adams.flow.transformer
Class MOAClassifier

java.lang.Object
  adams.core.ConsoleObject
      adams.core.option.AbstractOptionHandler
          adams.flow.core.AbstractActor
              adams.flow.transformer.AbstractTransformer
                  adams.flow.transformer.MOAClassifier

All Implemented Interfaces:

AdditionalInformationHandler, CleanUpHandler, Debuggable, DebugOutputHandler, Destroyable, OptionHandler, QuickInfoSupporter, ShallowCopySupporter<AbstractActor>, SizeOfHandler, Stoppable, VariableChangeListener, ErrorHandler, InputConsumer, OutputProducer, Serializable, Comparable

public class MOAClassifier
extends AbstractTransformer

Trains a MOA classifier based on the incoming data.

Input/output:
- accepts:
weka.core.Instance
adams.flow.core.Unknown
- generates:
adams.flow.container.ModelContainer
moa.classifiers.Classifier

Valid options are:

-D <int> (property: debugLevel)
    The greater the number the more additional info the scheme may output to
    the console (0 = off).
    default: 0
    minimum: 0
 

-name <java.lang.String> (property: name)
    The name of the actor.
    default: MOAClassifier
 

-annotation <adams.core.base.BaseText> (property: annotations)
    The annotations to attach to this actor.
    default:
 

-skip (property: skip)
    If set to true, transformation is skipped and the input token is just forwarded
    as it is.
 

-stop-flow-on-error (property: stopFlowOnError)
    If set to true, the flow gets stopped in case this actor encounters an error;
     useful for critical actors.
 

-classifier <moa.options.ClassOption> (property: classifier)
    The MOA classifier to train on the input data and outputs the built classifier
    alongside the training header (in a model container).
    If the incoming token does not encapsulate an weka.core.Instance, then only
    a new instance of the classifier is sent around.
    default: moa.classifiers.DecisionStump
 

-output-interval <int> (property: outputInterval)
    The number of tokens to wait before forwarding the trainined classifier.
    default: 1000
    minimum: 1
 

Version:

$Revision: 4584 $

Author:

fracpete (fracpete at waikato dot ac dot nz)

See Also:

Serialized Form

Field Summary

static String	BACKUP_CLASSIFIER the key for storing the current classifier in the backup.
protected moa.classifiers.Classifier	m_ActualClassifier the actual classifier to use.
protected moa.options.ClassOption	m_Classifier the MOA classifier.
protected int	m_Count the current count of tokens that have passed through this actor.
protected int	m_OutputInterval the output interval.

Fields inherited from class adams.flow.transformer.AbstractTransformer

BACKUP_INPUT, BACKUP_OUTPUT, m_InputToken, m_OutputToken

Fields inherited from class adams.flow.core.AbstractActor

FILE_EXTENSION, FILE_EXTENSION_GZ, m_Annotations, m_BackupState, m_DetectedObjectVariables, m_DetectedVariables, m_ErrorHandler, m_Executed, m_FullName, m_Headless, m_Name, m_Parent, m_Root, m_Self, m_Skip, m_StopFlowOnError, m_StopMessage, m_Stopped, m_StorageHandler, m_VariablesUpdated

Fields inherited from class adams.core.option.AbstractOptionHandler

m_DebugLevel, m_OptionManager

Constructor Summary

MOAClassifier()

Method Summary

Class[]	accepts() Returns the class that the consumer accepts.
protected Hashtable<String,Object>	backupState() Backs up the current state of the actor before update the variables.
String	classifierTipText() Returns the tip text for this property.
void	defineOptions() Adds options to the internal list of options.
protected String	doExecute() Executes the flow item.
Class[]	generates() Returns the class of objects that it generates.
moa.options.ClassOption	getClassifier() Returns the classifier in use.
protected moa.classifiers.Classifier	getCurrentClassifier() Returns the current classifier, based on the class option.
protected moa.classifiers.Classifier	getDefaultClassifier() Returns the default classifier.
protected moa.options.ClassOption	getDefaultOption() Returns the default class option.
int	getOutputInterval() Returns the number of tokens after which to evaluate the classifier.
String	getQuickInfo() Returns a quick info about the actor, which will be displayed in the GUI.
String	globalInfo() Returns a string describing the object.
String	outputIntervalTipText() Returns the tip text for this property.
protected void	pruneBackup() Removes entries from the backup.
protected void	reset() Initializes the members.
protected void	restoreState(Hashtable<String,Object> state) Restores the state of the actor before the variables got updated.
void	setClassifier(moa.options.ClassOption value) Sets the classifier to use.
void	setOutputInterval(int value) Sets the number of tokens after which to evaluate the classifier.
void	wrapUp() Cleans up after the execution has finished.

Methods inherited from class adams.flow.transformer.AbstractTransformer

execute, hasPendingOutput, input, output, postExecute

Methods inherited from class adams.flow.core.AbstractActor

annotationsTipText, canInspectOptions, canPerformSetUpCheck, cleanUp, compareTo, debug, destroy, equals, findVariables, findVariables, findVariables, forceVariables, forCommandLine, forName, getAdditionalInformation, getAnnotations, getDefaultName, getDetectedVariables, getErrorHandler, getFlowActors, getFullName, getName, getNextSibling, getParent, getPreviousSibling, getRoot, getSkip, getStopFlowOnError, getStopMessage, getStorageHandler, getVariables, handleError, hasErrorHandler, hasStopMessage, index, initialize, isBackedUp, isExecuted, isFinished, isHeadless, isStopped, nameTipText, performSetUpChecks, preExecute, pruneBackup, setAnnotations, setErrorHandler, setHeadless, setName, setParent, setSkip, setStopFlowOnError, setUp, setVariables, shallowCopy, shallowCopy, sizeOf, skipTipText, stopExecution, stopExecution, stopFlowOnErrorTipText, updateDetectedVariables, updatePrefix, updateVariables, variableChanged

Methods inherited from class adams.core.option.AbstractOptionHandler

cleanUpOptions, debug, debugLevelTipText, finishInit, getDebugLevel, getOptionManager, isDebugOn, newOptionManager, setDebugLevel, toCommandLine, toString

Methods inherited from class adams.core.ConsoleObject

getDebugging, getSystemErr, getSystemOut

Methods inherited from class java.lang.Object

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

Field Detail

BACKUP_CLASSIFIER

public static final String BACKUP_CLASSIFIER

the key for storing the current classifier in the backup.

See Also:

Constant Field Values

m_Classifier

protected moa.options.ClassOption m_Classifier

the MOA classifier.

m_ActualClassifier

protected moa.classifiers.Classifier m_ActualClassifier

the actual classifier to use.

m_OutputInterval

protected int m_OutputInterval

the output interval.

m_Count

protected int m_Count

the current count of tokens that have passed through this actor.

Constructor Detail

MOAClassifier

public MOAClassifier()

Method Detail

globalInfo

public String globalInfo()

Returns a string describing the object.

Specified by:

globalInfo in class AbstractOptionHandler

Returns:

a description suitable for displaying in the gui

defineOptions

public void defineOptions()

Adds options to the internal list of options.

Specified by:

defineOptions in interface OptionHandler

Overrides:

defineOptions in class AbstractActor

reset

protected void reset()

Initializes the members.

Overrides:

reset in class AbstractTransformer

getDefaultClassifier

protected moa.classifiers.Classifier getDefaultClassifier()

Returns the default classifier.

Returns:

the classifier

getDefaultOption

protected moa.options.ClassOption getDefaultOption()

Returns the default class option.

Returns:

the option

setClassifier

public void setClassifier(moa.options.ClassOption value)

Sets the classifier to use.

Parameters:

value - the classifier

getClassifier

public moa.options.ClassOption getClassifier()

Returns the classifier in use.

Returns:

the classifier

classifierTipText

public String classifierTipText()

Returns the tip text for this property.

Returns:

tip text for this property suitable for displaying in the GUI or for listing the options.

getCurrentClassifier

protected moa.classifiers.Classifier getCurrentClassifier()

Returns the current classifier, based on the class option.

Returns:

the classifier

See Also:

getClassifier()

setOutputInterval

public void setOutputInterval(int value)

Sets the number of tokens after which to evaluate the classifier.

Parameters:

value - the interval

getOutputInterval

public int getOutputInterval()

Returns the number of tokens after which to evaluate the classifier.

Returns:

the interval

outputIntervalTipText

public String outputIntervalTipText()

Returns the tip text for this property.

Returns:

tip text for this property suitable for displaying in the GUI or for listing the options.

getQuickInfo

public String getQuickInfo()

Returns a quick info about the actor, which will be displayed in the GUI.

Specified by:

getQuickInfo in interface QuickInfoSupporter

Overrides:

getQuickInfo in class AbstractActor

Returns:

null if no info available, otherwise short string

pruneBackup

protected void pruneBackup()

Removes entries from the backup.

Overrides:

pruneBackup in class AbstractActor

backupState

protected Hashtable<String,Object> backupState()

Backs up the current state of the actor before update the variables.

Overrides:

backupState in class AbstractTransformer

Returns:

the backup

restoreState

protected void restoreState(Hashtable<String,Object> state)

Restores the state of the actor before the variables got updated.

Overrides:

restoreState in class AbstractTransformer

Parameters:

state - the backup of the state to restore from

accepts

public Class[] accepts()

Returns the class that the consumer accepts.

Returns:

weka.core.Instance.class, adams.flow.core.Unknown.class

generates

public Class[] generates()

Returns the class of objects that it generates.

Returns:

adams.flow.container.ModelContainer.class, moa.classifiers.Classifier.class

doExecute

protected String doExecute()

Executes the flow item.

Specified by:

doExecute in class AbstractActor

Returns:

null if everything is fine, otherwise error message

wrapUp

public void wrapUp()

Cleans up after the execution has finished.

Overrides:

wrapUp in class AbstractTransformer