weka.filters.unsupervised.attribute
Class AddCluster

java.lang.Object
  |
  +--weka.filters.Filter
        |
        +--weka.filters.unsupervised.attribute.AddCluster

All Implemented Interfaces:

OptionHandler, java.io.Serializable, UnsupervisedFilter

public class AddCluster

extends Filter

implements UnsupervisedFilter, OptionHandler

A filter that adds a new nominal attribute representing the cluster assigned to each instance by the specified clustering algorithm.

Valid filter-specific options are:

-W clusterer string
Full class name of clusterer to use, followed by scheme options. (required)

-I range string
The range of attributes the clusterer should ignore. Note: if a class index is set then the class is automatically ignored during clustering.

Version:

$Revision: 1.3 $

Author:

Richard Kirkby (rkirkby@cs.waikato.ac.nz)

See Also:

Serialized Form

Constructor Summary

AddCluster()

Method Summary

boolean	batchFinished() Signify that this batch of input to the filter is finished.
java.lang.String	clustererTipText() Returns the tip text for this property
Clusterer	getClusterer() Gets the clusterer used by the filter.
java.lang.String	getIgnoredAttributeIndices() Gets ranges of attributes to be ignored.
java.lang.String[]	getOptions() Gets the current settings of the filter.
java.lang.String	globalInfo() Returns a string describing this filter
java.lang.String	ignoredAttributeIndicesTipText() Returns the tip text for this property
boolean	input(Instance instance) Input an instance for filtering.
java.util.Enumeration	listOptions() Returns an enumeration describing the available options.
static void	main(java.lang.String[] argv) Main method for testing this class.
void	setClusterer(Clusterer clusterer) Sets the clusterer to assign clusters with.
void	setIgnoredAttributeIndices(java.lang.String rangeList) Sets the ranges of attributes to be ignored.
boolean	setInputFormat(Instances instanceInfo) Sets the format of the input instances.
void	setOptions(java.lang.String[] options) Parses the options for this object.

Methods inherited from class weka.filters.Filter

batchFilterFile, filterFile, getOutputFormat, inputFormat, isOutputFormatDefined, numPendingOutput, output, outputFormat, outputPeek, useFilter

Methods inherited from class java.lang.Object

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

Constructor Detail

AddCluster

public AddCluster()

Method Detail

setInputFormat

public boolean setInputFormat(Instances instanceInfo)
                       throws java.lang.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:

java.lang.Exception - if the inputFormat can't be set successfully

batchFinished

public boolean batchFinished()
                      throws java.lang.Exception

Signify that this batch of input to the filter is finished.

Overrides:

batchFinished in class Filter

Returns:

true if there are instances pending output

Throws:

java.lang.IllegalStateException - if no input structure has been defined

java.lang.Exception - if there was a problem finishing the batch.

input

public boolean input(Instance instance)
              throws java.lang.Exception

Input an instance for filtering. Ordinarily the instance is processed and made available for output immediately. Some filters require all instances be read before producing output.

Overrides:

input in class Filter

Parameters:

instance - the input instance

Returns:

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

Throws:

java.lang.IllegalStateException - if no input format has been defined.

java.lang.Exception - if the input instance was not of the correct format or if there was a problem with the filtering.

listOptions

public java.util.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(java.lang.String[] options)
                throws java.lang.Exception

Parses the options for this object. Valid options are:

-W clusterer string
Full class name of clusterer to use, followed by scheme options. (required)

-I range string
The range of attributes the clusterer should ignore. Note: if a class index is set then the class is automatically ignored during clustering

Specified by:

setOptions in interface OptionHandler

Parameters:

options - the list of options as an array of strings

Throws:

java.lang.Exception - if an option is not supported

getOptions

public java.lang.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

globalInfo

public java.lang.String globalInfo()

Returns a string describing this filter

Returns:

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

clustererTipText

public java.lang.String clustererTipText()

Returns the tip text for this property

Returns:

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

setClusterer

public void setClusterer(Clusterer clusterer)

Sets the clusterer to assign clusters with.

Parameters:

clusterer - The clusterer to be used (with its options set).

getClusterer

public Clusterer getClusterer()

Gets the clusterer used by the filter.

Returns:

The clusterer being used.

ignoredAttributeIndicesTipText

public java.lang.String ignoredAttributeIndicesTipText()

Returns the tip text for this property

Returns:

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

getIgnoredAttributeIndices

public java.lang.String getIgnoredAttributeIndices()

Gets ranges of attributes to be ignored.

Returns:

a string containing a comma-separated list of ranges

setIgnoredAttributeIndices

public void setIgnoredAttributeIndices(java.lang.String rangeList)

Sets the ranges of attributes to be ignored. If provided string is null, no attributes will be ignored.

Parameters:

rangeList - a string representing the list of attributes. eg: first-3,5,6-last

Throws:

java.lang.IllegalArgumentException - if an invalid range list is supplied

main

public static void main(java.lang.String[] argv)

Main method for testing this class.

Parameters:

argv - should contain arguments to the filter: use -h for help