moa.tasks

Class EvaluateOnlineRecommender

java.lang.Object

moa.AbstractMOAObject

moa.options.AbstractOptionHandler

moa.tasks.AbstractTask

moa.tasks.MainTask

moa.tasks.EvaluateOnlineRecommender

All Implemented Interfaces:

Serializable, MOAObject, OptionHandler, Task

public class EvaluateOnlineRecommender
extends MainTask

Test for evaluating a recommender by training and periodically testing on samples from a rating dataset. When finished, it will show the learning curve of the recommender rating predictor.

Parameters:

• d: dataset - the dataset to be used to train/test the rating predictor.
• f: sample frequency - the frequency in which a rating from the dataset will be used to test the model

Version:

$Revision: 7 $

Author:

Alex Catarineu (a.catarineu@gmail.com)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
ClassOption	datasetOption
ClassOption	ratingPredictorOption
IntOption	sampleFrequencyOption

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
EvaluateOnlineRecommender()

Method Summary

Methods

Modifier and Type	Method and Description
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

datasetOption

public ClassOption datasetOption

ratingPredictorOption

public ClassOption ratingPredictorOption

sampleFrequencyOption

public IntOption sampleFrequencyOption

Constructor Detail

EvaluateOnlineRecommender

public EvaluateOnlineRecommender()

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

public 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