|
SSJ V. 2.6. |
||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object umontreal.iro.lecuyer.randvar.RandomVariateGen umontreal.iro.lecuyer.randvar.BetaGen
public class BetaGen
This class implements random variate generators with the beta distribution with shape parameters α > 0 and β > 0, over the interval (a, b), where a < b. The density function of this distribution is
GammaGen
.
Local copies of the parameters α, β, a, and b
are maintained in this class.
The (non-static) nextDouble method simply calls inverseF on the
distribution.
Constructor Summary | |
---|---|
BetaGen(RandomStream s,
BetaDist dist)
Creates a new generator for the distribution dist, using stream s. |
|
BetaGen(RandomStream s,
double alpha,
double beta)
Creates a new beta generator with parameters α = alpha and β = beta, over the interval (0, 1), using stream s. |
|
BetaGen(RandomStream s,
double alpha,
double beta,
double a,
double b)
Creates a new beta generator with parameters α = alpha and β = beta, over the interval (a, b), using stream s. |
Method Summary | |
---|---|
double |
getA()
Returns the parameter a of this object. |
double |
getAlpha()
Returns the parameter α of this object. |
double |
getB()
Returns the parameter b of this object. |
double |
getBeta()
Returns the parameter β of this object. |
static double |
nextDouble(RandomStream s,
double alpha,
double beta,
double a,
double b)
Generates a variate from the beta distribution with parameters α = alpha, β = beta, over the interval (a, b), using stream s. |
Methods inherited from class umontreal.iro.lecuyer.randvar.RandomVariateGen |
---|
getDistribution, getStream, nextArrayOfDouble, nextDouble, setStream, toString |
Methods inherited from class java.lang.Object |
---|
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
---|
public BetaGen(RandomStream s, double alpha, double beta, double a, double b)
public BetaGen(RandomStream s, double alpha, double beta)
public BetaGen(RandomStream s, BetaDist dist)
Method Detail |
---|
public static double nextDouble(RandomStream s, double alpha, double beta, double a, double b)
public double getAlpha()
public double getBeta()
public double getA()
public double getB()
|
SSJ V. 2.6. |
||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |