#region License Information
/* HeuristicLab
* Copyright (C) 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 HeuristicLab.Common;
using HeuristicLab.Core;
using HEAL.Attic;
namespace HeuristicLab.Optimization.Operators {
///
/// 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).
///
[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).")]
[StorableType("0D62E89E-87D9-4F4F-889E-D64CB4CCBF6E")]
public class SquareRootDiscreteDoubleValueModifier : DiscreteDoubleValueModifier {
[StorableConstructor]
protected SquareRootDiscreteDoubleValueModifier(StorableConstructorFlag _) : base(_) { }
protected SquareRootDiscreteDoubleValueModifier(SquareRootDiscreteDoubleValueModifier original, Cloner cloner) : base(original, cloner) { }
public SquareRootDiscreteDoubleValueModifier() : base() { }
public override IDeepCloneable Clone(Cloner cloner) {
return new SquareRootDiscreteDoubleValueModifier(this, cloner);
}
protected override double Modify(double value, double startValue, double endValue, int index, int startIndex, int endIndex) {
return Calculate(value, startValue, endValue, index, startIndex, endIndex);
}
public static double Calculate(double value, double startValue, double endValue, int index, int startIndex, int endIndex) {
double a = (endValue - startValue) / Math.Sqrt(endIndex - startIndex);
return a * Math.Sqrt(index - startIndex) + startValue;
}
}
}