jdistlib.disttest

Class DistributionTest

java.lang.Object

jdistlib.disttest.DistributionTest

public class DistributionTest
extends Object

Comparing two distributions

Author:

Roby Joehanes

Constructor Summary

Constructors

Constructor and Description
DistributionTest()

Method Summary

Methods

Modifier and Type	Method and Description
static double	kolmogorov_smirnov_pvalue(double maxDiv, int lengthX, int lengthY) Compute the P-value out of the D-score produced by kolmogorov_smirnov_statistic.
static double	kolmogorov_smirnov_statistic(double[] X, double[] Y) Compute the Kolmogorov-Smirnov test to test between two distribution.

Methods inherited from class java.lang.Object

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

Constructor Detail

DistributionTest

public DistributionTest()

Method Detail

kolmogorov_smirnov_statistic

public static final double kolmogorov_smirnov_statistic(double[] X,
                                  double[] Y)

Compute the Kolmogorov-Smirnov test to test between two distribution. Note: I don't multiply the D score with sqrt(nX*nY / (nX + nY)), which is needed for P-value computation

Parameters:

X - an array with length of nX

Y - an array with length of nY

Returns:

kolmogorov_smirnov_pvalue

public static final double kolmogorov_smirnov_pvalue(double maxDiv,
                               int lengthX,
                               int lengthY)

Compute the P-value out of the D-score produced by kolmogorov_smirnov_statistic.

Parameters:

maxDiv -

lengthX -

lengthY -

Returns: