Gamma

java.lang.Object
- org.ojalgo.random.RandomNumber
- - org.ojalgo.random.Gamma

All Implemented Interfaces:

java.lang.Comparable<RandomNumber>, java.util.function.DoubleSupplier, java.util.function.Supplier<java.lang.Double>, BasicFunction, NullaryFunction<java.lang.Double>, PrimitiveFunction.Nullary, Distribution, AccessScalar<java.lang.Double>, ComparableNumber<RandomNumber>, NumberDefinition
```
public class Gamma
extends RandomNumber
```
Distribution of the sum of aCount random variables with an exponential distribution with parameter aLambda.

Nested Class Summary
- Nested classes/interfaces inherited from interface org.ojalgo.function.BasicFunction
  BasicFunction.Differentiable<N extends java.lang.Comparable<N>,F extends BasicFunction>, BasicFunction.Integratable<N extends java.lang.Comparable<N>,F extends BasicFunction>, BasicFunction.PlainUnary<T,R>

Field Summary

Fields
Modifier and Type Field Description

private double myRate

private double myShape

Constructor Summary

Constructors
Constructor Description

Gamma()

Gamma(double aShape, double aRate)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected double`	`generate()`	A Convenient Way of Generating Gamma Random Variables Using Generalized Exponential Distribution
`double`	`getExpected()`
`double`	`getVariance()`	Subclasses must override either getStandardDeviation() or getVariance()!

Methods inherited from class org.ojalgo.random.RandomNumber
checkProbabilty, compareTo, doubleValue, floatValue, getStandardDeviation, intValue, invoke, longValue, newSampleSet, random, setRandom, setSeed, toString

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.ojalgo.function.NullaryFunction
andThen, get, getAsDouble

Methods inherited from interface org.ojalgo.type.NumberDefinition
booleanValue, byteValue, shortValue

- Field Detail
  - myShape
```
private final double myShape
```
  - myRate
```
private final double myRate
```
- Constructor Detail
  - Gamma
```
public Gamma()
```
  - Gamma
```
public Gamma(double aShape,
             double aRate)
```
- Method Detail
  - getExpected
```
public double getExpected()
```
  - getVariance
```
public double getVariance()
```
    Description copied from class: RandomNumber
    
    Subclasses must override either getStandardDeviation() or getVariance()!
    
    Specified by:
    
    getVariance in interface Distribution
    
    Overrides:
    
    getVariance in class RandomNumber
    
    See Also:
    
    Distribution.getStandardDeviation(), Distribution.getVariance()
  - generate
```
protected double generate()
```
    A Convenient Way of Generating Gamma Random Variables Using Generalized Exponential Distribution
    
    Specified by:
    
    generate in class RandomNumber
    
    See Also:
    
    RandomNumber.generate()