NormalizedPolyKernel (original) (raw)

• java.lang.Object

• • weka.classifiers.functions.supportVector.Kernel
  • • weka.classifiers.functions.supportVector.CachedKernel
      • • weka.classifiers.functions.supportVector.PolyKernel
          * * weka.classifiers.functions.supportVector.NormalizedPolyKernel

• All Implemented Interfaces:
  java.io.Serializable, CapabilitiesHandler, OptionHandler, RevisionHandler

public class NormalizedPolyKernel
extends PolyKernel
The normalized polynomial kernel.
K(x,y) = <x,y>/sqrt(<x,x><y,y>) where <x,y> = PolyKernel(x,y)
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
The size of the cache (a prime number), 0 for full cache and
-1 to turn it off.
(default: 250007)
-E
The Exponent to use.
(default: 1.0)
-L
Use lower-order terms.
(default: no)
Version: Revision:1.8Revision: 1.8 Revision:1.8
Author:
Eibe Frank (eibe@cs.waikato.ac.nz)
See Also:
Serialized Form

• • Constructor Summary

  Constructors

  Constructor and Description
  NormalizedPolyKernel() default constructor - does nothing
  NormalizedPolyKernel(Instances dataset, int cacheSize, double exponent, boolean lowerOrder) Creates a new NormalizedPolyKernel instance.

  • Method Summary

  All Methods Instance Methods Concrete Methods

  Modifier and Type	Method and Description
  double	eval(int id1, int id2,Instance inst1) Computes the result of the kernel function for two instances.
  java.lang.String	getRevision() Returns the revision string.
  java.lang.String	globalInfo() Returns a string describing the kernel
  void	setExponent(double value) Sets the exponent value (must be different from 1.0).
  java.lang.String	toString() returns a string representation for the Kernel

     * ### Methods inherited from class weka.classifiers.functions.supportVector.[PolyKernel](../../../../weka/classifiers/functions/supportVector/PolyKernel.html "class in weka.classifiers.functions.supportVector")  
     `[clean](../../../../weka/classifiers/functions/supportVector/PolyKernel.html#clean--), [exponentTipText](../../../../weka/classifiers/functions/supportVector/PolyKernel.html#exponentTipText--), [getCapabilities](../../../../weka/classifiers/functions/supportVector/PolyKernel.html#getCapabilities--), [getExponent](../../../../weka/classifiers/functions/supportVector/PolyKernel.html#getExponent--), [getOptions](../../../../weka/classifiers/functions/supportVector/PolyKernel.html#getOptions--), [getUseLowerOrder](../../../../weka/classifiers/functions/supportVector/PolyKernel.html#getUseLowerOrder--), [listOptions](../../../../weka/classifiers/functions/supportVector/PolyKernel.html#listOptions--), [setOptions](../../../../weka/classifiers/functions/supportVector/PolyKernel.html#setOptions-java.lang.String:A-), [setUseLowerOrder](../../../../weka/classifiers/functions/supportVector/PolyKernel.html#setUseLowerOrder-boolean-), [useLowerOrderTipText](../../../../weka/classifiers/functions/supportVector/PolyKernel.html#useLowerOrderTipText--)`  
     * ### Methods inherited from class weka.classifiers.functions.supportVector.[CachedKernel](../../../../weka/classifiers/functions/supportVector/CachedKernel.html "class in weka.classifiers.functions.supportVector")  
     `[buildKernel](../../../../weka/classifiers/functions/supportVector/CachedKernel.html#buildKernel-weka.core.Instances-), [cacheSizeTipText](../../../../weka/classifiers/functions/supportVector/CachedKernel.html#cacheSizeTipText--), [getCacheSize](../../../../weka/classifiers/functions/supportVector/CachedKernel.html#getCacheSize--), [numCacheHits](../../../../weka/classifiers/functions/supportVector/CachedKernel.html#numCacheHits--), [numEvals](../../../../weka/classifiers/functions/supportVector/CachedKernel.html#numEvals--), [setCacheSize](../../../../weka/classifiers/functions/supportVector/CachedKernel.html#setCacheSize-int-)`  
     * ### Methods inherited from class weka.classifiers.functions.supportVector.[Kernel](../../../../weka/classifiers/functions/supportVector/Kernel.html "class in weka.classifiers.functions.supportVector")  
     `[checksTurnedOffTipText](../../../../weka/classifiers/functions/supportVector/Kernel.html#checksTurnedOffTipText--), [debugTipText](../../../../weka/classifiers/functions/supportVector/Kernel.html#debugTipText--), [forName](../../../../weka/classifiers/functions/supportVector/Kernel.html#forName-java.lang.String-java.lang.String:A-), [getChecksTurnedOff](../../../../weka/classifiers/functions/supportVector/Kernel.html#getChecksTurnedOff--), [getDebug](../../../../weka/classifiers/functions/supportVector/Kernel.html#getDebug--), [makeCopies](../../../../weka/classifiers/functions/supportVector/Kernel.html#makeCopies-weka.classifiers.functions.supportVector.Kernel-int-), [makeCopy](../../../../weka/classifiers/functions/supportVector/Kernel.html#makeCopy-weka.classifiers.functions.supportVector.Kernel-), [setChecksTurnedOff](../../../../weka/classifiers/functions/supportVector/Kernel.html#setChecksTurnedOff-boolean-), [setDebug](../../../../weka/classifiers/functions/supportVector/Kernel.html#setDebug-boolean-)`  
     * ### Methods inherited from class java.lang.Object  
     `equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

• • Constructor Detail

     * #### NormalizedPolyKernel  
     public NormalizedPolyKernel()  
     default constructor - does nothing  
     * #### NormalizedPolyKernel  
     public NormalizedPolyKernel([Instances](../../../../weka/core/Instances.html "class in weka.core") dataset,  
                                 int cacheSize,  
                                 double exponent,  
                                 boolean lowerOrder)  
                          throws java.lang.Exception  
     Creates a new `NormalizedPolyKernel` instance.  
     Parameters:  
     `dataset` \- the training dataset used.  
     `cacheSize` \- the size of the cache (a prime number)  
     `exponent` \- the exponent to use  
     `lowerOrder` \- whether to use lower-order terms  
     Throws:  
     `java.lang.Exception` \- if something goes wrong  

  • Method Detail

    * #### globalInfo  
    public java.lang.String globalInfo()  
    Returns a string describing the kernel  
    Overrides:  
    `[globalInfo](../../../../weka/classifiers/functions/supportVector/PolyKernel.html#globalInfo--)` in class `[PolyKernel](../../../../weka/classifiers/functions/supportVector/PolyKernel.html "class in weka.classifiers.functions.supportVector")`  
    Returns:  
    a description suitable for displaying in the explorer/experimenter gui  
    * #### eval  
    public double eval(int id1,  
                       int id2,  
                       [Instance](../../../../weka/core/Instance.html "class in weka.core") inst1)  
                throws java.lang.Exception  
    Computes the result of the kernel function for two instances. If id1 == -1, eval use inst1 instead of an instance in the dataset. Redefines the eval function of PolyKernel.  
    Overrides:  
    `[eval](../../../../weka/classifiers/functions/supportVector/CachedKernel.html#eval-int-int-weka.core.Instance-)` in class `[CachedKernel](../../../../weka/classifiers/functions/supportVector/CachedKernel.html "class in weka.classifiers.functions.supportVector")`  
    Parameters:  
    `id1` \- the index of the first instance in the dataset  
    `id2` \- the index of the second instance in the dataset  
    `inst1` \- the instance corresponding to id1 (used if id1 == -1)  
    Returns:  
    the result of the kernel function  
    Throws:  
    `java.lang.Exception` \- if something goes wrong  
    * #### setExponent  
    public void setExponent(double value)  
    Sets the exponent value (must be different from 1.0).  
    Overrides:  
    `[setExponent](../../../../weka/classifiers/functions/supportVector/PolyKernel.html#setExponent-double-)` in class `[PolyKernel](../../../../weka/classifiers/functions/supportVector/PolyKernel.html "class in weka.classifiers.functions.supportVector")`  
    Parameters:  
    `value` \- the exponent value  
    * #### toString  
    public java.lang.String toString()  
    returns a string representation for the Kernel  
    Overrides:  
    `[toString](../../../../weka/classifiers/functions/supportVector/PolyKernel.html#toString--)` in class `[PolyKernel](../../../../weka/classifiers/functions/supportVector/PolyKernel.html "class in weka.classifiers.functions.supportVector")`  
    Returns:  
    a string representaiton of the kernel  
    * #### getRevision  
    public java.lang.String getRevision()  
    Returns the revision string.  
    Specified by:  
    `[getRevision](../../../../weka/core/RevisionHandler.html#getRevision--)` in interface `[RevisionHandler](../../../../weka/core/RevisionHandler.html "interface in weka.core")`  
    Overrides:  
    `[getRevision](../../../../weka/classifiers/functions/supportVector/PolyKernel.html#getRevision--)` in class `[PolyKernel](../../../../weka/classifiers/functions/supportVector/PolyKernel.html "class in weka.classifiers.functions.supportVector")`  
    Returns:  
    the revision