Package dev.nm.stat.random.rng.multivariate

Class MultinomialRVG

java.lang.Object

dev.nm.stat.random.rng.multivariate.MultinomialRVG

All Implemented Interfaces:

RandomVectorGenerator, Seedable

public class MultinomialRVG
extends Object
implements RandomVectorGenerator

A multinomial distribution puts N objects into K bins according to the bins' probabilities. An output random vector counts the number of objects in each bin, making a total of N.

The R equivalent function is rmultinom in package normix.

Constructor Summary

Constructors

Constructor	Description
MultinomialRVG(int N, double[] prob)	Constructs a multinomial random vector generator.
MultinomialRVG(int N, double[] prob, RandomLongGenerator uniform)	Constructs a multinomial random vector generator.

Method Summary

Modifier and Type	Method	Description
double[]	nextVector()	Gets the next random vector.
void	seed(long... seeds)	Seed the random number/vector/scenario generator to produce repeatable experiments.

Methods inherited from class java.lang.Object

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

Constructor Details

MultinomialRVG

public MultinomialRVG(int N,
 double[] prob,
 RandomLongGenerator uniform)

Constructs a multinomial random vector generator.

Parameters:

N - an integer, say N, specifying the total number of objects that are put into K boxes in a typical multinomial experiment

prob - a numeric non-negative vector of length K, specifying the probability for the K boxes

uniform - a uniform random number generator

MultinomialRVG

public MultinomialRVG(int N,
 double[] prob)

Constructs a multinomial random vector generator.

Parameters:

N - an integer, say N, specifying the total number of objects that are put into K boxes in a typical multinomial experiment

prob - a numeric non-negative vector of length K, specifying the probability for the K boxes

Method Details

seed

public void seed(long... seeds)

Description copied from interface: Seedable

Seed the random number/vector/scenario generator to produce repeatable experiments.

Specified by:

seed in interface Seedable

Parameters:

seeds - the seeds

nextVector

public double[] nextVector()

Description copied from interface: RandomVectorGenerator

Gets the next random vector.

Specified by:

nextVector in interface RandomVectorGenerator

Returns:

the next random vector