com.rapidminer.operator.validation.clustering.exampledistribution
Class SumOfSquares

java.lang.Object
  com.rapidminer.operator.validation.clustering.exampledistribution.SumOfSquares

All Implemented Interfaces:

ExampleDistributionMeasure

public class SumOfSquares
extends java.lang.Object
implements ExampleDistributionMeasure

Calculates an item distribution measure by summing up the squares of the fraction of items in each cluster. The result is inverted, thus the higher the value, the better the items are distributed.

Author:

Michael Wurst

Constructor Summary

SumOfSquares()

Method Summary

double

evaluate(int[] x, int n)

Methods inherited from class java.lang.Object

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

Constructor Detail

SumOfSquares

public SumOfSquares()

Method Detail

evaluate

public double evaluate(int[] x,
                       int n)

Specified by:

evaluate in interface ExampleDistributionMeasure