weka.filters.unsupervised.attribute

Class MergeManyValues

java.lang.Object

weka.filters.Filter

weka.filters.unsupervised.attribute.MergeManyValues

All Implemented Interfaces:

Serializable, CapabilitiesHandler, OptionHandler, RevisionHandler, StreamableFilter, UnsupervisedFilter

public class MergeManyValues
extends Filter
implements UnsupervisedFilter, StreamableFilter, OptionHandler

Merges many values of a nominal attribute into one value.

Valid options are:

 -C <col>
  Sets the attribute index
  (default: last)

 -L <label>
  Sets the label of the newly merged classes
  (default: 'merged')

 -R <range>
  Sets the merge range. 'first and 'last' are accepted as well.'
  E.g.: first-5,7,9,20-last
  (default: 1,2)

Version:

$Revision: 8286 $

Author:

Kathryn Hempstalk (kah18 at cs.waikato.ac.nz)

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
MergeManyValues()

Method Summary

Methods

Modifier and Type	Method and Description
String	attributeIndexTipText() Returns the tip text for this property.
String	getAttributeIndex() Get the index of the attribute used.
Capabilities	getCapabilities() Returns the Capabilities of this filter.
String	getLabel() Get the label for the new merged class.
String	getMergeValueRange() Get the range of the merge values used.
String[]	getOptions() Gets the current settings of the filter.
String	getRevision() Returns the revision string.
String	globalInfo() Returns a string describing this filter
boolean	input(Instance instance) Input an instance for filtering.
String	labelTipText() Returns the tip text for this property.
Enumeration	listOptions() Returns an enumeration describing the available options.
static void	main(String[] args) Main method for executing this filter.
String	mergeValueRangeTipText() Returns the tip text for this property.
void	setAttributeIndex(String attIndex) Sets index of the attribute used.
boolean	setInputFormat(Instances instanceInfo) Sets the format of the input instances.
void	setLabel(String alabel) Sets label of the merged class.
void	setMergeValueRange(String range) Sets range of the merge values used.
void	setOptions(String[] options) Parses a given list of options.

Methods inherited from class weka.filters.Filter

batchFilterFile, batchFinished, filterFile, getCapabilities, getOutputFormat, isFirstBatchDone, isNewBatch, isOutputFormatDefined, makeCopies, makeCopy, mayRemoveInstanceAfterFirstBatchDone, numPendingOutput, output, outputPeek, runFilter, toString, useFilter, wekaStaticWrapper

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

MergeManyValues

public MergeManyValues()

Method Detail

globalInfo

public String globalInfo()

Returns a string describing this filter

Returns:

a description of the filter suitable for displaying in the explorer/experimenter gui

listOptions

public Enumeration listOptions()

Returns an enumeration describing the available options.

Specified by:

listOptions in interface OptionHandler

Returns:

an enumeration of all the available options.

setOptions

public void setOptions(String[] options)
                throws Exception

Parses a given list of options.

Valid options are:

 -C <col>
  Sets the attribute index
  (default: last)

 -L <label>
  Sets the label of the newly merged classes
  (default: 'merged')

 -R <range>
  Sets the merge range. 'first and 'last' are accepted as well.'
  E.g.: first-5,7,9,20-last
  (default: 1,2)

Specified by:

setOptions in interface OptionHandler

Parameters:

options - the list of options as an array of strings

Throws:

Exception - if an option is not supported

getOptions

public String[] getOptions()

Gets the current settings of the filter.

Specified by:

getOptions in interface OptionHandler

Returns:

an array of strings suitable for passing to setOptions

getCapabilities

public Capabilities getCapabilities()

Returns the Capabilities of this filter.

Specified by:

getCapabilities in interface CapabilitiesHandler

Overrides:

getCapabilities in class Filter

Returns:

the capabilities of this object

See Also:

Capabilities

setInputFormat

public boolean setInputFormat(Instances instanceInfo)
                       throws Exception

Sets the format of the input instances.

Overrides:

setInputFormat in class Filter

Parameters:

instanceInfo - an Instances object containing the input instance structure (any instances contained in the object are ignored - only the structure is required).

Returns:

true if the outputFormat may be collected immediately

Throws:

Exception - if the input format can't be set successfully

input

public boolean input(Instance instance)

Input an instance for filtering. The instance is processed and made available for output immediately.

Overrides:

input in class Filter

Parameters:

instance - the input instance

Returns:

true if the filtered instance may now be collected with output().

Throws:

IllegalStateException - if no input format has been set.

attributeIndexTipText

public String attributeIndexTipText()

Returns the tip text for this property.

Returns:

tip text for this property suitable for displaying in the explorer/experimenter gui

getAttributeIndex

public String getAttributeIndex()

Get the index of the attribute used.

Returns:

the index of the attribute

setAttributeIndex

public void setAttributeIndex(String attIndex)

Sets index of the attribute used.

Parameters:

attIndex - the index of the attribute

labelTipText

public String labelTipText()

Returns the tip text for this property.

Returns:

tip text for this property suitable for displaying in the explorer/experimenter gui

getLabel

public String getLabel()

Get the label for the new merged class.

Returns:

the label for the merged class.

setLabel

public void setLabel(String alabel)

Sets label of the merged class.

Parameters:

alabel - the new label.

getMergeValueRange

public String getMergeValueRange()

Get the range of the merge values used.

Returns:

the range of the merge values

mergeValueRangeTipText

public String mergeValueRangeTipText()

Returns the tip text for this property.

Returns:

tip text for this property suitable for displaying in the explorer/experimenter gui

setMergeValueRange

public void setMergeValueRange(String range)

Sets range of the merge values used.

Parameters:

range - the range of the merged values

getRevision

public String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Overrides:

getRevision in class Filter

Returns:

The revision string.

main

public static void main(String[] args)

Main method for executing this filter.

Parameters:

args - use -h to display all options