weka.classifiers.mi.supportVector

Class MIRBFKernel

java.lang.Object

weka.classifiers.functions.supportVector.Kernel

weka.classifiers.functions.supportVector.CachedKernel

weka.classifiers.functions.supportVector.RBFKernel

weka.classifiers.mi.supportVector.MIRBFKernel

All Implemented Interfaces:

java.io.Serializable, CapabilitiesHandler, MultiInstanceCapabilitiesHandler, OptionHandler, RevisionHandler

public class MIRBFKernel
extends RBFKernel
implements MultiInstanceCapabilitiesHandler

The RBF kernel. K(x, y) = e^-(gamma * <x-y, x-y>^2)

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)

Version:

$Revision: 9144 $

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), Lin Dong (ld21@cs.waikato.ac.nz) (MIkernel)

See Also:

Serialized Form

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
void	buildKernel(Instances data) builds the kernel with the given data.
Capabilities	getCapabilities() Returns the Capabilities of this kernel.
Capabilities	getMultiInstanceCapabilities() Returns the capabilities of this multi-instance kernel for the relational data.
java.lang.String	getRevision() Returns the revision string.

Methods inherited from class weka.classifiers.functions.supportVector.RBFKernel

gammaTipText, getGamma, getOptions, globalInfo, listOptions, setGamma, setOptions, toString

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

MIRBFKernel

public MIRBFKernel()

default constructor - does nothing.

MIRBFKernel

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

Constructor.

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

getCapabilities

public Capabilities getCapabilities()

Returns the Capabilities of this kernel.

Specified by:

getCapabilities in interface CapabilitiesHandler

Overrides:

getCapabilities in class RBFKernel

Returns:

the capabilities of this object

See Also:

Capabilities

getMultiInstanceCapabilities

public Capabilities getMultiInstanceCapabilities()

Returns the capabilities of this multi-instance kernel for the relational data.

Specified by:

getMultiInstanceCapabilities in interface MultiInstanceCapabilitiesHandler

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 RBFKernel

Parameters:

data - the data to base the kernel on

Throws:

java.lang.Exception - if something goes wrong

getRevision

public java.lang.String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Overrides:

getRevision in class RBFKernel

Returns:

the revision