IRPact_modellierung.distributions

Class BinomialDistribution

java.lang.Object

IRPact_modellierung.distributions.Distribution

IRPact_modellierung.distributions.UnivariateDistribution

IRPact_modellierung.distributions.DiscreteDistribution

IRPact_modellierung.distributions.BinomialDistribution

public class BinomialDistribution
extends DiscreteDistribution

Class that models a binomial distribution using the cern.jet.random library for binomial distributions. Describes the distribution to derive an integer number of successes from a number of independent trials (Bernoulli experiments) with a success probability p.

Field Summary

Fields inherited from class IRPact_modellierung.distributions.Distribution

name

Constructor Summary

Constructors

Constructor and Description
BinomialDistribution(java.lang.String name, int n, double p) Generates the distribution for a fixed number of trials n with a success probability p.

Method Summary

Modifier and Type	Method and Description
double	draw() Draws a value from the distribution randomly through returning the value for which the cumulative distribution of this Binomial distribution corresponds to a value drawn from a normal distribution
int	getN() Resets the probability of success for individual Bernoulli experiments of the distribution
double	getP()

Methods inherited from class IRPact_modellierung.distributions.Distribution

getName, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

BinomialDistribution

public BinomialDistribution(java.lang.String name,
                            int n,
                            double p)
                     throws java.lang.IllegalArgumentException

Generates the distribution for a fixed number of trials n with a success probability p.

Parameters:

name - Name of the distribution to model (will be prefixed by Binomial_Distribution)

n - The number of tries / independent trials of Bernoulli experiments

p - probability of success for each Bernoulli experiment

Throws:

java.lang.IllegalArgumentException - Will be thrown when parameters are illegal (n negative or p not in unit interval ([0,1]))

Method Detail

draw

public double draw()

Draws a value from the distribution randomly through returning the value for which the cumulative distribution of this Binomial distribution corresponds to a value drawn from a normal distribution

Specified by:

draw in class UnivariateDistribution

Returns:

integer value in [0:n] drawn with the probability of the binomial distribution

getN

public int getN()

Resets the probability of success for individual Bernoulli experiments of the distribution

Parameters:

p - Probability of success of each individual Bernoulli experiment

Throws:

java.lang.IllegalArgumentException - gets thrown when an illegal value is provided for p (outside of unit interval [0,1])

getP

public double getP()