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SSJ V. 2.6. |
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java.lang.Object umontreal.iro.lecuyer.randvar.RandomVariateGen umontreal.iro.lecuyer.randvar.InverseGammaGen
public class InverseGammaGen
This class implements random variate generators for the inverse gamma distribution with shape parameter α > 0 and scale parameter β > 0. The density function of this distribution is
Constructor Summary | |
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InverseGammaGen(RandomStream s,
double alpha)
Creates an inverse gamma random variate generator with parameters α = alpha and β = 1, using stream s. |
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InverseGammaGen(RandomStream s,
double alpha,
double beta)
Creates an inverse gamma random variate generator with parameters α = alpha and β = beta, using stream s. |
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InverseGammaGen(RandomStream s,
InverseGammaDist dist)
Creates a new generator for the distribution dist, using stream s. |
Method Summary | |
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double |
getAlpha()
Returns the parameter α of this object. |
double |
getBeta()
Returns the parameter β of this object. |
static double |
nextDouble(RandomStream s,
double alpha,
double beta)
Generates a variate from the inverse gamma distribution with shape parameter α > 0 and scale parameter β > 0. |
Methods inherited from class umontreal.iro.lecuyer.randvar.RandomVariateGen |
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getDistribution, getStream, nextArrayOfDouble, nextDouble, 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 InverseGammaGen(RandomStream s, double alpha, double beta)
public InverseGammaGen(RandomStream s, double alpha)
public InverseGammaGen(RandomStream s, InverseGammaDist dist)
Method Detail |
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public static double nextDouble(RandomStream s, double alpha, double beta)
public double getAlpha()
public double getBeta()
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SSJ V. 2.6. |
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