edu.udo.cs.miningmart.operator
Class EvaluateResults

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

Direct Known Subclasses:

ComputeSVMError

public abstract class EvaluateResults
extends ExecutableOperator

This class is the superclass for evaluation operators. They do not have an output on the conceptual level, ie no output concept or output attribute. They may be used to evaluate a data mining operator. They compare the values of two columns.

Version:

$Id: EvaluateResults.java,v 1.10 2006/10/02 12:39:56 euler Exp $

Author:

Timm Euler

Field Summary

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

generatedSQLDefinitions

Constructor Summary

EvaluateResults()

Method Summary

void	compileStatement() Abstract method for compiling the generated sql-statement.
abstract double	computeResult(double[] actualvalue, double[] predicted) Abstract method to be implemented by all subclasses.
void	createStatement(boolean lazy) Abstract method for generating an sql-statement.
BaseAttribute	getActualValueAttribute() Gets the actualValueAttribute.
Concept	getInputConcept() Gets the input Concept.
BaseAttribute	getPredictedValueAttribute() Gets the predictedValueAttribute.
void	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, getParameterObjectsOfAllLoops, getSingleParameter, getSingleParameter, getStep, giveWarningForChangedInputData, 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

EvaluateResults

public EvaluateResults()

Method Detail

computeResult

public abstract double computeResult(double[] actualvalue,
                                     double[] predicted)
                              throws M4CompilerError

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.

Parameters:

actualvalue - An array with the true values.

predicted - An array with the predicted values.

Returns:

an error value

Throws:

M4CompilerError

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.

Specified by:

createStatement in class ExecutableOperator

Parameters:

lazy - If TRUE, run in lazy mode: create atmost one output ColumnSet

Throws:

java.sql.SQLException

M4CompilerError

See Also:

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

writeResults

public void writeResults()
                  throws java.sql.SQLException,
                         M4CompilerError

Throws:

java.sql.SQLException

M4CompilerError

See Also:

edu.udo.cs.miningmart.operator.ExecutableOperator#writeResults()

compileStatement

public void compileStatement()
                      throws java.sql.SQLException,
                             M4CompilerError

Description copied from class: ExecutableOperator

Abstract method for compiling the generated sql-statement. This method tests if the generated sql-statement is executable in the database. The implementation is done individually by every operator.

Specified by:

compileStatement in class ExecutableOperator

Throws:

java.sql.SQLException

M4CompilerError

See Also:

edu.udo.cs.miningmart.m4.ExecutableOperator#compileStatement()

getActualValueAttribute

public BaseAttribute getActualValueAttribute()
                                      throws M4CompilerError

Gets the actualValueAttribute.

Returns:

Returns a BaseAttribute

Throws:

M4CompilerError

getInputConcept

public Concept getInputConcept()
                        throws M4CompilerError

Gets the input Concept.

Returns:

Returns a Concept

Throws:

M4CompilerError

getPredictedValueAttribute

public BaseAttribute getPredictedValueAttribute()
                                         throws M4CompilerError

Gets the predictedValueAttribute.

Returns:

Returns a BaseAttribute

Throws:

M4CompilerError