com.rapidminer.operator.preprocessing.filter
Class ChangeAttributeType

java.lang.Object
  com.rapidminer.operator.Operator
      com.rapidminer.operator.AbstractExampleSetProcessing
          com.rapidminer.operator.preprocessing.AbstractDataProcessing
              com.rapidminer.operator.preprocessing.filter.ChangeAttributeType

All Implemented Interfaces:

ConfigurationListener, PreviewListener, ParameterHandler, LoggingHandler

public class ChangeAttributeType
extends AbstractDataProcessing

This operator can be used to change the attribute type of an attribute of the input example set. If you want to change the attribute name you should use the ChangeAttributeName operator.

The target type indicates if the attribute is a regular attribute (used by learning operators) or a special attribute (e.g. a label or id attribute). The following target attribute types are possible:

• regular: only regular attributes are used as input variables for learning tasks
• id: the id attribute for the example set
• label: target attribute for learning
• prediction: predicted attribute, i.e. the predictions of a learning scheme
• cluster: indicates the memebership to a cluster
• weight: indicates the weight of the example
• batch: indicates the membership to an example batch

Users can also define own attribute types by simply using the desired name.

Author:

Ingo Mierswa

Field Summary

static java.lang.String	PARAMETER_NAME The parameter name for "The name of the attribute of which the type should be changed.
static java.lang.String	PARAMETER_TARGET_TYPE The parameter name for "The target type of the attribute (only changed if parameter change_attribute_type is true).

Constructor Summary

ChangeAttributeType(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_NAME

public static final java.lang.String PARAMETER_NAME

The parameter name for "The name of the attribute of which the type should be changed."

See Also:

Constant Field Values

PARAMETER_TARGET_TYPE

public static final java.lang.String PARAMETER_TARGET_TYPE

The parameter name for "The target type of the attribute (only changed if parameter change_attribute_type is true)."

See Also:

Constant Field Values

Constructor Detail

ChangeAttributeType

public ChangeAttributeType(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