#region License Information
/* HeuristicLab
* Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
*
* This file is part of HeuristicLab.
*
* HeuristicLab is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* HeuristicLab 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with HeuristicLab. If not, see .
*/
#endregion
using System;
using System.Collections.Generic;
using System.Text;
namespace HeuristicLab.TestFunctions {
///
/// Beale Function
/// Domain: [-4.5 , 4.5]^2
/// Optimum: 0.0 at (3.0, 0.5)
///
public class BealeEvaluator : TestFunctionEvaluatorBase {
///
public override string Description {
get { return
@"Beale Function
Domain: [-4.5 , 4.5]^2
Optimum: 0.0 at (3.0, 0.5)";
}
}
///
/// Evaluates the test function for a specific .
///
/// N-dimensional point for which the test function should be evaluated.
/// The result value of the Beale function at the given point.
public static double Apply(double[] point) {
return Math.Pow(1.5 - point[0] * (1 - point[1]), 2) + Math.Pow(2.25 - point[0] * (1 - (point[1] * point[1])), 2) + Math.Pow((2.625 - point[0] * (1 - (point[1] * point[1] * point[1]))), 2);
}
///
/// Evaluates the test function for a specific .
///
/// Calls .
/// N-dimensional point for which the test function should be evaluated.
/// The result value of the Beale function at the given point.
protected override double EvaluateFunction(double[] point) {
return Apply(point);
}
}
}