weka.classifiers.functions.supportVector

Class Puk

java.lang.Object

weka.classifiers.functions.supportVector.Kernel

weka.classifiers.functions.supportVector.CachedKernel

weka.classifiers.functions.supportVector.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)

 -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)

 -O <num>
  The Omega parameter.
  (default: 1.0)

 -S <num>
  The Sigma parameter.
  (default: 1.0)

Version:

$Revision: 5518 $

Author:

Bernhard Pfahringer ([email protected])

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Puk() default constructor - does nothing.
Puk(Instances data, int cacheSize, double omega, double sigma) Constructor.

Method Summary

Methods

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.
double	getOmega() Gets the omega value.
String[]	getOptions() Gets the current settings of the Kernel.
String	getRevision() Returns the revision string.
double	getSigma() Gets the sigma value.
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.
String	globalInfo() Returns a string describing the kernel
Enumeration	listOptions() Returns an enumeration describing the available options.
String	omegaTipText() Returns the tip text for this property
void	setOmega(double value) Sets the omega value.
void	setOptions(String[] options) Parses a given list of options.
void	setSigma(double value) Sets the sigma value.
String	sigmaTipText() Returns the tip text for this property
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

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

listOptions

public 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(String[] options)
                throws 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)

 -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

getOptions

public 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

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

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 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

getRevision

public String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Overrides:

getRevision in class Kernel

Returns:

the revision