Class GiniIndex

java.lang.Object

org.tribuo.classification.dtree.impurity.GiniIndex

All Implemented Interfaces:

com.oracle.labs.mlrg.olcut.config.Configurable, com.oracle.labs.mlrg.olcut.provenance.Provenancable<com.oracle.labs.mlrg.olcut.provenance.ConfiguredObjectProvenance>, LabelImpurity

public class GiniIndex
extends Object
implements LabelImpurity

The Gini index impurity measure.

Constructor Summary

Constructors

Constructor	Description
GiniIndex()

Method Summary

Modifier and Type	Method	Description
com.oracle.labs.mlrg.olcut.provenance.ConfiguredObjectProvenance	getProvenance()
double	impurityNormed(double[] input)	Calculates the impurity, assuming it's input is a normalized probability distribution.
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.oracle.labs.mlrg.olcut.config.Configurable

postConfig

Methods inherited from interface org.tribuo.classification.dtree.impurity.LabelImpurity

impurity, impurity, impurity, impurity, impurityWeighted, impurityWeighted

Constructor Details

GiniIndex

public GiniIndex()

Method Details

impurityNormed

public double impurityNormed(double[] input)

Description copied from interface: LabelImpurity

Calculates the impurity, assuming it's input is a normalized probability distribution.

Specified by:

impurityNormed in interface LabelImpurity

Parameters:

input - The input probability distribution.

Returns:

The impurity.

toString

public String toString()

Overrides:

toString in class Object

getProvenance

public com.oracle.labs.mlrg.olcut.provenance.ConfiguredObjectProvenance getProvenance()

Specified by:

getProvenance in interface com.oracle.labs.mlrg.olcut.provenance.Provenancable<com.oracle.labs.mlrg.olcut.provenance.ConfiguredObjectProvenance>