org.apache.ctakes.ytex.kernel.evaluator

Class NormKernel

java.lang.Object

org.apache.ctakes.ytex.kernel.evaluator.NormKernel

All Implemented Interfaces:

Kernel

public class NormKernel
extends Object
implements Kernel

Return norm of delegate kernel: k(x,y)/sqrt(k(x,x)*k(y,y). If the object is a org.apache.ctakes.ytex.kernel.Node, then save the norm in the node for future reference. else if cacheNorm = true, save the norm in the cache for future reference. If the delegate kernel is fast (e.g. it's using caching itself / trivial operation) caching the norm will slow things down.

Author:

vijay

Constructor Summary

Constructors

Constructor and Description
NormKernel()
NormKernel(Kernel delegateKernel)

Method Summary

Modifier and Type	Method and Description
double	evaluate(Object o1, Object o2)
net.sf.ehcache.CacheManager	getCacheManager()
Kernel	getDelegateKernel()
double	getNorm(Object o1) compute the norm.
void	init()
boolean	isCacheNorm()
void	setCacheManager(net.sf.ehcache.CacheManager cacheManager)
void	setCacheNorm(boolean cacheNorm)
void	setDelegateKernel(Kernel delegateKernel)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NormKernel

public NormKernel(Kernel delegateKernel)

NormKernel

public NormKernel()

Method Detail

isCacheNorm

public boolean isCacheNorm()

setCacheNorm

public void setCacheNorm(boolean cacheNorm)

getCacheManager

public net.sf.ehcache.CacheManager getCacheManager()

setCacheManager

public void setCacheManager(net.sf.ehcache.CacheManager cacheManager)

getDelegateKernel

public Kernel getDelegateKernel()

setDelegateKernel

public void setDelegateKernel(Kernel delegateKernel)

getNorm

public double getNorm(Object o1)

compute the norm.

Parameters:

o1 -

Returns:

evaluate

public double evaluate(Object o1,
                       Object o2)

Specified by:

evaluate in interface Kernel

init

public void init()