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

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

All Implemented Interfaces:

DistributionEstimator<LogGammaDistribution>, LogMOMDistributionEstimator<LogGammaDistribution>
```
public class LogGammaLogMOMEstimator
extends java.lang.Object
implements LogMOMDistributionEstimator<LogGammaDistribution>
```
Simple parameter estimation for the LogGamma 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 log data transformation.

Since:

0.6.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class LogGammaLogMOMEstimator.Par
Parameterization class.

Field Summary

Fields
Modifier and Type Field Description

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

Constructor Summary

Constructors
Modifier Constructor Description

private LogGammaLogMOMEstimator()
Private constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`LogGammaDistribution`	`estimateFromLogStatisticalMoments(StatisticalMoments mv, double shift)`	General form of the parameter estimation
`java.lang.Class<? super LogGammaDistribution>`	`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

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

- Field Detail
  - STATIC
```
public static final LogGammaLogMOMEstimator STATIC
```
    Static estimation using just the mean and variance.
- Constructor Detail
  - LogGammaLogMOMEstimator
```
private LogGammaLogMOMEstimator()
```
    Private constructor.
- Method Detail
  - estimateFromLogStatisticalMoments
```
public LogGammaDistribution estimateFromLogStatisticalMoments(StatisticalMoments mv,
                                                              double shift)
```
    Description copied from interface: LogMOMDistributionEstimator
    
    General form of the parameter estimation
    
    Specified by:
    
    estimateFromLogStatisticalMoments in interface LogMOMDistributionEstimator<LogGammaDistribution>
    
    Parameters:
    
    mv - Statistical moments
    
    shift - Shifting offset that was used
    
    Returns:
    
    Estimated distribution
  - getDistributionClass
```
public java.lang.Class<? super LogGammaDistribution> getDistributionClass()
```
    Description copied from interface: DistributionEstimator
    
    Get the class that is produced by the estimator.
    
    Specified by:
    
    getDistributionClass in interface DistributionEstimator<LogGammaDistribution>
    
    Returns:
    
    Distribution class
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object