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SSJ V. 2.6. |
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java.lang.Object umontreal.iro.lecuyer.randvar.RandomVariateGen umontreal.iro.lecuyer.randvar.GammaGen umontreal.iro.lecuyer.randvar.ErlangGen umontreal.iro.lecuyer.randvar.ErlangConvolutionGen
public class ErlangConvolutionGen
This class implements Erlang random variate generators using the convolution method. This method uses inversion to generate k exponential variates with parameter λ and returns their sum.
Constructor Summary | |
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ErlangConvolutionGen(RandomStream s,
ErlangDist dist)
Creates a new generator for the distribution dist and stream s. |
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ErlangConvolutionGen(RandomStream s,
int k)
Creates an Erlang random variate generator with parameters k and λ = 1, using stream s. |
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ErlangConvolutionGen(RandomStream s,
int k,
double lambda)
Creates an Erlang random variate generator with parameters k and λ = lambda, using stream s. |
Method Summary | |
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double |
nextDouble()
Generates a random number from the continuous distribution contained in this object. |
static double |
nextDouble(RandomStream s,
int k,
double lambda)
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Methods inherited from class umontreal.iro.lecuyer.randvar.ErlangGen |
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getK |
Methods inherited from class umontreal.iro.lecuyer.randvar.GammaGen |
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getAlpha, getLambda, nextDouble |
Methods inherited from class umontreal.iro.lecuyer.randvar.RandomVariateGen |
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getDistribution, getStream, nextArrayOfDouble, setStream, toString |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public ErlangConvolutionGen(RandomStream s, int k, double lambda)
public ErlangConvolutionGen(RandomStream s, int k)
public ErlangConvolutionGen(RandomStream s, ErlangDist dist)
Method Detail |
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public double nextDouble()
RandomVariateGen
inverseF
method of the distribution object.
Alternative generating methods are provided in subclasses.
nextDouble
in class RandomVariateGen
public static double nextDouble(RandomStream s, int k, double lambda)
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