Package unifeat.featureSelection.filter.supervised

Class GainRatio

java.lang.Object

unifeat.featureSelection.FeatureSelection

unifeat.featureSelection.FeatureWeighting

unifeat.featureSelection.filter.WeightedFilterApproach

unifeat.featureSelection.filter.supervised.GainRatio

public class GainRatio
extends WeightedFilterApproach

This java class is used to implement the gain ratio method.

Author:

Sina Tabakhi

See Also:

• WeightedFilterApproach
• FeatureWeighting
• FeatureSelection

Field Summary

Fields inherited from class unifeat.featureSelection.FeatureWeighting

featureValues

Fields inherited from class unifeat.featureSelection.FeatureSelection

numClass, numFeatures, numSelectedFeature, selectedFeatureSubset, trainSet

Constructor Summary

Constructors

Constructor	Description
GainRatio(int sizeSelectedFeatureSubset)	Initializes the parameters
GainRatio(Object... arguments)	Initializes the parameters

Method Summary

Modifier and Type	Method	Description
void	evaluateFeatures()	Starts the feature selection process by gain ratio(GR) method

Methods inherited from class unifeat.featureSelection.filter.WeightedFilterApproach

newMethod

Methods inherited from class unifeat.featureSelection.FeatureWeighting

getFeatureValues

Methods inherited from class unifeat.featureSelection.FeatureSelection

getSelectedFeatureSubset, loadDataSet, loadDataSet, setNumSelectedFeature, validate

Methods inherited from class java.lang.Object

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

Constructor Details

GainRatio

public GainRatio(Object... arguments)

Initializes the parameters

Parameters:

arguments - array of parameters contains (sizeSelectedFeatureSubset) in which sizeSelectedFeatureSubset is the number of selected features

GainRatio

public GainRatio(int sizeSelectedFeatureSubset)

Initializes the parameters

Parameters:

sizeSelectedFeatureSubset - the number of selected features

Method Details

evaluateFeatures

public void evaluateFeatures()

Starts the feature selection process by gain ratio(GR) method

Specified by:

evaluateFeatures in class FeatureSelection