This class implements random variate generators for the binomial distribution. More...
Inheritance diagram for BinomialGen:
Collaboration diagram for BinomialGen:
Public Member Functions | |
| BinomialGen (RandomStream s, int n, double p) | |
Creates a binomial random variate generator with parameters \(n\) and \(p\), using stream s. | |
| BinomialGen (RandomStream s, BinomialDist dist) | |
Creates a random variate generator for the binomial distribution dist and the random stream s. | |
| int | getN () |
| Returns the parameter \(n\) of this object. | |
| double | getP () |
| Returns the parameter \(p\) of this object. | |
 Public Member Functions inherited from RandomVariateGenInt | |
| RandomVariateGenInt (RandomStream s, DiscreteDistributionInt dist) | |
Creates a new random variate generator for the discrete distribution dist, using stream s. More... | |
| int | nextInt () |
| Generates a random number (an integer) from the discrete distribution contained in this object. More... | |
| void | nextArrayOfInt (int[] v, int start, int n) |
Generates n random numbers from the discrete distribution contained in this object. More... | |
| int [] | nextArrayOfInt (int n) |
Generates n random numbers from the discrete distribution contained in this object, and returns them in a new array of size n. More... | |
| DiscreteDistributionInt | getDistribution () |
| Returns the umontreal.ssj.probdist.DiscreteDistributionInt used by this generator. More... | |
| Public Member Functions inherited from RandomVariateGen | |
| RandomVariateGen (RandomStream s, Distribution dist) | |
Creates a new random variate generator from the distribution dist, using stream s. More... | |
| double | nextDouble () |
| Generates a random number from the continuous distribution contained in this object. More... | |
| void | nextArrayOfDouble (double[] v, int start, int n) |
Generates n random numbers from the continuous distribution contained in this object. More... | |
| 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. More... | |
| RandomStream | getStream () |
| Returns the umontreal.ssj.rng.RandomStream used by this generator. More... | |
| 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. More... | |
| String | toString () |
Returns a String containing information about the current generator. | |
Static Public Member Functions | |
| static int | nextInt (RandomStream s, int n, double p) |
Generates a new integer from the binomial distribution with parameters \(n = \) n and \(p = \) p, using the given stream s. | |
Protected Member Functions | |
| void | setParams (int n, double p) |
| Sets the parameter \(n\) and \(p\) of this object. | |
Protected Attributes | |
| int | n = -1 |
| double | p = -1.0 |
| Protected Attributes inherited from RandomVariateGen | |
| RandomStream | stream |
| Distribution | dist |
Detailed Description
This class implements random variate generators for the binomial distribution.
It has parameters \(n\) and \(p\) with mass function
\[ p(x) = {n \choose x} p^x (1-p)^{n-x} = \frac{n!}{x!(n-x)!}\; p^x (1-p)^{n-x} \qquad\mbox{for } x=0,1,2,…, n \tag{fmass-binomial} \]
where \(n\) is a positive integer, and \(0\le p\le1\).
The (non-static) nextInt method simply calls inverseF on the distribution.
The documentation for this class was generated from the following file:
- BinomialGen.java
