com.rapidminer.operator.visualization.dependencies
Class MutualInformationMatrixOperator

java.lang.Object
  com.rapidminer.tools.AbstractObservable<Operator>
      com.rapidminer.operator.Operator
          com.rapidminer.operator.visualization.dependencies.AbstractPairwiseMatrixOperator
              com.rapidminer.operator.visualization.dependencies.MutualInformationMatrixOperator

All Implemented Interfaces:

ConfigurationListener, PreviewListener, ResourceConsumer, ParameterHandler, LoggingHandler, Observable<Operator>

public class MutualInformationMatrixOperator
extends AbstractPairwiseMatrixOperator

This operator calculates the mutual information matrix between all attributes of the input example set. This operator produces a dependency matrix which can be displayed to the user in the result tab.

Please note that this simple implementation performs a data scan for each attribute combination and might therefore take some time for non-memory example tables.

Author:

Ingo Mierswa

Constructor Summary

MutualInformationMatrixOperator(OperatorDescription description)

Method Summary

java.lang.String	getMatrixName()
double	getMatrixValue(ExampleSet exampleSet, Attribute firstAttribute, Attribute secondAttribute) Calculates the mutual information for both attributes.
java.util.List<ParameterType>	getParameterTypes() Returns a list of ParameterTypes describing the parameters of this operator.
protected ExampleSet	performPreprocessing(ExampleSet eSet) This preprocessing discretizes the input example set by a view.

Methods inherited from class com.rapidminer.operator.visualization.dependencies.AbstractPairwiseMatrixOperator

doWork

Methods inherited from class com.rapidminer.operator.Operator

acceptsInput, addError, addError, addValue, addWarning, apply, apply, assumePreconditionsSatisfied, checkAll, checkAllExcludingMetaData, checkDeprecations, checkForStop, checkIO, checkProperties, clear, clearErrorList, cloneOperator, collectErrors, createExperimentTree, createExperimentTree, createFromXML, createFromXML, createFromXML, createMarkedExperimentTree, createMarkedProcessTree, createProcessTree, createProcessTree, disconnectPorts, execute, fireUpdate, freeMemory, getAddOnlyAdditionalOutput, getApplyCount, getCompatibilityLevel, getDeliveredOutputClasses, getDeprecationInfo, getDesiredInputClasses, getDOMRepresentation, getEncoding, getErrorList, getExecutionUnit, getExperiment, getIncompatibleVersionChanges, getInput, getInput, getInput, getInputClasses, getInputDescription, getInputPorts, getIODescription, getLog, getLogger, getName, getNumberOfBreakpoints, getOperatorClassName, getOperatorDescription, getOutputClasses, getOutputPorts, getParameter, getParameterAsBoolean, getParameterAsChar, getParameterAsColor, getParameterAsDouble, getParameterAsFile, getParameterAsFile, getParameterAsInputStream, getParameterAsInt, getParameterAsMatrix, getParameterAsRepositoryLocation, getParameterAsString, getParameterHandler, getParameterList, getParameters, getParameterTupel, getParameterType, getParent, getPortOwner, getProcess, getResourceConsumptionEstimator, getRoot, getStartTime, getTransformer, getUserDescription, getValue, getValues, getXML, getXML, getXML, hasBreakpoint, hasBreakpoint, hasInput, inApplyLoop, isDebugMode, isDirty, isEnabled, isExpanded, isParallel, isParameterSet, isRunning, log, log, logError, logNote, logWarning, lookupOperator, makeDirty, makeDirtyOnUpdate, notifyRenaming, performAdditionalChecks, preAutoWire, processFinished, processStarts, producesOutput, propagateDirtyness, register, registerOperator, remove, removeAndKeepConnections, rename, resume, setBreakpoint, setCompatibilityLevel, setEnabled, setEnclosingProcess, setExpanded, setInput, setListParameter, setPairParameter, setParameter, setParameters, setUserDescription, shouldAutoConnect, shouldAutoConnect, shouldStopStandaloneExecution, toString, transformMetaData, unregisterOperator, updateExecutionOrder, walk, writeXML, writeXML

Methods inherited from class com.rapidminer.tools.AbstractObservable

addObserver, addObserverAsFirst, fireUpdate, removeObserver

Methods inherited from class java.lang.Object

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

Constructor Detail

MutualInformationMatrixOperator

public MutualInformationMatrixOperator(OperatorDescription description)

Method Detail

performPreprocessing

protected ExampleSet performPreprocessing(ExampleSet eSet)
                                   throws OperatorException

This preprocessing discretizes the input example set by a view.

Overrides:

performPreprocessing in class AbstractPairwiseMatrixOperator

Throws:

OperatorException

getMatrixName

public java.lang.String getMatrixName()

Specified by:

getMatrixName in class AbstractPairwiseMatrixOperator

getMatrixValue

public double getMatrixValue(ExampleSet exampleSet,
                             Attribute firstAttribute,
                             Attribute secondAttribute)

Calculates the mutual information for both attributes.

Specified by:

getMatrixValue in class AbstractPairwiseMatrixOperator

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. ATTENTION! This will create new parameterTypes. For calling already existing parameter types use getParameters().getParameterTypes();

Specified by:

getParameterTypes in interface ParameterHandler

Overrides:

getParameterTypes in class Operator