org.uma.jmetal.util.comparator.impl

Class OverallConstraintViolationComparator<S extends Solution<?>>

java.lang.Object

org.uma.jmetal.util.comparator.impl.OverallConstraintViolationComparator<S>

All Implemented Interfaces:

Comparator<S>, ConstraintViolationComparator<S>

public class OverallConstraintViolationComparator<S extends Solution<?>>
extends Object
implements ConstraintViolationComparator<S>

This class implements a Comparator (a method for comparing Solution objects) based on the overall constraint violation of the solutions, as done in NSGA-II.

Author:

Antonio J. Nebro

Constructor Summary

Constructors

Constructor and Description
OverallConstraintViolationComparator() Constructor

Method Summary

Modifier and Type	Method and Description
int	compare(S solution1, S solution2) Compares two solutions.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

OverallConstraintViolationComparator

public OverallConstraintViolationComparator()

Constructor

Method Detail

compare

public int compare(S solution1,
                   S solution2)

Compares two solutions. If the solutions has no constraints the method return 0

Specified by:

compare in interface Comparator<S extends Solution<?>>

Specified by:

compare in interface ConstraintViolationComparator<S extends Solution<?>>

Parameters:

solution1 - Object representing the first Solution.

solution2 - Object representing the second Solution.

Returns:

-1, or 0, or 1 if o1 is less than, equal, or greater than o2, respectively.