de.lmu.ifi.dbs.elki.math.statistics.distribution.estimator

Class WeibullLMMEstimator

java.lang.Object

de.lmu.ifi.dbs.elki.math.statistics.distribution.estimator.WeibullLMMEstimator

All Implemented Interfaces:

DistributionEstimator<WeibullDistribution>, LMMDistributionEstimator<WeibullDistribution>

public class WeibullLMMEstimator
extends java.lang.Object
implements LMMDistributionEstimator<WeibullDistribution>

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

Since:

0.6.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	WeibullLMMEstimator.Parameterizer Parameterization class.

Field Summary

Fields

Modifier and Type	Field and Description
private static double	A0 Estimation constants
private static double	A1 Estimation constants
private static double	A2 Estimation constants
private static double	A3 Estimation constants
private static double	A4 Estimation constants
private static double	B1 Estimation constants
private static double	B2 Estimation constants
private static double	B3 Estimation constants
private static double	C1 Estimation constants
private static double	C2 Estimation constants
private static double	C3 Estimation constants
private static double	D1 Estimation constants
private static double	D2 Estimation constants
(package private) static int	MAXIT Maximum number of iterations.
static WeibullLMMEstimator	STATIC Static instance.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	WeibullLMMEstimator() Constructor.

Method Summary

Modifier and Type	Method and Description
WeibullDistribution	estimateFromLMoments(double[] xmom) Estimate from the L-Moments.
java.lang.Class<? super WeibullDistribution>	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 de.lmu.ifi.dbs.elki.math.statistics.distribution.estimator.LMMDistributionEstimator

estimate

Methods inherited from interface de.lmu.ifi.dbs.elki.math.statistics.distribution.estimator.DistributionEstimator

estimate

Field Detail

STATIC

public static final WeibullLMMEstimator STATIC

Static instance.

A0

private static final double A0

Estimation constants

See Also:

Constant Field Values

A1

private static final double A1

Estimation constants

See Also:

Constant Field Values

A2

private static final double A2

Estimation constants

See Also:

Constant Field Values

A3

private static final double A3

Estimation constants

See Also:

Constant Field Values

A4

private static final double A4

Estimation constants

See Also:

Constant Field Values

B1

private static final double B1

Estimation constants

See Also:

Constant Field Values

B2

private static final double B2

Estimation constants

See Also:

Constant Field Values

B3

private static final double B3

Estimation constants

See Also:

Constant Field Values

C1

private static final double C1

Estimation constants

See Also:

Constant Field Values

C2

private static final double C2

Estimation constants

See Also:

Constant Field Values

C3

private static final double C3

Estimation constants

See Also:

Constant Field Values

D1

private static final double D1

Estimation constants

See Also:

Constant Field Values

D2

private static final double D2

Estimation constants

See Also:

Constant Field Values

MAXIT

static int MAXIT

Maximum number of iterations.

Constructor Detail

WeibullLMMEstimator

private WeibullLMMEstimator()

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<WeibullDistribution>

Returns:

Moments needed.

estimateFromLMoments

public WeibullDistribution estimateFromLMoments(double[] xmom)

Description copied from interface: LMMDistributionEstimator

Estimate from the L-Moments.

Specified by:

estimateFromLMoments in interface LMMDistributionEstimator<WeibullDistribution>

Parameters:

xmom - L-Moments

Returns:

Distribution

getDistributionClass

public java.lang.Class<? super WeibullDistribution> getDistributionClass()

Description copied from interface: DistributionEstimator

Get the class that is produced by the estimator.

Specified by:

getDistributionClass in interface DistributionEstimator<WeibullDistribution>

Returns:

Distribution class

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object