de.aitools.dm.clustering.validation.external
Class Purity

java.lang.Object
  de.aitools.dm.clustering.validation.ExternalValidationMeasure
      de.aitools.dm.clustering.validation.external.Purity

public class Purity
extends ExternalValidationMeasure

References:

   Ying Zhao and George Karypis, 2001.
   Criterion functions for ducument clustering: Experiments and analysis.
 

Version:

$Id: Purity.java,v 1.5 2011/03/22 14:59:04 hoppe Exp $

Author:

dennis.hoppe(/\t)uni-weimar.de

Constructor Summary

Purity()

Method Summary

double

measure(Matrix contingencyTable) Perform consecutive clustering evaluations in a more efficient manner.

Methods inherited from class de.aitools.dm.clustering.validation.ExternalValidationMeasure

measure

Methods inherited from class java.lang.Object

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

Constructor Detail

Purity

public Purity()

Method Detail

measure

public double measure(Matrix contingencyTable)

Description copied from class: ExternalValidationMeasure

Perform consecutive clustering evaluations in a more efficient manner.

Specified by:

measure in class ExternalValidationMeasure

Parameters:

contingencyTable - a precomputed contincengy table

Returns: