com.rapidminer.operator.validation
Class WeightedBootstrappingValidation

java.lang.Object
  com.rapidminer.operator.Operator
      com.rapidminer.operator.OperatorChain
          com.rapidminer.operator.validation.ValidationChain
              com.rapidminer.operator.validation.AbstractBootstrappingValidation
                  com.rapidminer.operator.validation.WeightedBootstrappingValidation

All Implemented Interfaces:

ConfigurationListener, PreviewListener, ParameterHandler, LoggingHandler

public class WeightedBootstrappingValidation
extends AbstractBootstrappingValidation

This validation operator performs several bootstrapped samplings (sampling with replacement) on the input set and trains a model on these samples. The remaining samples, i.e. those which were not sampled, build a test set on which the model is evaluated. This process is repeated for the specified number of iterations after which the average performance is calculated.

The basic setup is the same as for the usual cross validation operator. The first inner operator must provide a model and the second a performance vector. Please note that this operator does not regard example weights, i.e. weights specified in a weight column.

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:

Ingo Mierswa

Field Summary

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

PARAMETER_AVERAGE_PERFORMANCES_ONLY, PARAMETER_LOCAL_RANDOM_SEED, PARAMETER_NUMBER_OF_VALIDATIONS, PARAMETER_SAMPLE_RATIO

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

PARAMETER_CREATE_COMPLETE_MODEL

Constructor Summary

WeightedBootstrappingValidation(OperatorDescription description)

Method Summary

protected int[]

createMapping(ExampleSet exampleSet, int size, java.util.Random random)

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

estimatePerformance, getParameterTypes

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

Constructor Detail

WeightedBootstrappingValidation

public WeightedBootstrappingValidation(OperatorDescription description)

Method Detail

createMapping

protected int[] createMapping(ExampleSet exampleSet,
                              int size,
                              java.util.Random random)
                       throws OperatorException

Specified by:

createMapping in class AbstractBootstrappingValidation

Throws:

OperatorException