edu.udo.cs.miningmart.operator
Class FeatureSelectionWithSVM

java.lang.Object
  edu.udo.cs.miningmart.operator.ExecutableOperator
      edu.udo.cs.miningmart.operator.ConceptOperator
          edu.udo.cs.miningmart.operator.SingleCSOperator
              edu.udo.cs.miningmart.operator.FeatureSelection
                  edu.udo.cs.miningmart.operator.FeatureSelectionWithSVM

public class FeatureSelectionWithSVM

extends FeatureSelection

This operator uses the SVM algorithm mySVM/db, which estimates the generalisation performance of an SVM on different feature subsets, to choose the best feature subset.

Version:

$Id: FeatureSelectionWithSVM.java,v 1.5 2006/04/11 14:10:11 euler Exp $

Author:

Timm Euler

Field Summary

Fields inherited from class edu.udo.cs.miningmart.operator.FeatureSelection

mySelectedFeatures

Fields inherited from class edu.udo.cs.miningmart.operator.ExecutableOperator

generatedSQLDefinitions

Constructor Summary

FeatureSelectionWithSVM()

Method Summary

protected java.util.Collection	computeListOfAttributes(Feature[] theSuperset) Abstract method to be implemented by all subclasses.
protected java.lang.String	getDatabaseSchema()

Methods inherited from class edu.udo.cs.miningmart.operator.FeatureSelection

generateSQLDefinition, getTheAttributes, getTypeOfNewColumnSet, mustCopyFeature, occursIn, occursIn

Methods inherited from class edu.udo.cs.miningmart.operator.SingleCSOperator

generateColumnSetsForOp, generateSQLDefinition, getNewCSName, getTypeOfNewColumnSet

Methods inherited from class edu.udo.cs.miningmart.operator.ConceptOperator

compileStatement, createMetadata, createMetadataForOneBA, createSingleColumnSet, createStatement, estimateStatistics, generateColumns, getInputConcept, getNewCSName, getOutputConcept, getStringForSelection, setNewCSMultiStepBranch

Methods inherited from class edu.udo.cs.miningmart.operator.ExecutableOperator

autoPrint, checkConditions, doPrint, doPrint, execute, executeBusinessSingleValueSqlRead, executeBusinessSingleValueSqlReadL, executeBusinessSqlRead, executeBusinessSqlWrite, executeM4SingleValueSqlRead, executeM4SingleValueSqlReadL, executeM4SqlRead, executeM4SqlWrite, getArtificalColumnName, getBusinessDbms, getHighestLoopNr, getM4Db, getM4Dbms, getM4ObjectFromCache, getName, getNextM4SequenceValue, getNumberOfLoops, getOperator, getOpParamsIterator, getParameter, getParameter, getSingleParameter, getSingleParameter, getStep, handleAssertions, isDeselectedParameter, isLoopable, isManual, isStepable, load, print, putM4ObjectToCache, showCreateStatement, storedProceduresAvailable

Methods inherited from class java.lang.Object

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

Constructor Detail

FeatureSelectionWithSVM

public FeatureSelectionWithSVM()

Method Detail

computeListOfAttributes

protected java.util.Collection computeListOfAttributes(Feature[] theSuperset)
                                                throws M4CompilerError

Description copied from class: FeatureSelection

Abstract method to be implemented by all subclasses.

Specified by:

computeListOfAttributes in class FeatureSelection

Parameters:

theSuperset - An array of Feature objects to which the selection is to be applied

Returns:

the selected Features as a Collection

Throws:

M4CompilerError

See Also:

edu.udo.cs.miningmart.m4.core.operator.FeatureSelection#computeListOfAttributes()

getDatabaseSchema

protected java.lang.String getDatabaseSchema()
                                      throws M4CompilerError

Throws:

M4CompilerError