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

Class ExpGammaExpMOMEstimator

java.lang.Object

de.lmu.ifi.dbs.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 and Description
static class	ExpGammaExpMOMEstimator.Parameterizer Parameterization class.

Field Summary

Fields

Modifier and Type	Field and Description
static ExpGammaExpMOMEstimator	STATIC Static estimation using just the mean and variance.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ExpGammaExpMOMEstimator() Private constructor.

Method Summary

Modifier and Type	Method and 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 de.lmu.ifi.dbs.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