edu.udo.cs.miningmart.operator
Class EvaluateAdvantageOfTFIDFTransformation

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

public class EvaluateAdvantageOfTFIDFTransformation

extends ExecutableOperator

Version:

$Id: EvaluateAdvantageOfTFIDFTransformation.java,v 1.6 2006/04/11 14:10:12 euler Exp $

Author:

Hanna Koepcke

Field Summary

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

generatedSQLDefinitions

Constructor Summary

EvaluateAdvantageOfTFIDFTransformation()

Method Summary

void	compileStatement() Abstract method for compiling the generated sql-statement.
void	createStatement(boolean lazy) Abstract method for generating an sql-statement.
EstimatedStatistics	estimateStatistics(Step theStep) Abstract method for estimating statistics for a concept.
Concept	getInputConcept() Gets the input Concept.
BaseAttribute	getTheKey() Parameter getter.
protected Feature[]	getTheSelectedAttributes() Getter method for the parameter "TheSelectedAttributes".
BaseAttribute	getTheTimeStamp() Parameter getter.
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, 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

EvaluateAdvantageOfTFIDFTransformation

public EvaluateAdvantageOfTFIDFTransformation()

Method Detail

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

estimateStatistics

public EstimatedStatistics estimateStatistics(Step theStep)
                                       throws M4Exception

Description copied from class: ExecutableOperator

Abstract method for estimating statistics for a concept. The realisation of this method depends on the type of operator that is connected to the step that creates the concept whose statistics are to be estimated. Therefore the implementation is done in this class and its subclasses.

Specified by:

estimateStatistics in class ExecutableOperator

Parameters:

theStep - the step that creates the output concept whose statistics are to be estimated

Returns:

an EstimatedStatistics object, some of whose values may or may not be available, depending on whether they could be guessed or inferred.

Throws:

M4Exception

See Also:

ExecutableOperator.estimateStatistics(Step)

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:

ExecutableOperator.compileStatement()

writeResults

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

Throws:

java.sql.SQLException

M4CompilerError

See Also:

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

getInputConcept

public Concept getInputConcept()
                        throws M4CompilerError

Gets the input Concept.

Returns:

Returns a Concept

Throws:

M4CompilerError

getTheTimeStamp

public BaseAttribute getTheTimeStamp()
                              throws M4CompilerError

Parameter getter.

Throws:

M4CompilerError

getTheKey

public BaseAttribute getTheKey()
                        throws M4CompilerError

Parameter getter.

Throws:

M4CompilerError

getTheSelectedAttributes

protected Feature[] getTheSelectedAttributes()
                                      throws M4CompilerError

Getter method for the parameter "TheSelectedAttributes". This parameter specifies the set of features for which TFIDF should be computed.

Returns:

an array of Feature objects

Throws:

M4CompilerError