1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 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 | using HeuristicLab.Problems.VehicleRouting.Variants;
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31 |
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32 | namespace HeuristicLab.Problems.VehicleRouting.Encodings.Potvin {
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33 | [Item("PotvinPDExchangeTabuCriterion", @"Checks if a certain exchange move is tabu.")]
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34 | [StorableType("65696327-6751-4029-9B07-849AEB0B79EE")]
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35 | public class PotvinPDExchangeTabuCriterion : SingleSuccessorOperator, IPotvinPDExchangeMoveOperator, ITabuChecker, IPotvinOperator, IVRPMoveOperator {
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36 | public override bool CanChangeName {
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37 | get { return false; }
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38 | }
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39 |
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40 | public ILookupParameter<PotvinPDExchangeMove> PDExchangeMoveParameter {
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41 | get { return (ILookupParameter<PotvinPDExchangeMove>)Parameters["PotvinPDExchangeMove"]; }
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42 | }
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43 | public ILookupParameter VRPMoveParameter {
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44 | get { return PDExchangeMoveParameter; }
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45 | }
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46 | public ILookupParameter<IVRPEncoding> VRPToursParameter {
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47 | get { return (ILookupParameter<IVRPEncoding>)Parameters["VRPTours"]; }
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48 | }
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49 | public ILookupParameter<IVRPProblemInstance> ProblemInstanceParameter {
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50 | get { return (LookupParameter<IVRPProblemInstance>)Parameters["ProblemInstance"]; }
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51 | }
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52 |
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53 | public ILookupParameter<ItemList<IItem>> TabuListParameter {
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54 | get { return (ILookupParameter<ItemList<IItem>>)Parameters["TabuList"]; }
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55 | }
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56 | public ILookupParameter<BoolValue> MoveTabuParameter {
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57 | get { return (ILookupParameter<BoolValue>)Parameters["MoveTabu"]; }
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58 | }
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59 | public IValueLookupParameter<BoolValue> MaximizationParameter {
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60 | get { return (IValueLookupParameter<BoolValue>)Parameters["Maximization"]; }
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61 | }
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62 | public ILookupParameter<DoubleValue> MoveQualityParameter {
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63 | get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
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64 | }
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65 | public ValueParameter<BoolValue> UseAspirationCriterionParameter {
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66 | get { return (ValueParameter<BoolValue>)Parameters["UseAspirationCriterion"]; }
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67 | }
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68 |
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69 | public ILookupParameter<DoubleValue> MoveDistanceParameter {
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70 | get { return (ILookupParameter<DoubleValue>)Parameters["MoveDistance"]; }
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71 | }
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72 | public ILookupParameter<DoubleValue> MoveOverloadParameter {
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73 | get { return (ILookupParameter<DoubleValue>)Parameters["MoveOverload"]; }
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74 | }
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75 | public ILookupParameter<DoubleValue> MoveTardinessParameter {
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76 | get { return (ILookupParameter<DoubleValue>)Parameters["MoveTardiness"]; }
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77 | }
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78 |
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79 | public BoolValue UseAspirationCriterion {
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80 | get { return UseAspirationCriterionParameter.Value; }
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81 | set { UseAspirationCriterionParameter.Value = value; }
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82 | }
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83 |
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84 | [StorableConstructor]
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85 | protected PotvinPDExchangeTabuCriterion(StorableConstructorFlag _) : base(_) { }
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86 | protected PotvinPDExchangeTabuCriterion(PotvinPDExchangeTabuCriterion original, Cloner cloner) : base(original, cloner) { }
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87 | public PotvinPDExchangeTabuCriterion()
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88 | : base() {
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89 | Parameters.Add(new LookupParameter<PotvinPDExchangeMove>("PotvinPDExchangeMove", "The moves that should be made."));
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90 | Parameters.Add(new LookupParameter<IVRPEncoding>("VRPTours", "The VRP tours considered in the move."));
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91 | Parameters.Add(new LookupParameter<IVRPProblemInstance>("ProblemInstance", "The VRP problem instance"));
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92 |
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93 | Parameters.Add(new LookupParameter<BoolValue>("MoveTabu", "The variable to store if a move was tabu."));
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94 | Parameters.Add(new LookupParameter<ItemList<IItem>>("TabuList", "The tabu list."));
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95 | Parameters.Add(new ValueParameter<BoolValue>("UseAspirationCriterion", "Whether to use the aspiration criterion or not.", new BoolValue(true)));
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96 | 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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97 | Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The quality of the current move."));
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98 |
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99 | Parameters.Add(new LookupParameter<DoubleValue>("MoveDistance", "The distance of the move"));
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100 | Parameters.Add(new LookupParameter<DoubleValue>("MoveOverload", "The overload of the move"));
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101 | Parameters.Add(new LookupParameter<DoubleValue>("MoveTardiness", "The tardiness of the move"));
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102 | }
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103 |
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104 | public override IDeepCloneable Clone(Cloner cloner) {
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105 | return new PotvinPDExchangeTabuCriterion(this, cloner);
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106 | }
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107 |
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108 | public override IOperation Apply() {
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109 | ItemList<IItem> tabuList = TabuListParameter.ActualValue;
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110 | double moveQuality = MoveQualityParameter.ActualValue.Value;
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111 | bool useAspiration = UseAspirationCriterion.Value;
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112 | bool isTabu = false;
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113 | PotvinPDExchangeMove move = PDExchangeMoveParameter.ActualValue;
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114 |
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115 | foreach (IItem tabuMove in tabuList) {
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116 | PotvinPDRelocateMoveAttribute attribute = tabuMove as PotvinPDRelocateMoveAttribute;
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117 |
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118 | if (attribute != null) {
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119 | double distance = 0;
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120 | if (MoveDistanceParameter.ActualValue != null)
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121 | distance = MoveDistanceParameter.ActualValue.Value;
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122 |
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123 | double overload = 0;
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124 | if (MoveOverloadParameter.ActualValue != null)
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125 | overload = MoveOverloadParameter.ActualValue.Value;
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126 |
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127 | double tardiness = 0;
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128 | if (MoveTardinessParameter.ActualValue != null)
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129 | tardiness = MoveTardinessParameter.ActualValue.Value;
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130 |
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131 | IVRPProblemInstance instance = ProblemInstanceParameter.ActualValue;
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132 | double quality = attribute.Distance * instance.DistanceFactor.Value;
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133 |
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134 | IHomogenousCapacitatedProblemInstance cvrp = instance as IHomogenousCapacitatedProblemInstance;
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135 | if (cvrp != null)
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136 | quality += attribute.Overload * cvrp.OverloadPenalty.Value;
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137 |
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138 | ITimeWindowedProblemInstance vrptw = instance as ITimeWindowedProblemInstance;
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139 | if (vrptw != null)
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140 | quality += attribute.Tardiness * vrptw.TardinessPenalty.Value;
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141 |
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142 | IPickupAndDeliveryProblemInstance pdp = instance as IPickupAndDeliveryProblemInstance;
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143 | if (pdp != null)
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144 | quality += attribute.PickupViolations * pdp.PickupViolationPenalty.Value;
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145 |
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146 | if (!useAspiration || moveQuality >= quality) {
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147 | if ((attribute.City == move.City && attribute.Tour == move.Tour) ||
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148 | (attribute.City == move.Replaced && attribute.Tour == move.OldTour)) {
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149 | isTabu = true;
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150 | break;
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151 | }
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152 |
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153 | if (attribute.Distance == distance && attribute.Overload == overload && attribute.Tardiness == tardiness) {
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154 | isTabu = true;
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155 | break;
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156 | }
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157 | }
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158 | }
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159 | }
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160 |
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161 | MoveTabuParameter.ActualValue = new BoolValue(isTabu);
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162 | return base.Apply();
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163 | }
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164 | }
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165 | }
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