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## weka.filters.unsupervised.attribute
Class RELAGGS

    java.lang.Object
      weka.filters.Filter
          weka.filters.SimpleFilter
              weka.filters.SimpleBatchFilter
                  weka.filters.unsupervised.attribute.RELAGGS

All Implemented Interfaces:
  java.io.Serializable, CapabilitiesHandler, OptionHandler, RevisionHandler, TechnicalInformationHandler

    public class RELAGGS

extends SimpleBatchFilter
implements TechnicalInformationHandler

A propositionalization filter inspired by the RELAGGS algorithm.
It processes all relational attributes that fall into the user defined range (all others are skipped, i.e., not added to the output). Currently, the filter only processes one level of nesting.
The class attribute is not touched.
For more information see:
M.-A. Krogel, S. Wrobel: Facets of Aggregation Approaches to Propositionalization. In: Work-in-Progress Track at the Thirteenth International Conference on Inductive Logic Programming (ILP), 2003.

BibTeX:

     @inproceedings{Krogel2003,
        author = {M.-A. Krogel and S. Wrobel},
        booktitle = {Work-in-Progress Track at the Thirteenth International Conference on Inductive Logic Programming (ILP)},
        editor = {T. Horvath and A. Yamamoto},
        title = {Facets of Aggregation Approaches to Propositionalization},
        year = {2003},
        PDF = {http://kd.cs.uni-magdeburg.de/\~krogel/papers/aggs.pdf}
     }

Valid options are:

     -D
      Turns on output of debugging information.

     -R <index1,index2-index4,...>
      Specify list of string attributes to convert to words.
      (default: select all relational attributes)

     -V
      Inverts the matching sense of the selection.

     -C <num>
      Max. cardinality of nominal attributes. If a nominal attribute
      has more values than this upper limit, then it will be skipped.
      (default: 20)

Version:
  $Revision: 5987 $
Author:
  fracpete (fracpete at waikato dot ac dot nz)
See Also:
  Serialized Form

Constructor Summary
`RELAGGS()`

Method Summary
`java.lang.String` | `attributeIndicesTipText()` Returns the tip text for this property
`Capabilities` | `getCapabilities()` Returns the Capabilities of this filter.
`boolean` | `getInvertSelection()` Gets whether the supplied columns are to be processed or skipped
`int` | `getMaxCardinality()` Gets the maximum number of values allowed for nominal attributes, before they're skipped.
`java.lang.String[]` | `getOptions()` Gets the current settings of the classifier.
`java.lang.String` | `getRevision()` Returns the revision string.
`Range` | `getSelectedRange()` Gets the current range selection.
`TechnicalInformation` | `getTechnicalInformation()` Returns an instance of a TechnicalInformation object, containing detailed information about the technical background of this class, e.g., paper reference or book this class is based on.
`java.lang.String` | `globalInfo()` Returns a string describing this filter
`java.lang.String` | `invertSelectionTipText()` Returns the tip text for this property
`java.util.Enumeration` | `listOptions()` Returns an enumeration describing the available options.
`static void` | `main(java.lang.String[] args)` runs the filter with the given arguments
`java.lang.String` | `maxCardinalityTipText()` Returns the tip text for this property
`void` | `setInvertSelection(boolean value)` Sets whether selected columns should be processed or skipped.
`void` | `setMaxCardinality(int value)` Sets the maximum number of values allowed for nominal attributes, before they're skipped.
`void` | `setOptions(java.lang.String[] options)` Parses the options for this object.
`void` | `setSelectedRange(java.lang.String value)` Set the range of attributes to process.

Methods inherited from class weka.filters.SimpleBatchFilter
`batchFinished, input`

Methods inherited from class weka.filters.SimpleFilter
`debugTipText, getDebug, setDebug, setInputFormat`

Methods inherited from class weka.filters.Filter
`batchFilterFile, filterFile, getCapabilities, getOutputFormat, isFirstBatchDone, isNewBatch, isOutputFormatDefined, makeCopies, makeCopy, numPendingOutput, output, outputPeek, toString, useFilter, wekaStaticWrapper`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

### RELAGGS

    public RELAGGS()

Method Detail

### globalInfo

    public java.lang.String globalInfo()

  Returns a string describing this filter

  Specified by:
    `globalInfo` in class `SimpleFilter`
  Returns:
    a description of the filter suitable for displaying in the explorer/experimenter gui

### getTechnicalInformation

    public TechnicalInformation getTechnicalInformation()

  Returns an instance of a TechnicalInformation object, containing detailed information about the technical background of this class, e.g., paper reference or book this class is based on.

  Specified by:
    `getTechnicalInformation` in interface `TechnicalInformationHandler`
  Returns:
    the technical information about this class

### listOptions

    public java.util.Enumeration listOptions()

  Returns an enumeration describing the available options.

  Specified by:
    `listOptions` in interface `OptionHandler`
  Overrides:
    `listOptions` in class `SimpleFilter`
  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:

       -D
        Turns on output of debugging information.

       -R <index1,index2-index4,...>
        Specify list of string attributes to convert to words.
        (default: select all relational attributes)

       -V
        Inverts the matching sense of the selection.

       -C <num>
        Max. cardinality of nominal attributes. If a nominal attribute
        has more values than this upper limit, then it will be skipped.
        (default: 20)

  Specified by:
    `setOptions` in interface `OptionHandler`
  Overrides:
    `setOptions` in class `SimpleFilter`
  Parameters:
    `options` - the options to use
  Throws:
    `java.lang.Exception` - if setting of options fails
  See Also:
    `SimpleFilter.reset()`

### getOptions

    public java.lang.String[] getOptions()

  Gets the current settings of the classifier.

  Specified by:
    `getOptions` in interface `OptionHandler`
  Overrides:
    `getOptions` in class `SimpleFilter`
  Returns:
    an array of strings suitable for passing to setOptions

### maxCardinalityTipText

    public java.lang.String maxCardinalityTipText()

  Returns the tip text for this property

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

### setMaxCardinality

    public void setMaxCardinality(int value)

  Sets the maximum number of values allowed for nominal attributes, before they're skipped.

  Parameters:
    `value` - the maximum value.

### getMaxCardinality

    public int getMaxCardinality()

  Gets the maximum number of values allowed for nominal attributes, before they're skipped.

  Returns:
    the maximum number.

### attributeIndicesTipText

    public java.lang.String attributeIndicesTipText()

  Returns the tip text for this property

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

### setSelectedRange

    public void setSelectedRange(java.lang.String value)

  Set the range of attributes to process.

  Parameters:
    `value` - the new range.

### getSelectedRange

    public Range getSelectedRange()

  Gets the current range selection.

  Returns:
    current selection.

### invertSelectionTipText

    public java.lang.String invertSelectionTipText()

  Returns the tip text for this property

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

### setInvertSelection

    public void setInvertSelection(boolean value)

  Sets whether selected columns should be processed or skipped.

  Parameters:
    `value` - the new invert setting

### getInvertSelection

    public boolean getInvertSelection()

  Gets whether the supplied columns are to be processed or skipped

  Returns:
    true if the supplied columns will be kept

### 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`

### getRevision

    public java.lang.String getRevision()

  Returns the revision string.

  Specified by:
    `getRevision` in interface `RevisionHandler`
  Overrides:
    `getRevision` in class `Filter`
  Returns:
    the revision

### main

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

  runs the filter with the given arguments

  Parameters:
    `args` - the commandline arguments

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