SSJ API Documentation
Stochastic Simulation in Java
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umontreal.ssj.randvar.HypoExponentialGen Class Reference

This class implements random variate generators for the hypoexponential distribution (see classes umontreal.ssj.probdist.HypoExponentialDist and umontreal.ssj.probdist.HypoExponentialDistQuick in package probdist for the definition). More...

Inheritance diagram for umontreal.ssj.randvar.HypoExponentialGen:
umontreal.ssj.randvar.RandomVariateGen

Public Member Functions

 HypoExponentialGen (RandomStream stream, double[] lambda)
 Creates a hypoexponential random variate generator with rates.
 HypoExponentialGen (RandomStream stream, HypoExponentialDist dist)
 Creates a new generator for the hypoexponential distribution dist with stream stream.
double[] getLambda ()
 Returns the \(\lambda_i\) associated with this object.
void setLambda (double[] lambda)
 Sets the rates \(\lambda_i = \) lam[ \(i-1\)],.
Public Member Functions inherited from umontreal.ssj.randvar.RandomVariateGen
 RandomVariateGen (RandomStream s, Distribution dist)
 Creates a new random variate generator from the distribution dist, using stream s.
double nextDouble ()
 Generates a random number from the continuous distribution contained in this object.
void nextArrayOfDouble (double[] v, int start, int n)
 Generates n random numbers from the continuous distribution contained in this object.
double[] nextArrayOfDouble (int n)
 Generates n random numbers from the continuous distribution contained in this object, and returns them in a new array of size n.
RandomStream getStream ()
 Returns the umontreal.ssj.rng.RandomStream used by this generator.
void setStream (RandomStream stream)
 Sets the umontreal.ssj.rng.RandomStream used by this generator to stream.
Distribution getDistribution ()
 Returns the umontreal.ssj.probdist.Distribution used by this generator.
String toString ()
 Returns a String containing information about the current generator.

Static Public Member Functions

static double nextDouble (RandomStream stream, double[] lambda)
 Uses inversion to generate a new hypoexponential variate with rates.

Detailed Description

This class implements random variate generators for the hypoexponential distribution (see classes umontreal.ssj.probdist.HypoExponentialDist and umontreal.ssj.probdist.HypoExponentialDistQuick in package probdist for the definition).

Definition at line 40 of file HypoExponentialGen.java.

Constructor & Destructor Documentation

◆ HypoExponentialGen() [1/2]

umontreal.ssj.randvar.HypoExponentialGen.HypoExponentialGen ( RandomStream stream,
double[] lambda )

Creates a hypoexponential random variate generator with rates.

\(\lambda_i = \) lambda[ \(i-1\)], \(i = 1,…,k\), using stream stream.

Definition at line 48 of file HypoExponentialGen.java.

◆ HypoExponentialGen() [2/2]

umontreal.ssj.randvar.HypoExponentialGen.HypoExponentialGen ( RandomStream stream,
HypoExponentialDist dist )

Creates a new generator for the hypoexponential distribution dist with stream stream.

Definition at line 56 of file HypoExponentialGen.java.

Member Function Documentation

◆ getLambda()

double[] umontreal.ssj.randvar.HypoExponentialGen.getLambda ( )

Returns the \(\lambda_i\) associated with this object.

Definition at line 76 of file HypoExponentialGen.java.

◆ nextDouble()

double umontreal.ssj.randvar.HypoExponentialGen.nextDouble ( RandomStream stream,
double[] lambda )
static

Uses inversion to generate a new hypoexponential variate with rates.

\(\lambda_i = \) lambda[ \(i-1\)], \(i = 1,…,k\), using stream stream. The inversion uses a root-finding method and is very slow.

Definition at line 69 of file HypoExponentialGen.java.

◆ setLambda()

void umontreal.ssj.randvar.HypoExponentialGen.setLambda ( double[] lambda)

Sets the rates \(\lambda_i = \) lam[ \(i-1\)],.

\(i = 1,…,k\) of this object.

Definition at line 85 of file HypoExponentialGen.java.


The documentation for this class was generated from the following file: