ExpGammaExpMOMEstimator (ELKI: Environment for DeveLoping KDD-Applications Supported by Index-Structures)

java.lang.Object
- elki.math.statistics.distribution.estimator.ExpGammaExpMOMEstimator

All Implemented Interfaces:

DistributionEstimator<ExpGammaDistribution>
```
public class ExpGammaExpMOMEstimator
extends java.lang.Object
implements DistributionEstimator<ExpGammaDistribution>
```
Simple parameter estimation for the ExpGamma distribution. This is a very naive estimation, based on the mean and variance only, sometimes referred to as the "Method of Moments" (MOM). This estimator based on the GammaMOMEstimator and a simple exp data transformation.

Since:

0.7.5

Author:

Erich Schubert

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class ExpGammaExpMOMEstimator.Par
Parameterization class.

Field Summary

Fields
Modifier and Type Field Description

static ExpGammaExpMOMEstimator STATIC
Static estimation using just the mean and variance.

Constructor Summary

Constructors
Modifier Constructor Description

private ExpGammaExpMOMEstimator()
Private constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`<A> ExpGammaDistribution`	`estimate(A data, NumberArrayAdapter<?,A> adapter)`	General form of the parameter estimation
`ExpGammaDistribution`	`estimateFromExpMeanVariance(MeanVariance mv)`
`java.lang.Class<? super ExpGammaDistribution>`	`getDistributionClass()`	Get the class that is produced by the estimator.
`java.lang.String`	`toString()`

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

Methods inherited from interface elki.math.statistics.distribution.estimator.DistributionEstimator
estimate

- Field Detail
  - STATIC
```
public static final ExpGammaExpMOMEstimator STATIC
```
    Static estimation using just the mean and variance.
- Constructor Detail
  - ExpGammaExpMOMEstimator
```
private ExpGammaExpMOMEstimator()
```
    Private constructor.
- Method Detail
  - estimate
```
public <A> ExpGammaDistribution estimate(A data,
                                         NumberArrayAdapter<?,A> adapter)
```
    Description copied from interface: DistributionEstimator
    
    General form of the parameter estimation
    
    Specified by:
    
    estimate in interface DistributionEstimator<ExpGammaDistribution>
    
    Parameters:
    
    data - Data set
    
    adapter - Number array adapter
    
    Returns:
    
    Estimated distribution
  - estimateFromExpMeanVariance
```
public ExpGammaDistribution estimateFromExpMeanVariance(MeanVariance mv)
```
  - getDistributionClass
```
public java.lang.Class<? super ExpGammaDistribution> getDistributionClass()
```
    Description copied from interface: DistributionEstimator
    
    Get the class that is produced by the estimator.
    
    Specified by:
    
    getDistributionClass in interface DistributionEstimator<ExpGammaDistribution>
    
    Returns:
    
    Distribution class
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object