edu.udo.cs.miningmart.operator
Class ComputeSVMError

java.lang.Object
  edu.udo.cs.miningmart.operator.ExecutableOperator
      edu.udo.cs.miningmart.operator.EvaluateResults
          edu.udo.cs.miningmart.operator.ComputeSVMError

public class ComputeSVMError

extends EvaluateResults

This class computes an error for the SupportVectorMachine. It is based on the application of the operator SupportVectorMachineForRegression previously in the operator chain.

Version:

$Id: ComputeSVMError.java,v 1.6 2006/04/11 14:10:10 euler Exp $

Author:

Timm Euler

See Also:

SupportVectorMachineForRegression

Field Summary

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

generatedSQLDefinitions

Constructor Summary

ComputeSVMError()

Method Summary

double	computeResult(double[] actualvalue, double[] predictedvalue) Abstract method to be implemented by all subclasses.
void	createStatement(boolean lazy) Abstract method for generating an sql-statement.
Value	getEpsilon() Gets the epsilon.
Value	getLossFunctionNeg() Gets the lossFunctionNeg.
Value	getLossFunctionPos() Gets the lossFunctionPos.

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

compileStatement, estimateStatistics, getActualValueAttribute, getInputConcept, getPredictedValueAttribute, writeResults

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

ComputeSVMError

public ComputeSVMError()

Method Detail

computeResult

public double computeResult(double[] actualvalue,
                            double[] predictedvalue)
                     throws M4CompilerError

Description copied from class: EvaluateResults

Abstract method to be implemented by all subclasses. The values of two columns are compared to compute an error. The "true" values of a column as well as the learned/predicted ones are given. The result should be an error value of some description.

Specified by:

computeResult in class EvaluateResults

Parameters:

actualvalue - An array with the true values.

predictedvalue - An array with the predicted values.

Returns:

an error value

Throws:

M4CompilerError

See Also:

EvaluateResults.computeResult(double[], double[])

createStatement

public void createStatement(boolean lazy)
                     throws java.sql.SQLException,
                            M4CompilerError

Description copied from class: ExecutableOperator

Abstract method for generating an sql-statement. This method handles the process of generating an sql-statement for an operator. The implementation is done individually by every operator.

Overrides:

createStatement in class EvaluateResults

Throws:

java.sql.SQLException

M4CompilerError

See Also:

edu.udo.cs.miningmart.operator.Operator#createStatement

getEpsilon

public Value getEpsilon()
                 throws M4CompilerError

Gets the epsilon.

Returns:

Returns a Value

Throws:

M4CompilerError

getLossFunctionNeg

public Value getLossFunctionNeg()
                         throws M4CompilerError

Gets the lossFunctionNeg.

Returns:

Returns a Value

Throws:

M4CompilerError

getLossFunctionPos

public Value getLossFunctionPos()
                         throws M4CompilerError

Gets the lossFunctionPos.

Returns:

Returns a Value

Throws:

M4CompilerError