Utility
Class Erlang

java.lang.Object
  |
  +--Utility.RandomNumber
        |
        +--Utility.Erlang

public class Erlang

extends RandomNumber

Erlang is used to generate random variables from the Erlang distribution.

This is a continuous distribution.

Tests Performed
1000 samples were generated and the means and variances were examined. Subjectively, they seemed correct. Goodness of fit tests where not performed.

Constructor Summary

Erlang(double mean, double stdDev)
Erlang constructor.

Method Summary

double	getMean()
double	getStdDev()
double	getVariance()
double	sampleDouble() The sampleDouble function returns a random variable that is chosen from a Erlang distribution with parameters as set in the constructor.
int	sampleInt() The sampleInt function should not be called for this continuous distribution.

Methods inherited from class Utility.RandomNumber

goodnessOfFitTest, goodnessOfFitTest, randomMixer, resetRandomMixer, sample01

Methods inherited from class java.lang.Object

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

Constructor Detail

Erlang

public Erlang(double mean,
              double stdDev)

Erlang constructor. Initialize the parameters of the Erlang distribution.

Parameters:

mean - The mean of the distribution

Method Detail

getMean

public double getMean()

getVariance

public double getVariance()

getStdDev

public double getStdDev()

sampleDouble

public double sampleDouble()

The sampleDouble function returns a random variable that is chosen from a Erlang distribution with parameters as set in the constructor.

Overrides:

sampleDouble in class RandomNumber

See Also:

Erlang(double, double)

sampleInt

public int sampleInt()

The sampleInt function should not be called for this continuous distribution.

Overrides:

sampleInt in class RandomNumber