1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using HeuristicLab.Common;
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23 | using HeuristicLab.Core;
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24 | using HeuristicLab.Data;
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25 | using HeuristicLab.Encodings.PermutationEncoding;
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26 | using HeuristicLab.Optimization;
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27 | using HeuristicLab.Parameters;
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28 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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29 | using HeuristicLab.Problems.VehicleRouting.Interfaces;
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30 |
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31 | namespace HeuristicLab.Problems.VehicleRouting.Encodings.Alba {
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32 | [Item("AlbaTranslocationMoveGenerator", "An operator which generates translocation moves for a VRP representation. It is implemented as described in Alba, E. and Dorronsoro, B. (2004). Solving the Vehicle Routing Problem by Using Cellular Genetic Algorithms.")]
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33 | [StorableClass]
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34 | public sealed class AlbaTranslocationMoveGenerator : AlbaMoveGenerator, IAlbaTranslocationMoveOperator, IMultiMoveGenerator {
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35 | public IValueLookupParameter<TranslocationMoveGenerator> TranslocationMoveGeneratorParameter {
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36 | get { return (IValueLookupParameter<TranslocationMoveGenerator>)Parameters["TranslocationMoveGenerator"]; }
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37 | }
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38 |
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39 | private IPermutationMoveOperator PermutationMoveOperatorParameter {
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40 | get { return TranslocationMoveGeneratorParameter.Value; }
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41 | set {
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42 | TranslocationMoveGeneratorParameter.Value = value as TranslocationMoveGenerator;
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43 | if (TranslocationMoveGeneratorParameter.Value is IMultiMoveGenerator) {
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44 | ((IMultiMoveGenerator)TranslocationMoveGeneratorParameter.Value).SampleSizeParameter.ActualName = SampleSizeParameter.Name;
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45 | }
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46 | }
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47 | }
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48 |
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49 | public ILookupParameter<TranslocationMove> TranslocationMoveParameter {
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50 | get {
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51 | if (TranslocationMoveGeneratorParameter.Value != null)
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52 | return TranslocationMoveGeneratorParameter.Value.TranslocationMoveParameter;
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53 | else
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54 | return null;
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55 | }
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56 | }
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57 |
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58 | public override ILookupParameter VRPMoveParameter {
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59 | get { return TranslocationMoveParameter; }
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60 | }
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61 |
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62 | public ILookupParameter<Permutation> PermutationParameter {
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63 | get {
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64 | if (TranslocationMoveGeneratorParameter.Value != null)
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65 | return TranslocationMoveGeneratorParameter.Value.PermutationParameter;
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66 | else
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67 | return null;
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68 | }
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69 | }
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70 |
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71 | public IValueLookupParameter<IntValue> SampleSizeParameter {
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72 | get { return (IValueLookupParameter<IntValue>)Parameters["SampleSize"]; }
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73 | }
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74 |
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75 | [StorableConstructor]
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76 | private AlbaTranslocationMoveGenerator(bool deserializing) : base(deserializing) { }
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77 |
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78 | public AlbaTranslocationMoveGenerator()
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79 | : base() {
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80 | Parameters.Add(new ValueLookupParameter<TranslocationMoveGenerator>("TranslocationMoveGenerator", "The move generator.",
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81 | new StochasticTranslocationMultiMoveGenerator()));
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82 | Parameters.Add(new ValueLookupParameter<IntValue>("SampleSize", "The number of moves to generate."));
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83 |
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84 | ((IMultiMoveGenerator)TranslocationMoveGeneratorParameter.Value).SampleSizeParameter.ActualName = SampleSizeParameter.Name;
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85 | }
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86 |
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87 | public override IDeepCloneable Clone(Cloner cloner) {
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88 | return new AlbaTranslocationMoveGenerator(this, cloner);
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89 | }
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90 |
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91 | private AlbaTranslocationMoveGenerator(AlbaTranslocationMoveGenerator original, Cloner cloner)
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92 | : base(original, cloner) {
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93 | }
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94 |
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95 | public override IOperation Apply() {
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96 | IOperation next = base.Apply();
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97 |
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98 | IVRPEncoding solution = VRPToursParameter.ActualValue;
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99 |
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100 | PermutationMoveOperatorParameter.PermutationParameter.ActualName = VRPToursParameter.ActualName;
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101 | IAtomicOperation op = this.ExecutionContext.CreateChildOperation(PermutationMoveOperatorParameter);
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102 | op.Operator.Execute((IExecutionContext)op, CancellationToken);
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103 |
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104 | return next;
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105 | }
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106 | }
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107 | }
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