All Implemented Interfaces:

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

public class PrecomputedKernelMatrixKernel
extends Kernel
implements Copyable 

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

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

 -M <file name>
 The file name of the file that holds the kernel matrix.
 (default: kernelMatrix.matrix)

Version:

$Revision: 9897 $

Author:

Eibe Frank (eibe@cs.waikato.ac.nz)

See Also:

Serialized Form

• Constructor Summary

  Constructors

  Constructor and Description
  PrecomputedKernelMatrixKernel ()

• Method Summary

  All Methods

  Modifier and Type	Method and Description
  void	clean () Frees the memory used by the kernel.
  java.lang.Object	copy () Return a shallow copy of this kernel
  double	eval (int id1, int id2, Instance inst1) Computes the result of the kernel function for two instances.
  Capabilities	getCapabilities () Returns the Capabilities of this kernel.
  java.io.File	getKernelMatrixFile () Gets the file containing the kernel matrix.
  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.lang.String	kernelMatrixFileTipText () Returns the tip text for this property
  java.util.Enumeration	listOptions () Returns an enumeration describing the available options.
  int	numCacheHits () Returns the number of dot product cache hits.
  int	numEvals () Returns the number of kernel evaluation performed.
  void	setKernelMatrixFile (java.io.File f) Sets the file holding the kernel matrix
  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.Kernel

    buildKernel, 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

  • PrecomputedKernelMatrixKernel

    public PrecomputedKernelMatrixKernel()

• Method Detail

  • copy

    public java.lang.Object copy()

    Return a shallow copy of this kernel

    Specified by:

    copy in interface Copyable

    Returns:

    a shallow copy of this kernel

  • 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 Kernel

    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)

     -M <file name>
     The file name of the file that holds the kernel matrix.
     (default: kernelMatrix.matrix)

    Specified by:

    setOptions in interface OptionHandler

    Overrides:

    setOptions in class Kernel

    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 Kernel

    Returns:

    an array of strings suitable for passing to setOptions

  • eval

    public double eval(int id1,
     int id2,
     Instance inst1)
     throws java.lang.Exception

    Description copied from class: Kernel
    Computes the result of the kernel function for two instances. If id1 == -1, eval use inst1 instead of an instance in the dataset.

    Specified by:

    eval in class Kernel

    Parameters:

    id1 - the index of instance 1

    id2 - the index of instance 2

    inst1 - the instance 1 object

    Returns:

    the dot product

    Throws:

    java.lang.Exception - if something goes wrong

  • 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

  • setKernelMatrixFile

    public void setKernelMatrixFile(java.io.File f)

    Sets the file holding the kernel matrix

    Parameters:

    value - the exponent value

  • getKernelMatrixFile

    public java.io.File getKernelMatrixFile()

    Gets the file containing the kernel matrix.

    Returns:

    the exponent value

  • kernelMatrixFileTipText

    public java.lang.String kernelMatrixFileTipText()

    Returns the tip text for this property

    Returns:

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

  • 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

  • clean

    public void clean()

    Frees the memory used by the kernel. (Useful with kernels which use cache.) This function is called when the training is done. i.e. after that, eval will be called with id1 == -1.

    Specified by:

    clean in class Kernel

  • numEvals

    public int numEvals()

    Returns the number of kernel evaluation performed.

    Specified by:

    numEvals in class Kernel

    Returns:

    the number of kernel evaluation performed.

  • numCacheHits

    public int numCacheHits()

    Returns the number of dot product cache hits.

    Specified by:

    numCacheHits in class Kernel

    Returns:

    the number of dot product cache hits, or -1 if not supported by this 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