THIS CLASS HAS BEEN RENAMED InverseGammaGen . More...
Public Member Functions | |
| Pearson5Gen (RandomStream s, double alpha, double beta) | |
| THIS CLASS HAS BEEN RENAMED InverseGammaGen . | |
| Pearson5Gen (RandomStream s, double alpha) | |
| Creates a Pearson5 random variate generator with parameters. | |
| Pearson5Gen (RandomStream s, Pearson5Dist dist) | |
| Creates a new generator for the distribution dist, using stream s. | |
| double | getAlpha () |
| Returns the parameter \(\alpha\) of this object. | |
| double | getBeta () |
| Returns the parameter \(\beta\) of this object. | |
| 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 s, double alpha, double beta) |
| Generates a variate from the Pearson V distribution with shape parameter \(\alpha> 0\) and scale parameter \(\beta> 0\). | |
Detailed Description
THIS CLASS HAS BEEN RENAMED InverseGammaGen .
This class implements random variate generators for the Pearson type V distribution with shape parameter \(\alpha> 0\) and scale parameter
\(\beta> 0\). The density function of this distribution is
\[ f(x) = \left\{\begin{array}{ll} \displaystyle\frac{x^{-(\alpha+ 1)}e^{-\beta/ x}}{\beta^{-\alpha} \Gamma(\alpha)} & \quad\mbox{for } x > 0 \\ 0 & \quad\mbox{otherwise,} \end{array} \right. \tag{fpearson5} \]
where \(\Gamma\) is the gamma function.
Definition at line 48 of file Pearson5Gen.java.
Constructor & Destructor Documentation
◆ Pearson5Gen() [1/3]
| umontreal.ssj.randvar.Pearson5Gen.Pearson5Gen | ( | RandomStream | s, |
| double | alpha, | ||
| double | beta ) |
THIS CLASS HAS BEEN RENAMED InverseGammaGen .
Creates a Pearson5 random variate generator with parameters
\(\alpha=\) alpha and \(\beta=\) beta, using stream s.
Definition at line 58 of file Pearson5Gen.java.
◆ Pearson5Gen() [2/3]
| umontreal.ssj.randvar.Pearson5Gen.Pearson5Gen | ( | RandomStream | s, |
| double | alpha ) |
Creates a Pearson5 random variate generator with parameters.
\(\alpha=\) alpha and \(\beta= 1\), using stream s.
Definition at line 68 of file Pearson5Gen.java.
◆ Pearson5Gen() [3/3]
| umontreal.ssj.randvar.Pearson5Gen.Pearson5Gen | ( | RandomStream | s, |
| Pearson5Dist | dist ) |
Creates a new generator for the distribution dist, using stream s.
Definition at line 75 of file Pearson5Gen.java.
Member Function Documentation
◆ getAlpha()
| double umontreal.ssj.randvar.Pearson5Gen.getAlpha | ( | ) |
Returns the parameter \(\alpha\) of this object.
Definition at line 92 of file Pearson5Gen.java.
◆ getBeta()
| double umontreal.ssj.randvar.Pearson5Gen.getBeta | ( | ) |
Returns the parameter \(\beta\) of this object.
Definition at line 99 of file Pearson5Gen.java.
◆ nextDouble()
|
static |
Generates a variate from the Pearson V distribution with shape parameter \(\alpha> 0\) and scale parameter \(\beta> 0\).
Definition at line 85 of file Pearson5Gen.java.
The documentation for this class was generated from the following file:
- src/main/java/umontreal/ssj/randvar/Pearson5Gen.java
