com.rapidminer.operator.features.weighting
Class ProcessLog2AttributeWeights

java.lang.Object
  com.rapidminer.operator.Operator
      com.rapidminer.operator.features.weighting.ProcessLog2AttributeWeights

All Implemented Interfaces:

ConfigurationListener, PreviewListener, ParameterHandler, LoggingHandler

public class ProcessLog2AttributeWeights
extends Operator

This operator creates attribute weights from an attribute column in the statistics created by the ProcessLog operator. In order to use this operator, one has first to add a ProcessLog operator inside of a feature selection operator and log the currently selected attribute names. This operator will then calculate attribute weights from such a statistics table by checking how often each attribute was selected and use the relative frequencies as attribute weights.

If the performance is also logged with the ProcessLog operator, these values can also be used to calculate the relative frequencies. In this case, the sorting type can be set to only use the top k or the bottom k attribute sets for frequency calculation according to the specified performance column.

Author:

Ingo Mierswa

Field Summary

static java.lang.String	PARAMETER_ATTRIBUTE_NAMES_COLUMN
static java.lang.String	PARAMETER_LOG_NAME
static java.lang.String	PARAMETER_SORTING_DIMENSION
static java.lang.String	PARAMETER_SORTING_K
static java.lang.String	PARAMETER_SORTING_TYPE
static int	SORTING_TYPE_BOTTOM_K
static int	SORTING_TYPE_NONE
static int	SORTING_TYPE_TOP_K
static java.lang.String[]	SORTING_TYPES

Constructor Summary

ProcessLog2AttributeWeights(OperatorDescription description)

Method Summary

IOObject[]	apply() Implement this method in subclasses.
java.lang.Class<?>[]	getInputClasses() Returns the classes that are needed as input.
java.lang.Class<?>[]	getOutputClasses() Returns the classes that are guaranteed to be returned by apply() as additional output.
java.util.List<ParameterType>	getParameterTypes() Returns a list of ParameterTypes describing the parameters of this operator.

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_LOG_NAME

public static final java.lang.String PARAMETER_LOG_NAME

See Also:

Constant Field Values

PARAMETER_ATTRIBUTE_NAMES_COLUMN

public static final java.lang.String PARAMETER_ATTRIBUTE_NAMES_COLUMN

See Also:

Constant Field Values

PARAMETER_SORTING_TYPE

public static final java.lang.String PARAMETER_SORTING_TYPE

See Also:

Constant Field Values

PARAMETER_SORTING_DIMENSION

public static final java.lang.String PARAMETER_SORTING_DIMENSION

See Also:

Constant Field Values

PARAMETER_SORTING_K

public static final java.lang.String PARAMETER_SORTING_K

See Also:

Constant Field Values

SORTING_TYPES

public static final java.lang.String[] SORTING_TYPES

SORTING_TYPE_NONE

public static final int SORTING_TYPE_NONE

See Also:

Constant Field Values

SORTING_TYPE_TOP_K

public static final int SORTING_TYPE_TOP_K

See Also:

Constant Field Values

SORTING_TYPE_BOTTOM_K

public static final int SORTING_TYPE_BOTTOM_K

See Also:

Constant Field Values

Constructor Detail

ProcessLog2AttributeWeights

public ProcessLog2AttributeWeights(OperatorDescription description)

Method Detail

apply

public IOObject[] apply()
                 throws OperatorException

Description copied from class: Operator

Implement this method in subclasses.

Specified by:

apply in class Operator

Throws:

OperatorException

getInputClasses

public java.lang.Class<?>[] getInputClasses()

Description copied from class: Operator

Returns the classes that are needed as input. May be null or an empty (no desired input). As default, all delivered input objects are consumed and must be also delivered as output in both Operator.getOutputClasses() and Operator.apply() if this is necessary. This default behavior can be changed by overriding Operator.getInputDescription(Class). Subclasses which implement this method should not make use of parameters since this method is invoked by getParameterTypes(). Therefore, parameters are not fully available at this point of time and this might lead to exceptions. Please use InputDescriptions instead.

Specified by:

getInputClasses in class Operator

getOutputClasses

public java.lang.Class<?>[] getOutputClasses()

Description copied from class: Operator

Returns the classes that are guaranteed to be returned by apply() as additional output. Please note that input objects which should not be consumed must also be defined by this method (e.g. an example set which is changed but not consumed in the case of a preprocessing operator must be defined in both, the methods Operator.getInputClasses() and Operator.getOutputClasses()). The default behavior for input consumation is defined by Operator.getInputDescription(Class) and can be changed by overwriting this method. Objects which are not consumed (defined by changing the implementation in Operator.getInputDescription(Class)) must not be defined as additional output in this method.

May deliver null or an empy array (no additional output is produced or guaranteed). Must return the class array of delivered output objects otherwise.

Specified by:

getOutputClasses in class Operator

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