SSJ
V. 2.6.

umontreal.iro.lecuyer.randvar
Class BinomialConvolutionGen

java.lang.Object
  extended by umontreal.iro.lecuyer.randvar.RandomVariateGen
      extended by umontreal.iro.lecuyer.randvar.RandomVariateGenInt
          extended by umontreal.iro.lecuyer.randvar.BinomialGen
              extended by umontreal.iro.lecuyer.randvar.BinomialConvolutionGen

public class BinomialConvolutionGen
extends BinomialGen

Implements binomial random variate generators using the convolution method. This method generates n Bernouilli random variates with parameter p and adds them up. Its advantages are that it requires little computer memory and no setup time. Its disadvantage is that it is very slow for large n. It makes sense only when n is small.


Constructor Summary
BinomialConvolutionGen(RandomStream s, BinomialDist dist)
          Creates a random variate generator for the binomial distribution dist and stream s.
BinomialConvolutionGen(RandomStream s, int n, double p)
          Creates a binomial random variate generator with parameters n and p, using stream s.
 
Method Summary
 int nextInt()
          Generates a random number (an integer) from the discrete distribution contained in this object.
static int nextInt(RandomStream s, int n, double p)
           
 
Methods inherited from class umontreal.iro.lecuyer.randvar.BinomialGen
getN, getP
 
Methods inherited from class umontreal.iro.lecuyer.randvar.RandomVariateGenInt
getDistribution, nextArrayOfInt
 
Methods inherited from class umontreal.iro.lecuyer.randvar.RandomVariateGen
getStream, nextArrayOfDouble, nextDouble, setStream, toString
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

BinomialConvolutionGen

public BinomialConvolutionGen(RandomStream s,
                              int n,
                              double p)
Creates a binomial random variate generator with parameters n and p, using stream s.


BinomialConvolutionGen

public BinomialConvolutionGen(RandomStream s,
                              BinomialDist dist)
Creates a random variate generator for the binomial distribution dist and stream s.

Method Detail

nextInt

public int nextInt()
Description copied from class: RandomVariateGenInt
Generates a random number (an integer) from the discrete distribution contained in this object. By default, this method uses inversion by calling the inverseF method of the distribution object. Alternative generating methods are provided in subclasses.

Overrides:
nextInt in class RandomVariateGenInt
Returns:
the generated value

nextInt

public static int nextInt(RandomStream s,
                          int n,
                          double p)

SSJ
V. 2.6.

To submit a bug or ask questions, send an e-mail to Pierre L'Ecuyer.