Package moa.classifiers.core.driftdetection

Class SeqDrift2ChangeDetector

java.lang.Object

moa.AbstractMOAObject

moa.options.AbstractOptionHandler

moa.classifiers.core.driftdetection.AbstractChangeDetector

moa.classifiers.core.driftdetection.SeqDrift2ChangeDetector

All Implemented Interfaces:

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

public class SeqDrift2ChangeDetector
extends AbstractChangeDetector

SeqDriftChangeDetector.java. This extends Abstract Change Detector as required by MOA. Pears, R., Sakthithasan, S., & Koh, Y. (2014). Detecting concept change in dynamic data streams. Machine Learning, 97(3), 259-293. doi:10.1007/s10994-013-5433-9

Version:

$Revision: 7 $

Author:

Sakthithasan Sripirakas sripirakas363 at yahoo dot com

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	SeqDrift2ChangeDetector.Block
class	SeqDrift2ChangeDetector.Repository
class	SeqDrift2ChangeDetector.Reservoir
class	SeqDrift2ChangeDetector.SeqDrift2	SeqDrift2 uses reservoir sampling to build a sequential change detection model that uses statistically sound guarantees defined using Bernstein Bound on false positive and false negative rates.

Field Summary

Fields

Modifier and Type	Field	Description
IntOption	blockSeqDrift2Option
FloatOption	deltaSeqDrift2Option
protected SeqDrift2ChangeDetector.SeqDrift2	seqdrift

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
SeqDrift2ChangeDetector()

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

seqdrift

protected SeqDrift2ChangeDetector.SeqDrift2 seqdrift

deltaSeqDrift2Option

public FloatOption deltaSeqDrift2Option

blockSeqDrift2Option

public IntOption blockSeqDrift2Option

Constructor Detail

SeqDrift2ChangeDetector

public SeqDrift2ChangeDetector()

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