module featurechart :: Class FeatureSingleEdgeFundamentalRule

type FeatureSingleEdgeFundamentalRule

         object --+                
                  |                
   chart.ChartRuleI --+            
                      |            
chart.AbstractChartRule --+        
                          |        
      chart.FundamentalRule --+    
                              |    
chart.SingleEdgeFundamentalRule --+
                                  |
                                 FeatureSingleEdgeFundamentalRule

Known Subclasses:

earleychart.FeatureCompleteFundamentalRule

A specialized version of the completer / single edge fundamental rule that operates on nonterminals whose symbols are FeatStructNonterminals. Rather than simply comparing the nonterminals for equality, they are unified.

Instance Methods

[hide private]

_apply_complete(self, chart, grammar, right_edge)

source code

_apply_incomplete(self, chart, grammar, left_edge)

source code

iter of EdgeI

apply_iter(self, chart, grammar, edge)
Returns: A generator that will add edges licensed by this rule and the given edges to the chart, one at a time.

Inherited from chart.AbstractChartRule: __str__, apply, apply_everywhere, apply_everywhere_iter

Class Variables

[hide private]

_fundamental_rule = FeatureFundamentalRule()

Inherited from chart.SingleEdgeFundamentalRule: NUM_EDGES

Method Details

[hide private]

_apply_complete(self, chart, grammar, right_edge)

source code

Overrides: chart.SingleEdgeFundamentalRule._apply_complete

_apply_incomplete(self, chart, grammar, left_edge)

source code

Overrides: chart.SingleEdgeFundamentalRule._apply_incomplete

apply_iter(self, chart, grammar, edge)

Parameters:

edges - A set of existing edges. The number of edges that should be passed to apply is specified by the NUM_EDGES class variable.

Returns: iter of EdgeI

A generator that will add edges licensed by this rule and the given edges to the chart, one at a time. Each time the generator is resumed, it will either add a new edge and yield that edge; or return.

Overrides: chart.ChartRuleI.apply_iter

(inherited documentation)