org.tribuo.classification.dtree.impurity

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 and Description
GiniIndex()

Method Summary

Modifier and Type	Method and 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 org.tribuo.classification.dtree.impurity.LabelImpurity

impurity, impurity, impurity, impurity, impurityWeighted, impurityWeighted

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

postConfig

Constructor Detail

GiniIndex

public GiniIndex()

Method Detail

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>