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java.lang.Objectumontreal.iro.lecuyer.randvar.RandomVariateGen
umontreal.iro.lecuyer.randvar.GammaGen
umontreal.iro.lecuyer.randvar.ErlangGen
public class ErlangGen
This class implements random variate generators for the Erlang distribution with parameters k > 0 and λ > 0. This Erlang random variable is the sum of k exponentials with parameter λ and has mean k/λ.
The (non-static) nextDouble method simply calls inverseF on the distribution.
| Constructor Summary | |
|---|---|
ErlangGen(RandomStream s,
ErlangDist dist)
Creates a new generator for the distribution dist and stream s. |
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ErlangGen(RandomStream s,
int k)
Creates an Erlang random variate generator with parameters k and λ = 1, using stream s. |
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ErlangGen(RandomStream s,
int k,
double lambda)
Creates an Erlang random variate generator with parameters k and λ = lambda, using stream s. |
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| Method Summary | |
|---|---|
int |
getK()
Returns the parameter k of this object. |
static double |
nextDouble(RandomStream s,
int k,
double lambda)
Generates a new variate from the Erlang distribution with parameters k = k and λ = lambda, using stream s. |
| 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, 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 ErlangGen(RandomStream s,
int k,
double lambda)
public ErlangGen(RandomStream s,
int k)
public ErlangGen(RandomStream s,
ErlangDist dist)
| Method Detail |
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public static double nextDouble(RandomStream s,
int k,
double lambda)
public int getK()
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SSJ V. 2.6. |
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