1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2019 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.Operators;
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26 | using HeuristicLab.Optimization;
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27 | using HeuristicLab.Parameters;
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28 | using HEAL.Attic;
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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.Potvin {
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32 | [Item("PotvinVehicleAssignmentMoveTabuMaker", "Declares a given vehicle assignment move as tabu.")]
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33 | [StorableType("7E620554-BA0A-49E1-ACD4-4BF4966F6EE5")]
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34 | public class PotvinVehicleAssignmentMoveTabuMaker : SingleSuccessorOperator, ITabuMaker, IPotvinVehicleAssignmentMoveOperator, IPotvinOperator, ISingleObjectiveOperator {
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35 | public LookupParameter<ItemList<IItem>> TabuListParameter {
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36 | get { return (LookupParameter<ItemList<IItem>>)Parameters["TabuList"]; }
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37 | }
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38 | public ValueLookupParameter<IntValue> TabuTenureParameter {
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39 | get { return (ValueLookupParameter<IntValue>)Parameters["TabuTenure"]; }
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40 | }
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41 | public ILookupParameter<DoubleValue> MoveQualityParameter {
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42 | get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
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43 | }
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44 | public ILookupParameter<DoubleValue> QualityParameter {
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45 | get { return (ILookupParameter<DoubleValue>)Parameters["Quality"]; }
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46 | }
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47 | public IValueLookupParameter<BoolValue> MaximizationParameter {
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48 | get { return (IValueLookupParameter<BoolValue>)Parameters["Maximization"]; }
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49 | }
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50 |
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51 |
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52 | public ILookupParameter<PotvinVehicleAssignmentMove> VehicleAssignmentMoveParameter {
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53 | get { return (ILookupParameter<PotvinVehicleAssignmentMove>)Parameters["PotvinVehicleAssignmentMove"]; }
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54 | }
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55 | public ILookupParameter VRPMoveParameter {
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56 | get { return VehicleAssignmentMoveParameter; }
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57 | }
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58 | public ILookupParameter<IVRPEncoding> VRPToursParameter {
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59 | get { return (ILookupParameter<IVRPEncoding>)Parameters["VRPTours"]; }
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60 | }
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61 | public ILookupParameter<IVRPProblemInstance> ProblemInstanceParameter {
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62 | get { return (LookupParameter<IVRPProblemInstance>)Parameters["ProblemInstance"]; }
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63 | }
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64 |
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65 | public ILookupParameter<DoubleValue> DistanceParameter {
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66 | get { return (ILookupParameter<DoubleValue>)Parameters["Distance"]; }
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67 | }
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68 | public ILookupParameter<DoubleValue> OverloadParameter {
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69 | get { return (ILookupParameter<DoubleValue>)Parameters["Overload"]; }
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70 | }
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71 | public ILookupParameter<DoubleValue> TardinessParameter {
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72 | get { return (ILookupParameter<DoubleValue>)Parameters["Tardiness"]; }
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73 | }
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74 |
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75 | [StorableConstructor]
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76 | protected PotvinVehicleAssignmentMoveTabuMaker(StorableConstructorFlag _) : base(_) { }
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77 | protected PotvinVehicleAssignmentMoveTabuMaker(PotvinVehicleAssignmentMoveTabuMaker original, Cloner cloner) : base(original, cloner) { }
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78 | public PotvinVehicleAssignmentMoveTabuMaker()
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79 | : base() {
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80 | Parameters.Add(new LookupParameter<ItemList<IItem>>("TabuList", "The tabu list where move attributes are stored."));
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81 | Parameters.Add(new ValueLookupParameter<IntValue>("TabuTenure", "The tenure of the tabu list."));
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82 | Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The quality of the move."));
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83 | Parameters.Add(new LookupParameter<DoubleValue>("Quality", "The quality of the solution."));
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84 | Parameters.Add(new ValueLookupParameter<BoolValue>("Maximization", "True if the problem is a maximization problem, else if it is a minimization problem."));
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85 |
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86 | Parameters.Add(new LookupParameter<PotvinVehicleAssignmentMove>("PotvinVehicleAssignmentMove", "The moves that should be made."));
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87 | Parameters.Add(new LookupParameter<IVRPEncoding>("VRPTours", "The VRP tours considered in the move."));
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88 | Parameters.Add(new LookupParameter<IVRPProblemInstance>("ProblemInstance", "The VRP problem instance"));
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89 |
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90 | Parameters.Add(new LookupParameter<DoubleValue>("Distance", "The distance of the individual"));
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91 | Parameters.Add(new LookupParameter<DoubleValue>("Overload", "The overload of the individual"));
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92 | Parameters.Add(new LookupParameter<DoubleValue>("Tardiness", "The tardiness of the individual"));
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93 | }
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94 |
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95 | public override IDeepCloneable Clone(Cloner cloner) {
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96 | return new PotvinVehicleAssignmentMoveTabuMaker(this, cloner);
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97 | }
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98 |
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99 | public override IOperation Apply() {
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100 | ItemList<IItem> tabuList = TabuListParameter.ActualValue;
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101 | int tabuTenure = TabuTenureParameter.ActualValue.Value;
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102 |
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103 | int overlength = tabuList.Count - tabuTenure;
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104 | if (overlength >= 0) {
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105 | for (int i = 0; i < tabuTenure - 1; i++)
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106 | tabuList[i] = tabuList[i + overlength + 1];
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107 | while (tabuList.Count >= tabuTenure)
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108 | tabuList.RemoveAt(tabuList.Count - 1);
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109 | }
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110 |
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111 | PotvinVehicleAssignmentMove move = VehicleAssignmentMoveParameter.ActualValue;
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112 | double moveQuality = MoveQualityParameter.ActualValue.Value;
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113 | double quality = QualityParameter.ActualValue.Value;
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114 | double baseQuality = moveQuality;
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115 | if (quality < moveQuality) baseQuality = quality; // we make an uphill move, the lower bound is the solution quality
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116 |
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117 | double distance = 0;
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118 | if (DistanceParameter.ActualValue != null)
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119 | distance = DistanceParameter.ActualValue.Value;
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120 |
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121 | double overload = 0;
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122 | if (OverloadParameter.ActualValue != null)
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123 | overload = OverloadParameter.ActualValue.Value;
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124 |
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125 | double tardiness = 0;
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126 | if (TardinessParameter.ActualValue != null)
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127 | tardiness = TardinessParameter.ActualValue.Value;
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128 |
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129 | tabuList.Add(new PotvinVehicleAssignmentMoveAttribute(baseQuality, move.Tour1, move.Individual.GetVehicleAssignment(move.Tour1),
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130 | distance, overload, tardiness));
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131 | tabuList.Add(new PotvinVehicleAssignmentMoveAttribute(baseQuality, move.Tour2, move.Individual.GetVehicleAssignment(move.Tour2),
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132 | distance, overload, tardiness));
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133 |
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134 | return base.Apply();
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135 | }
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136 | }
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137 | }
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