Free cookie consent management tool by TermsFeed Policy Generator

source: trunk/sources/HeuristicLab.Encodings.RealVectorEncoding/3.3/ParticleOperators/SPSO2011VelocityInitializer.cs @ 15583

Last change on this file since 15583 was 15583, checked in by swagner, 7 years ago

#2640: Updated year of copyrights in license headers

File size: 2.3 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2018 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 HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
25
26namespace HeuristicLab.Encodings.RealVectorEncoding {
27  [Item("Velocity Initializer (SPSO 2011)", "Initializes the velocity vector.")]
28  [StorableClass]
29  public class SPSO2011VelocityInitializer : SPSOVelocityInitializer {
30   
31    #region Construction & Cloning
32    [StorableConstructor]
33    protected SPSO2011VelocityInitializer(bool deserializing) : base(deserializing) { }
34    protected SPSO2011VelocityInitializer(SPSO2011VelocityInitializer original, Cloner cloner) : base(original, cloner) { }
35    public SPSO2011VelocityInitializer() : base() { }
36    public override IDeepCloneable Clone(Cloner cloner) {
37      return new SPSO2011VelocityInitializer(this, cloner);
38    }
39    #endregion
40
41    public override IOperation Apply() {
42      var random = RandomParameter.ActualValue;
43      var bounds = BoundsParameter.ActualValue;
44      var position = RealVectorParameter.ActualValue;
45      var velocity = new RealVector(position.Length);
46      for (var i = 0; i < velocity.Length; i++) {
47        var lower = (bounds[i % bounds.Rows, 0] - position[i]);
48        var upper = (bounds[i % bounds.Rows, 1] - position[i]);
49        velocity[i] = lower + random.NextDouble() * (upper - lower); // SPSO 2011
50      }
51      VelocityParameter.ActualValue = velocity;
52      return base.Apply();
53    }
54  }
55}
Note: See TracBrowser for help on using the repository browser.