edu.illinois.cs.cogcomp.lbjava.classify

Class MultiValueComparer

java.lang.Object

edu.illinois.cs.cogcomp.lbjava.classify.Classifier

edu.illinois.cs.cogcomp.lbjava.classify.ValueComparer

edu.illinois.cs.cogcomp.lbjava.classify.MultiValueComparer

All Implemented Interfaces:

Serializable, Cloneable

public class MultiValueComparer
extends ValueComparer

This classifier applies another classifier to the example object and returns a Boolean feature (with value "true" or "false") indicating whether a given feature value appeared in the output of the classifier. This behavior differs from that of ValueComparer because it does not assume that the given classifier will return only a single feature.

Author:

Nick Rizzolo

See Also:

Serialized Form

Field Summary

Fields inherited from class edu.illinois.cs.cogcomp.lbjava.classify.ValueComparer

labeler, value

Fields inherited from class edu.illinois.cs.cogcomp.lbjava.classify.Classifier

containingPackage, name

Constructor Summary

Constructors

Constructor and Description
MultiValueComparer(Classifier c, String v) Constructor.

Method Summary

Modifier and Type	Method and Description
FeatureVector	classify(Object o) Returns a Boolean feature (with value "true" or "false") indicating whether the output of ValueComparer.labeler applied to the argument object contained the feature value referenced by ValueComparer.value.
String	discreteValue(Object o) Returns the value of the discrete feature that would be returned by this classifier.
Feature	featureValue(Object o) Returns the classification of the given example object as a single feature instead of a FeatureVector.
short	shortValue(Object o) Returns the prediction of this classifier as a short that acts as a pointer into DiscreteFeature.BooleanValues.
String	toString() The String representation of a ValueComparer has the form "ValueComparer(child), where child is the String representation of the classifier whose value is being compared.

Methods inherited from class edu.illinois.cs.cogcomp.lbjava.classify.ValueComparer

allowableValues, getInputType, setLabeler

Methods inherited from class edu.illinois.cs.cogcomp.lbjava.classify.Classifier

classify, clone, discreteValueArray, getCompositeChildren, getOutputType, realValue, realValueArray, test, valueIndexOf

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiValueComparer

public MultiValueComparer(Classifier c,
                          String v)

Constructor.

Parameters:

c - The classifier whose value will be compared.

v - The value to compare with.

Method Detail

classify

public FeatureVector classify(Object o)

Returns a Boolean feature (with value "true" or "false") indicating whether the output of ValueComparer.labeler applied to the argument object contained the feature value referenced by ValueComparer.value.

Overrides:

classify in class ValueComparer

Parameters:

o - The object to make decisions about.

Returns:

A feature vector containing the feature described above.

featureValue

public Feature featureValue(Object o)

Returns the classification of the given example object as a single feature instead of a FeatureVector.

Overrides:

featureValue in class ValueComparer

Parameters:

o - The object to classify.

Returns:

The classification of o as a feature.

discreteValue

public String discreteValue(Object o)

Returns the value of the discrete feature that would be returned by this classifier.

Overrides:

discreteValue in class ValueComparer

Parameters:

o - The object to classify.

Returns:

The value of the feature produced for the input object.

shortValue

public short shortValue(Object o)

Returns the prediction of this classifier as a short that acts as a pointer into DiscreteFeature.BooleanValues.

Parameters:

o - The object to classify.

Returns:

The classification of o as a short.

toString

public String toString()

The String representation of a ValueComparer has the form "ValueComparer(child), where child is the String representation of the classifier whose value is being compared.

Overrides:

toString in class ValueComparer

Returns:

A string of the form described above.