Package org.uma.jmetal.qualityindicator.impl

Class ErrorRatio

java.lang.Object

org.uma.jmetal.qualityindicator.QualityIndicator

org.uma.jmetal.qualityindicator.impl.ErrorRatio

public class ErrorRatio
extends QualityIndicator

The Error Ratio (ER) quality indicator reports the ratio of solutions in a front of points that are not members of the true Pareto front. NOTE: the indicator merely checks if the solutions in the front are not members of the second front. No assumption is made about the second front is a true Pareto front, i.e, the front could contain solutions that dominate some of those of the supposed Pareto front. It is a responsibility of the caller to ensure that this does not happen.

Author:

Antonio J. Nebro TODO: using an epsilon value

Constructor Summary

Constructors

Constructor	Description
ErrorRatio()	Constructor
ErrorRatio(double[][] referenceFront)	Constructor
ErrorRatio(String referenceFrontFile)	Constructor

Method Summary

Modifier and Type	Method	Description
double	compute(double[][] front)	Evaluate() method
String	description()
boolean	isTheLowerTheIndicatorValueTheBetter()	Returns true if lower indicator values are preferred and false otherwise
String	name()
QualityIndicator	newInstance()
void	referenceFront(double[][] referenceFront)

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

referenceFront

Methods inherited from class java.lang.Object

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

Constructor Details

ErrorRatio

public ErrorRatio()

Constructor

ErrorRatio

public ErrorRatio(String referenceFrontFile)
           throws IOException

Constructor

Parameters:

referenceFrontFile -

Throws:

FileNotFoundException

IOException

ErrorRatio

public ErrorRatio(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:

referenceFront

public void referenceFront(double[][] referenceFront)

Overrides:

referenceFront in class QualityIndicator

description

public String description()

Specified by:

description in class QualityIndicator

name

public String name()

Specified by:

name 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