CachingKernel (biojava-legacy 1.9.5 API)

java.lang.Object
- org.biojava.stats.svm.NestedKernel
- - org.biojava.stats.svm.CachingKernel

All Implemented Interfaces:

Serializable, SVMKernel
```
public class CachingKernel
extends NestedKernel
```
Caches the results of a nested kernel so that k(a, b) need only be calculated once.

This kernel is thread-safe. However, care must be taken when setting the nested kernel that no other thread is retrieving values at the same time. This would cause a race condition in which the newly flushed cache may contain a value from the previous kernel.

Author:

Thomas Down, Matthew Pocock

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

CachingKernel()

CachingKernel(SVMKernel k)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`double`	`evaluate(Object x, Object y)`	Return the dot product of two vectors in an arbitrary feature space.
`void`	`setNestedKernel(SVMKernel k)`	Set the SVMKernel to nest to k.
`String`	`toString()`

Methods inherited from class org.biojava.stats.svm.NestedKernel
getNestedKernel

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - CachingKernel
```
public CachingKernel()
```
  - CachingKernel
```
public CachingKernel(SVMKernel k)
```
- Method Detail
  - setNestedKernel
```
public void setNestedKernel(SVMKernel k)
```
    Description copied from class: NestedKernel
    
    Set the SVMKernel to nest to k.
    
    Overrides:
    
    setNestedKernel in class NestedKernel
    
    Parameters:
    
    k - the SVMKernel to nest.
  - evaluate
```
public double evaluate(Object x,
                       Object y)
```
    Description copied from interface: SVMKernel
    
    Return the dot product of two vectors in an arbitrary feature space. In this implementation, the `vectors' can actually be arbitrary objects.
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object