org.uma.jmetal.qualityindicator.impl

Class GenerationalDistance<S extends Solution<?>>

java.lang.Object

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

org.uma.jmetal.qualityindicator.impl.GenericIndicator<S>

org.uma.jmetal.qualityindicator.impl.GenerationalDistance<S>

All Implemented Interfaces:

Serializable, QualityIndicator<List<S>,Double>, DescribedEntity

public class GenerationalDistance<S extends Solution<?>>
extends GenericIndicator<S>

This class implements the generational distance indicator. Reference: Van Veldhuizen, D.A., Lamont, G.B.: Multiobjective Evolutionary Algorithm Research: A History and Analysis. Technical Report TR-98-03, Dept. Elec. Comput. Eng., Air Force Inst. Technol. (1998)

Author:

Antonio J. Nebro , Juan J. Durillo

See Also:

Serialized Form

Field Summary

Fields inherited from class org.uma.jmetal.qualityindicator.impl.GenericIndicator

referenceParetoFront

Constructor Summary

Constructors

Constructor and Description
GenerationalDistance() Default constructor
GenerationalDistance(Front referenceParetoFront) Constructor
GenerationalDistance(String referenceParetoFrontFile) Constructor
GenerationalDistance(String referenceParetoFrontFile, double p) Constructor

Method Summary

Modifier and Type	Method and Description
Double	evaluate(List<S> solutionList) Evaluate() method
double	generationalDistance(Front front, Front referenceFront) Returns the generational distance value for a given front
String	getDescription()
String	getName()
boolean	isTheLowerTheIndicatorValueTheBetter() This method returns true if lower indicator values are preferred and false otherwise

Methods inherited from class org.uma.jmetal.qualityindicator.impl.GenericIndicator

setReferenceParetoFront, setReferenceParetoFront

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

setDescription, setName, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

GenerationalDistance

public GenerationalDistance()

Default constructor

GenerationalDistance

public GenerationalDistance(String referenceParetoFrontFile,
                            double p)
                     throws FileNotFoundException

Constructor

Parameters:

referenceParetoFrontFile -

p -

Throws:

FileNotFoundException

GenerationalDistance

public GenerationalDistance(String referenceParetoFrontFile)
                     throws FileNotFoundException

Constructor

Parameters:

referenceParetoFrontFile -

Throws:

FileNotFoundException

GenerationalDistance

public GenerationalDistance(Front referenceParetoFront)

Constructor

Parameters:

referenceParetoFront -

Method Detail

evaluate

public Double evaluate(List<S> solutionList)

Evaluate() method

Parameters:

solutionList -

Returns:

generationalDistance

public double generationalDistance(Front front,
                                   Front referenceFront)

Returns the generational distance value for a given front

Parameters:

front - The front

referenceFront - The reference pareto front

getName

public String getName()

Specified by:

getName in interface DescribedEntity

Overrides:

getName in class SimpleDescribedEntity

Returns:

the name of the DescribedEntity

getDescription

public String getDescription()

Specified by:

getDescription in interface DescribedEntity

Overrides:

getDescription in class SimpleDescribedEntity

Returns:

the description of the DescribedEntity

isTheLowerTheIndicatorValueTheBetter

public boolean isTheLowerTheIndicatorValueTheBetter()

Description copied from class: GenericIndicator

This method returns true if lower indicator values are preferred and false otherwise

Specified by:

isTheLowerTheIndicatorValueTheBetter in class GenericIndicator<S extends Solution<?>>

Returns: