adams.flow.transformer
Class WekaSubsets

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

All Implemented Interfaces:

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

public class WekaSubsets
extends AbstractTransformer

Splits the dataset based on the unique values of the specified attribute: all rows with the same unique value form a subset.

Input/output:
- accepts:
weka.core.Instances
- generates:
weka.core.Instances

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: WekaSubsets
 

-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.
 

-index <java.lang.String> (property: index)
    The index of the attribute to use for splitting the dataset into subsets;
     An index is a number starting with 1; the following placeholders can be 
    used as well: first, second, third, last_2, last_1, last
    default: 1
 

Version:

$Revision: 5563 $

Author:

fracpete (fracpete at waikato dot ac dot nz)

See Also:

Serialized Form

Field Summary

protected Index	m_Index the attribute index to split on.
protected Vector<weka.core.Instances>	m_Queue the generated subsets.

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

WekaSubsets()

Method Summary

Class[]	accepts() Returns the class that the consumer accepts.
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.
Index	getIndex() Returns the index of the attribute to split on.
String	getQuickInfo() Returns a quick info about the actor, which will be displayed in the GUI.
String	globalInfo() Returns a string describing the object.
boolean	hasPendingOutput() Checks whether there is pending output to be collected after executing the flow item.
String	indexTipText() Returns the tip text for this property.
protected void	initialize() Initializes the members.
Token	output() Returns the generated token.
void	setIndex(Index value) Sets the index of the attribute to split on.
void	updateProvenance(ProvenanceContainer cont) Updates the provenance information in the provided container.
void	wrapUp() Cleans up after the execution has finished.

Methods inherited from class adams.flow.transformer.AbstractTransformer

backupState, execute, input, postExecute, reset, restoreState

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, isBackedUp, isExecuted, isFinished, isHeadless, isStopped, nameTipText, performSetUpChecks, preExecute, pruneBackup, 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

m_Index

protected Index m_Index

the attribute index to split on.

m_Queue

protected Vector<weka.core.Instances> m_Queue

the generated subsets.

Constructor Detail

WekaSubsets

public WekaSubsets()

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

initialize

protected void initialize()

Initializes the members.

Overrides:

initialize in class AbstractActor

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

setIndex

public void setIndex(Index value)

Sets the index of the attribute to split on.

Parameters:

value - the index

getIndex

public Index getIndex()

Returns the index of the attribute to split on.

Returns:

the index

indexTipText

public String indexTipText()

Returns the tip text for this property.

Returns:

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

accepts

public Class[] accepts()

Returns the class that the consumer accepts.

Returns:

the Class of objects that can be processed

generates

public Class[] generates()

Returns the class of objects that it generates.

Returns:

the Class of the generated tokens

doExecute

protected String doExecute()

Executes the flow item.

Specified by:

doExecute in class AbstractActor

Returns:

null if everything is fine, otherwise error message

hasPendingOutput

public boolean hasPendingOutput()

Checks whether there is pending output to be collected after executing the flow item.

Specified by:

hasPendingOutput in interface OutputProducer

Overrides:

hasPendingOutput in class AbstractTransformer

Returns:

true if there is pending output

output

public Token output()

Returns the generated token.

Specified by:

output in interface OutputProducer

Overrides:

output in class AbstractTransformer

Returns:

the generated token

updateProvenance

public void updateProvenance(ProvenanceContainer cont)

Updates the provenance information in the provided container.

Parameters:

cont - the provenance container to update

wrapUp

public void wrapUp()

Cleans up after the execution has finished.

Overrides:

wrapUp in class AbstractTransformer