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The MOEA Framework Maven Distribution
/* Copyright 2009-2016 David Hadka
*
* This file is part of the MOEA Framework.
*
* The MOEA Framework is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or (at your
* option) any later version.
*
* The MOEA Framework is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the MOEA Framework. If not, see .
*/
package org.moeaframework.problem.CEC2009;
import org.moeaframework.core.Solution;
import org.moeaframework.core.variable.EncodingUtils;
import org.moeaframework.core.variable.RealVariable;
import org.moeaframework.problem.AbstractProblem;
/**
* The constrained CF7 test problem from the CEC 2009 special session and
* competition.
*/
public class CF7 extends AbstractProblem {
/**
* Constructs a CF7 test problem with 10 decision variables.
*/
public CF7() {
this(10);
}
/**
* Constructs a CF7 test problem with the specified number of decision
* variables.
*
* @param numberOfVariables the number of decision variables
*/
public CF7(int numberOfVariables) {
super(numberOfVariables, 2, 2);
}
@Override
public void evaluate(Solution solution) {
double[] x = EncodingUtils.getReal(solution);
double[] f = new double[2];
double[] c = new double[2];
CEC2009.CF7(x, f, c, numberOfVariables);
solution.setObjectives(f);
solution.setConstraint(0, c[0] >= 0.0 ? 0.0 : c[0]);
solution.setConstraint(1, c[1] >= 0.0 ? 0.0 : c[1]);
}
@Override
public Solution newSolution() {
Solution solution = new Solution(numberOfVariables, 2, 2);
solution.setVariable(0, new RealVariable(0.0, 1.0));
for (int i = 1; i < numberOfVariables; i++) {
solution.setVariable(i, new RealVariable(-2.0, 2.0));
}
return solution;
}
}