[11186] | 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2014 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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[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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| 36 |
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| 37 | [Item("Orienteering Problem", "Represents a single objective Orienteering Problem.")]
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| 38 | [Creatable("Problems")]
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| 39 | [StorableClass]
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| 40 | public class OrienteeringProblem
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| 41 | : SingleObjectiveHeuristicOptimizationProblem<IOrienteeringEvaluator, IIntegerVectorCreator>,
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[11261] | 42 | IStorableContent, IProblemInstanceConsumer<CVRPData>, IProblemInstanceConsumer<OPData> {
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[11186] | 43 |
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| 44 | public string Filename { get; set; }
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| 45 |
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[11187] | 46 | #region Parameter Properties
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[11245] | 47 | public ValueParameter<DoubleMatrix> CoordinatesParameter {
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| 48 | get { return (ValueParameter<DoubleMatrix>)Parameters["Coordinates"]; }
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[11187] | 49 | }
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[11191] | 50 | public ValueParameter<DistanceMatrix> DistanceMatrixParameter {
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| 51 | get { return (ValueParameter<DistanceMatrix>)Parameters["DistanceMatrix"]; }
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[11187] | 52 | }
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| 53 |
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| 54 | public ValueParameter<IntValue> StartingPointParameter {
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| 55 | get { return (ValueParameter<IntValue>)Parameters["StartingPoint"]; }
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| 56 | }
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| 57 | public ValueParameter<IntValue> TerminusPointParameter {
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| 58 | get { return (ValueParameter<IntValue>)Parameters["TerminusPoint"]; }
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| 59 | }
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| 60 | public ValueParameter<DoubleValue> MaximumDistanceParameter {
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| 61 | get { return (ValueParameter<DoubleValue>)Parameters["MaximumDistance"]; }
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| 62 | }
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| 63 | public ValueParameter<DoubleArray> ScoresParameter {
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| 64 | get { return (ValueParameter<DoubleArray>)Parameters["Scores"]; }
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| 65 | }
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| 66 | public ValueParameter<DoubleValue> FixedPenaltyParameter {
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| 67 | get { return (ValueParameter<DoubleValue>)Parameters["FixedPenalty"]; }
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| 68 | }
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| 69 |
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| 70 | public OptionalValueParameter<IntegerVector> BestKnownSolutionParameter {
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| 71 | get { return (OptionalValueParameter<IntegerVector>)Parameters["BestKnownSolution"]; }
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| 72 | }
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| 73 | #endregion
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| 74 |
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| 75 | #region Properties
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| 76 | public DoubleMatrix Coordinates {
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| 77 | get { return CoordinatesParameter.Value; }
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| 78 | set { CoordinatesParameter.Value = value; }
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| 79 | }
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| 80 | public DistanceMatrix DistanceMatrix {
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| 81 | get { return DistanceMatrixParameter.Value; }
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| 82 | set { DistanceMatrixParameter.Value = value; }
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| 83 | }
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[11189] | 84 | public IntValue StartingPoint {
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| 85 | get { return StartingPointParameter.Value; }
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| 86 | set { StartingPointParameter.Value = value; }
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| 87 | }
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| 88 | public IntValue TerminusPoint {
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| 89 | get { return TerminusPointParameter.Value; }
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| 90 | set { TerminusPointParameter.Value = value; }
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| 91 | }
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[11187] | 92 | public DoubleValue MaximumDistance {
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| 93 | get { return MaximumDistanceParameter.Value; }
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| 94 | set { MaximumDistanceParameter.Value = value; }
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| 95 | }
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| 96 | public DoubleArray Scores {
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| 97 | get { return ScoresParameter.Value; }
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| 98 | set { ScoresParameter.Value = value; }
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| 99 | }
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[11189] | 100 | public DoubleValue FixedPenalty {
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| 101 | get { return FixedPenaltyParameter.Value; }
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| 102 | set { FixedPenaltyParameter.Value = value; }
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| 103 | }
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[11187] | 104 | public IntegerVector BestKnownSolution {
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| 105 | get { return BestKnownSolutionParameter.Value; }
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| 106 | set { BestKnownSolutionParameter.Value = value; }
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| 107 | }
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[11190] | 108 | private BestOrienteeringSolutionAnalyser BestOrienteeringSolutionAnalyser {
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| 109 | get { return Operators.OfType<BestOrienteeringSolutionAnalyser>().SingleOrDefault(); }
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| 110 | }
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[11187] | 111 | #endregion
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| 112 |
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[11186] | 113 | [StorableConstructor]
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| 114 | private OrienteeringProblem(bool deserializing)
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| 115 | : base(deserializing) {
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| 116 | }
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| 117 | private OrienteeringProblem(OrienteeringProblem original, Cloner cloner)
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| 118 | : base(original, cloner) {
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| 119 | RegisterEventHandlers();
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| 120 | }
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| 121 | public override IDeepCloneable Clone(Cloner cloner) {
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| 122 | return new OrienteeringProblem(this, cloner);
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| 123 | }
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| 124 | public OrienteeringProblem()
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[11191] | 125 | : base(new OrienteeringEvaluator(), new GreedyOrienteeringTourCreator()) {
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[11245] | 126 | Parameters.Add(new ValueParameter<DoubleMatrix>("Coordinates", "The x- and y-Coordinates of the points."));
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[11191] | 127 | Parameters.Add(new ValueParameter<DistanceMatrix>("DistanceMatrix", "The matrix which contains the distances between the points."));
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[11187] | 128 | Parameters.Add(new ValueParameter<IntValue>("StartingPoint", "Index of the starting point.", new IntValue(0)));
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| 129 | Parameters.Add(new ValueParameter<IntValue>("TerminusPoint", "Index of the ending point.", new IntValue(0)));
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| 130 | Parameters.Add(new ValueParameter<DoubleValue>("MaximumDistance", "The maximum distance constraint for a Orienteering solution."));
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[11245] | 131 | Parameters.Add(new ValueParameter<DoubleArray>("Scores", "The scores of the points."));
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[11187] | 132 | Parameters.Add(new ValueParameter<DoubleValue>("FixedPenalty", "The penalty for each visited vertex."));
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| 133 | Parameters.Add(new OptionalValueParameter<IntegerVector>("BestKnownSolution", "The best known solution of this Orienteering instance."));
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[11186] | 134 |
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| 135 | Maximization.Value = true;
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| 136 | MaximizationParameter.Hidden = true;
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| 137 |
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| 138 | SolutionCreator.IntegerVectorParameter.ActualName = "OrienteeringSolution";
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| 139 |
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[11190] | 140 | InitializeInitialOrienteeringInstance();
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[11186] | 141 |
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| 142 | ParameterizeSolutionCreator();
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| 143 | ParameterizeEvaluator();
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| 144 |
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| 145 | InitializeOperators();
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| 146 | RegisterEventHandlers();
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| 147 | }
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| 148 |
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[11187] | 149 | #region Events
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[11186] | 150 | protected override void OnSolutionCreatorChanged() {
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| 151 | base.OnSolutionCreatorChanged();
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[11190] | 152 | SolutionCreator.IntegerVectorParameter.ActualNameChanged += SolutionCreator_IntegerVectorParameter_ActualNameChanged;
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[11186] | 153 | ParameterizeSolutionCreator();
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| 154 | ParameterizeEvaluator();
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| 155 | ParameterizeAnalyzer();
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| 156 | ParameterizeOperators();
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| 157 | }
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| 158 | protected override void OnEvaluatorChanged() {
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| 159 | base.OnEvaluatorChanged();
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| 160 | ParameterizeEvaluator();
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| 161 | ParameterizeAnalyzer();
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| 162 | }
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| 163 | private void SolutionCreator_IntegerVectorParameter_ActualNameChanged(object sender, EventArgs e) {
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| 164 | ParameterizeEvaluator();
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| 165 | ParameterizeAnalyzer();
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| 166 | ParameterizeOperators();
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| 167 | }
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[11190] | 168 | private void CoordinatesParameter_ValueChanged(object sender, EventArgs e) {
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| 169 | if (Coordinates != null) {
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| 170 | Coordinates.ItemChanged += new EventHandler<EventArgs<int, int>>(CoordinatesValue_ItemChanged);
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| 171 | Coordinates.Reset += new EventHandler(CoordinatesValue_Reset);
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| 172 | }
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| 173 | ParameterizeSolutionCreator();
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[11269] | 174 | UpdateDistanceMatrix();
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[11190] | 175 | }
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| 176 | private void CoordinatesValue_ItemChanged(object sender, EventArgs<int, int> e) {
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[11269] | 177 | UpdateDistanceMatrix();
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[11190] | 178 | }
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| 179 | private void CoordinatesValue_Reset(object sender, EventArgs e) {
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| 180 | ParameterizeSolutionCreator();
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[11269] | 181 | UpdateDistanceMatrix();
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[11190] | 182 | }
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| 183 | private void StartingPointParameter_ValueChanged(object sender, EventArgs e) {
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| 184 | ParameterizeEvaluator();
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| 185 | ParameterizeAnalyzer();
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| 186 | }
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| 187 |
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| 188 | private void TerminusPointParameter_ValueChanged(object sender, EventArgs e) {
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| 189 | ParameterizeEvaluator();
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| 190 | ParameterizeAnalyzer();
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| 191 | }
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| 192 | private void MaximumDistanceParameter_ValueChanged(object sender, EventArgs e) {
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| 193 | ParameterizeEvaluator();
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| 194 | ParameterizeAnalyzer();
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| 195 | }
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| 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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| 206 | private void FixedPenaltyParameter_ValueChanged(object sender, EventArgs e) {
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| 207 | ParameterizeEvaluator();
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| 208 | ParameterizeAnalyzer();
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| 209 | }
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[11186] | 210 | #endregion
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| 211 |
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| 212 | #region Helpers
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| 213 | [StorableHook(HookType.AfterDeserialization)]
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| 214 | private void AfterDeserialization() {
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| 215 | RegisterEventHandlers();
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| 216 | }
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| 217 |
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| 218 | private void RegisterEventHandlers() {
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[11190] | 219 | SolutionCreator.IntegerVectorParameter.ActualNameChanged += SolutionCreator_IntegerVectorParameter_ActualNameChanged;
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| 220 |
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| 221 | CoordinatesParameter.ValueChanged += CoordinatesParameter_ValueChanged;
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| 222 | if (CoordinatesParameter.Value != null) {
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| 223 | CoordinatesParameter.Value.ItemChanged += CoordinatesValue_ItemChanged;
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| 224 | CoordinatesParameter.Value.Reset += CoordinatesValue_Reset;
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| 225 | }
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| 226 |
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| 227 | StartingPointParameter.ValueChanged += StartingPointParameter_ValueChanged;
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| 228 | TerminusPointParameter.ValueChanged += TerminusPointParameter_ValueChanged;
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| 229 | MaximumDistanceParameter.ValueChanged += MaximumDistanceParameter_ValueChanged;
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| 230 |
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| 231 | ScoresParameter.ValueChanged += ScoresParameter_ValueChanged;
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| 232 | ScoresParameter.Value.Reset += ScoresValue_Reset;
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| 233 | FixedPenaltyParameter.ValueChanged += FixedPenaltyParameter_ValueChanged;
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[11186] | 234 | }
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[11190] | 235 |
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[11186] | 236 | private void ParameterizeSolutionCreator() {
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[11191] | 237 | if (SolutionCreator is GreedyOrienteeringTourCreator) {
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| 238 | var creator = (GreedyOrienteeringTourCreator)SolutionCreator;
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| 239 | creator.DistanceMatrixParameter.ActualName = DistanceMatrixParameter.Name;
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| 240 | creator.ScoresParameter.ActualName = ScoresParameter.Name;
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| 241 | creator.MaximumDistanceParameter.ActualName = MaximumDistanceParameter.Name;
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| 242 | creator.StartingPointParameter.ActualName = StartingPointParameter.Name;
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| 243 | creator.TerminusPointParameter.ActualName = TerminusPointParameter.Name;
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| 244 | creator.FixedPenaltyParameter.ActualName = FixedPenaltyParameter.Name;
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[11187] | 245 | }
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[11186] | 246 | }
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| 247 | private void ParameterizeEvaluator() {
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| 248 | if (Evaluator is OrienteeringEvaluator) {
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[11194] | 249 | var evaluator = (OrienteeringEvaluator)Evaluator;
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| 250 | evaluator.IntegerVectorParameter.ActualName = SolutionCreator.IntegerVectorParameter.ActualName;
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| 251 | evaluator.ScoresParameter.ActualName = ScoresParameter.Name;
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[11186] | 252 | }
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| 253 | }
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| 254 | private void ParameterizeAnalyzer() {
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[11191] | 255 | if (BestOrienteeringSolutionAnalyser != null) {
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| 256 | BestOrienteeringSolutionAnalyser.QualityParameter.ActualName = Evaluator.QualityParameter.ActualName;
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| 257 |
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| 258 | BestOrienteeringSolutionAnalyser.IntegerVector.ActualName = SolutionCreator.IntegerVectorParameter.ActualName;
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| 259 | BestOrienteeringSolutionAnalyser.CoordinatesParameter.ActualName = CoordinatesParameter.Name;
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| 260 | BestOrienteeringSolutionAnalyser.ScoresParameter.ActualName = ScoresParameter.Name;
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| 261 |
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| 262 | BestOrienteeringSolutionAnalyser.ResultsParameter.ActualName = "Results";
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| 263 | BestOrienteeringSolutionAnalyser.BestKnownQualityParameter.ActualName = BestKnownQualityParameter.Name;
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| 264 | BestOrienteeringSolutionAnalyser.BestKnownSolutionParameter.ActualName = BestKnownSolutionParameter.Name;
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| 265 | }
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[11186] | 266 | }
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| 267 | private void InitializeOperators() {
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[11191] | 268 | Operators.Add(new BestOrienteeringSolutionAnalyser());
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| 269 | ParameterizeAnalyzer();
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| 270 |
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[11194] | 271 | Operators.Add(new OrienteeringLocalImprovementOperator());
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[11195] | 272 | Operators.Add(new OrienteeringShakingOperator());
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[11191] | 273 | ParameterizeOperators();
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[11186] | 274 | }
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| 275 | private void ParameterizeOperators() {
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[11194] | 276 | foreach (var op in Operators.OfType<OrienteeringLocalImprovementOperator>()) {
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[11191] | 277 | op.IntegerVectorParameter.ActualName = SolutionCreator.IntegerVectorParameter.ActualName;
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[11194] | 278 | op.DistanceMatrixParameter.ActualName = DistanceMatrixParameter.Name;
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| 279 | op.ScoresParameter.ActualName = ScoresParameter.Name;
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| 280 | op.MaximumDistanceParameter.ActualName = MaximumDistanceParameter.Name;
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| 281 | op.StartingPointParameter.ActualName = StartingPointParameter.Name;
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| 282 | op.TerminusPointParameter.ActualName = TerminusPointParameter.Name;
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| 283 | op.FixedPenaltyParameter.ActualName = FixedPenaltyParameter.Name;
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| 284 | }
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[11195] | 285 | foreach (var op in Operators.OfType<OrienteeringShakingOperator>()) {
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[11226] | 286 | op.IntegerVectorParameter.ActualName = SolutionCreator.IntegerVectorParameter.ActualName;
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| 287 | op.DistanceMatrixParameter.ActualName = DistanceMatrixParameter.Name;
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| 288 | op.ScoresParameter.ActualName = ScoresParameter.Name;
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| 289 | op.MaximumDistanceParameter.ActualName = MaximumDistanceParameter.Name;
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| 290 | op.StartingPointParameter.ActualName = StartingPointParameter.Name;
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| 291 | op.TerminusPointParameter.ActualName = TerminusPointParameter.Name;
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| 292 | op.FixedPenaltyParameter.ActualName = FixedPenaltyParameter.Name;
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[11195] | 293 | }
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[11186] | 294 | }
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| 295 | #endregion
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| 296 |
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[11269] | 297 | private DistanceMatrix CalculateDistanceMatrix(double[,] coordinates) {
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| 298 | var distances = DistanceHelper.GetDistanceMatrix(DistanceMeasure.Euclidean, coordinates, null, coordinates.GetLength(0));
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| 299 |
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| 300 | return new DistanceMatrix(distances);
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| 301 | }
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| 302 | private void UpdateDistanceMatrix() {
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| 303 | var coordinates = Coordinates;
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| 304 | int dimension = coordinates.Rows;
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| 305 | var distances = DistanceMatrix;
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| 306 | for (int i = 0; i < dimension - 1; i++) {
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| 307 | for (int j = i + 1; j < dimension; j++) {
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| 308 | double x1 = coordinates[i, 0];
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| 309 | double y1 = coordinates[i, 1];
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| 310 | double x2 = coordinates[j, 0];
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| 311 | double y2 = coordinates[j, 1];
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| 312 | distances[i, j] = Math.Sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2));
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| 313 | distances[j, i] = distances[i, j];
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[11191] | 314 | }
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| 315 | }
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| 316 | }
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| 317 |
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[11190] | 318 | private void InitializeInitialOrienteeringInstance() {
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[11269] | 319 | var coordinates = new double[21, 2] {
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[11190] | 320 | { 4.60, 7.10 }, { 5.70, 11.40 }, { 4.40, 12.30 }, { 2.80, 14.30 }, { 3.20, 10.30 },
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| 321 | { 3.50, 9.80 }, { 4.40, 8.40 }, { 7.80, 11.00 }, { 8.80, 9.80 }, { 7.70, 8.20 },
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| 322 | { 6.30, 7.90 }, { 5.40, 8.20 }, { 5.80, 6.80 }, { 6.70, 5.80 }, { 13.80, 13.10 },
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| 323 | { 14.10, 14.20 }, { 11.20, 13.60 }, { 9.70, 16.40 }, { 9.50, 18.80 }, { 4.70, 16.80 },
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| 324 | { 5.00, 5.60 }
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[11269] | 325 | };
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| 326 | Coordinates = new DoubleMatrix(coordinates);
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| 327 | DistanceMatrix = CalculateDistanceMatrix(coordinates);
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[11190] | 328 |
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| 329 | StartingPoint.Value = 0;
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| 330 | TerminusPoint.Value = 20;
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| 331 | MaximumDistance.Value = 30;
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| 332 |
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| 333 | 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] | 334 | }
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[11189] | 335 |
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| 336 | public void Load(CVRPData data) {
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[11245] | 337 | if (data.Coordinates == null)
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| 338 | throw new InvalidDataException("The given instance specifies no coordinates!");
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| 339 | if (data.Coordinates.GetLength(1) != 2)
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| 340 | 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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| 341 |
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| 342 | // Clear old solutions
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| 343 | BestKnownQuality = null;
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| 344 | BestKnownSolution = null;
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| 345 |
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[11189] | 346 | Name = data.Name;
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| 347 | Description = data.Description;
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| 348 |
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[11245] | 349 | Coordinates = new DoubleMatrix(data.Coordinates);
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[11269] | 350 | DistanceMatrix = data.Distances != null
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| 351 | ? new DistanceMatrix(data.Distances)
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| 352 | : CalculateDistanceMatrix(data.Coordinates);
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[11245] | 353 |
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[11269] | 354 | StartingPoint = new IntValue(0); // Depot is interpreted as start point
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| 355 | TerminusPoint = new IntValue(0); // Last city is interpreted als end point
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[11189] | 356 |
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[11245] | 357 | MaximumDistance = new DoubleValue(data.Capacity * 2); // capacity is interpreted as max distance
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[11189] | 358 | Scores = new DoubleArray(data.Demands); // demands are interpreted as scores
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| 359 |
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[11245] | 360 | OnReset();
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[11189] | 361 | }
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[11261] | 362 |
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| 363 | public void Load(OPData data) {
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| 364 | if (data.Coordinates == null)
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| 365 | throw new InvalidDataException("The given instance specifies no coordinates!");
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| 366 | if (data.Coordinates.GetLength(1) != 2)
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| 367 | 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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| 368 |
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| 369 | // Clear old solutions
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| 370 | BestKnownQuality = null;
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| 371 | BestKnownSolution = null;
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| 372 |
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| 373 | Name = data.Name;
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| 374 | Description = data.Description;
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| 375 |
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| 376 | Coordinates = new DoubleMatrix(data.Coordinates);
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| 377 | if (data.Distances != null)
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| 378 | DistanceMatrix = new DistanceMatrix(data.Distances);
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| 379 | else
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| 380 | data.GetDistanceMatrix();
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| 381 |
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| 382 | StartingPoint = new IntValue(data.StartingPoint);
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| 383 | TerminusPoint = new IntValue(data.TerminusPoint);
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| 384 |
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| 385 | MaximumDistance = new DoubleValue(data.MaximumDistance);
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| 386 | Scores = new DoubleArray(data.Scores);
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| 387 | }
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[11186] | 388 | }
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| 389 | } |
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