Package net.bmahe.genetics4j.samples.clustering

Class FitnessUtils

java.lang.Object

net.bmahe.genetics4j.samples.clustering.FitnessUtils

public class FitnessUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
FitnessUtils()

Method Summary

Modifier and Type	Method	Description
private static final double	a_i(double[][] data, double[][] distances, Map<Integer,Set<Integer>> clusterToMembers, int clusterIndex, int i)
static final int[]	assignDataToClusters(double[][] data, double[][] distances, double[][] clusters)
private static final double	b_i(double[][] data, double[][] distances, Map<Integer,Set<Integer>> clusterToMembers, int numClusters, int clusterIndex, int i)
static final Fitness<Double>	computeFitness(int numDataPoints, double[][] data, double[][] distances, int numClusters)
static final Fitness<Double>	computeFitnessWithSSE(int numDataPoints, double[][] data, double[][] distances, int numClusters)
static final double	computeSilhouetteScore(double[][] data, double[][] distances, int numClusters, Map<Integer,Set<Integer>> clusterToMembers, int[] closestClusterIndex, int i)
static final double	computeSumSquaredErrors(double[][] data, double[][] distances, double[][] clusters, Map<Integer,Set<Integer>> clusterToMembers, int[] closestClusterIndex)

Methods inherited from class java.lang.Object

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

Constructor Details

FitnessUtils

public FitnessUtils()

Method Details

a_i

private static final double a_i(double[][] data,
 double[][] distances,
 Map<Integer,Set<Integer>> clusterToMembers,
 int clusterIndex,
 int i)

b_i

private static final double b_i(double[][] data,
 double[][] distances,
 Map<Integer,Set<Integer>> clusterToMembers,
 int numClusters,
 int clusterIndex,
 int i)

assignDataToClusters

public static final int[] assignDataToClusters(double[][] data,
 double[][] distances,
 double[][] clusters)

computeSilhouetteScore

public static final double computeSilhouetteScore(double[][] data,
 double[][] distances,
 int numClusters,
 Map<Integer,Set<Integer>> clusterToMembers,
 int[] closestClusterIndex,
 int i)

computeSumSquaredErrors

public static final double computeSumSquaredErrors(double[][] data,
 double[][] distances,
 double[][] clusters,
 Map<Integer,Set<Integer>> clusterToMembers,
 int[] closestClusterIndex)

computeFitness

public static final Fitness<Double> computeFitness(int numDataPoints,
 double[][] data,
 double[][] distances,
 int numClusters)

computeFitnessWithSSE

public static final Fitness<Double> computeFitnessWithSSE(int numDataPoints,
 double[][] data,
 double[][] distances,
 int numClusters)