Package org.moeaframework.problem.misc

Class OKA2

java.lang.Object

org.moeaframework.problem.AbstractProblem

org.moeaframework.problem.misc.OKA2

All Implemented Interfaces:

AutoCloseable, Problem

public class OKA2
extends AbstractProblem

Tatsuya Okabe's OKA2 test problem. The probability density of points becomes more sparse the closer a population gets to the Pareto front.

References:

1. Okabe, T., et al. "On Test Functions for Evolutionary Multi-Objective Optimization." Parallel Problem Solving from Nature, pp. 792-802, 2004.

Field Summary

Fields inherited from class org.moeaframework.problem.AbstractProblem

numberOfConstraints, numberOfObjectives, numberOfVariables

Constructor Summary

Constructors

Constructor	Description
OKA2()	Constructs the OKA2 problem.

Method Summary

Modifier and Type	Method	Description
void	evaluate(Solution solution)	Evaluates the solution, updating the solution's objectives in place.
Solution	newSolution()	Returns a new solution for this problem.

Methods inherited from class org.moeaframework.problem.AbstractProblem

close, getName, getNumberOfConstraints, getNumberOfObjectives, getNumberOfVariables

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.moeaframework.core.Problem

isType

Constructor Details

OKA2

public OKA2()

Constructs the OKA2 problem.

Method Details

evaluate

public void evaluate(Solution solution)

Description copied from interface: Problem

Evaluates the solution, updating the solution's objectives in place. Algorithms must explicitly call this method when appropriate to evaluate new solutions or reevaluate modified solutions.

Parameters:

solution - the solution to be evaluated

newSolution

public Solution newSolution()

Description copied from interface: Problem

Returns a new solution for this problem. Implementations must initialize the variables so that the valid range of values is defined, but typically leave the actual value at a default or undefined state.

Returns:

a new solution for this problem