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

Class BestFitEstimator

java.lang.Object

de.lmu.ifi.dbs.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 and Description
private static class	BestFitEstimator.BestFit Class to track the best fit.
static class	BestFitEstimator.Parameterizer Parameterization class.

Field Summary

Fields

Modifier and Type	Field and 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 and Description
protected	BestFitEstimator() Constructor.

Method Summary

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