Package weka.filters.unsupervised.attribute

Class PKIDiscretize

  • All Implemented Interfaces:
    Serializable, CapabilitiesHandler, CapabilitiesIgnorer, CommandlineRunnable, OptionHandler, RevisionHandler, TechnicalInformationHandler, WeightedAttributesHandler, WeightedInstancesHandler, UnsupervisedFilter
    public class PKIDiscretize
extends Discretize
implements TechnicalInformationHandler, WeightedAttributesHandler, WeightedInstancesHandler
    Discretizes numeric attributes using equal frequency binning and forces the number of bins to be equal to the square root of the number of values of the numeric attribute.

    For more information, see:

    Ying Yang, Geoffrey I. Webb: Proportional k-Interval Discretization for Naive-Bayes Classifiers. In: 12th European Conference on Machine Learning, 564-575, 2001.

    BibTeX: 

     @inproceedings{Yang2001,
    author = {Ying Yang and Geoffrey I. Webb},
    booktitle = {12th European Conference on Machine Learning},
    pages = {564-575},
    publisher = {Springer},
    series = {LNCS},
    title = {Proportional k-Interval Discretization for Naive-Bayes Classifiers},
    volume = {2167},
    year = {2001}
 }

    Valid options are: 

     -unset-class-temporarily
  Unsets the class index temporarily before the filter is
  applied to the data.
  (default: no)
 
     -R <col1,col2-col4,...>
  Specifies list of columns to discretize. First and last are valid indexes.
  (default: first-last)
 
     -V
  Invert matching sense of column indexes.
 
     -D
  Output binary attributes for discretized attributes.
    Version:
    $Revision$
    Author:
    Richard Kirkby (rkirkby@cs.waikato.ac.nz)
    See Also:
    Serialized Form

    • Constructor Detail

      • PKIDiscretize

        public PKIDiscretize()

    • Method Detail

      • setInputFormat

        public boolean setInputFormat​(Instances instanceInfo)
                       throws Exception
        Sets the format of the input instances.
        Overrides:
        setInputFormat in class Discretize
        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

      • globalInfo

        public String globalInfo()
        Returns a string describing this filter
        Overrides:
        globalInfo in class Discretize
        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

      • findNumBinsTipText

        public String findNumBinsTipText()
        Returns the tip text for this property
        Overrides:
        findNumBinsTipText in class Discretize
        Returns:
        tip text for this property suitable for displaying in the explorer/experimenter gui

      • getFindNumBins

        public boolean getFindNumBins()
        Get the value of FindNumBins.
        Overrides:
        getFindNumBins in class Discretize
        Returns:
        Value of FindNumBins.

      • setFindNumBins

        public void setFindNumBins​(boolean newFindNumBins)
        Set the value of FindNumBins.
        Overrides:
        setFindNumBins in class Discretize
        Parameters:
        newFindNumBins - Value to assign to FindNumBins.

      • useEqualFrequencyTipText

        public String useEqualFrequencyTipText()
        Returns the tip text for this property
        Overrides:
        useEqualFrequencyTipText in class Discretize
        Returns:
        tip text for this property suitable for displaying in the explorer/experimenter gui

      • getUseEqualFrequency

        public boolean getUseEqualFrequency()
        Get the value of UseEqualFrequency.
        Overrides:
        getUseEqualFrequency in class Discretize
        Returns:
        Value of UseEqualFrequency.

      • setUseEqualFrequency

        public void setUseEqualFrequency​(boolean newUseEqualFrequency)
        Set the value of UseEqualFrequency.
        Overrides:
        setUseEqualFrequency in class Discretize
        Parameters:
        newUseEqualFrequency - Value to assign to UseEqualFrequency.

      • binsTipText

        public String binsTipText()
        Returns the tip text for this property
        Overrides:
        binsTipText in class Discretize
        Returns:
        tip text for this property suitable for displaying in the explorer/experimenter gui

      • getBins

        public int getBins()
        Ignored
        Overrides:
        getBins in class Discretize
        Returns:
        the number of bins.

      • setBins

        public void setBins​(int numBins)
        Ignored
        Overrides:
        setBins in class Discretize
        Parameters:
        numBins - the number of bins

      • main

        public static void main​(String[] argv)
        Main method for testing this class.
        Parameters:
        argv - should contain arguments to the filter: use -h for help