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

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

All Implemented Interfaces:

ConfigurationListener

public class FastICA
extends Operator

This operator performs the independent componente analysis (ICA). Implementation of the FastICA-algorithm of Hyvaerinen und Oja. The operator outputs a FastICAModel. With the ModelApplier you can transform the features.

Version:

$Id: FastICA.java,v 1.7 2006/10/01 12:09:24 ingomierswa Exp $

Author:

Daniel Hakenjos

See Also:

FastICAModel

Field Summary

private int	algtyp
private static java.lang.String[]	ALGTYP
private double	alpha
private Attribute[]	attribute
private double[][]	data
private int	function
private static java.lang.String[]	FUNCTION
private static java.lang.Class[]	INPUT_CLASSES
private int	maxiteration
private double[]	mean
private int	nr_atts
private int	nr_components
private int	nr_samples
private static java.lang.Class[]	OUTPUT_CLASSES
private boolean	row_norm
private double	tolerance
private double[][]	w_init

Constructor Summary

FastICA(OperatorDescription description)

Method Summary

IOObject[]	apply() Implement this method in subclasses.
private Jama.Matrix	deflation(Jama.Matrix X)
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 Jama.Matrix	parallel(Jama.Matrix X)

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

INPUT_CLASSES

private static final java.lang.Class[] INPUT_CLASSES

OUTPUT_CLASSES

private static final java.lang.Class[] OUTPUT_CLASSES

ALGTYP

private static final java.lang.String[] ALGTYP

FUNCTION

private static final java.lang.String[] FUNCTION

algtyp

private int algtyp

function

private int function

nr_components

private int nr_components

tolerance

private double tolerance

alpha

private double alpha

row_norm

private boolean row_norm

maxiteration

private int maxiteration

nr_samples

private int nr_samples

nr_atts

private int nr_atts

attribute

private Attribute[] attribute

mean

private double[] mean

data

private double[][] data

w_init

private double[][] w_init

Constructor Detail

FastICA

public FastICA(OperatorDescription description)

Parameters:

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

deflation

private Jama.Matrix deflation(Jama.Matrix X)
                       throws OperatorException

Throws:

OperatorException

parallel

private Jama.Matrix parallel(Jama.Matrix X)
                      throws OperatorException

Throws:

OperatorException

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