Package org.uma.jmetal.qualityindicator.impl

Class GenerationalDistance

java.lang.Object

org.uma.jmetal.qualityindicator.QualityIndicator

org.uma.jmetal.qualityindicator.impl.GenerationalDistance

public class GenerationalDistance
extends QualityIndicator

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

Field Summary

Fields inherited from class org.uma.jmetal.qualityindicator.QualityIndicator

referenceFront

Constructor Summary

Constructors

Constructor	Description
GenerationalDistance()	Default constructor
GenerationalDistance(double[][] referenceFront)	Constructor

Method Summary

Modifier and Type	Method	Description
double	compute(double[][] front)	Evaluate() method
String	description()
double	generationalDistance(double[][] front, double[][] referenceFront)	Returns the generational distance value for a given front
boolean	isTheLowerTheIndicatorValueTheBetter()	Returns true if lower indicator values are preferred and false otherwise
String	name()
QualityIndicator	newInstance()

Methods inherited from class org.uma.jmetal.qualityindicator.QualityIndicator

referenceFront, referenceFront

Methods inherited from class java.lang.Object

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

Constructor Details

GenerationalDistance

public GenerationalDistance()

Default constructor

GenerationalDistance

public GenerationalDistance(double[][] referenceFront)

Constructor

Parameters:

referenceFront -

Method Details

newInstance

public QualityIndicator newInstance()

Specified by:

newInstance in class QualityIndicator

compute

public double compute(double[][] front)

Evaluate() method

Specified by:

compute in class QualityIndicator

Parameters:

front -

Returns:

generationalDistance

public double generationalDistance(double[][] front,
 double[][] referenceFront)

Returns the generational distance value for a given front

Parameters:

front - The front

referenceFront - The reference pareto front

name

public String name()

Specified by:

name in class QualityIndicator

description

public String description()

Specified by:

description in class QualityIndicator

isTheLowerTheIndicatorValueTheBetter

public boolean isTheLowerTheIndicatorValueTheBetter()

Description copied from class: QualityIndicator

Returns true if lower indicator values are preferred and false otherwise

Specified by:

isTheLowerTheIndicatorValueTheBetter in class QualityIndicator