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java.lang.Objectweka.classifiers.functions.supportVector.Kernel
weka.classifiers.functions.supportVector.CachedKernel
public abstract class CachedKernel
Base class for RBFKernel and PolyKernel that implements a simple LRU. (least-recently-used) cache if the cache size is set to a value > 0. Otherwise it uses a full cache.
| Constructor Summary | |
|---|---|
CachedKernel()
default constructor - does nothing. |
|
| Method Summary | |
|---|---|
void |
buildKernel(Instances data)
builds the kernel with the given data. |
java.lang.String |
cacheSizeTipText()
Returns the tip text for this property |
void |
clean()
Frees the cache used by the kernel. |
double |
eval(int id1,
int id2,
Instance inst1)
Implements the abstract function of Kernel using the cache. |
int |
getCacheSize()
Gets the size of the cache |
java.lang.String[] |
getOptions()
Gets the current settings of the Kernel. |
java.util.Enumeration |
listOptions()
Returns an enumeration describing the available options. |
int |
numCacheHits()
Returns the number of cache hits on dot products. |
int |
numEvals()
Returns the number of time Eval has been called. |
void |
setCacheSize(int value)
Sets the size of the cache to use (a prime number) |
void |
setOptions(java.lang.String[] options)
Parses a given list of options. |
| Methods inherited from class weka.classifiers.functions.supportVector.Kernel |
|---|
checksTurnedOffTipText, debugTipText, forName, getCapabilities, getChecksTurnedOff, getDebug, getRevision, globalInfo, makeCopies, makeCopy, setChecksTurnedOff, setDebug |
| Methods inherited from class java.lang.Object |
|---|
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public CachedKernel()
| Method Detail |
|---|
public java.util.Enumeration listOptions()
listOptions in interface OptionHandlerlistOptions in class Kernel
public void setOptions(java.lang.String[] options)
throws java.lang.Exception
setOptions in interface OptionHandlersetOptions in class Kerneloptions - the list of options as an array of strings
java.lang.Exception - if an option is not supportedpublic java.lang.String[] getOptions()
getOptions in interface OptionHandlergetOptions in class Kernel
public double eval(int id1,
int id2,
Instance inst1)
throws java.lang.Exception
eval in class Kernelid1 - 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 int numEvals()
numEvals in class Kernelpublic int numCacheHits()
numCacheHits in class Kernelpublic void clean()
clean in class Kernelpublic void setCacheSize(int value)
value - the size of the cachepublic int getCacheSize()
public java.lang.String cacheSizeTipText()
public void buildKernel(Instances data)
throws java.lang.Exception
buildKernel in class Kerneldata - the data to base the kernel on
java.lang.Exception - if something goes wrong
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