edu.udo.cs.yale.operator.features.transformation
Class SOMDimensionalityReduction

java.lang.Object
  edu.udo.cs.yale.operator.Operator
      edu.udo.cs.yale.operator.features.transformation.SOMDimensionalityReduction

All Implemented Interfaces:

ConfigurationListener

public class SOMDimensionalityReduction
extends Operator

This operator performs a dimensionality reduction based on a SOM (Self Organizing Map, aka Kohonen net).

Version:

$Id: SOMDimensionalityReduction.java,v 1.5 2006/10/01 12:09:24 ingomierswa Exp $

Author:

Sebastian Land, Ingo Mierswa

Field Summary

private KohonenNet

net

Constructor Summary

SOMDimensionalityReduction(OperatorDescription description)

Method Summary

IOObject[]	apply() Implement this method in subclasses.
private double[]	getDoubleArrayFromExample(Example example)
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.
private void	prepareSOM(ExampleSet exampleSet, int netDimensions, int netSize, int trainingRounds, double learningRateStart, double learningRateEnd, double adaptionRadiusStart, double adaptionRadiusEnd)

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

net

private KohonenNet net

Constructor Detail

SOMDimensionalityReduction

public SOMDimensionalityReduction(OperatorDescription description)

Method Detail

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

apply

public IOObject[] apply()
                 throws OperatorException

Description copied from class: Operator

Implement this method in subclasses.

Specified by:

apply in class Operator

Throws:

OperatorException

prepareSOM

private void prepareSOM(ExampleSet exampleSet,
                        int netDimensions,
                        int netSize,
                        int trainingRounds,
                        double learningRateStart,
                        double learningRateEnd,
                        double adaptionRadiusStart,
                        double adaptionRadiusEnd)

getDoubleArrayFromExample

private double[] getDoubleArrayFromExample(Example example)

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