1  #region License Information


2  /* HeuristicLab


3  * Copyright (C) 20022019 Heuristic and Evolutionary Algorithms Laboratory (HEAL)


4  *


5  * This file is part of HeuristicLab.


6  *


7  * HeuristicLab is free software: you can redistribute it and/or modify


8  * it under the terms of the GNU General Public License as published by


9  * the Free Software Foundation, either version 3 of the License, or


10  * (at your option) any later version.


11  *


12  * HeuristicLab is distributed in the hope that it will be useful,


13  * but WITHOUT ANY WARRANTY; without even the implied warranty of


14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the


15  * GNU General Public License for more details.


16  *


17  * You should have received a copy of the GNU General Public License


18  * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.


19  */


20  #endregion


21  using System;


22  using HeuristicLab.Common;


23  using HeuristicLab.Core;


24  using HeuristicLab.Encodings.RealVectorEncoding;


25  using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;


26 


27  namespace HeuristicLab.Problems.TestFunctions.MultiObjective {


28  [Item("ZDT3", "ZDT3 function as defined in http://www.tik.ee.ethz.ch/sop/download/supplementary/testproblems/ [30.11.2015]")]


29  [StorableClass]


30  public class ZDT3 : ZDT {


31  protected override double GetBestKnownHypervolume(int objectives) {


32  return 128.77811613069076060;


33  }


34 


35  [StorableConstructor]


36  protected ZDT3(bool deserializing) : base(deserializing) { }


37  protected ZDT3(ZDT3 original, Cloner cloner) : base(original, cloner) { }


38  public override IDeepCloneable Clone(Cloner cloner) {


39  return new ZDT3(this, cloner);


40  }


41 


42  public ZDT3() : base() { }


43 


44  public override double[] Evaluate(RealVector r) {


45  double g = 0;


46  for (int i = 1; i < r.Length; i++) g += r[i];


47  g = 1.0 + 9.0 * g / (r.Length  1);


48  double d = r[0] / g;


49  double f0 = r[0];


50  double f1 = g * (1.0  Math.Sqrt(d)  d * Math.Sin(10 * Math.PI * r[0]));


51  return new double[] { f0, f1 };


52  }


53  }


54  }

