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 System.IO;
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23 | using System.Linq;
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24 | using HeuristicLab.Algorithms.GeneticAlgorithm;
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25 | using HeuristicLab.Persistence.Default.Xml;
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26 | using HeuristicLab.Problems.Instances;
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27 | using HeuristicLab.Problems.Instances.VehicleRouting;
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28 | using HeuristicLab.Problems.VehicleRouting;
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29 | using HeuristicLab.Problems.VehicleRouting.Encodings.General;
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30 | using HeuristicLab.Problems.VehicleRouting.Encodings.Potvin;
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31 | using HeuristicLab.Problems.VehicleRouting.ProblemInstances;
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32 | using HeuristicLab.Selection;
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33 | using Microsoft.VisualStudio.TestTools.UnitTesting;
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34 |
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35 | namespace HeuristicLab.Tests {
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36 | [TestClass]
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37 | public class GAVrpSampleTest {
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38 | private const string SampleFileName = "GA_VRP";
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39 |
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40 | [TestMethod]
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41 | [TestCategory("Samples.Create")]
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42 | [TestProperty("Time", "medium")]
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43 | public void CreateGaVrpSampleTest() {
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44 | var ga = CreateGaVrpSample();
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45 | string path = Path.Combine(SamplesUtils.SamplesDirectory, SampleFileName + SamplesUtils.SampleFileExtension);
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46 | XmlGenerator.Serialize(ga, path);
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47 | }
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48 |
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49 | [TestMethod]
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50 | [TestCategory("Samples.Execute")]
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51 | [TestProperty("Time", "long")]
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52 | public void RunGaVrpSampleTest() {
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53 | var ga = CreateGaVrpSample();
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54 | ga.SetSeedRandomly.Value = false;
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55 | SamplesUtils.RunAlgorithm(ga);
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56 | Assert.AreEqual(1828.9368669428338, SamplesUtils.GetDoubleResult(ga, "BestQuality"));
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57 | Assert.AreEqual(1830.1444308908331, SamplesUtils.GetDoubleResult(ga, "CurrentAverageQuality"));
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58 | Assert.AreEqual(1871.7128510304112, SamplesUtils.GetDoubleResult(ga, "CurrentWorstQuality"));
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59 | Assert.AreEqual(99100, SamplesUtils.GetIntResult(ga, "EvaluatedSolutions"));
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60 | }
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61 |
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62 | private GeneticAlgorithm CreateGaVrpSample() {
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63 | GeneticAlgorithm ga = new GeneticAlgorithm();
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64 |
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65 | #region Problem Configuration
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66 | VehicleRoutingProblem vrpProblem = new VehicleRoutingProblem();
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67 |
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68 | SolomonFormatInstanceProvider instanceProvider = new SolomonInstanceProvider();
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69 | CVRPTWData data = instanceProvider.Import(@"Test Resources\C101.txt", @"Test Resources\C101.opt.txt") as CVRPTWData;
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70 | vrpProblem.Load(data);
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71 | vrpProblem.Name = "C101 VRP (imported from Solomon)";
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72 | vrpProblem.Description = "Represents a Vehicle Routing Problem.";
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73 | CVRPTWProblemInstance instance = vrpProblem.ProblemInstance as CVRPTWProblemInstance;
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74 | instance.DistanceFactor.Value = 1;
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75 | instance.FleetUsageFactor.Value = 100;
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76 | instance.OverloadPenalty.Value = 100;
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77 | instance.TardinessPenalty.Value = 100;
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78 | instance.TimeFactor.Value = 0;
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79 | vrpProblem.MaximizationParameter.Value.Value = false;
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80 | instance.UseDistanceMatrix.Value = true;
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81 | instance.Vehicles.Value = 25;
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82 | #endregion
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83 | #region Algorithm Configuration
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84 | ga.Name = "Genetic Algorithm - VRP";
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85 | ga.Description = "A genetic algorithm which solves the \"C101\" vehicle routing problem (imported from Solomon)";
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86 | ga.Problem = vrpProblem;
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87 | SamplesUtils.ConfigureGeneticAlgorithmParameters<TournamentSelector, MultiVRPSolutionCrossover, MultiVRPSolutionManipulator>(
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88 | ga, 100, 1, 1000, 0.05, 3);
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89 |
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90 | var xOver = (MultiVRPSolutionCrossover)ga.Crossover;
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91 | foreach (var op in xOver.Operators) {
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92 | xOver.Operators.SetItemCheckedState(op, false);
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93 | }
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94 | xOver.Operators.SetItemCheckedState(xOver.Operators
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95 | .OfType<PotvinRouteBasedCrossover>()
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96 | .Single(), true);
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97 | xOver.Operators.SetItemCheckedState(xOver.Operators
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98 | .OfType<PotvinSequenceBasedCrossover>()
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99 | .Single(), true);
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100 |
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101 | var manipulator = (MultiVRPSolutionManipulator)ga.Mutator;
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102 | foreach (var op in manipulator.Operators) {
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103 | manipulator.Operators.SetItemCheckedState(op, false);
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104 | }
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105 | manipulator.Operators.SetItemCheckedState(manipulator.Operators
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106 | .OfType<PotvinOneLevelExchangeMainpulator>()
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107 | .Single(), true);
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108 | manipulator.Operators.SetItemCheckedState(manipulator.Operators
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109 | .OfType<PotvinTwoLevelExchangeManipulator>()
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110 | .Single(), true);
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111 | #endregion
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112 |
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113 | return ga;
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114 | }
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115 | }
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116 | }
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