weka.classifiers.meta.multisearch
Class PerformanceCache

java.lang.Object
  weka.classifiers.meta.multisearch.PerformanceCache

All Implemented Interfaces:

Serializable

public class PerformanceCache
extends Object
implements Serializable

Represents a simple cache for performance objects.

Version:

$Revision: 5156 $

Author:

fracpete (fracpete at waikato dot ac dot nz)

See Also:

Serialized Form

Field Summary

protected Hashtable<String,Performance>

m_Cache the cache for points in the space that got calculated.

Constructor Summary

PerformanceCache()

Method Summary

void	add(int cv, Performance p) adds the performance to the cache.
Performance	get(int cv, Point<Object> values) returns a cached performance object, null if not yet in the cache.
protected String	getID(int cv, Point<Object> values) returns the ID string for a cache item.
boolean	isCached(int cv, Point<Object> values) checks whether the point was already calculated once.
String	toString() returns a string representation of the cache.

Methods inherited from class java.lang.Object

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

Field Detail

m_Cache

protected Hashtable<String,Performance> m_Cache

the cache for points in the space that got calculated.

Constructor Detail

PerformanceCache

public PerformanceCache()

Method Detail

getID

protected String getID(int cv,
                       Point<Object> values)

returns the ID string for a cache item.

Parameters:

cv - the number of folds in the cross-validation

values - the point in the space

Returns:

the ID string

isCached

public boolean isCached(int cv,
                        Point<Object> values)

checks whether the point was already calculated once.

Parameters:

cv - the number of folds in the cross-validation

values - the point in the space

Returns:

true if the value is already cached

get

public Performance get(int cv,
                       Point<Object> values)

returns a cached performance object, null if not yet in the cache.

Parameters:

cv - the number of folds in the cross-validation

values - the point in the space

Returns:

the cached performance item, null if not in cache

add

public void add(int cv,
                Performance p)

adds the performance to the cache.

Parameters:

cv - the number of folds in the cross-validation

p - the performance object to store

toString

public String toString()

returns a string representation of the cache.

Overrides:

toString in class Object

Returns:

the string representation of the cache