edu.udo.cs.yale.operator.features.weighting
Class GenericWekaAttributeWeighting

java.lang.Object
  edu.udo.cs.yale.operator.Operator
      edu.udo.cs.yale.operator.features.weighting.GenericWekaAttributeWeighting

All Implemented Interfaces:

ConfigurationListener, weka.core.TechnicalInformationHandler

public class GenericWekaAttributeWeighting
extends Operator
implements weka.core.TechnicalInformationHandler

Performs the AttributeEvaluator of Weka with the same name to determine a sort of attribute relevance. These relevance values build an instance of AttributeWeights. Therefore, they can be used by other operators which make use of such weights, like weight based selection or search heuristics which use attribute weights to speed up the search. See the Weka javadoc for further operator and parameter descriptions.

Version:

$Id: GenericWekaAttributeWeighting.java,v 1.10 2006/04/05 09:42:01 ingomierswa Exp $

Author:

Ingo Mierswa

Field Summary

static java.lang.String[]	WEKA_ATTRIBUTE_EVALUATORS
private java.util.List<ParameterType>	wekaParameters The list with the weka parameters.

Constructor Summary

GenericWekaAttributeWeighting(OperatorDescription description)

Method Summary

IOObject[]	apply() Implement this method in subclasses.
java.lang.Class[]	getInputClasses() Returns the classes that are needed as input.
java.lang.Class[]	getOutputClasses() Returns the classes that are guaranteed to be returned by apply() as additional output.
java.util.List<ParameterType>	getParameterTypes() Returns a list of ParameterTypes describing the parameters of this operator.
weka.core.TechnicalInformation	getTechnicalInformation()
private weka.attributeSelection.AttributeEvaluator	getWekaAttributeEvaluator(java.lang.String name, java.lang.String[] parameters) Returns the Weka attribute evaluator based on the subtype of this operator.

Methods inherited from class edu.udo.cs.yale.operator.Operator

addError, addValue, addWarning, apply, checkDeprecations, checkIO, checkProperties, clearErrorList, cloneOperator, createExperimentTree, createExperimentTree, createFromXML, createMarkedExperimentTree, delete, experimentFinished, experimentStarts, getAddOnlyAdditionalOutput, getApplyCount, getDeliveredOutputClasses, getDeprecationInfo, getDesiredInputClasses, getErrorList, getExperiment, getInnerOperatorsXML, getInput, getInput, getInput, getInputDescription, getIOContainerForInApplyLoopBreakpoint, getName, getNumberOfSteps, getOperatorClassName, getOperatorDescription, getParameter, getParameterAsBoolean, getParameterAsColor, getParameterAsDouble, getParameterAsFile, getParameterAsInt, getParameterAsString, getParameterList, getParameters, getParameterType, getParent, getStartTime, getStatus, getUserDescription, getValue, getValues, getXML, hasBreakpoint, hasBreakpoint, hasInput, inApplyLoop, isEnabled, isParameterSet, logMessage, performAdditionalChecks, register, remove, rename, resume, setBreakpoint, setEnabled, setExperiment, setInput, setListParameter, setOperatorParameters, setParameter, setParameters, setParent, setUserDescription, toString, writeXML

Methods inherited from class java.lang.Object

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

Field Detail

WEKA_ATTRIBUTE_EVALUATORS

public static final java.lang.String[] WEKA_ATTRIBUTE_EVALUATORS

wekaParameters

private java.util.List<ParameterType> wekaParameters

The list with the weka parameters.

Constructor Detail

GenericWekaAttributeWeighting

public GenericWekaAttributeWeighting(OperatorDescription description)

Method Detail

apply

public IOObject[] apply()
                 throws OperatorException

Description copied from class: Operator

Implement this method in subclasses.

Specified by:

apply in class Operator

Throws:

OperatorException

getOutputClasses

public java.lang.Class[] getOutputClasses()

Description copied from class: Operator

Returns the classes that are guaranteed to be returned by apply() as additional output. Please note that input object which should not be consumed must also be defined by this method (e.g. for preprocessing operators). The default behavior for input consumation is defined by Operator.getInputDescription(Class) and can be changed by overwriting this method. Objects which are not consumed must not be defined as additional output in this method. May be null or an empy array (no additional output is produced).

Specified by:

getOutputClasses in class Operator

getInputClasses

public java.lang.Class[] getInputClasses()

Description copied from class: Operator

Returns the classes that are needed as input. May be null or an empty (no desired input). As default, all delivered input objects are consumed and must be also delivered as output in both Operator.getOutputClasses() and Operator.apply() if this is necessary. This default behavior can be changed by overriding Operator.getInputDescription(Class). Subclasses which implement this method should not make use of parameters since this method is invoked by getParameterTypes(). Therefore, parameters are not fully available at this point of time and this might lead to exceptions. Please use InputDescriptions instead.

Specified by:

getInputClasses in class Operator

getWekaAttributeEvaluator

private weka.attributeSelection.AttributeEvaluator getWekaAttributeEvaluator(java.lang.String name,
                                                                             java.lang.String[] parameters)
                                                                      throws OperatorException

Returns the Weka attribute evaluator based on the subtype of this operator.

Throws:

OperatorException

getTechnicalInformation

public weka.core.TechnicalInformation getTechnicalInformation()

Specified by:

getTechnicalInformation in interface weka.core.TechnicalInformationHandler

getParameterTypes

public java.util.List<ParameterType> getParameterTypes()

Description copied from class: Operator

Returns a list of ParameterTypes describing the parameters of this operator. The default implementation returns an empty list if no input objects can be retained and special parameters for those input objects which can be prevented from being consumed.

Overrides:

getParameterTypes in class Operator