org.dbe.eve.fff.impl
Class DefaultAgregator

java.lang.Object
  org.dbe.eve.fff.impl.DefaultAgregator

All Implemented Interfaces:

FitnessFunction, FitnessFunctionAggregator

public class DefaultAgregator
extends java.lang.Object
implements FitnessFunctionAggregator

A "how-to" implementation example for a FitnessFunctionAggregator. In the evaluate method, all FitnessFunctions registered wihtin the Framework are combined to produce one single FitnessValue out of several FitnessFunctions. In this ecample, the overall fitness is just the sum of all evaulation results of the simgle fitness functions. If necessary, different mechanisms of combining distinct results can be envisioned.

Author:

Claudius

Field Summary

(package private) FitnessFunctionFramework

framework

Constructor Summary

DefaultAgregator()

Method Summary

Fitness	evaluate(Solution solution) Evaluate the fitness function with the indicated solution.
void	init(SBVRDescription description, FitnessFunctionContext context) Init this fitness funcion.
void	setFramework(FitnessFunctionFramework framework)

Methods inherited from class java.lang.Object

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

Field Detail

framework

FitnessFunctionFramework framework

Constructor Detail

DefaultAgregator

public DefaultAgregator()

Method Detail

setFramework

public void setFramework(FitnessFunctionFramework framework)

Specified by:

setFramework in interface FitnessFunctionAggregator

init

public void init(SBVRDescription description,
                 FitnessFunctionContext context)

Description copied from interface: FitnessFunction

Init this fitness funcion. At this moment, we can get any parameter from the FitnessFunctionContext of store this object in order to get the parameters later, at "evaluation" time. This will depend if we can perform all evaluations taking into account the "global system" progress or not.

Specified by:

init in interface FitnessFunction

Parameters:

description - The request that acts as the evaluation counterpart

context - The FitnessFunctionContext

evaluate

public Fitness evaluate(Solution solution)

Description copied from interface: FitnessFunction

Evaluate the fitness function with the indicated solution.

Specified by:

evaluate in interface FitnessFunction

Parameters:

solution - The Solution that should be evaluated

Returns:

fitness The calculated fitness value