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("CVRPEvaluator", "Represents a single depot CVRP evaluator.")]
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38 | [StorableClass]
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39 | public class CVRPEvaluator: SingleDepotVRPEvaluator {
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40 | public ILookupParameter<DoubleValue> OverloadParameter {
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41 | get { return (ILookupParameter<DoubleValue>)Parameters["Overload"]; }
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42 | }
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43 |
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44 | protected override VRPEvaluation CreateTourEvaluation() {
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45 | return new CVRPEvaluation();
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46 | }
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47 |
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48 | protected override void EvaluateTour(VRPEvaluation eval, IVRPProblemInstance instance, Tour tour) {
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49 | base.EvaluateTour(eval, instance, tour);
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50 |
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51 | ICapacitatedProblemInstance cvrpInstance = instance as ICapacitatedProblemInstance;
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52 |
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53 | double delivered = 0.0;
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54 | double overweight = 0.0;
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55 |
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56 | for (int i = 0; i < tour.Stops.Count; i++) {
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57 | delivered += instance.Demand[i];
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58 | }
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59 |
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60 | double capacity = (instance as ICapacitatedProblemInstance).Capacity.Value;
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61 | if (delivered > capacity) {
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62 | overweight = delivered - capacity;
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63 | }
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64 |
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65 | (eval as CVRPEvaluation).Overload = overweight;
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66 | double penalty = overweight * cvrpInstance.OverloadPenalty.Value;
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67 | eval.Penalty += penalty;
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68 | eval.Quality += penalty;
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69 | }
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70 |
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71 | protected override void InitResultParameters() {
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72 | base.InitResultParameters();
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73 |
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74 | OverloadParameter.ActualValue = new DoubleValue(0);
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75 | }
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76 |
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77 | protected override void UpdateResultParameters(VRPEvaluation tourEvaluation) {
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78 | base.UpdateResultParameters(tourEvaluation);
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79 |
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80 | OverloadParameter.ActualValue.Value += (tourEvaluation as CVRPEvaluation).Overload;
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81 | }
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82 |
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83 | [StorableConstructor]
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84 | protected CVRPEvaluator(bool deserializing) : base(deserializing) { }
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85 |
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86 | public CVRPEvaluator() {
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87 | Parameters.Add(new LookupParameter<DoubleValue>("Overload", "The overload."));
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88 | }
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89 | }
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90 | } |
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