edu.indiana.iucbrf.maintenance
Class UnusedRemovedMaintenance

java.lang.Object
  edu.indiana.iucbrf.maintenance.Maintenance
      edu.indiana.iucbrf.maintenance.UnusedRemovedMaintenance

All Implemented Interfaces:

java.io.Serializable

public class UnusedRemovedMaintenance
extends Maintenance

An implementation of some basic maintenance which may be sufficient for some systems. See method descriptions for details.

See Also:

Serialized Form

Field Summary

Fields inherited from class edu.indiana.iucbrf.maintenance.Maintenance

checkRemoveFrequency

Constructor Summary

UnusedRemovedMaintenance()
Creates new UnusedRemovedMaintenance

Method Summary

boolean	shouldAddCase(Case currentCase, SolutionQuality quality, RetrievalResults retrieved, CaseBase CB, PerformanceMonitor monitor) Determine whether or not a case should be added to the case base.
boolean	shouldRemoveCase(Case currentCase, CaseBase CB, PerformanceMonitor monitor) Determine whether or not a case should be removed from the case base.

Methods inherited from class edu.indiana.iucbrf.maintenance.Maintenance

getCheckRemoveFrequency, removeUnneededCases, setCheckRemoveFrequency

Methods inherited from class java.lang.Object

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

Constructor Detail

UnusedRemovedMaintenance

public UnusedRemovedMaintenance()

Creates new UnusedRemovedMaintenance

Method Detail

shouldRemoveCase

public boolean shouldRemoveCase(Case currentCase,
                                CaseBase CB,
                                PerformanceMonitor monitor)

Determine whether or not a case should be removed from the case base. The implementation here is as follows:
For s cases in the case base, a single case should be used at least once in every s episodes, since the time it was added to the case base. If this has not occurred for a case, then that case is considered irrelevant, and is removed.

Specified by:

shouldRemoveCase in class Maintenance

Parameters:

currentCase - The case under consideration.

CB - The case base from which the case might need to be removed.

monitor - The performance monitor for this system.

Returns:

true if case should be removed, false otherwise

shouldAddCase

public boolean shouldAddCase(Case currentCase,
                             SolutionQuality quality,
                             RetrievalResults retrieved,
                             CaseBase CB,
                             PerformanceMonitor monitor)

Determine whether or not a case should be added to the case base. For this implementation, a case is always added.

Specified by:

shouldAddCase in class Maintenance

Parameters:

currentCase - The case under consideration.

Quality - The Quality of the quality of the solution.

CB - The case base to which the case might be added.

monitor - The performance monitor for this system.

Returns:

true if case should be added, false otherwise