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source: trunk/sources/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/GVR/Manipulators/GVRInversionManipulator.cs @ 12012

Last change on this file since 12012 was 12012, checked in by ascheibe, 9 years ago

#2212 merged r12008, r12009, r12010 back into trunk

File size: 2.1 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2015 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.Problems.VehicleRouting.Encodings.GVR {
27  [Item("GVRInversionManipulator", "An operator which manipulates a GVR representation by inverting a subroute. It is implemented as described in Pereira, F.B. et al (2002). GVR: a New Genetic Representation for the Vehicle Routing Problem. AICS 2002, LNAI 2464, pp. 95-102.")]
28  [StorableClass]
29  public sealed class GVRInversionManipulator : GVRManipulator {
30    [StorableConstructor]
31    private GVRInversionManipulator(bool deserializing) : base(deserializing) { }
32
33    public GVRInversionManipulator()
34      : base() {
35    }
36
37    public override IDeepCloneable Clone(Cloner cloner) {
38      return new GVRInversionManipulator(this, cloner);
39    }
40
41    private GVRInversionManipulator(GVRInversionManipulator original, Cloner cloner)
42      : base(original, cloner) {
43    }
44
45    protected override void Manipulate(IRandom random, GVREncoding individual) {
46      Tour tour = individual.Tours[random.Next(individual.Tours.Count)];
47      int breakPoint1 = random.Next(tour.Stops.Count);
48      int length = random.Next(1, tour.Stops.Count - breakPoint1 + 1);
49
50      tour.Stops.Reverse(breakPoint1, length);
51    }
52  }
53}
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