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

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

All Implemented Interfaces:

DistributionEstimator<NormalDistribution>, MeanVarianceDistributionEstimator<NormalDistribution>, MOMDistributionEstimator<NormalDistribution>
```
public class NormalMOMEstimator
extends java.lang.Object
implements MeanVarianceDistributionEstimator<NormalDistribution>
```
Naive maximum-likelihood estimations for the normal distribution using mean and sample variance. While this is the most commonly used estimator, it is not very robust against extreme values.

Since:

0.6.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class NormalMOMEstimator.Par
Parameterization class.

Field Summary

Fields
Modifier and Type Field Description

static NormalMOMEstimator STATIC
Static estimator, using mean and variance.

Constructor Summary

Constructors
Modifier Constructor Description

private NormalMOMEstimator()
Private constructor, use static instance!

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`NormalDistribution`	`estimateFromMeanVariance(MeanVariance mv)`	Estimate the distribution from mean and variance.
`java.lang.Class<? super NormalDistribution>`	`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.MeanVarianceDistributionEstimator
estimate, estimateFromStatisticalMoments

- Field Detail
  - STATIC
```
public static final NormalMOMEstimator STATIC
```
    Static estimator, using mean and variance.
- Constructor Detail
  - NormalMOMEstimator
```
private NormalMOMEstimator()
```
    Private constructor, use static instance!
- Method Detail
  - estimateFromMeanVariance
```
public NormalDistribution estimateFromMeanVariance(MeanVariance mv)
```
    Description copied from interface: MeanVarianceDistributionEstimator
    
    Estimate the distribution from mean and variance.
    
    Specified by:
    
    estimateFromMeanVariance in interface MeanVarianceDistributionEstimator<NormalDistribution>
    
    Parameters:
    
    mv - Mean and variance.
    
    Returns:
    
    Distribution
  - getDistributionClass
```
public java.lang.Class<? super NormalDistribution> getDistributionClass()
```
    Description copied from interface: DistributionEstimator
    
    Get the class that is produced by the estimator.
    
    Specified by:
    
    getDistributionClass in interface DistributionEstimator<NormalDistribution>
    
    Returns:
    
    Distribution class
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object