com.rapidminer.operator.validation
Class FixedSplitValidationChain

java.lang.Object
  com.rapidminer.operator.Operator
      com.rapidminer.operator.OperatorChain
          com.rapidminer.operator.validation.ValidationChain
              com.rapidminer.operator.validation.FixedSplitValidationChain

All Implemented Interfaces:

ConfigurationListener, PreviewListener, ParameterHandler, LoggingHandler

public class FixedSplitValidationChain
extends ValidationChain

A FixedSplitValidationChain splits up the example set at a fixed point into a training and test set and evaluates the model (linear sampling). For non-linear sampling methods, i.e. the data is shuffled, the specified amounts of data are used as training and test set. The sum of both must be smaller than the input example set size.

At least either the training set size must be specified (rest is used for testing) or the test set size must be specified (rest is used for training). If both are specified, the rest is not used at all.

The first inner operator must accept an ExampleSet while the second must accept an ExampleSet and the output of the first (which in most cases is a Model) and must produce a PerformanceVector.

This validation operator provides several values which can be logged by means of a ProcessLogOperator. All performance estimation operators of RapidMiner provide access to the average values calculated during the estimation. Since the operator cannot ensure the names of the delivered criteria, the ProcessLog operator can access the values via the generic value names:

• performance: the value for the main criterion calculated by this validation operator
• performance1: the value of the first criterion of the performance vector calculated
• performance2: the value of the second criterion of the performance vector calculated
• performance3: the value of the third criterion of the performance vector calculated
• for the main criterion, also the variance and the standard deviation can be accessed where applicable.

Author:

Simon Fischer, Ingo Mierswa ingomierswa Exp $

Field Summary

static java.lang.String	PARAMETER_LOCAL_RANDOM_SEED
static java.lang.String	PARAMETER_SAMPLING_TYPE
static java.lang.String	PARAMETER_TEST_SET_SIZE
static java.lang.String	PARAMETER_TRAINING_SET_SIZE

Fields inherited from class com.rapidminer.operator.validation.ValidationChain

PARAMETER_CREATE_COMPLETE_MODEL

Constructor Summary

FixedSplitValidationChain(OperatorDescription description)

Method Summary

IOObject[]	estimatePerformance(ExampleSet inputSet) This is the main method of the validation chain and must be implemented to estimate a performance of inner operators on the given example set.
java.util.List<ParameterType>	getParameterTypes() Returns a list of ParameterTypes describing the parameters of this operator.

Methods inherited from class com.rapidminer.operator.validation.ValidationChain

apply, evaluate, evaluate, getInnerOperatorCondition, getInputClasses, getInputDescription, getLearner, getMaxNumberOfInnerOperators, getMinNumberOfInnerOperators, getOutputClasses, learn, setResult

Methods inherited from class com.rapidminer.operator.OperatorChain

addAddListener, addOperator, addOperator, checkDeprecations, checkIO, checkNumberOfInnerOperators, checkProperties, clearErrorList, cloneOperator, createExperimentTree, createProcessTree, getAllInnerOperators, getIndexOfOperator, getInnerOperatorForName, getInnerOperatorsXML, getNumberOfAllOperators, getNumberOfOperators, getOperator, getOperatorFromAll, getOperators, performAdditionalChecks, processFinished, processStarts, registerOperator, removeAddListener, removeOperator, shouldAddNonConsumedInput, shouldReturnInnerOutput, unregisterOperator

Methods inherited from class com.rapidminer.operator.Operator

addError, addValue, addWarning, apply, checkForStop, createExperimentTree, createFromXML, createMarkedExperimentTree, createMarkedProcessTree, createProcessTree, getAddOnlyAdditionalOutput, getApplyCount, getDeliveredOutputClasses, getDeprecationInfo, getDesiredInputClasses, getEncoding, getErrorList, getExperiment, getInput, getInput, getInput, getIOContainerForInApplyLoopBreakpoint, getIODescription, getLog, getName, getOperatorClassName, getOperatorDescription, getParameter, getParameterAsBoolean, getParameterAsColor, getParameterAsDouble, getParameterAsFile, getParameterAsFile, getParameterAsInputStream, getParameterAsInt, getParameterAsMatrix, getParameterAsString, getParameterList, getParameters, getParameterType, getParent, getProcess, getStartTime, getStatus, getUserDescription, getValue, getValues, getXML, hasBreakpoint, hasBreakpoint, hasInput, inApplyLoop, isDebugMode, isEnabled, isExpanded, isParallel, isParameterSet, log, logError, logNote, logWarning, register, remove, rename, resume, setApplyCount, setBreakpoint, setEnabled, setExpanded, setInput, setListParameter, setOperatorParameters, setParameter, setParameters, setParent, setUserDescription, toString, writeXML

Methods inherited from class java.lang.Object

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

Field Detail

PARAMETER_TRAINING_SET_SIZE

public static final java.lang.String PARAMETER_TRAINING_SET_SIZE

See Also:

Constant Field Values

PARAMETER_TEST_SET_SIZE

public static final java.lang.String PARAMETER_TEST_SET_SIZE

See Also:

Constant Field Values

PARAMETER_SAMPLING_TYPE

public static final java.lang.String PARAMETER_SAMPLING_TYPE

See Also:

Constant Field Values

PARAMETER_LOCAL_RANDOM_SEED

public static final java.lang.String PARAMETER_LOCAL_RANDOM_SEED

See Also:

Constant Field Values

Constructor Detail

FixedSplitValidationChain

public FixedSplitValidationChain(OperatorDescription description)

Method Detail

estimatePerformance

public IOObject[] estimatePerformance(ExampleSet inputSet)
                               throws OperatorException

Description copied from class: ValidationChain

This is the main method of the validation chain and must be implemented to estimate a performance of inner operators on the given example set. The implementation can make use of the provided helper methods in this class.

Specified by:

estimatePerformance in class ValidationChain

Throws:

OperatorException

getParameterTypes

public java.util.List<ParameterType> getParameterTypes()

Description copied from class: Operator

Returns a list of ParameterTypes describing the parameters of this operator. The default implementation returns an empty list if no input objects can be retained and special parameters for those input objects which can be prevented from being consumed.

Specified by:

getParameterTypes in interface ParameterHandler

Overrides:

getParameterTypes in class ValidationChain