[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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[11190] | 23 | using System.Linq;
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[11186] | 24 | using HeuristicLab.Common;
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| 25 | using HeuristicLab.Core;
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[11187] | 26 | using HeuristicLab.Data;
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[11186] | 27 | using HeuristicLab.Encodings.IntegerVectorEncoding;
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| 28 | using HeuristicLab.Optimization;
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[11187] | 29 | using HeuristicLab.Parameters;
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[11186] | 30 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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[11189] | 31 | using HeuristicLab.Problems.Instances;
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[11186] | 32 |
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| 33 | namespace HeuristicLab.Problems.Orienteering {
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| 34 |
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| 35 | [Item("Orienteering Problem", "Represents a single objective Orienteering Problem.")]
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| 36 | [Creatable("Problems")]
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| 37 | [StorableClass]
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| 38 | public class OrienteeringProblem
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| 39 | : SingleObjectiveHeuristicOptimizationProblem<IOrienteeringEvaluator, IIntegerVectorCreator>,
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[11189] | 40 | IStorableContent, IProblemInstanceConsumer<CVRPData> {
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[11186] | 41 |
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| 42 | public string Filename { get; set; }
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| 43 |
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[11187] | 44 | #region Parameter Properties
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| 45 | public OptionalValueParameter<DoubleMatrix> CoordinatesParameter {
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| 46 | get { return (OptionalValueParameter<DoubleMatrix>)Parameters["Coordinates"]; }
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| 47 | }
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[11191] | 48 | public ValueParameter<DistanceMatrix> DistanceMatrixParameter {
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| 49 | get { return (ValueParameter<DistanceMatrix>)Parameters["DistanceMatrix"]; }
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[11187] | 50 | }
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| 51 |
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| 52 | public ValueParameter<IntValue> StartingPointParameter {
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| 53 | get { return (ValueParameter<IntValue>)Parameters["StartingPoint"]; }
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| 54 | }
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| 55 | public ValueParameter<IntValue> TerminusPointParameter {
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| 56 | get { return (ValueParameter<IntValue>)Parameters["TerminusPoint"]; }
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| 57 | }
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| 58 | public ValueParameter<DoubleValue> MaximumDistanceParameter {
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| 59 | get { return (ValueParameter<DoubleValue>)Parameters["MaximumDistance"]; }
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| 60 | }
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| 61 | public ValueParameter<DoubleArray> ScoresParameter {
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| 62 | get { return (ValueParameter<DoubleArray>)Parameters["Scores"]; }
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| 63 | }
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| 64 | public ValueParameter<DoubleValue> FixedPenaltyParameter {
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| 65 | get { return (ValueParameter<DoubleValue>)Parameters["FixedPenalty"]; }
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| 66 | }
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| 67 |
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| 68 | public OptionalValueParameter<IntegerVector> BestKnownSolutionParameter {
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| 69 | get { return (OptionalValueParameter<IntegerVector>)Parameters["BestKnownSolution"]; }
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| 70 | }
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| 71 | #endregion
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| 72 |
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| 73 | #region Properties
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| 74 | public DoubleMatrix Coordinates {
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| 75 | get { return CoordinatesParameter.Value; }
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| 76 | set { CoordinatesParameter.Value = value; }
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| 77 | }
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| 78 | public DistanceMatrix DistanceMatrix {
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| 79 | get { return DistanceMatrixParameter.Value; }
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| 80 | set { DistanceMatrixParameter.Value = value; }
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| 81 | }
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[11189] | 82 | public IntValue StartingPoint {
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| 83 | get { return StartingPointParameter.Value; }
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| 84 | set { StartingPointParameter.Value = value; }
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| 85 | }
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| 86 | public IntValue TerminusPoint {
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| 87 | get { return TerminusPointParameter.Value; }
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| 88 | set { TerminusPointParameter.Value = value; }
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| 89 | }
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[11187] | 90 | public DoubleValue MaximumDistance {
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| 91 | get { return MaximumDistanceParameter.Value; }
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| 92 | set { MaximumDistanceParameter.Value = value; }
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| 93 | }
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| 94 | public DoubleArray Scores {
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| 95 | get { return ScoresParameter.Value; }
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| 96 | set { ScoresParameter.Value = value; }
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| 97 | }
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[11189] | 98 | public DoubleValue FixedPenalty {
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| 99 | get { return FixedPenaltyParameter.Value; }
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| 100 | set { FixedPenaltyParameter.Value = value; }
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| 101 | }
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[11187] | 102 | public IntegerVector BestKnownSolution {
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| 103 | get { return BestKnownSolutionParameter.Value; }
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| 104 | set { BestKnownSolutionParameter.Value = value; }
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| 105 | }
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[11190] | 106 | private BestOrienteeringSolutionAnalyser BestOrienteeringSolutionAnalyser {
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| 107 | get { return Operators.OfType<BestOrienteeringSolutionAnalyser>().SingleOrDefault(); }
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| 108 | }
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[11187] | 109 | #endregion
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| 110 |
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[11186] | 111 | [StorableConstructor]
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| 112 | private OrienteeringProblem(bool deserializing)
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| 113 | : base(deserializing) {
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| 114 | }
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| 115 | private OrienteeringProblem(OrienteeringProblem original, Cloner cloner)
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| 116 | : base(original, cloner) {
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| 117 | RegisterEventHandlers();
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| 118 | }
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| 119 | public override IDeepCloneable Clone(Cloner cloner) {
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| 120 | return new OrienteeringProblem(this, cloner);
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| 121 | }
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| 122 | public OrienteeringProblem()
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[11191] | 123 | : base(new OrienteeringEvaluator(), new GreedyOrienteeringTourCreator()) {
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[11187] | 124 | Parameters.Add(new OptionalValueParameter<DoubleMatrix>("Coordinates", "The x- and y-Coordinates of the points."));
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[11191] | 125 | Parameters.Add(new ValueParameter<DistanceMatrix>("DistanceMatrix", "The matrix which contains the distances between the points."));
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[11187] | 126 | Parameters.Add(new ValueParameter<IntValue>("StartingPoint", "Index of the starting point.", new IntValue(0)));
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| 127 | Parameters.Add(new ValueParameter<IntValue>("TerminusPoint", "Index of the ending point.", new IntValue(0)));
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| 128 | Parameters.Add(new ValueParameter<DoubleValue>("MaximumDistance", "The maximum distance constraint for a Orienteering solution."));
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| 129 | Parameters.Add(new ValueParameter<DoubleArray>("Scores", "The scores of the points.", new DoubleArray()));
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| 130 | Parameters.Add(new ValueParameter<DoubleValue>("FixedPenalty", "The penalty for each visited vertex."));
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| 131 | Parameters.Add(new OptionalValueParameter<IntegerVector>("BestKnownSolution", "The best known solution of this Orienteering instance."));
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[11186] | 132 |
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| 133 | Maximization.Value = true;
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| 134 | MaximizationParameter.Hidden = true;
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| 135 |
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| 136 | SolutionCreator.IntegerVectorParameter.ActualName = "OrienteeringSolution";
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| 137 |
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[11190] | 138 | InitializeInitialOrienteeringInstance();
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[11186] | 139 |
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| 140 | ParameterizeSolutionCreator();
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| 141 | ParameterizeEvaluator();
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| 142 |
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| 143 | InitializeOperators();
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| 144 | RegisterEventHandlers();
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| 145 | }
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| 146 |
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[11187] | 147 | #region Events
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[11186] | 148 | protected override void OnSolutionCreatorChanged() {
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| 149 | base.OnSolutionCreatorChanged();
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[11190] | 150 | SolutionCreator.IntegerVectorParameter.ActualNameChanged += SolutionCreator_IntegerVectorParameter_ActualNameChanged;
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[11186] | 151 | ParameterizeSolutionCreator();
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| 152 | ParameterizeEvaluator();
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| 153 | ParameterizeAnalyzer();
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| 154 | ParameterizeOperators();
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| 155 | }
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| 156 | protected override void OnEvaluatorChanged() {
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| 157 | base.OnEvaluatorChanged();
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| 158 | ParameterizeEvaluator();
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| 159 | ParameterizeAnalyzer();
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| 160 | }
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| 161 | private void SolutionCreator_IntegerVectorParameter_ActualNameChanged(object sender, EventArgs e) {
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| 162 | ParameterizeEvaluator();
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| 163 | ParameterizeAnalyzer();
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| 164 | ParameterizeOperators();
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| 165 | }
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[11190] | 166 | private void CoordinatesParameter_ValueChanged(object sender, EventArgs e) {
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| 167 | if (Coordinates != null) {
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| 168 | Coordinates.ItemChanged += new EventHandler<EventArgs<int, int>>(CoordinatesValue_ItemChanged);
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| 169 | Coordinates.Reset += new EventHandler(CoordinatesValue_Reset);
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| 170 | }
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| 171 | ParameterizeSolutionCreator();
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[11191] | 172 | CalculateDistanceMatrix();
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[11190] | 173 | }
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| 174 | private void CoordinatesValue_ItemChanged(object sender, EventArgs<int, int> e) {
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[11191] | 175 | CalculateDistanceMatrix();
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[11190] | 176 | }
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| 177 | private void CoordinatesValue_Reset(object sender, EventArgs e) {
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| 178 | ParameterizeSolutionCreator();
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[11191] | 179 | CalculateDistanceMatrix();
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[11190] | 180 | }
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| 181 | private void StartingPointParameter_ValueChanged(object sender, EventArgs e) {
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| 182 | ParameterizeEvaluator();
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| 183 | ParameterizeAnalyzer();
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| 184 | }
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| 185 |
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| 186 | private void TerminusPointParameter_ValueChanged(object sender, EventArgs e) {
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| 187 | ParameterizeEvaluator();
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| 188 | ParameterizeAnalyzer();
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| 189 | }
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| 190 | private void MaximumDistanceParameter_ValueChanged(object sender, EventArgs e) {
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| 191 | ParameterizeEvaluator();
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| 192 | ParameterizeAnalyzer();
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| 193 | }
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| 194 | private void ScoresParameter_ValueChanged(object sender, EventArgs e) {
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| 195 | ParameterizeEvaluator();
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| 196 | ParameterizeAnalyzer();
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| 197 | ParameterizeSolutionCreator();
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| 198 |
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| 199 | ScoresParameter.Value.Reset += new EventHandler(ScoresValue_Reset);
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| 200 | }
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| 201 | private void ScoresValue_Reset(object sender, EventArgs e) {
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| 202 | ParameterizeSolutionCreator();
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| 203 | }
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| 204 | private void FixedPenaltyParameter_ValueChanged(object sender, EventArgs e) {
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| 205 | ParameterizeEvaluator();
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| 206 | ParameterizeAnalyzer();
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| 207 | }
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[11186] | 208 | #endregion
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| 209 |
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| 210 | #region Helpers
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| 211 | [StorableHook(HookType.AfterDeserialization)]
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| 212 | private void AfterDeserialization() {
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| 213 | RegisterEventHandlers();
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| 214 | }
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| 215 |
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| 216 | private void RegisterEventHandlers() {
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[11190] | 217 | SolutionCreator.IntegerVectorParameter.ActualNameChanged += SolutionCreator_IntegerVectorParameter_ActualNameChanged;
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| 218 |
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| 219 | CoordinatesParameter.ValueChanged += CoordinatesParameter_ValueChanged;
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| 220 | if (CoordinatesParameter.Value != null) {
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| 221 | CoordinatesParameter.Value.ItemChanged += CoordinatesValue_ItemChanged;
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| 222 | CoordinatesParameter.Value.Reset += CoordinatesValue_Reset;
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| 223 | }
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| 224 |
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| 225 | StartingPointParameter.ValueChanged += StartingPointParameter_ValueChanged;
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| 226 | TerminusPointParameter.ValueChanged += TerminusPointParameter_ValueChanged;
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| 227 | MaximumDistanceParameter.ValueChanged += MaximumDistanceParameter_ValueChanged;
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| 228 |
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| 229 | ScoresParameter.ValueChanged += ScoresParameter_ValueChanged;
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| 230 | ScoresParameter.Value.Reset += ScoresValue_Reset;
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| 231 | FixedPenaltyParameter.ValueChanged += FixedPenaltyParameter_ValueChanged;
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[11186] | 232 | }
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[11190] | 233 |
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[11186] | 234 | private void ParameterizeSolutionCreator() {
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[11191] | 235 | if (SolutionCreator is GreedyOrienteeringTourCreator) {
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| 236 | var creator = (GreedyOrienteeringTourCreator)SolutionCreator;
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| 237 | creator.DistanceMatrixParameter.ActualName = DistanceMatrixParameter.Name;
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| 238 | creator.ScoresParameter.ActualName = ScoresParameter.Name;
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| 239 | creator.MaximumDistanceParameter.ActualName = MaximumDistanceParameter.Name;
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| 240 | creator.StartingPointParameter.ActualName = StartingPointParameter.Name;
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| 241 | creator.TerminusPointParameter.ActualName = TerminusPointParameter.Name;
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| 242 | creator.FixedPenaltyParameter.ActualName = FixedPenaltyParameter.Name;
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[11187] | 243 | }
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[11186] | 244 | }
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| 245 | private void ParameterizeEvaluator() {
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| 246 | if (Evaluator is OrienteeringEvaluator) {
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[11194] | 247 | var evaluator = (OrienteeringEvaluator)Evaluator;
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| 248 | evaluator.IntegerVectorParameter.ActualName = SolutionCreator.IntegerVectorParameter.ActualName;
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| 249 | evaluator.ScoresParameter.ActualName = ScoresParameter.Name;
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[11186] | 250 | }
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| 251 | }
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| 252 | private void ParameterizeAnalyzer() {
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[11191] | 253 | if (BestOrienteeringSolutionAnalyser != null) {
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| 254 | BestOrienteeringSolutionAnalyser.QualityParameter.ActualName = Evaluator.QualityParameter.ActualName;
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| 255 |
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| 256 | BestOrienteeringSolutionAnalyser.IntegerVector.ActualName = SolutionCreator.IntegerVectorParameter.ActualName;
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| 257 | BestOrienteeringSolutionAnalyser.CoordinatesParameter.ActualName = CoordinatesParameter.Name;
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| 258 | BestOrienteeringSolutionAnalyser.ScoresParameter.ActualName = ScoresParameter.Name;
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| 259 |
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| 260 | BestOrienteeringSolutionAnalyser.ResultsParameter.ActualName = "Results";
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| 261 | BestOrienteeringSolutionAnalyser.BestKnownQualityParameter.ActualName = BestKnownQualityParameter.Name;
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| 262 | BestOrienteeringSolutionAnalyser.BestKnownSolutionParameter.ActualName = BestKnownSolutionParameter.Name;
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| 263 | }
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[11186] | 264 | }
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| 265 | private void InitializeOperators() {
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[11191] | 266 | Operators.Add(new BestOrienteeringSolutionAnalyser());
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| 267 | ParameterizeAnalyzer();
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| 268 |
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[11194] | 269 | Operators.Add(new OrienteeringLocalImprovementOperator());
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[11195] | 270 | Operators.Add(new OrienteeringShakingOperator());
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[11191] | 271 | ParameterizeOperators();
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[11186] | 272 | }
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| 273 | private void ParameterizeOperators() {
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[11194] | 274 | foreach (var op in Operators.OfType<OrienteeringLocalImprovementOperator>()) {
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[11191] | 275 | op.IntegerVectorParameter.ActualName = SolutionCreator.IntegerVectorParameter.ActualName;
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[11194] | 276 | op.DistanceMatrixParameter.ActualName = DistanceMatrixParameter.Name;
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| 277 | op.ScoresParameter.ActualName = ScoresParameter.Name;
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| 278 | op.MaximumDistanceParameter.ActualName = MaximumDistanceParameter.Name;
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| 279 | op.StartingPointParameter.ActualName = StartingPointParameter.Name;
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| 280 | op.TerminusPointParameter.ActualName = TerminusPointParameter.Name;
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| 281 | op.FixedPenaltyParameter.ActualName = FixedPenaltyParameter.Name;
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| 282 | }
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[11195] | 283 | foreach (var op in Operators.OfType<OrienteeringShakingOperator>()) {
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[11226] | 284 | op.IntegerVectorParameter.ActualName = SolutionCreator.IntegerVectorParameter.ActualName;
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| 285 | op.DistanceMatrixParameter.ActualName = DistanceMatrixParameter.Name;
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| 286 | op.ScoresParameter.ActualName = ScoresParameter.Name;
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| 287 | op.MaximumDistanceParameter.ActualName = MaximumDistanceParameter.Name;
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| 288 | op.StartingPointParameter.ActualName = StartingPointParameter.Name;
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| 289 | op.TerminusPointParameter.ActualName = TerminusPointParameter.Name;
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| 290 | op.FixedPenaltyParameter.ActualName = FixedPenaltyParameter.Name;
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[11195] | 291 | }
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[11186] | 292 | }
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| 293 | #endregion
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| 294 |
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[11191] | 295 | private void CalculateDistanceMatrix() {
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| 296 | var distances = new double[Coordinates.Rows, Coordinates.Rows];
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| 297 | for (int i = 0; i < Coordinates.Rows; i++) {
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| 298 | for (int j = 0; j < Coordinates.Rows; j++) {
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| 299 | double distanceX = Math.Abs(Coordinates[i, 0] - Coordinates[j, 0]);
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| 300 | double distanceY = Math.Abs(Coordinates[i, 1] - Coordinates[j, 1]);
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| 301 | distances[i, j] = Math.Sqrt(Math.Pow(distanceX, 2) + Math.Pow(distanceY, 2));
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| 302 | }
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| 303 | }
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| 304 | DistanceMatrix = new DistanceMatrix(distances);
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| 305 | }
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| 306 |
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[11190] | 307 | private void InitializeInitialOrienteeringInstance() {
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| 308 | Coordinates = new DoubleMatrix(new double[21, 2] {
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| 309 | { 4.60, 7.10 }, { 5.70, 11.40 }, { 4.40, 12.30 }, { 2.80, 14.30 }, { 3.20, 10.30 },
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| 310 | { 3.50, 9.80 }, { 4.40, 8.40 }, { 7.80, 11.00 }, { 8.80, 9.80 }, { 7.70, 8.20 },
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| 311 | { 6.30, 7.90 }, { 5.40, 8.20 }, { 5.80, 6.80 }, { 6.70, 5.80 }, { 13.80, 13.10 },
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| 312 | { 14.10, 14.20 }, { 11.20, 13.60 }, { 9.70, 16.40 }, { 9.50, 18.80 }, { 4.70, 16.80 },
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| 313 | { 5.00, 5.60 }
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| 314 | });
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[11191] | 315 | CalculateDistanceMatrix();
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[11190] | 316 |
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| 317 | StartingPoint.Value = 0;
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| 318 | TerminusPoint.Value = 20;
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| 319 | MaximumDistance.Value = 30;
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| 320 |
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| 321 | 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] | 322 | }
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[11189] | 323 |
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| 324 | public void Load(CVRPData data) {
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| 325 | if (data.Coordinates == null && data.Distances == null)
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| 326 | throw new System.IO.InvalidDataException("The given instance specifies neither coordinates nor distances!");
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| 327 | if (data.Coordinates != null && data.Coordinates.GetLength(1) != 2)
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| 328 | throw new System.IO.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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| 329 |
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| 330 | Name = data.Name;
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| 331 | Description = data.Description;
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| 332 |
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| 333 | Coordinates = data.Coordinates != null ? new DoubleMatrix(data.Coordinates) : null;
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[11191] | 334 | if (Coordinates == null)
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| 335 | DistanceMatrix = new DistanceMatrix(data.Distances);
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[11189] | 336 | StartingPoint = new IntValue(0);// Depot is interpreted as start and endpoint (default)
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| 337 | TerminusPoint = new IntValue(0);
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| 338 |
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| 339 | MaximumDistance = new DoubleValue(data.Capacity); // capacity is interpreted as max distance
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| 340 | Scores = new DoubleArray(data.Demands); // demands are interpreted as scores
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| 341 |
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| 342 | BestKnownQuality = null;
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| 343 | BestKnownSolution = null;
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| 344 | }
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[11186] | 345 | }
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| 346 | } |
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