1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2010 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 System;
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23 | using System.Collections.Generic;
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24 | using System.Linq;
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25 | using System.Text;
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26 | using HeuristicLab.Problems.VehicleRouting.Interfaces;
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27 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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28 | using HeuristicLab.Core;
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29 | using HeuristicLab.Parameters;
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30 | using HeuristicLab.Data;
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31 | using HeuristicLab.Optimization;
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32 | using HeuristicLab.PluginInfrastructure;
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33 | using HeuristicLab.Problems.VehicleRouting.Variants;
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34 | using HeuristicLab.Problems.VehicleRouting.Encodings;
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35 |
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36 | namespace HeuristicLab.Problems.VehicleRouting.ProblemInstances {
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37 | [Item("CVRPTWEvaluator", "Represents a single depot CVRPTW evaluator.")]
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38 | [StorableClass]
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39 | public class CVRPTWEvaluator: CVRPEvaluator {
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40 | public ILookupParameter<DoubleValue> TardinessParameter {
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41 | get { return (ILookupParameter<DoubleValue>)Parameters["Tardiness"]; }
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42 | }
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43 |
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44 | public ILookupParameter<DoubleValue> TravelTimeParameter {
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45 | get { return (ILookupParameter<DoubleValue>)Parameters["TravelTime"]; }
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46 | }
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47 |
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48 | protected override VRPEvaluation CreateTourEvaluation() {
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49 | return new CVRPTWEvaluation();
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50 | }
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51 |
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52 | protected override void EvaluateTour(VRPEvaluation eval, IVRPProblemInstance instance, Tour tour) {
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53 | IHomogenousCapacitatedProblemInstance cvrpInstance = instance as IHomogenousCapacitatedProblemInstance;
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54 | DoubleArray demand = instance.Demand;
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55 |
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56 | ITimeWindowedProblemInstance vrptw = instance as ITimeWindowedProblemInstance;
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57 | DoubleArray dueTime = vrptw.DueTime;
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58 | DoubleArray readyTime = vrptw.ReadyTime;
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59 | DoubleArray serviceTimes = vrptw.ServiceTime;
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60 |
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61 | double time = 0.0;
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62 | double waitingTime = 0.0;
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63 | double serviceTime = 0.0;
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64 | double tardiness = 0.0;
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65 | double delivered = 0.0;
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66 | double overweight = 0.0;
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67 | double distance = 0.0;
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68 |
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69 | //simulate a tour, start and end at depot
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70 | for (int i = 0; i <= tour.Stops.Count; i++) {
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71 | int start = 0;
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72 | if (i > 0)
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73 | start = tour.Stops[i - 1];
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74 | int end = 0;
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75 | if (i < tour.Stops.Count)
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76 | end = tour.Stops[i];
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77 |
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78 | //drive there
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79 | double currentDistace = vrptw.GetDistance(start, end);
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80 | time += currentDistace;
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81 | distance += currentDistace;
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82 |
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83 | //check if it was serviced on time
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84 | if (time > dueTime[end])
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85 | tardiness += time - dueTime[end];
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86 |
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87 | //wait
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88 | double currentWaitingTime = 0.0;
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89 | if (time < readyTime[end])
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90 | currentWaitingTime = readyTime[end] - time;
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91 | waitingTime += currentWaitingTime;
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92 | time += currentWaitingTime;
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93 |
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94 | //service
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95 | double currentServiceTime = serviceTimes[end];
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96 | serviceTime += currentServiceTime;
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97 | time += currentServiceTime;
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98 | delivered += demand[end];
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99 | }
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100 |
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101 | eval.Quality += instance.FleetUsageFactor.Value;
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102 | eval.Quality += instance.DistanceFactor.Value * distance;
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103 | eval.Distance = distance;
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104 | eval.VehicleUtilization = 1;
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105 |
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106 | double capacity = cvrpInstance.Capacity.Value;
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107 | if (delivered > capacity) {
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108 | overweight = delivered - capacity;
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109 | }
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110 |
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111 | (eval as CVRPEvaluation).Overload = overweight;
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112 | double penalty = overweight * cvrpInstance.OverloadPenalty.Value;
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113 | eval.Penalty += penalty;
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114 | eval.Quality += penalty;
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115 |
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116 | (eval as CVRPTWEvaluation).Tardiness = tardiness;
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117 | (eval as CVRPTWEvaluation).TravelTime = time;
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118 |
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119 | penalty = tardiness * vrptw.TardinessPenalty.Value;
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120 | eval.Penalty += penalty;
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121 | eval.Quality += penalty;
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122 | eval.Quality += time * vrptw.TimeFactor.Value;
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123 | }
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124 |
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125 | protected override void InitResultParameters() {
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126 | base.InitResultParameters();
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127 |
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128 | TardinessParameter.ActualValue = new DoubleValue(0);
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129 | TravelTimeParameter.ActualValue = new DoubleValue(0);
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130 | }
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131 |
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132 | protected override void UpdateResultParameters(VRPEvaluation tourEvaluation) {
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133 | base.UpdateResultParameters(tourEvaluation);
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134 |
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135 | TardinessParameter.ActualValue.Value += (tourEvaluation as CVRPTWEvaluation).Tardiness;
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136 | TravelTimeParameter.ActualValue.Value += (tourEvaluation as CVRPTWEvaluation).TravelTime;
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137 | }
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138 |
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139 | [StorableConstructor]
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140 | protected CVRPTWEvaluator(bool deserializing) : base(deserializing) { }
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141 |
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142 | public CVRPTWEvaluator() {
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143 | Parameters.Add(new LookupParameter<DoubleValue>("Tardiness", "The tardiness."));
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144 | Parameters.Add(new LookupParameter<DoubleValue>("TravelTime", "The travel time."));
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145 | }
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146 | }
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147 | } |
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