javanpst.distributions.tests

Class CDDistribution

java.lang.Object

javanpst.distributions.tests.CDDistribution

public class CDDistribution
extends java.lang.Object

An implementation of the Charkraborti and Desu test test distribution. Uses a Singleton pattern to ensure only an instance of the class is allowed.

Method Summary

Modifier and Type	Method and Description
double	computeAsymptoticProbability(double W, int N, int populations, int length) Compute asymptotic p-value, following a normal distribution
double	computeExactProbability(double W, int N, int populations, int length) Compute exact p-value of the CD distribution
static CDDistribution	getInstance() Singleton pattern access to the distribution

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static CDDistribution getInstance()

Singleton pattern access to the distribution

Returns:

the instance of the distribution

computeExactProbability

public double computeExactProbability(double W,
                                      int N,
                                      int populations,
                                      int length)

Compute exact p-value of the CD distribution

Parameters:

W - W statistic

N - number of elements

populations - number of populations

length - number values per sample

Returns:

p-value computed

computeAsymptoticProbability

public double computeAsymptoticProbability(double W,
                                           int N,
                                           int populations,
                                           int length)

Compute asymptotic p-value, following a normal distribution

Parameters:

W - W statistic

N - number of elements

populations - number of populations

length - number values per sample

Returns:

p-value computed