com.rapidminer.operator.preprocessing.discretization
Class UserBasedDiscretization

java.lang.Object
  com.rapidminer.operator.Operator
      com.rapidminer.operator.preprocessing.PreprocessingOperator
          com.rapidminer.operator.preprocessing.discretization.UserBasedDiscretization

All Implemented Interfaces:

ConfigurationListener, PreviewListener, ParameterHandler, LoggingHandler

public class UserBasedDiscretization
extends PreprocessingOperator

This operator discretizes a numerical attribute to either a nominal or an ordinal attribute. The numerical values are mapped to the classes according to the thresholds specified by the user. The user can define the classes by specifying the upper limits of each class. The lower limit of the next class is automatically specified as the upper limit of the previous one. A parameter defines to which adjacent class values that are equal to the given limits should be mapped. If a '?' is given as class value the according numerical values are mapped to unknown values in the resulting attribute. Please note, that the last value always has to be equal to "Infinity". Otherwise values greater than the highest specified value could not be assigned.

Author:

Sebastian Land

Field Summary

static int	ATTRIBUTE_TYPE_NOMINAL
static int	ATTRIBUTE_TYPE_ORDINAL
static java.lang.String[]	attributeTypeStrings
static java.lang.String	PARAMETER_ATTRIBUTE_TYPE The parameter name for "Attribute type of the discretized attribute.
static java.lang.String	PARAMETER_RANGE_NAMES The parameter name for "Defines the classes and the upper limits of each class.
static java.lang.String	PARAMETER_UPPER_LIMIT The parameter name for the upper limit.

Fields inherited from class com.rapidminer.operator.preprocessing.PreprocessingOperator

PARAMETER_CREATE_VIEW, PARAMETER_RETURN_PREPROCESSING_MODEL

Constructor Summary

UserBasedDiscretization(OperatorDescription description)

Method Summary

Model	createPreprocessingModel(ExampleSet exampleSet)
java.util.List<ParameterType>	getParameterTypes() Returns a list of ParameterTypes describing the parameters of this operator.

Methods inherited from class com.rapidminer.operator.preprocessing.PreprocessingOperator

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_ATTRIBUTE_TYPE

public static final java.lang.String PARAMETER_ATTRIBUTE_TYPE

The parameter name for "Attribute type of the discretized attribute."

See Also:

Constant Field Values

PARAMETER_UPPER_LIMIT

public static final java.lang.String PARAMETER_UPPER_LIMIT

The parameter name for the upper limit.

See Also:

Constant Field Values

PARAMETER_RANGE_NAMES

public static final java.lang.String PARAMETER_RANGE_NAMES

The parameter name for "Defines the classes and the upper limits of each class."

See Also:

Constant Field Values

attributeTypeStrings

public static final java.lang.String[] attributeTypeStrings

ATTRIBUTE_TYPE_NOMINAL

public static final int ATTRIBUTE_TYPE_NOMINAL

See Also:

Constant Field Values

ATTRIBUTE_TYPE_ORDINAL

public static final int ATTRIBUTE_TYPE_ORDINAL

See Also:

Constant Field Values

Constructor Detail

UserBasedDiscretization

public UserBasedDiscretization(OperatorDescription description)

Method Detail

createPreprocessingModel

public Model createPreprocessingModel(ExampleSet exampleSet)
                               throws OperatorException

Specified by:

createPreprocessingModel in class PreprocessingOperator

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 PreprocessingOperator