Package elki.math.statistics.distribution.estimator.meta

Class BestFitEstimator

java.lang.Object

elki.math.statistics.distribution.estimator.meta.BestFitEstimator

All Implemented Interfaces:

DistributionEstimator<Distribution>

public class BestFitEstimator
extends java.lang.Object
implements DistributionEstimator<Distribution>

A meta estimator that will try a number of (inexpensive) estimations, then choose whichever works best.

Since:

0.6.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

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

Field Summary

Fields

Modifier and Type	Field	Description
protected java.util.Collection<LMMDistributionEstimator<?>>	lmmests	L-Moment estimators.
private static Logging	LOG	Class logger.
protected java.util.Collection<LogMADDistributionEstimator<?>>	logmadests	Logspace Median average deviation from median estimators.
protected java.util.Collection<LogMOMDistributionEstimator<?>>	logmomests	Logspace Method of Moments estimators.
protected java.util.Collection<MADDistributionEstimator<?>>	madests	Median average deviation from median estimators.
protected java.util.Collection<MOMDistributionEstimator<?>>	momests	Mean and variance based estimators.
static BestFitEstimator	STATIC	Static instance.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	BestFitEstimator()	Constructor.

Method Summary

Modifier and Type	Method	Description
<A> Distribution	estimate(A data, NumberArrayAdapter<?,A> adapter)	General form of the parameter estimation
java.lang.Class<? super Distribution>	getDistributionClass()	Get the class that is produced by the estimator.
java.lang.String	toString()
private void	warnIfDebugging(java.lang.ArithmeticException e, DistributionEstimator<?> est)	Warn on arithmetic errors, if debug logging is enabled

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

Field Detail

LOG

private static final Logging LOG

Class logger.

STATIC

public static final BestFitEstimator STATIC

Static instance.

momests

protected java.util.Collection<MOMDistributionEstimator<?>> momests

Mean and variance based estimators.

madests

protected java.util.Collection<MADDistributionEstimator<?>> madests

Median average deviation from median estimators.

lmmests

protected java.util.Collection<LMMDistributionEstimator<?>> lmmests

L-Moment estimators.

logmomests

protected java.util.Collection<LogMOMDistributionEstimator<?>> logmomests

Logspace Method of Moments estimators.

logmadests

protected java.util.Collection<LogMADDistributionEstimator<?>> logmadests

Logspace Median average deviation from median estimators.

Constructor Detail

BestFitEstimator

protected BestFitEstimator()

Constructor. Use static instance instead!

Method Detail

estimate

public <A> Distribution estimate(A data,
                                 NumberArrayAdapter<?,A> adapter)

Description copied from interface: DistributionEstimator

General form of the parameter estimation

Specified by:

estimate in interface DistributionEstimator<Distribution>

Parameters:

data - Data set

adapter - Number array adapter

Returns:

Estimated distribution

warnIfDebugging

private void warnIfDebugging(java.lang.ArithmeticException e,
                             DistributionEstimator<?> est)

Warn on arithmetic errors, if debug logging is enabled

Parameters:

e - Error

est - Estimator

getDistributionClass

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

Description copied from interface: DistributionEstimator

Get the class that is produced by the estimator.

Specified by:

getDistributionClass in interface DistributionEstimator<Distribution>

Returns:

Distribution class

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object