[11186] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[12721] | 3 | * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[11186] | 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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[11245] | 23 | using System.IO;
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[11190] | 24 | using System.Linq;
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[11186] | 25 | using HeuristicLab.Common;
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| 26 | using HeuristicLab.Core;
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[11187] | 27 | using HeuristicLab.Data;
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[11186] | 28 | using HeuristicLab.Encodings.IntegerVectorEncoding;
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| 29 | using HeuristicLab.Optimization;
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[11187] | 30 | using HeuristicLab.Parameters;
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[11186] | 31 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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[11189] | 32 | using HeuristicLab.Problems.Instances;
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[11261] | 33 | using HeuristicLab.Problems.Instances.Types;
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[11186] | 34 |
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| 35 | namespace HeuristicLab.Problems.Orienteering {
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[13295] | 36 | [Item("Orienteering Problem (OP)", "Represents a single-objective Orienteering Problem.")]
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[12721] | 37 | [Creatable(CreatableAttribute.Categories.CombinatorialProblems, Priority = 115)]
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[11186] | 38 | [StorableClass]
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[11307] | 39 | public sealed class OrienteeringProblem
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[11321] | 40 | : SingleObjectiveHeuristicOptimizationProblem<IOrienteeringEvaluator, IOrienteeringSolutionCreator>,
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[11277] | 41 | IStorableContent, IProblemInstanceConsumer<OPData>, IProblemInstanceConsumer<TSPData>, IProblemInstanceConsumer<CVRPData> {
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[11186] | 42 |
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| 43 | public string Filename { get; set; }
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| 44 |
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[11187] | 45 | #region Parameter Properties
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[11316] | 46 | public OptionalValueParameter<DoubleMatrix> CoordinatesParameter {
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| 47 | get { return (OptionalValueParameter<DoubleMatrix>)Parameters["Coordinates"]; }
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[11187] | 48 | }
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[11325] | 49 | public IValueParameter<DistanceMatrix> DistanceMatrixParameter {
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| 50 | get { return (IValueParameter<DistanceMatrix>)Parameters["DistanceMatrix"]; }
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[11187] | 51 | }
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| 52 |
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[11325] | 53 | public IFixedValueParameter<IntValue> StartingPointParameter {
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| 54 | get { return (IFixedValueParameter<IntValue>)Parameters["StartingPoint"]; }
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[11187] | 55 | }
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[11325] | 56 | public IFixedValueParameter<IntValue> TerminalPointParameter {
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| 57 | get { return (IFixedValueParameter<IntValue>)Parameters["TerminalPoint"]; }
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[11187] | 58 | }
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[11325] | 59 | public IFixedValueParameter<DoubleValue> MaximumDistanceParameter {
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| 60 | get { return (IFixedValueParameter<DoubleValue>)Parameters["MaximumDistance"]; }
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[11187] | 61 | }
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[11325] | 62 | public IValueParameter<DoubleArray> ScoresParameter {
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| 63 | get { return (IValueParameter<DoubleArray>)Parameters["Scores"]; }
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[11187] | 64 | }
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[11325] | 65 | public IFixedValueParameter<DoubleValue> PointVisitingCostsParameter {
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| 66 | get { return (IFixedValueParameter<DoubleValue>)Parameters["PointVisitingCosts"]; }
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[11187] | 67 | }
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| 68 |
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| 69 | public OptionalValueParameter<IntegerVector> BestKnownSolutionParameter {
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| 70 | get { return (OptionalValueParameter<IntegerVector>)Parameters["BestKnownSolution"]; }
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| 71 | }
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| 72 | #endregion
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| 73 |
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| 74 | #region Properties
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| 75 | public DoubleMatrix Coordinates {
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| 76 | get { return CoordinatesParameter.Value; }
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| 77 | set { CoordinatesParameter.Value = value; }
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| 78 | }
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| 79 | public DistanceMatrix DistanceMatrix {
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| 80 | get { return DistanceMatrixParameter.Value; }
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| 81 | set { DistanceMatrixParameter.Value = value; }
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| 82 | }
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[11325] | 83 | public int StartingPoint {
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| 84 | get { return StartingPointParameter.Value.Value; }
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| 85 | set { StartingPointParameter.Value.Value = value; }
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[11189] | 86 | }
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[11325] | 87 | public int TerminalPoint {
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| 88 | get { return TerminalPointParameter.Value.Value; }
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| 89 | set { TerminalPointParameter.Value.Value = value; }
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[11189] | 90 | }
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[11325] | 91 | public double MaximumDistance {
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| 92 | get { return MaximumDistanceParameter.Value.Value; }
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| 93 | set { MaximumDistanceParameter.Value.Value = value; }
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[11187] | 94 | }
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| 95 | public DoubleArray Scores {
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| 96 | get { return ScoresParameter.Value; }
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| 97 | set { ScoresParameter.Value = value; }
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| 98 | }
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[11325] | 99 | public double PointVisitingCosts {
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| 100 | get { return PointVisitingCostsParameter.Value.Value; }
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| 101 | set { PointVisitingCostsParameter.Value.Value = value; }
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[11189] | 102 | }
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[11187] | 103 | public IntegerVector BestKnownSolution {
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| 104 | get { return BestKnownSolutionParameter.Value; }
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| 105 | set { BestKnownSolutionParameter.Value = value; }
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| 106 | }
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[12721] | 107 | private BestOrienteeringSolutionAnalyzer BestOrienteeringSolutionAnalyser {
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| 108 | get { return Operators.OfType<BestOrienteeringSolutionAnalyzer>().SingleOrDefault(); }
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[11190] | 109 | }
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[11187] | 110 | #endregion
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| 111 |
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[11186] | 112 | [StorableConstructor]
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| 113 | private OrienteeringProblem(bool deserializing)
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| 114 | : base(deserializing) {
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| 115 | }
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| 116 | private OrienteeringProblem(OrienteeringProblem original, Cloner cloner)
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| 117 | : base(original, cloner) {
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| 118 | RegisterEventHandlers();
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| 119 | }
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| 120 | public override IDeepCloneable Clone(Cloner cloner) {
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| 121 | return new OrienteeringProblem(this, cloner);
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| 122 | }
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| 123 | public OrienteeringProblem()
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[11191] | 124 | : base(new OrienteeringEvaluator(), new GreedyOrienteeringTourCreator()) {
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[11316] | 125 | Parameters.Add(new OptionalValueParameter<DoubleMatrix>("Coordinates", "The x- and y-Coordinates of the points."));
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[11191] | 126 | Parameters.Add(new ValueParameter<DistanceMatrix>("DistanceMatrix", "The matrix which contains the distances between the points."));
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[11325] | 127 | Parameters.Add(new FixedValueParameter<IntValue>("StartingPoint", "Index of the starting point.", new IntValue(0)));
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| 128 | Parameters.Add(new FixedValueParameter<IntValue>("TerminalPoint", "Index of the ending point.", new IntValue(0)));
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| 129 | Parameters.Add(new FixedValueParameter<DoubleValue>("MaximumDistance", "The maximum distance constraint for a Orienteering solution."));
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[11245] | 130 | Parameters.Add(new ValueParameter<DoubleArray>("Scores", "The scores of the points."));
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[11325] | 131 | Parameters.Add(new FixedValueParameter<DoubleValue>("PointVisitingCosts", "The costs for visiting a point."));
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[11187] | 132 | Parameters.Add(new OptionalValueParameter<IntegerVector>("BestKnownSolution", "The best known solution of this Orienteering instance."));
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[11186] | 133 |
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| 134 | Maximization.Value = true;
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| 135 | MaximizationParameter.Hidden = true;
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| 136 |
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| 137 | SolutionCreator.IntegerVectorParameter.ActualName = "OrienteeringSolution";
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| 138 |
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[11190] | 139 | InitializeInitialOrienteeringInstance();
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[11186] | 140 |
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| 141 | ParameterizeSolutionCreator();
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| 142 | ParameterizeEvaluator();
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| 143 |
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| 144 | InitializeOperators();
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| 145 | RegisterEventHandlers();
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| 146 | }
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| 147 |
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[11187] | 148 | #region Events
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[11186] | 149 | protected override void OnSolutionCreatorChanged() {
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| 150 | base.OnSolutionCreatorChanged();
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[11190] | 151 | SolutionCreator.IntegerVectorParameter.ActualNameChanged += SolutionCreator_IntegerVectorParameter_ActualNameChanged;
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[11186] | 152 | ParameterizeSolutionCreator();
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| 153 | ParameterizeEvaluator();
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| 154 | ParameterizeAnalyzer();
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| 155 | ParameterizeOperators();
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| 156 | }
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| 157 | protected override void OnEvaluatorChanged() {
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| 158 | base.OnEvaluatorChanged();
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| 159 | ParameterizeEvaluator();
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| 160 | ParameterizeAnalyzer();
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| 161 | }
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| 162 | private void SolutionCreator_IntegerVectorParameter_ActualNameChanged(object sender, EventArgs e) {
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| 163 | ParameterizeEvaluator();
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| 164 | ParameterizeAnalyzer();
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| 165 | ParameterizeOperators();
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| 166 | }
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[11190] | 167 | private void CoordinatesParameter_ValueChanged(object sender, EventArgs e) {
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| 168 | if (Coordinates != null) {
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| 169 | Coordinates.ItemChanged += new EventHandler<EventArgs<int, int>>(CoordinatesValue_ItemChanged);
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| 170 | Coordinates.Reset += new EventHandler(CoordinatesValue_Reset);
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| 171 | }
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| 172 | ParameterizeSolutionCreator();
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[11269] | 173 | UpdateDistanceMatrix();
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[11325] | 174 | CheckStartingIndex();
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| 175 | CheckTerminalIndex();
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[11190] | 176 | }
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| 177 | private void CoordinatesValue_ItemChanged(object sender, EventArgs<int, int> e) {
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[11269] | 178 | UpdateDistanceMatrix();
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[11325] | 179 | CheckStartingIndex();
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| 180 | CheckTerminalIndex();
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[11190] | 181 | }
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| 182 | private void CoordinatesValue_Reset(object sender, EventArgs e) {
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| 183 | ParameterizeSolutionCreator();
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[11269] | 184 | UpdateDistanceMatrix();
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[11325] | 185 | CheckStartingIndex();
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| 186 | CheckTerminalIndex();
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[11190] | 187 | }
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[11325] | 188 | private void StartingPointParameterValue_ValueChanged(object sender, EventArgs e) {
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| 189 | CheckStartingIndex();
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[11190] | 190 | }
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| 191 |
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[11325] | 192 | private void TerminalPointParameterValue_ValueChanged(object sender, EventArgs e) {
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| 193 | CheckTerminalIndex();
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[11190] | 194 | }
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[11325] | 195 | private void MaximumDistanceParameterValue_ValueChanged(object sender, EventArgs e) { }
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[11190] | 196 | private void ScoresParameter_ValueChanged(object sender, EventArgs e) {
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| 197 | ParameterizeEvaluator();
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| 198 | ParameterizeAnalyzer();
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| 199 | ParameterizeSolutionCreator();
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| 200 |
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| 201 | ScoresParameter.Value.Reset += new EventHandler(ScoresValue_Reset);
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| 202 | }
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| 203 | private void ScoresValue_Reset(object sender, EventArgs e) {
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| 204 | ParameterizeSolutionCreator();
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| 205 | }
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[11325] | 206 | private void PointVisitingCostsParameterValue_ValueChanged(object sender, EventArgs e) { }
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[11328] | 207 |
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| 208 | private void BestKnownSolutionParameter_ValueChanged(object sender, EventArgs e) {
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| 209 | if (BestKnownSolution == null)
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| 210 | BestKnownQuality = null;
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| 211 | }
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[11186] | 212 | #endregion
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| 213 |
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| 214 | #region Helpers
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| 215 | [StorableHook(HookType.AfterDeserialization)]
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| 216 | private void AfterDeserialization() {
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| 217 | RegisterEventHandlers();
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| 218 | }
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| 219 |
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| 220 | private void RegisterEventHandlers() {
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[11190] | 221 | SolutionCreator.IntegerVectorParameter.ActualNameChanged += SolutionCreator_IntegerVectorParameter_ActualNameChanged;
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| 222 |
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| 223 | CoordinatesParameter.ValueChanged += CoordinatesParameter_ValueChanged;
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| 224 | if (CoordinatesParameter.Value != null) {
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| 225 | CoordinatesParameter.Value.ItemChanged += CoordinatesValue_ItemChanged;
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| 226 | CoordinatesParameter.Value.Reset += CoordinatesValue_Reset;
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| 227 | }
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| 228 |
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[11325] | 229 | StartingPointParameter.Value.ValueChanged += StartingPointParameterValue_ValueChanged;
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| 230 | TerminalPointParameter.Value.ValueChanged += TerminalPointParameterValue_ValueChanged;
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| 231 | MaximumDistanceParameter.Value.ValueChanged += MaximumDistanceParameterValue_ValueChanged;
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| 232 | PointVisitingCostsParameter.Value.ValueChanged += PointVisitingCostsParameterValue_ValueChanged;
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[11190] | 233 |
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| 234 | ScoresParameter.ValueChanged += ScoresParameter_ValueChanged;
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| 235 | ScoresParameter.Value.Reset += ScoresValue_Reset;
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[11328] | 236 |
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| 237 | BestKnownSolutionParameter.ValueChanged += BestKnownSolutionParameter_ValueChanged;
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[11186] | 238 | }
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[11190] | 239 |
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[11186] | 240 | private void ParameterizeSolutionCreator() {
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[11321] | 241 | SolutionCreator.DistanceMatrixParameter.ActualName = DistanceMatrixParameter.Name;
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| 242 | SolutionCreator.ScoresParameter.ActualName = ScoresParameter.Name;
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| 243 | SolutionCreator.MaximumDistanceParameter.ActualName = MaximumDistanceParameter.Name;
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| 244 | SolutionCreator.StartingPointParameter.ActualName = StartingPointParameter.Name;
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| 245 | SolutionCreator.TerminalPointParameter.ActualName = TerminalPointParameter.Name;
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| 246 | SolutionCreator.PointVisitingCostsParameter.ActualName = PointVisitingCostsParameter.Name;
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[11186] | 247 | }
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| 248 | private void ParameterizeEvaluator() {
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[11321] | 249 | Evaluator.IntegerVectorParameter.ActualName = SolutionCreator.IntegerVectorParameter.ActualName;
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| 250 | Evaluator.ScoresParameter.ActualName = ScoresParameter.Name;
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| 251 | Evaluator.DistanceMatrixParameter.ActualName = DistanceMatrixParameter.Name;
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| 252 | Evaluator.MaximumDistanceParameter.ActualName = MaximumDistanceParameter.Name;
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| 253 | Evaluator.PointVisitingCostsParameter.ActualName = PointVisitingCostsParameter.Name;
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[11186] | 254 | }
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| 255 | private void ParameterizeAnalyzer() {
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[11191] | 256 | if (BestOrienteeringSolutionAnalyser != null) {
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| 257 | BestOrienteeringSolutionAnalyser.QualityParameter.ActualName = Evaluator.QualityParameter.ActualName;
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| 258 |
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| 259 | BestOrienteeringSolutionAnalyser.IntegerVector.ActualName = SolutionCreator.IntegerVectorParameter.ActualName;
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| 260 | BestOrienteeringSolutionAnalyser.CoordinatesParameter.ActualName = CoordinatesParameter.Name;
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| 261 | BestOrienteeringSolutionAnalyser.ScoresParameter.ActualName = ScoresParameter.Name;
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| 262 |
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| 263 | BestOrienteeringSolutionAnalyser.ResultsParameter.ActualName = "Results";
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| 264 | BestOrienteeringSolutionAnalyser.BestKnownQualityParameter.ActualName = BestKnownQualityParameter.Name;
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| 265 | BestOrienteeringSolutionAnalyser.BestKnownSolutionParameter.ActualName = BestKnownSolutionParameter.Name;
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| 266 | }
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[11186] | 267 | }
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| 268 | private void InitializeOperators() {
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[12721] | 269 | Operators.Add(new BestOrienteeringSolutionAnalyzer());
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[11191] | 270 | ParameterizeAnalyzer();
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| 271 |
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[11303] | 272 | Operators.Add(new OrienteeringLocalImprovementOperator());
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[11195] | 273 | Operators.Add(new OrienteeringShakingOperator());
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[11191] | 274 | ParameterizeOperators();
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[11186] | 275 | }
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| 276 | private void ParameterizeOperators() {
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[11194] | 277 | foreach (var op in Operators.OfType<OrienteeringLocalImprovementOperator>()) {
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[11191] | 278 | op.IntegerVectorParameter.ActualName = SolutionCreator.IntegerVectorParameter.ActualName;
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[11194] | 279 | op.DistanceMatrixParameter.ActualName = DistanceMatrixParameter.Name;
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| 280 | op.ScoresParameter.ActualName = ScoresParameter.Name;
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| 281 | op.MaximumDistanceParameter.ActualName = MaximumDistanceParameter.Name;
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| 282 | op.StartingPointParameter.ActualName = StartingPointParameter.Name;
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[11319] | 283 | op.TerminalPointParameter.ActualName = TerminalPointParameter.Name;
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[11320] | 284 | op.PointVisitingCostsParameter.ActualName = PointVisitingCostsParameter.Name;
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[11194] | 285 | }
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[11195] | 286 | foreach (var op in Operators.OfType<OrienteeringShakingOperator>()) {
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[11226] | 287 | op.IntegerVectorParameter.ActualName = SolutionCreator.IntegerVectorParameter.ActualName;
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| 288 | op.DistanceMatrixParameter.ActualName = DistanceMatrixParameter.Name;
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| 289 | op.ScoresParameter.ActualName = ScoresParameter.Name;
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| 290 | op.MaximumDistanceParameter.ActualName = MaximumDistanceParameter.Name;
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| 291 | op.StartingPointParameter.ActualName = StartingPointParameter.Name;
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[11319] | 292 | op.TerminalPointParameter.ActualName = TerminalPointParameter.Name;
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[11320] | 293 | op.PointVisitingCostsParameter.ActualName = PointVisitingCostsParameter.Name;
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[11195] | 294 | }
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[11186] | 295 | }
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| 296 | #endregion
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| 297 |
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[11269] | 298 | private DistanceMatrix CalculateDistanceMatrix(double[,] coordinates) {
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| 299 | var distances = DistanceHelper.GetDistanceMatrix(DistanceMeasure.Euclidean, coordinates, null, coordinates.GetLength(0));
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| 300 |
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| 301 | return new DistanceMatrix(distances);
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| 302 | }
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| 303 | private void UpdateDistanceMatrix() {
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[11316] | 304 | if (Coordinates == null) {
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| 305 | DistanceMatrix = new DistanceMatrix(0, 0);
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| 306 | return;
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| 307 | }
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| 308 |
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[11269] | 309 | var coordinates = Coordinates;
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| 310 | int dimension = coordinates.Rows;
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[11270] | 311 | var distances = new double[dimension, dimension];
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[11269] | 312 | for (int i = 0; i < dimension - 1; i++) {
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| 313 | for (int j = i + 1; j < dimension; j++) {
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| 314 | double x1 = coordinates[i, 0];
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| 315 | double y1 = coordinates[i, 1];
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| 316 | double x2 = coordinates[j, 0];
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| 317 | double y2 = coordinates[j, 1];
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| 318 | distances[i, j] = Math.Sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2));
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| 319 | distances[j, i] = distances[i, j];
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[11191] | 320 | }
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| 321 | }
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[11270] | 322 | DistanceMatrix = new DistanceMatrix(distances);
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[11191] | 323 | }
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[11325] | 324 | private void CheckStartingIndex() {
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| 325 | if (StartingPoint < 0) StartingPoint = 0;
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| 326 | if (StartingPoint >= DistanceMatrix.Rows) StartingPoint = DistanceMatrix.Rows - 1;
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| 327 | }
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| 328 | private void CheckTerminalIndex() {
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| 329 | if (TerminalPoint < 0) TerminalPoint = 0;
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| 330 | if (TerminalPoint >= DistanceMatrix.Rows) TerminalPoint = DistanceMatrix.Rows - 1;
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| 331 | }
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[11191] | 332 |
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[11190] | 333 | private void InitializeInitialOrienteeringInstance() {
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[11269] | 334 | var coordinates = new double[21, 2] {
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[11190] | 335 | { 4.60, 7.10 }, { 5.70, 11.40 }, { 4.40, 12.30 }, { 2.80, 14.30 }, { 3.20, 10.30 },
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| 336 | { 3.50, 9.80 }, { 4.40, 8.40 }, { 7.80, 11.00 }, { 8.80, 9.80 }, { 7.70, 8.20 },
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| 337 | { 6.30, 7.90 }, { 5.40, 8.20 }, { 5.80, 6.80 }, { 6.70, 5.80 }, { 13.80, 13.10 },
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| 338 | { 14.10, 14.20 }, { 11.20, 13.60 }, { 9.70, 16.40 }, { 9.50, 18.80 }, { 4.70, 16.80 },
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| 339 | { 5.00, 5.60 }
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[11269] | 340 | };
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| 341 | Coordinates = new DoubleMatrix(coordinates);
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| 342 | DistanceMatrix = CalculateDistanceMatrix(coordinates);
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[11190] | 343 |
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[11325] | 344 | StartingPoint = 0;
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| 345 | TerminalPoint = 20;
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| 346 | MaximumDistance = 30;
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[11190] | 347 |
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| 348 | Scores = new DoubleArray(new double[21] { 0, 20, 20, 30, 15, 15, 10, 20, 20, 20, 15, 10, 10, 25, 40, 40, 30, 30, 50, 30, 0 });
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[11186] | 349 | }
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[11189] | 350 |
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[11325] | 351 | #region Instance consuming
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[11277] | 352 | public void Load(OPData data) {
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| 353 | if (data.Coordinates == null && data.Distances == null)
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| 354 | throw new InvalidDataException("The given instance specifies no coordinates or distance matrix!");
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| 355 | if (data.Coordinates != null && data.Coordinates.GetLength(1) != 2)
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[11245] | 356 | throw new InvalidDataException("The coordinates of the given instance are not in the right format, there need to be one row for each customer and two columns for the x and y coordinates.");
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| 357 |
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| 358 | // Clear old solutions
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| 359 | BestKnownSolution = null;
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| 360 |
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[11189] | 361 | Name = data.Name;
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| 362 | Description = data.Description;
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| 363 |
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[11277] | 364 | Coordinates = data.Coordinates != null ? new DoubleMatrix(data.Coordinates) : null;
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| 365 | if (data.Distances != null)
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| 366 | DistanceMatrix = new DistanceMatrix(data.Distances);
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| 367 | else
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| 368 | DistanceMatrix = new DistanceMatrix(data.GetDistanceMatrix());
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[11245] | 369 |
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[11325] | 370 | StartingPoint = data.StartingPoint;
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| 371 | TerminalPoint = data.TerminalPoint;
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[11189] | 372 |
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[11325] | 373 | PointVisitingCosts = data.PointVisitingCosts;
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| 374 | MaximumDistance = data.MaximumDistance;
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[11277] | 375 | Scores = new DoubleArray(data.Scores);
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[11189] | 376 | }
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[11261] | 377 |
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[11277] | 378 | public void Load(TSPData data) {
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| 379 | if (data.Coordinates == null && data.Distances == null)
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| 380 | throw new InvalidDataException("The given instance specifies no coordinates or distance matrix!");
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| 381 | if (data.Coordinates != null && data.Coordinates.GetLength(1) != 2)
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[11261] | 382 | throw new InvalidDataException("The coordinates of the given instance are not in the right format, there need to be one row for each customer and two columns for the x and y coordinates.");
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| 383 |
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| 384 | // Clear old solutions
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| 385 | BestKnownSolution = null;
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| 386 |
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| 387 | Name = data.Name;
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| 388 | Description = data.Description;
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| 389 |
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[11277] | 390 | Coordinates = data.Coordinates != null ? new DoubleMatrix(data.Coordinates) : null;
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[11261] | 391 | if (data.Distances != null)
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| 392 | DistanceMatrix = new DistanceMatrix(data.Distances);
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| 393 | else
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[11277] | 394 | DistanceMatrix = new DistanceMatrix(data.GetDistanceMatrix());
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[11261] | 395 |
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[11325] | 396 | StartingPoint = 0; // First city is interpreted as start point
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| 397 | TerminalPoint = data.Dimension - 1; // Last city is interpreted als end point
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[11261] | 398 |
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[11325] | 399 | PointVisitingCosts = 0;
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| 400 | MaximumDistance = DistanceMatrix.Average() * 5.0; // distance from start to end first to last city is interpreted as maximum distance
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[11277] | 401 | Scores = new DoubleArray(Enumerable.Repeat(1.0, data.Dimension).ToArray()); // all scores are 1
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[11261] | 402 | }
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[11277] | 403 |
|
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| 404 | public void Load(CVRPData data) {
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| 405 | if (data.Coordinates == null && data.Distances == null)
|
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| 406 | throw new InvalidDataException("The given instance specifies no coordinates or distance matrix!");
|
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| 407 | if (data.Coordinates != null && data.Coordinates.GetLength(1) != 2)
|
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| 408 | throw new InvalidDataException("The coordinates of the given instance are not in the right format, there need to be one row for each customer and two columns for the x and y coordinates.");
|
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| 409 |
|
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| 410 | // Clear old solutions
|
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| 411 | BestKnownSolution = null;
|
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| 412 |
|
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| 413 | Name = data.Name;
|
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| 414 | Description = data.Description;
|
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| 415 |
|
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| 416 | Coordinates = data.Coordinates != null ? new DoubleMatrix(data.Coordinates) : null;
|
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| 417 | DistanceMatrix = data.Distances != null
|
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| 418 | ? new DistanceMatrix(data.Distances)
|
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| 419 | : CalculateDistanceMatrix(data.Coordinates);
|
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| 420 |
|
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[11325] | 421 | StartingPoint = 0; // Depot is interpreted as start point
|
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| 422 | TerminalPoint = 0; // Depot is interpreted als end point
|
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[11277] | 423 |
|
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[11325] | 424 | PointVisitingCosts = 0;
|
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| 425 | MaximumDistance = data.Capacity * 2; // capacity is interpreted as max distance
|
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[11277] | 426 | Scores = new DoubleArray(data.Demands); // demands are interpreted as scores
|
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| 427 | }
|
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[11325] | 428 | #endregion
|
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[11186] | 429 | }
|
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| 430 | } |
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