de.up.ling.irtg.maxent

Class ChildOfFeature

java.lang.Object

de.up.ling.irtg.maxent.FeatureFunction<String,Double>

de.up.ling.irtg.maxent.ChildOfFeature

public class ChildOfFeature
extends FeatureFunction<String,Double>

Author:

Danilo Baumgarten

Constructor Summary

Constructors

Constructor and Description
ChildOfFeature(String parentLabel, String childLabel)

Method Summary

Modifier and Type	Method and Description
Double	evaluate(Rule rule, TreeAutomaton<String> automaton, MaximumEntropyIrtg irtg, Map<String,Object> inputs) Computes the value of the feature function for a given rule.
String	getChildLabel()
String	getParentLabel()
String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ChildOfFeature

public ChildOfFeature(String parentLabel,
                      String childLabel)

Method Detail

getParentLabel

public String getParentLabel()

getChildLabel

public String getChildLabel()

evaluate

public Double evaluate(Rule rule,
                       TreeAutomaton<String> automaton,
                       MaximumEntropyIrtg irtg,
                       Map<String,Object> inputs)

Description copied from class: FeatureFunction

Computes the value of the feature function for a given rule. Implement this method in a subclass to realize the actual feature function.

Specified by:

evaluate in class FeatureFunction<String,Double>

Parameters:

rule - a rule in "automaton"

automaton - the tree automaton to which "rule" belongs, typically a parse chart

irtg - the maxent IRTG which defined the grammar rule on which "rule" is based

inputs - the inputs that are currently being parsed

Returns:

the value of this feature function on those inputs

toString

public String toString()

Overrides:

toString in class FeatureFunction<String,Double>