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source: trunk/sources/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/Potvin/Manipulators/PotvinOneLevelExchangeManipulator.cs @ 9456

Last change on this file since 9456 was 9456, checked in by swagner, 12 years ago

Updated copyright year and added some missing license headers (#1889)

File size: 2.8 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2013 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.Potvin {
27  [Item("PotvinOneLevelExchangeMainpulator", "The 1M operator which manipulates a VRP representation.  It is implemented as described in Potvin, J.-Y. and Bengio, S. (1996). The Vehicle Routing Problem with Time Windows - Part II: Genetic Search. INFORMS Journal of Computing, 8:165–172.")]
28  [StorableClass]
29  public sealed class PotvinOneLevelExchangeMainpulator : PotvinManipulator {
30    [StorableConstructor]
31    private PotvinOneLevelExchangeMainpulator(bool deserializing) : base(deserializing) { }
32
33    public PotvinOneLevelExchangeMainpulator() : base() { }
34
35    public override IDeepCloneable Clone(Cloner cloner) {
36      return new PotvinOneLevelExchangeMainpulator(this, cloner);
37    }
38
39    private PotvinOneLevelExchangeMainpulator(PotvinOneLevelExchangeMainpulator original, Cloner cloner)
40      : base(original, cloner) {
41    }
42
43    protected override void Manipulate(IRandom random, PotvinEncoding individual) {
44      bool allowInfeasible = AllowInfeasibleSolutions.Value.Value;
45
46      int selectedIndex = SelectRandomTourBiasedByLength(random, individual);
47      if (selectedIndex >= 0) {
48        Tour route1 =
49          individual.Tours[selectedIndex];
50
51        int count = route1.Stops.Count;
52        int i = 0;
53        while (i < count) {
54          int insertedRoute, insertedPlace;
55
56          int city = route1.Stops[i];
57          route1.Stops.Remove(city);
58
59          if (FindInsertionPlace(individual, city, selectedIndex, allowInfeasible, out insertedRoute, out insertedPlace)) {
60            individual.Tours[insertedRoute].Stops.Insert(insertedPlace, city);
61          } else {
62            route1.Stops.Insert(i, city);
63            i++;
64          }
65
66          count = route1.Stops.Count;
67        }
68      }
69    }
70  }
71}
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