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java.lang.Objectweka.classifiers.functions.supportVector.Kernel
weka.classifiers.functions.supportVector.CachedKernel
weka.classifiers.functions.supportVector.PolyKernel
weka.classifiers.functions.supportVector.NormalizedPolyKernel
public class NormalizedPolyKernel
The normalized polynomial kernel.
K(x,y) = <x,y>/sqrt(<x,x><y,y>) where <x,y> = PolyKernel(x,y)
-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)
-E <num> The Exponent to use. (default: 1.0)
-L Use lower-order terms. (default: no)
| Constructor Summary | |
|---|---|
NormalizedPolyKernel()
default constructor - does nothing |
|
NormalizedPolyKernel(Instances dataset,
int cacheSize,
double exponent,
boolean lowerOrder)
Creates a new NormalizedPolyKernel instance. |
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| Method Summary | |
|---|---|
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 |
|---|
exponentTipText, getCapabilities, getExponent, getOptions, getUseLowerOrder, listOptions, setOptions, setUseLowerOrder, useLowerOrderTipText |
| Methods inherited from class weka.classifiers.functions.supportVector.CachedKernel |
|---|
buildKernel, cacheSizeTipText, clean, 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 |
|---|
public NormalizedPolyKernel()
public NormalizedPolyKernel(Instances dataset,
int cacheSize,
double exponent,
boolean lowerOrder)
throws java.lang.Exception
NormalizedPolyKernel instance.
dataset - the training dataset used.cacheSize - the size of the cache (a prime number)exponent - the exponent to uselowerOrder - whether to use lower-order terms
java.lang.Exception - if something goes wrong| Method Detail |
|---|
public java.lang.String globalInfo()
globalInfo in class PolyKernel
public double eval(int id1,
int id2,
Instance inst1)
throws java.lang.Exception
eval in class CachedKernelid1 - the index of the first instance in the datasetid2 - the index of the second instance in the datasetinst1 - the instance corresponding to id1 (used if id1 == -1)
java.lang.Exception - if something goes wrongpublic void setExponent(double value)
setExponent in class PolyKernelvalue - the exponent valuepublic java.lang.String toString()
toString in class PolyKernelpublic java.lang.String getRevision()
getRevision in interface RevisionHandlergetRevision in class PolyKernel
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