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source: branches/VRP/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/Alba/Manipulators/AlbaCustomerInsertionManipulator.cs @ 4752

Last change on this file since 4752 was 4752, checked in by svonolfe, 13 years ago

Merged relevant changes from the trunk into the branch (cloning,...) (#1177)

File size: 2.8 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 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.Core;
23using HeuristicLab.Encodings.PermutationEncoding;
24using HeuristicLab.Parameters;
25using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
26using HeuristicLab.Data;
27using HeuristicLab.Common;
28
29namespace HeuristicLab.Problems.VehicleRouting.Encodings.Alba {
30  [Item("AlbaCustomerInsertionManipulator", "An operator which manipulates a VRP representation by inserting a customer in another place.  It is implemented as described in Alba, E. and Dorronsoro, B. (2004). Solving the Vehicle Routing Problem by Using Cellular Genetic Algorithms.")]
31  [StorableClass]
32  public sealed class AlbaCustomerInsertionManipulator : AlbaManipulator {
33    [StorableConstructor]
34    private AlbaCustomerInsertionManipulator(bool deserializing) : base(deserializing) { }
35
36    public AlbaCustomerInsertionManipulator()
37      : base() {
38    }
39
40    public override IDeepCloneable Clone(Cloner cloner) {
41      return new AlbaCustomerInsertionManipulator(this, cloner);
42    }
43
44    private AlbaCustomerInsertionManipulator(AlbaCustomerInsertionManipulator original, Cloner cloner)
45      : base(original, cloner) {
46    }
47
48    protected override void Manipulate(IRandom random, AlbaEncoding individual) {
49      AlbaEncoding original = (AlbaEncoding)individual.Clone();
50      int cutIndex, insertIndex, number;
51
52      int customer = random.Next(ProblemInstance.Cities.Value);
53      cutIndex = FindCustomerLocation(customer, individual);
54
55      insertIndex = random.Next(original.Length);
56      number = original[cutIndex];
57
58      int i = 0;  // index in new permutation
59      int j = 0;  // index in old permutation
60      while (i < original.Length) {
61        if (j == cutIndex) {
62          j++;
63        }
64        if (i == insertIndex) {
65          individual[i] = number;
66          i++;
67        }
68        if ((i < original.Length) && (j < original.Length)) {
69          individual[i] = original[j];
70          i++;
71          j++;
72        }
73      }
74    }
75  }
76}
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