Package weka.filters.unsupervised.attribute

Class RandomSubset

java.lang.Object
weka.filters.Filter
weka.filters.SimpleFilter
weka.filters.SimpleStreamFilter
weka.filters.unsupervised.attribute.RandomSubset
All Implemented Interfaces:
Serializable, CapabilitiesHandler, OptionHandler, RevisionHandler, StreamableFilter
public class RandomSubset extends SimpleStreamFilter
Chooses a random subset of attributes, either an absolute number or a percentage. The class is always included in the output (as the last attribute).

Valid options are: 

 -D
  Turns on output of debugging information.
 -N <double>
  The number of attributes to randomly select.
  If < 1 then percentage, >= 1 absolute number.
  (default: 0.5)
 -S <int>
  The seed value.
  (default: 1)
Version:
$Revision: 5547 $
Author:
fracpete (fracpete at waikato dot ac dot nz)
See Also:

  • Constructor Details

    • RandomSubset

      public RandomSubset()

  • Method Details

    • globalInfo

      public 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

    • listOptions

      public 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.

    • getOptions

      public String[] getOptions()
      Gets the current settings of the filter.
      Specified by:
      getOptions in interface OptionHandler
      Overrides:
      getOptions in class SimpleFilter
      Returns:
      an array of strings suitable for passing to setOptions

    • setOptions

      public void setOptions(String[] options) throws Exception
      Parses a given list of options.

      Valid options are: 

       -D
  Turns on output of debugging information.
       -N <double>
  The number of attributes to randomly select.
  If < 1 then percentage, >= 1 absolute number.
  (default: 0.5)
       -S <int>
  The seed value.
  (default: 1)
      Specified by:
      setOptions in interface OptionHandler
      Overrides:
      setOptions in class SimpleFilter
      Parameters:
      options - the list of options as an array of strings
      Throws:
      Exception - if an option is not supported
      See Also:
      • SimpleFilter.reset()

    • numAttributesTipText

      public String numAttributesTipText()
      Returns the tip text for this property.
      Returns:
      tip text for this property suitable for displaying in the explorer/experimenter gui

    • getNumAttributes

      public double getNumAttributes()
      Get the number of attributes (< 1 percentage, >= 1 absolute number).
      Returns:
      the number of attributes.

    • setNumAttributes

      public void setNumAttributes(double value)
      Set the number of attributes.
      Parameters:
      value - the number of attributes to use.

    • seedTipText

      public String seedTipText()
      Returns the tip text for this property.
      Returns:
      tip text for this property suitable for displaying in the explorer/experimenter gui

    • getSeed

      public int getSeed()
      Get the seed value for the random number generator.
      Returns:
      the seed value.

    • setSeed

      public void setSeed(int value)
      Set the seed value for the random number generator.
      Parameters:
      value - the seed value.

    • 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:

    • getRevision

      public 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(String[] args)
      Runs the filter with the given parameters. Use -h to list options.
      Parameters:
      args - the commandline options