com.rapidminer.operator.preprocessing.sampling
Class KennardStoneSampling

java.lang.Object
  com.rapidminer.operator.Operator
      com.rapidminer.operator.AbstractExampleSetProcessing
          com.rapidminer.operator.preprocessing.AbstractDataProcessing
              com.rapidminer.operator.preprocessing.sampling.AbstractSamplingOperator
                  com.rapidminer.operator.preprocessing.sampling.KennardStoneSampling

All Implemented Interfaces:

ConfigurationListener, PreviewListener, ParameterHandler, LoggingHandler

public class KennardStoneSampling
extends AbstractSamplingOperator

This operator performs a Kennard-Stone Sampling. This sampling Algorithm works as follows: First find the two points most separated in the training set. For each candidate point, find the smallest distance to any object already selected. Select that point for the training set which has the largest of these smallest distances As described above, this algorithm always gives the same result, due to the two starting points which are always the same. This implementation reduces number of iterations by holding a list with candidates of the largest smallest distances. The parameters controll the number of examples in the sample

Author:

Sebastian Land

Field Summary

static java.lang.String	PARAMETER_ABSOLUTE_SAMPLE
static java.lang.String	PARAMETER_SAMPLE_RATIO The parameter name for "The fraction of examples which should be sampled"
static java.lang.String	PARAMETER_SAMPLE_SIZE

Constructor Summary

KennardStoneSampling(OperatorDescription description)

Method Summary

ExampleSet	apply(ExampleSet exampleSet) Delegate for the apply method.
java.util.List<ParameterType>	getParameterTypes() Returns a list of ParameterTypes describing the parameters of this operator.

Methods inherited from class com.rapidminer.operator.AbstractExampleSetProcessing

apply, getInputClasses, getOutputClasses

Methods inherited from class com.rapidminer.operator.Operator

addError, addValue, addWarning, apply, checkDeprecations, checkForStop, checkIO, checkProperties, clearErrorList, cloneOperator, createExperimentTree, createExperimentTree, createFromXML, createMarkedExperimentTree, createMarkedProcessTree, createProcessTree, createProcessTree, getAddOnlyAdditionalOutput, getApplyCount, getDeliveredOutputClasses, getDeprecationInfo, getDesiredInputClasses, getEncoding, getErrorList, getExperiment, getInnerOperatorsXML, getInput, getInput, getInput, getInputDescription, 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, performAdditionalChecks, processFinished, processStarts, register, registerOperator, remove, rename, resume, setApplyCount, setBreakpoint, setEnabled, setExpanded, setInput, setListParameter, setOperatorParameters, setParameter, setParameters, setParent, setUserDescription, toString, unregisterOperator, writeXML

Methods inherited from class java.lang.Object

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

Field Detail

PARAMETER_SAMPLE_RATIO

public static final java.lang.String PARAMETER_SAMPLE_RATIO

The parameter name for "The fraction of examples which should be sampled"

See Also:

Constant Field Values

PARAMETER_ABSOLUTE_SAMPLE

public static final java.lang.String PARAMETER_ABSOLUTE_SAMPLE

See Also:

Constant Field Values

PARAMETER_SAMPLE_SIZE

public static final java.lang.String PARAMETER_SAMPLE_SIZE

See Also:

Constant Field Values

Constructor Detail

KennardStoneSampling

public KennardStoneSampling(OperatorDescription description)

Method Detail

apply

public ExampleSet apply(ExampleSet exampleSet)
                 throws OperatorException

Description copied from class: AbstractExampleSetProcessing

Delegate for the apply method. In most cases, the returned example set will be the same as the example set or a modified clone.

Specified by:

apply in class AbstractExampleSetProcessing

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 Operator