source: trunk/HeuristicLab.Optimization.Operators/3.3/QuadraticDiscreteDoubleValueModifier.cs @ 17729

Last change on this file since 17729 was 17729, checked in by dpiringe, 23 months ago

#3081

  • added static calculation method in:
    • ExponentialDiscreteDoubleValueModifier
    • GeneralizedExponentialDiscreteDoubleValueModifier
    • LinearDiscreteDoubleValueModifier
    • QuadraticDiscreteDoubleValueModifier
    • SquareRootDiscreteDoubleValueModifier
File size: 2.4 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 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
22using HeuristicLab.Common;
23using HeuristicLab.Core;
24using HEAL.Attic;
25
26namespace HeuristicLab.Optimization.Operators {
27  /// <summary>
28  /// Modifies the value by quadratic fall (slow fall initially, fast fall to the end) or rise (slow rise initally, fast rise to the end).
29  /// </summary>
30  [Item("QuadraticDiscreteDoubleValueModifier", "Modifies the value by quadratic fall (slow fall initially, fast fall to the end) or rise (slow rise initally, fast rise to the end).")]
31  [StorableType("49CADD22-7074-4ADB-AA7B-36D03115FB1A")]
32  public class QuadraticDiscreteDoubleValueModifier : DiscreteDoubleValueModifier {
33    [StorableConstructor]
34    protected QuadraticDiscreteDoubleValueModifier(StorableConstructorFlag _) : base(_) { }
35    protected QuadraticDiscreteDoubleValueModifier(QuadraticDiscreteDoubleValueModifier original, Cloner cloner) : base(original, cloner) { }
36    public QuadraticDiscreteDoubleValueModifier() : base() { }
37
38    public override IDeepCloneable Clone(Cloner cloner) {
39      return new QuadraticDiscreteDoubleValueModifier(this, cloner);
40    }
41
42    protected override double Modify(double value, double startValue, double endValue, int index, int startIndex, int endIndex) {
43      return Calculate(value, startValue, endValue, index, startIndex, endIndex);
44    }
45
46    public static double Calculate(double value, double startValue, double endValue, int index, int startIndex, int endIndex) {
47      double a = (endValue - startValue) / ((endIndex - startIndex) * (endIndex - startIndex));
48      return a * (index - startIndex) * (index - startIndex) + startValue;
49    }
50  }
51}
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