moa.tasks

Class EvaluatePrequential

java.lang.Object

moa.AbstractMOAObject

moa.options.AbstractOptionHandler

moa.tasks.AbstractTask

moa.tasks.MainTask

moa.tasks.EvaluatePrequential

All Implemented Interfaces:

Serializable, MOAObject, OptionHandler, Task

public class EvaluatePrequential
extends MainTask

Task for evaluating a classifier on a stream by testing then training with each example in sequence.

Version:

$Revision: 7 $

Author:

Richard Kirkby (rkirkby@cs.waikato.ac.nz), Albert Bifet (abifet at cs dot waikato dot ac dot nz)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
FloatOption	alphaOption
FileOption	dumpFileOption
ClassOption	evaluatorOption
IntOption	instanceLimitOption
ClassOption	learnerOption
IntOption	memCheckFrequencyOption
FileOption	outputPredictionFileOption
IntOption	sampleFrequencyOption
ClassOption	streamOption
IntOption	timeLimitOption
IntOption	widthOption

Fields inherited from class moa.tasks.MainTask

INSTANCES_BETWEEN_MONITOR_UPDATES, outputFileOption

Fields inherited from class moa.options.AbstractOptionHandler

classOptionNamesToPreparedObjects, options

Constructor Summary

Constructors

Constructor and Description
EvaluatePrequential()

Method Summary

Methods

Modifier and Type	Method and Description
protected Object	doMainTask(TaskMonitor monitor, ObjectRepository repository) This method performs this task.
String	getPurposeString() Gets the purpose of this object
Class<?>	getTaskResultType() Gets the result type of this task.

Methods inherited from class moa.tasks.MainTask

doTaskImpl

Methods inherited from class moa.tasks.AbstractTask

doTask, doTask, getDescription, getTaskName, prepareForUseImpl

Methods inherited from class moa.options.AbstractOptionHandler

copy, discoverOptionsViaReflection, getCLICreationString, getOptions, getPreparedClassOption, getPreparedClassOption, prepareClassOptions, prepareForUse, prepareForUse

Methods inherited from class moa.AbstractMOAObject

copy, measureByteSize, measureByteSize, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface moa.MOAObject

copy, measureByteSize

Field Detail

learnerOption

public ClassOption learnerOption

streamOption

public ClassOption streamOption

evaluatorOption

public ClassOption evaluatorOption

instanceLimitOption

public IntOption instanceLimitOption

timeLimitOption

public IntOption timeLimitOption

sampleFrequencyOption

public IntOption sampleFrequencyOption

memCheckFrequencyOption

public IntOption memCheckFrequencyOption

dumpFileOption

public FileOption dumpFileOption

outputPredictionFileOption

public FileOption outputPredictionFileOption

widthOption

public IntOption widthOption

alphaOption

public FloatOption alphaOption

Constructor Detail

EvaluatePrequential

public EvaluatePrequential()

Method Detail

getPurposeString

public String getPurposeString()

Description copied from interface: OptionHandler

Gets the purpose of this object

Specified by:

getPurposeString in interface OptionHandler

Overrides:

getPurposeString in class AbstractOptionHandler

Returns:

the string with the purpose of this object

getTaskResultType

public Class<?> getTaskResultType()

Description copied from interface: Task

Gets the result type of this task. Tasks can return LearningCurve, LearningEvaluation, Classifier, String, Instances..

Returns:

a class object of the result of this task

doMainTask

protected Object doMainTask(TaskMonitor monitor,
                ObjectRepository repository)

Description copied from class: MainTask

This method performs this task. AbstractTask implements doTask, that uses doTaskImpl. MainTask implements doTaskImpl using doMainTask so its extensions only need to implement doMainTask.

Specified by:

doMainTask in class MainTask

Parameters:

monitor - the TaskMonitor to use

repository - the ObjectRepository to use

Returns:

an object with the result of this task