edu.udo.cs.miningmart.operator
Class AssignAverageValue

java.lang.Object
  extended byedu.udo.cs.miningmart.operator.ExecutableOperator
      extended byedu.udo.cs.miningmart.operator.FeatureConstruction
          extended byedu.udo.cs.miningmart.operator.MissingValues
              extended byedu.udo.cs.miningmart.operator.AssignAverageValue

public class AssignAverageValue
extends MissingValues

This operator takes the average of the values in the column that has missing values, and replaces missing values with this average. If the column type does not allow the computation of an average value the operator cannot be applied.

Version:
$Id: AssignAverageValue.java,v 1.4 2006/04/11 14:10:11 euler Exp $
Author:
Timm Euler

Constructor Summary
AssignAverageValue()
           
 
Method Summary
 java.lang.String generateValueForOp(Column columnWithMissingValues)
          The abstract method to be implemented by the subclasses.
 
Methods inherited from class edu.udo.cs.miningmart.operator.MissingValues
generateSQL
 
Methods inherited from class edu.udo.cs.miningmart.operator.FeatureConstruction
compileStatement, createStatement, estimateStatistics, execute, generateColumnForOp, getCurrentLoopNumber, getTheInputConcept, getTheOutputAttribute, getTheOutputAttribute, getTheTargetAttribute, getTheTargetAttribute, load, writeResults
 
Methods inherited from class edu.udo.cs.miningmart.operator.ExecutableOperator
autoPrint, checkConditions, doPrint, doPrint, 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, print, putM4ObjectToCache, showCreateStatement, storedProceduresAvailable
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

AssignAverageValue

public AssignAverageValue()
Method Detail

generateValueForOp

public java.lang.String generateValueForOp(Column columnWithMissingValues)
                                    throws M4CompilerError
Description copied from class: MissingValues
The abstract method to be implemented by the subclasses.

Specified by:
generateValueForOp in class MissingValues
Parameters:
columnWithMissingValues - The Column which has some missing values.
Returns:
A String with an SQL definition which is used to replace the missing values of the given column. It must include quotes if necessary.
Throws:
M4CompilerError - A simple exception object with an error message.
See Also:
miningmart.operator.MissingValues#generateValueForOp(Column)


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