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

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

public class VariationOfInformation
extends ExternalValidationMeasure

References:

   M. Meila, 2007.
   Comparing clusterings -- an information based distance.
 

Version:

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

Author:

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

Constructor Summary

VariationOfInformation()

Method Summary

static double	log2(double value)
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

VariationOfInformation

public VariationOfInformation()

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:

log2

public static double log2(double value)