source: trunk/HeuristicLab.Optimization.Operators/3.3/SquareRootDiscreteDoubleValueModifier.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 System;
23using HeuristicLab.Common;
24using HeuristicLab.Core;
25using HEAL.Attic;
26
27namespace HeuristicLab.Optimization.Operators {
28  /// <summary>
29  /// Modifies the value by square rooted fall (fast fall initially, slow fall to the end) or rise (fast rise initially, slow rise to the end).
30  /// </summary>
31  [Item("SquareRootDiscreteDoubleValueModifier", "Modifies the value by square rooted fall (fast fall initially, slow fall to the end) or rise (fast rise initially, slow rise to the end).")]
32  [StorableType("0D62E89E-87D9-4F4F-889E-D64CB4CCBF6E")]
33  public class SquareRootDiscreteDoubleValueModifier : DiscreteDoubleValueModifier {
34    [StorableConstructor]
35    protected SquareRootDiscreteDoubleValueModifier(StorableConstructorFlag _) : base(_) { }
36    protected SquareRootDiscreteDoubleValueModifier(SquareRootDiscreteDoubleValueModifier original, Cloner cloner) : base(original, cloner) { }
37    public SquareRootDiscreteDoubleValueModifier() : base() { }
38
39    public override IDeepCloneable Clone(Cloner cloner) {
40      return new SquareRootDiscreteDoubleValueModifier(this, cloner);
41    }
42
43    protected override double Modify(double value, double startValue, double endValue, int index, int startIndex, int endIndex) {
44      return Calculate(value, startValue, endValue, index, startIndex, endIndex);
45    }
46
47    public static double Calculate(double value, double startValue, double endValue, int index, int startIndex, int endIndex) {
48      double a = (endValue - startValue) / Math.Sqrt(endIndex - startIndex);
49      return a * Math.Sqrt(index - startIndex) + startValue;
50    }
51  }
52}
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