org.uma.jmetal.qualityindicator.impl

Class Spread<Evaluate extends List<? extends Solution<?>>>

java.lang.Object

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

org.uma.jmetal.qualityindicator.impl.Spread<Evaluate>

All Implemented Interfaces:

QualityIndicator<Evaluate,Double>, DescribedEntity

public class Spread<Evaluate extends List<? extends Solution<?>>>
extends SimpleDescribedEntity
implements QualityIndicator<Evaluate,Double>

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

Author:

Antonio J. Nebro , Juan J. Durillo

Constructor Summary

Constructors

Constructor and Description
Spread(Front referenceParetoFront) Constructor
Spread(String referenceParetoFrontFile) Constructor

Method Summary

Modifier and Type	Method and Description
Double	evaluate(Evaluate solutionList) Evaluate() method
String	getName()
double	spread(Front front, Front referenceFront) 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(String referenceParetoFrontFile)
       throws FileNotFoundException

Constructor

Parameters:

referenceParetoFrontFile -

Throws:

FileNotFoundException

Spread

public Spread(Front referenceParetoFront)

Constructor

Parameters:

referenceParetoFront -

Throws:

FileNotFoundException

Method Detail

evaluate

public Double evaluate(Evaluate solutionList)

Evaluate() method

Specified by:

evaluate in interface QualityIndicator<Evaluate extends List<? extends Solution<?>>,Double>

Parameters:

solutionList -

Returns:

spread

public double spread(Front front,
                     Front referenceFront)

Calculates the Spread metric.

Parameters:

front - The front.

referenceFront - The true pareto front.

getName

public String getName()

Specified by:

getName in interface QualityIndicator<Evaluate extends List<? extends Solution<?>>,Double>

Specified by:

getName in interface DescribedEntity

Overrides:

getName in class SimpleDescribedEntity

Returns:

the name of the DescribedEntity