org.uma.jmetal.qualityindicator.impl

Class Spread

java.lang.Object

org.uma.jmetal.util.naming.impl.SimpleDescribedEntity

org.uma.jmetal.qualityindicator.impl.Spread

All Implemented Interfaces:

Serializable, QualityIndicator, DescribedEntity

public class Spread
extends SimpleDescribedEntity
implements QualityIndicator

This class implements the spread quality indicator. It must be only to two bi-objective problem. Reference: Deb, K., Pratap, A., Agarwal, S., Meyarivan, T.: A fast and elitist multiobjective genetic algorithm: NSGA-II. IEEE Trans. on Evol. Computation 6 (2002) 182-197

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Spread() Constructor.

Method Summary

Modifier and Type	Method and Description
double	execute(Front paretoFrontApproximation, Front trueParetoFront)
double	execute(List<? extends Solution> paretoFrontApproximation, List<? extends Solution> trueParetoFront)
String	getName()
double	spread(Front front, Front trueParetoFront) Calculates the Spread metric.

Methods inherited from class org.uma.jmetal.util.naming.impl.SimpleDescribedEntity

getDescription, setDescription, setName, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.uma.jmetal.util.naming.DescribedEntity

getDescription

Constructor Detail

Spread

public Spread()

Constructor. Creates a new instance of a Spread object

Method Detail

execute

public double execute(Front paretoFrontApproximation,
                      Front trueParetoFront)

Specified by:

execute in interface QualityIndicator

execute

public double execute(List<? extends Solution> paretoFrontApproximation,
                      List<? extends Solution> trueParetoFront)

Specified by:

execute in interface QualityIndicator

spread

public double spread(Front front,
                     Front trueParetoFront)

Calculates the Spread metric.

Parameters:

front - The front.

trueParetoFront - The true pareto front.

getName

public String getName()

Specified by:

getName in interface QualityIndicator

Specified by:

getName in interface DescribedEntity

Overrides:

getName in class SimpleDescribedEntity

Returns:

the name of the DescribedEntity