net.sf.doodleproject.numerics4j.random
Class LaplaceRandomVariable

java.lang.Object
  net.sf.doodleproject.numerics4j.random.AbstractContinuousRandomVariable
      net.sf.doodleproject.numerics4j.random.LaplaceRandomVariable

All Implemented Interfaces:

ContinuousRandomVariable

public class LaplaceRandomVariable
extends AbstractContinuousRandomVariable

A random variable generator for the Laplace distribution.

References:

1. Wikipedia contributors, "Laplace Distribution," Wikipedia, The Free Encyclopedia, http://en.wikipedia.org/wiki/Laplace_distribution

Since:

1.3

Version:

$Revision: 1.3 $ $Date: 2007/11/18 23:51:19 $

Constructor Summary

LaplaceRandomVariable()
Default constructor.

LaplaceRandomVariable(double m, double s)
Create a random variable with the given mean and scale.

LaplaceRandomVariable(double m, double s, RNG source)
Create a random variable with the given parameters.

Method Summary

double	nextRandomVariable() Access the next random variable from this generator.
static double	nextRandomVariable(double m, double s, RNG source) Access the next random variable using the given generator.

Methods inherited from class net.sf.doodleproject.numerics4j.random.AbstractContinuousRandomVariable

getSource, nextRandomNumber

Methods inherited from class java.lang.Object

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

Constructor Detail

LaplaceRandomVariable

public LaplaceRandomVariable()

Default constructor. Mean is set to zero and scale is set to one.

LaplaceRandomVariable

public LaplaceRandomVariable(double m,
                             double s)

Create a random variable with the given mean and scale.

Parameters:

m - the mean.

s - the scale.

LaplaceRandomVariable

public LaplaceRandomVariable(double m,
                             double s,
                             RNG source)

Create a random variable with the given parameters.

Parameters:

m - the mean.

s - the scale parameter.

source - the source generator.

Method Detail

nextRandomVariable

public static double nextRandomVariable(double m,
                                        double s,
                                        RNG source)

Access the next random variable using the given generator.

Parameters:

m - the mean.

s - the scale parameter.

source - the source generator.

Returns:

the next random variable.

nextRandomVariable

public double nextRandomVariable()

Access the next random variable from this generator.

Returns:

the next random variable.