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source: branches/Scheduling/HeuristicLab.Problems.Scheduling/3.3/Encodings/JobSequenceMatrix/Manipulators/JSMShiftChangeManipulator.cs @ 6177

Last change on this file since 6177 was 6177, checked in by jhelm, 13 years ago

#1329: Implemented PriorityRulesVector based encoding and added new operators to the JSMEncoding. Added Gantt-Charts for visualization of schedules and problems.

File size: 3.0 KB
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1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2011 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 System;
23using System.Collections.Generic;
24using System.Linq;
25using System.Text;
26using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
27using HeuristicLab.Core;
28using HeuristicLab.Common;
29using HeuristicLab.Encodings.PermutationEncoding;
30
31namespace HeuristicLab.Problems.Scheduling.Encodings.JobSequenceMatrix.Manipulators {
32
33  [Item("JSM Shift Change Manipulator", "Represents a manipulation operation inserting parts of the individual at another position.")]
34  [StorableClass]
35  public class JSMShiftChangeManipulator : JSMManipulator {
36    [StorableConstructor]
37    protected JSMShiftChangeManipulator(bool deserializing) : base(deserializing) { }
38    protected JSMShiftChangeManipulator(JSMShiftChangeManipulator original, Cloner cloner)
39      : base(original, cloner) {
40    }
41    public override IDeepCloneable Clone(Cloner cloner) {
42      return new JSMShiftChangeManipulator(this, cloner);
43    }
44
45    public JSMShiftChangeManipulator() : base() { }
46
47    protected override JSMEncoding Manipulate(IRandom random, JSMEncoding individual) {
48      JSMEncoding result = (JSMEncoding)individual.Clone();
49
50      int nrOfJobs = individual.JobSequenceMatrix[0].Length;
51
52      int jobIndex = random.Next(nrOfJobs);
53
54      int signedFactor = random.Next (2);
55
56      for (int permutationIndex = 0; permutationIndex < result.JobSequenceMatrix.Count; permutationIndex++ ) {
57        int i = 0;
58        Permutation currentPermutation = result.JobSequenceMatrix[permutationIndex];
59        while (i < currentPermutation.Length && currentPermutation[i] != jobIndex)
60          i++;
61
62        int shift = (signedFactor == 0) ? random.Next(nrOfJobs / 2) * -1 : random.Next(nrOfJobs / 2);
63        int newIndex = shift + i;
64        if (newIndex < 0) newIndex = 0;
65        if (newIndex >= nrOfJobs) newIndex = nrOfJobs - 1;
66
67        List<int> aux = currentPermutation.ToList<int>();
68        int swap = currentPermutation[i];
69        aux.RemoveAt(i);
70        aux.Insert(newIndex, swap);
71
72        result.JobSequenceMatrix[permutationIndex] = new Permutation(PermutationTypes.Absolute, aux.ToArray());
73      }
74
75      return result;
76    }
77  }
78}
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