Package weka.classifiers.functions.supportVector

Class Puk

  • All Implemented Interfaces:
    Serializable, CapabilitiesHandler, OptionHandler, RevisionHandler, TechnicalInformationHandler
    public class Puk
extends CachedKernel
implements TechnicalInformationHandler
    The Pearson VII function-based universal kernel.

    For more information see:

    B. Uestuen, W.J. Melssen, L.M.C. Buydens (2006). Facilitating the application of Support Vector Regression by using a universal Pearson VII function based kernel. Chemometrics and Intelligent Laboratory Systems. 81:29-40.

    Valid options are: 

     -D
  Enables debugging output (if available) to be printed.
  (default: off)
 
     -C <num>
  The size of the cache (a prime number), 0 for full cache and 
  -1 to turn it off.
  (default: 250007)
 
     -O <num>
  The Omega parameter.
  (default: 1.0)
 
     -S <num>
  The Sigma parameter.
  (default: 1.0)
    Version:
    $Revision$
    Author:
    Bernhard Pfahringer (bernhard@cs.waikato.ac.nz)
    See Also:
    Serialized Form

    • Constructor Detail

      • Puk

        public Puk()
        default constructor - does nothing.

      • Puk

        public Puk​(Instances data,
           int cacheSize,
           double omega,
           double sigma)
    throws Exception
        Constructor. Initializes m_kernelPrecalc[].
        Parameters:
        data - the data to use
        cacheSize - the size of the cache
        omega - the exponent
        sigma - the bandwidth
        Throws:
        Exception - if something goes wrong

    • Method Detail

      • globalInfo

        public String globalInfo()
        Returns a string describing the kernel
        Specified by:
        globalInfo in class Kernel
        Returns:
        a description 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

      • setOptions

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

        Valid options are: 

         -D
  Enables debugging output (if available) to be printed.
  (default: off)
 
         -C <num>
  The size of the cache (a prime number), 0 for full cache and 
  -1 to turn it off.
  (default: 250007)
 
         -O <num>
  The Omega parameter.
  (default: 1.0)
 
         -S <num>
  The Sigma parameter.
  (default: 1.0)
        Specified by:
        setOptions in interface OptionHandler
        Overrides:
        setOptions in class CachedKernel
        Parameters:
        options - the list of options as an array of strings
        Throws:
        Exception - if an option is not supported

      • setOmega

        public void setOmega​(double value)
        Sets the omega value.
        Parameters:
        value - the omega value

      • getOmega

        public double getOmega()
        Gets the omega value.
        Returns:
        the omega value

      • omegaTipText

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

      • setSigma

        public void setSigma​(double value)
        Sets the sigma value.
        Parameters:
        value - the sigma value

      • getSigma

        public double getSigma()
        Gets the sigma value.
        Returns:
        the sigma value

      • sigmaTipText

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

      • buildKernel

        public void buildKernel​(Instances data)
                 throws Exception
        builds the kernel with the given data. Initializes the kernel cache. The actual size of the cache in bytes is (64 * cacheSize).
        Overrides:
        buildKernel in class CachedKernel
        Parameters:
        data - the data to base the kernel on
        Throws:
        Exception - if something goes wrong

      • toString

        public String toString()
        returns a string representation for the Kernel
        Overrides:
        toString in class Object
        Returns:
        a string representaiton of the kernel