[4363] | 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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[4374] | 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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[4363] | 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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[4377] | 53 | IHomogenousCapacitatedProblemInstance cvrpInstance = instance as IHomogenousCapacitatedProblemInstance;
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| 54 | DoubleArray demand = instance.Demand;
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[4363] | 55 |
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| 56 | ITimeWindowedProblemInstance vrptw = instance as ITimeWindowedProblemInstance;
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[4377] | 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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[4363] | 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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[4377] | 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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[4363] | 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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[4377] | 81 | distance += currentDistace;
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[4363] | 82 |
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| 83 | //check if it was serviced on time
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[4377] | 84 | if (time > dueTime[end])
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| 85 | tardiness += time - dueTime[end];
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[4363] | 86 |
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| 87 | //wait
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| 88 | double currentWaitingTime = 0.0;
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[4377] | 89 | if (time < readyTime[end])
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| 90 | currentWaitingTime = readyTime[end] - time;
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[4363] | 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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[4377] | 95 | double currentServiceTime = serviceTimes[end];
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[4363] | 96 | serviceTime += currentServiceTime;
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| 97 | time += currentServiceTime;
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[4377] | 98 | delivered += demand[end];
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[4363] | 99 | }
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| 100 |
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[4377] | 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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[4363] | 116 | (eval as CVRPTWEvaluation).Tardiness = tardiness;
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[4374] | 117 | (eval as CVRPTWEvaluation).TravelTime = time;
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| 118 |
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[4377] | 119 | penalty = tardiness * vrptw.TardinessPenalty.Value;
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[4363] | 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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[4374] | 129 | TravelTimeParameter.ActualValue = new DoubleValue(0);
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[4363] | 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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[4374] | 136 | TravelTimeParameter.ActualValue.Value += (tourEvaluation as CVRPTWEvaluation).TravelTime;
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[4363] | 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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[4374] | 144 | Parameters.Add(new LookupParameter<DoubleValue>("TravelTime", "The travel time."));
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[4363] | 145 | }
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| 146 | }
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| 147 | } |
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