Package elki.math.statistics.distribution.estimator

Class NormalLMMEstimator

java.lang.Object

elki.math.statistics.distribution.estimator.NormalLMMEstimator

All Implemented Interfaces:

DistributionEstimator<NormalDistribution>, LMMDistributionEstimator<NormalDistribution>

@Reference(authors="J. R. M. Hosking",
           title="Fortran routines for use with the method of L-moments Version 3.03",
           booktitle="IBM Research Technical Report",
           bibkey="tr/ibm/Hosking00")
public class NormalLMMEstimator
extends java.lang.Object
implements LMMDistributionEstimator<NormalDistribution>

Estimate the parameters of a normal distribution using the method of L-Moments (LMM).

Reference:

J. R. M. Hosking
Fortran routines for use with the method of L-moments Version 3.03
IBM Research.

Since:

0.6.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	NormalLMMEstimator.Par	Parameterization class.

Field Summary

Fields

Modifier and Type	Field	Description
static NormalLMMEstimator	STATIC	Static instance

Constructor Summary

Constructors

Modifier	Constructor	Description
private	NormalLMMEstimator()	Constructor.

Method Summary

Modifier and Type	Method	Description
NormalDistribution	estimateFromLMoments(double[] xmom)	Estimate from the L-Moments.
java.lang.Class<? super NormalDistribution>	getDistributionClass()	Get the class that is produced by the estimator.
int	getNumMoments()	The number of moments needed.
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.LMMDistributionEstimator

estimate

Field Detail

STATIC

public static final NormalLMMEstimator STATIC

Static instance

Constructor Detail

NormalLMMEstimator

private NormalLMMEstimator()

Constructor. Private: use static instance.

Method Detail

getNumMoments

public int getNumMoments()

Description copied from interface: LMMDistributionEstimator

The number of moments needed.

Specified by:

getNumMoments in interface LMMDistributionEstimator<NormalDistribution>

Returns:

Moments needed.

estimateFromLMoments

public NormalDistribution estimateFromLMoments(double[] xmom)

Description copied from interface: LMMDistributionEstimator

Estimate from the L-Moments.

Specified by:

estimateFromLMoments in interface LMMDistributionEstimator<NormalDistribution>

Parameters:

xmom - L-Moments

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