Package org.moeaframework.core.fitness

Class CrowdingDistanceFitnessEvaluator

java.lang.Object

org.moeaframework.core.fitness.CrowdingDistanceFitnessEvaluator

All Implemented Interfaces:

FitnessEvaluator

public class CrowdingDistanceFitnessEvaluator
extends Object
implements FitnessEvaluator

Assigns fitness values based on the crowding distance from fast non-dominated sorting.

Constructor Summary

Constructors

Constructor	Description
CrowdingDistanceFitnessEvaluator()	Constructs a new crowding distance fitness evaluator.

Method Summary

Modifier and Type	Method	Description
boolean	areLargerValuesPreferred()	Returns true if larger fitness values are preferred; otherwise smaller fitness values are preferred.
void	evaluate(Population population)	Evaluates the fitness of solutions in the population, updating the Fitness attribute.

Methods inherited from class java.lang.Object

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

Constructor Details

CrowdingDistanceFitnessEvaluator

public CrowdingDistanceFitnessEvaluator()

Constructs a new crowding distance fitness evaluator.

Method Details

evaluate

public void evaluate(Population population)

Description copied from interface: FitnessEvaluator

Evaluates the fitness of solutions in the population, updating the Fitness attribute.

Specified by:

evaluate in interface FitnessEvaluator

Parameters:

population - the population to be evaluated

areLargerValuesPreferred

public boolean areLargerValuesPreferred()

Description copied from interface: FitnessEvaluator

Returns true if larger fitness values are preferred; otherwise smaller fitness values are preferred.

Specified by:

areLargerValuesPreferred in interface FitnessEvaluator

Returns:

true if larger fitness values are preferred; otherwise smaller fitness values are preferred