edu.udo.cs.yale.operator.learner.weka
Class GenericWekaAssociationLearner

java.lang.Object
  edu.udo.cs.yale.operator.Operator
      edu.udo.cs.yale.operator.learner.weka.GenericWekaAssociationLearner

All Implemented Interfaces:

ConfigurationListener, weka.core.TechnicalInformationHandler

public class GenericWekaAssociationLearner
extends Operator
implements weka.core.TechnicalInformationHandler

Performs the Weka association rule learner with the same name. The operator returns a result object containing the rules found by the association learner. In contrast to models generated by normal learners, the association rules cannot be applied to an example set. Hence, there is no way to evaluate the performance of association rules yet. See the Weka javadoc for further operator and parameter descriptions.

Version:

$Id: GenericWekaAssociationLearner.java,v 1.17 2006/04/05 09:42:01 ingomierswa Exp $

Author:

Ingo Mierswa

Field Summary

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

Constructor Summary

GenericWekaAssociationLearner(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.associations.Associator	getWekaAssociator(java.lang.String name, java.lang.String[] parameters) Returns the Weka associator 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_ASSOCIATORS

public static final java.lang.String[] WEKA_ASSOCIATORS

wekaParameters

private java.util.List<ParameterType> wekaParameters

The list with the weka parameters.

Constructor Detail

GenericWekaAssociationLearner

public GenericWekaAssociationLearner(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

getWekaAssociator

private weka.associations.Associator getWekaAssociator(java.lang.String name,
                                                       java.lang.String[] parameters)
                                                throws OperatorException

Returns the Weka associator based on the subtype of this operator.

Throws:

OperatorException

getTechnicalInformation

public weka.core.TechnicalInformation getTechnicalInformation()

Specified by:

getTechnicalInformation in interface weka.core.TechnicalInformationHandler

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

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

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