All Implemented Interfaces:

java.io.Serializable, CapabilitiesHandler, OptionHandler, RevisionHandler

Direct Known Subclasses:

MIRBFKernel

public class RBFKernel
extends CachedKernel 

 -D
 Enables debugging output (if available) to be printed.
 (default: off)

 -no-checks
 Turns off all checks - use with caution!
 (default: checks on)

 -C <num>
 The size of the cache (a prime number), 0 for full cache and 
 -1 to turn it off.
 (default: 250007)

 -G <num>
 The Gamma parameter.
 (default: 0.01)

Version:

$Revision: 5518 $

Author:

Eibe Frank (eibe@cs.waikato.ac.nz), Shane Legg (shane@intelligenesis.net) (sparse vector code), Stuart Inglis (stuart@reeltwo.com) (sparse vector code), J. Lindgren (jtlindgr{at}cs.helsinki.fi) (RBF kernel)

See Also:

Serialized Form

• Constructor Summary

  Constructors

  Constructor and Description
  RBFKernel () default constructor - does nothing.
  RBFKernel (Instances data, int cacheSize, double gamma) Constructor.

• Method Summary

  All Methods

  Modifier and Type	Method and Description
  void	buildKernel (Instances data) builds the kernel with the given data.
  java.lang.String	gammaTipText () Returns the tip text for this property
  Capabilities	getCapabilities () Returns the Capabilities of this kernel.
  double	getGamma () Gets the gamma value.
  java.lang.String[]	getOptions () Gets the current settings of the Kernel.
  java.lang.String	getRevision () Returns the revision string.
  java.lang.String	globalInfo () Returns a string describing the kernel
  java.util.Enumeration	listOptions () Returns an enumeration describing the available options.
  void	setGamma (double value) Sets the gamma value.
  void	setOptions (java.lang.String[] options) Parses a given list of options.
  java.lang.String	toString () returns a string representation for the Kernel

  • Methods inherited from class weka.classifiers.functions.supportVector.CachedKernel

    cacheSizeTipText, clean, eval, getCacheSize, numCacheHits, numEvals, setCacheSize

  • Methods inherited from class weka.classifiers.functions.supportVector.Kernel

    checksTurnedOffTipText, debugTipText, forName, getChecksTurnedOff, getDebug, makeCopies, makeCopy, setChecksTurnedOff, setDebug

  • Methods inherited from class java.lang.Object

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

• Constructor Detail

  • RBFKernel

    public RBFKernel()

    default constructor - does nothing.

  • RBFKernel

    public RBFKernel(Instances data,
     int cacheSize,
     double gamma)
     throws java.lang.Exception

    Constructor. Initializes m_kernelPrecalc[].

    Parameters:

    data - the data to use

    cacheSize - the size of the cache

    gamma - the bandwidth

    Throws:

    java.lang.Exception - if something goes wrong

• Method Detail

  • globalInfo

    public java.lang.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

  • listOptions

    public java.util.Enumeration listOptions()

    Returns an enumeration describing the available options.

    Specified by:

    listOptions in interface OptionHandler

    Overrides:

    listOptions in class CachedKernel

    Returns:

    an enumeration of all the available options.

  • setOptions

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

    Parses a given list of options.

    Valid options are:

     -D
     Enables debugging output (if available) to be printed.
     (default: off)

     -no-checks
     Turns off all checks - use with caution!
     (default: checks on)

     -C <num>
     The size of the cache (a prime number), 0 for full cache and 
     -1 to turn it off.
     (default: 250007)

     -G <num>
     The Gamma parameter.
     (default: 0.01)

    Specified by:

    setOptions in interface OptionHandler

    Overrides:

    setOptions in class CachedKernel

    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 Kernel.

    Specified by:

    getOptions in interface OptionHandler

    Overrides:

    getOptions in class CachedKernel

    Returns:

    an array of strings suitable for passing to setOptions

  • setGamma

    public void setGamma(double value)

    Sets the gamma value.

    Parameters:

    value - the gamma value

  • getGamma

    public double getGamma()

    Gets the gamma value.

    Returns:

    the gamma value

  • gammaTipText

    public java.lang.String gammaTipText()

    Returns the tip text for this property

    Returns:

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

  • getCapabilities

    public Capabilities getCapabilities()

    Returns the Capabilities of this kernel.

    Specified by:

    getCapabilities in interface CapabilitiesHandler

    Overrides:

    getCapabilities in class Kernel

    Returns:

    the capabilities of this object

    See Also:

    Capabilities

  • buildKernel

    public void buildKernel(Instances data)
     throws java.lang.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:

    java.lang.Exception - if something goes wrong

  • toString

    public java.lang.String toString()

    returns a string representation for the Kernel

    Overrides:

    toString in class java.lang.Object

    Returns:

    a string representaiton of the kernel

  • getRevision

    public java.lang.String getRevision()

    Returns the revision string.

    Specified by:

    getRevision in interface RevisionHandler

    Overrides:

    getRevision in class Kernel

    Returns:

    the revision