Package moa.classifiers.core.driftdetection

Class ADWINChangeDetector

java.lang.Object

moa.AbstractMOAObject

moa.options.AbstractOptionHandler

moa.classifiers.core.driftdetection.AbstractChangeDetector

moa.classifiers.core.driftdetection.ADWINChangeDetector

All Implemented Interfaces:

Configurable, java.io.Serializable, ChangeDetector, MOAObject, OptionHandler

public class ADWINChangeDetector
extends AbstractChangeDetector

Drift detection method based in ADWIN. ADaptive sliding WINdow is a change detector and estimator. It keeps a variable-length window of recently seen items, with the property that the window has the maximal length statistically consistent with the hypothesis "there has been no change in the average value inside the window".

Version:

$Revision: 7 $

Author:

Albert Bifet (abifet at cs dot waikato dot ac dot nz)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected ADWIN	adwin
FloatOption	deltaAdwinOption

Fields inherited from class moa.classifiers.core.driftdetection.AbstractChangeDetector

delay, estimation, isChangeDetected, isInitialized, isWarningZone

Fields inherited from class moa.options.AbstractOptionHandler

config

Constructor Summary

Constructors

Constructor	Description
ADWINChangeDetector()

Method Summary

Modifier and Type	Method	Description
void	getDescription(java.lang.StringBuilder sb, int indent)	Returns a string representation of the model.
void	input(double inputValue)	Adding a numeric value to the change detector The output of the change detector is modified after the insertion of a new item inside.
protected void	prepareForUseImpl(TaskMonitor monitor, ObjectRepository repository)	This method describes the implementation of how to prepare this object for use.
void	resetLearning()	Resets this change detector.

Methods inherited from class moa.classifiers.core.driftdetection.AbstractChangeDetector

copy, getChange, getDelay, getEstimation, getOutput, getWarningZone

Methods inherited from class moa.AbstractMOAObject

copy, measureByteSize, measureByteSize, toString

Methods inherited from class moa.options.AbstractOptionHandler

getCLICreationString, getOptions, getPreparedClassOption, getPurposeString, prepareClassOptions, prepareForUse, prepareForUse

Methods inherited from interface moa.MOAObject

measureByteSize

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface moa.options.OptionHandler

getCLICreationString, getOptions, getPurposeString, prepareForUse, prepareForUse

Field Detail

adwin

protected ADWIN adwin

deltaAdwinOption

public FloatOption deltaAdwinOption

Constructor Detail

ADWINChangeDetector

public ADWINChangeDetector()

Method Detail

input

public void input(double inputValue)

Description copied from class: AbstractChangeDetector

Adding a numeric value to the change detector

The output of the change detector is modified after the insertion of a new item inside.

Specified by:

input in interface ChangeDetector

Specified by:

input in class AbstractChangeDetector

Parameters:

inputValue - the number to insert into the change detector

resetLearning

public void resetLearning()

Description copied from class: AbstractChangeDetector

Resets this change detector. It must be similar to starting a new change detector from scratch.

Specified by:

resetLearning in interface ChangeDetector

Overrides:

resetLearning in class AbstractChangeDetector

getDescription

public void getDescription(java.lang.StringBuilder sb,
                           int indent)

Description copied from class: AbstractChangeDetector

Returns a string representation of the model.

Specified by:

getDescription in interface ChangeDetector

Specified by:

getDescription in interface MOAObject

Specified by:

getDescription in class AbstractChangeDetector

Parameters:

sb - the stringbuilder to add the description

indent - the number of characters to indent

prepareForUseImpl

protected void prepareForUseImpl(TaskMonitor monitor,
                                 ObjectRepository repository)

Description copied from class: AbstractOptionHandler

This method describes the implementation of how to prepare this object for use. All classes that extends this class have to implement prepareForUseImpl and not prepareForUse since prepareForUse calls prepareForUseImpl.

Specified by:

prepareForUseImpl in class AbstractOptionHandler

Parameters:

monitor - the TaskMonitor to use

repository - the ObjectRepository to use