[2796] | 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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| 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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[2865] | 22 | using System;
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[2975] | 23 | using System.Collections.Generic;
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[2865] | 24 | using System.Drawing;
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| 25 | using System.Linq;
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[2975] | 26 | using HeuristicLab.Common;
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[2796] | 27 | using HeuristicLab.Core;
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| 28 | using HeuristicLab.Data;
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[3053] | 29 | using HeuristicLab.Encodings.PermutationEncoding;
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[2834] | 30 | using HeuristicLab.Optimization;
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[2805] | 31 | using HeuristicLab.Parameters;
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[2796] | 32 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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[2865] | 33 | using HeuristicLab.PluginInfrastructure;
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[2796] | 34 |
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[2883] | 35 | namespace HeuristicLab.Problems.TSP {
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[2796] | 36 | [Item("TSP", "Represents a symmetric Traveling Salesman Problem.")]
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| 37 | [Creatable("Problems")]
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[3017] | 38 | [StorableClass]
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[2865] | 39 | public sealed class TSP : ParameterizedNamedItem, ISingleObjectiveProblem {
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| 40 | public override Image ItemImage {
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| 41 | get { return HeuristicLab.Common.Resources.VS2008ImageLibrary.Type; }
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[2805] | 42 | }
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| 43 |
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[2975] | 44 | #region Parameter Properties
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[3048] | 45 | public ValueParameter<BoolValue> MaximizationParameter {
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| 46 | get { return (ValueParameter<BoolValue>)Parameters["Maximization"]; }
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[2805] | 47 | }
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[2975] | 48 | IParameter ISingleObjectiveProblem.MaximizationParameter {
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| 49 | get { return MaximizationParameter; }
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[2865] | 50 | }
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[3048] | 51 | public ValueParameter<DoubleMatrix> CoordinatesParameter {
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| 52 | get { return (ValueParameter<DoubleMatrix>)Parameters["Coordinates"]; }
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[2865] | 53 | }
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[3066] | 54 | public OptionalValueParameter<DoubleMatrix> DistanceMatrixParameter {
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| 55 | get { return (OptionalValueParameter<DoubleMatrix>)Parameters["DistanceMatrix"]; }
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| 56 | }
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| 57 | public ValueParameter<BoolValue> UseDistanceMatrixParameter {
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| 58 | get { return (ValueParameter<BoolValue>)Parameters["UseDistanceMatrix"]; }
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| 59 | }
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[2975] | 60 | public ValueParameter<IPermutationCreator> SolutionCreatorParameter {
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| 61 | get { return (ValueParameter<IPermutationCreator>)Parameters["SolutionCreator"]; }
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[2865] | 62 | }
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[2975] | 63 | IParameter IProblem.SolutionCreatorParameter {
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| 64 | get { return SolutionCreatorParameter; }
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[2865] | 65 | }
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[2975] | 66 | public ValueParameter<ITSPEvaluator> EvaluatorParameter {
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| 67 | get { return (ValueParameter<ITSPEvaluator>)Parameters["Evaluator"]; }
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| 68 | }
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| 69 | IParameter IProblem.EvaluatorParameter {
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| 70 | get { return EvaluatorParameter; }
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| 71 | }
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[3107] | 72 | public OptionalValueParameter<ITSPSolutionsVisualizer> VisualizerParameter {
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| 73 | get { return (OptionalValueParameter<ITSPSolutionsVisualizer>)Parameters["Visualizer"]; }
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| 74 | }
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| 75 | IParameter IProblem.VisualizerParameter {
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| 76 | get { return VisualizerParameter; }
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| 77 | }
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[3048] | 78 | public OptionalValueParameter<DoubleValue> BestKnownQualityParameter {
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| 79 | get { return (OptionalValueParameter<DoubleValue>)Parameters["BestKnownQuality"]; }
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[2975] | 80 | }
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[3080] | 81 | IParameter ISingleObjectiveProblem.BestKnownQualityParameter {
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| 82 | get { return BestKnownQualityParameter; }
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| 83 | }
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[2975] | 84 | #endregion
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[2805] | 85 |
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[2975] | 86 | #region Properties
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[3048] | 87 | public DoubleMatrix Coordinates {
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[2975] | 88 | get { return CoordinatesParameter.Value; }
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| 89 | set { CoordinatesParameter.Value = value; }
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[2865] | 90 | }
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[3066] | 91 | public DoubleMatrix DistanceMatrix {
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| 92 | get { return DistanceMatrixParameter.Value; }
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| 93 | set { DistanceMatrixParameter.Value = value; }
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| 94 | }
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| 95 | public BoolValue UseDistanceMatrix {
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| 96 | get { return UseDistanceMatrixParameter.Value; }
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| 97 | set { UseDistanceMatrixParameter.Value = value; }
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| 98 | }
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[2975] | 99 | public IPermutationCreator SolutionCreator {
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[2865] | 100 | get { return SolutionCreatorParameter.Value; }
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[2975] | 101 | set { SolutionCreatorParameter.Value = value; }
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[2865] | 102 | }
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[2975] | 103 | ISolutionCreator IProblem.SolutionCreator {
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| 104 | get { return SolutionCreatorParameter.Value; }
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| 105 | }
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| 106 | public ITSPEvaluator Evaluator {
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[2865] | 107 | get { return EvaluatorParameter.Value; }
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[2975] | 108 | set { EvaluatorParameter.Value = value; }
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[2865] | 109 | }
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[2975] | 110 | ISingleObjectiveEvaluator ISingleObjectiveProblem.Evaluator {
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| 111 | get { return EvaluatorParameter.Value; }
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| 112 | }
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[2865] | 113 | IEvaluator IProblem.Evaluator {
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| 114 | get { return EvaluatorParameter.Value; }
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| 115 | }
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[3107] | 116 | public ITSPSolutionsVisualizer Visualizer {
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| 117 | get { return VisualizerParameter.Value; }
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| 118 | set { VisualizerParameter.Value = value; }
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| 119 | }
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| 120 | ISolutionsVisualizer IProblem.Visualizer {
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| 121 | get { return VisualizerParameter.Value; }
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| 122 | }
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[3048] | 123 | public DoubleValue BestKnownQuality {
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[2975] | 124 | get { return BestKnownQualityParameter.Value; }
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| 125 | set { BestKnownQualityParameter.Value = value; }
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| 126 | }
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[2986] | 127 | private List<IPermutationOperator> operators;
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[2975] | 128 | public IEnumerable<IOperator> Operators {
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[2986] | 129 | get { return operators.Cast<IOperator>(); }
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[2865] | 130 | }
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[2975] | 131 | #endregion
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[2865] | 132 |
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[2796] | 133 | public TSP()
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| 134 | : base() {
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[2891] | 135 | RandomPermutationCreator creator = new RandomPermutationCreator();
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| 136 | TSPRoundedEuclideanPathEvaluator evaluator = new TSPRoundedEuclideanPathEvaluator();
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[3107] | 137 | BestPathTSPTourVisualizer visualizer = new BestPathTSPTourVisualizer();
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[2891] | 138 |
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[3048] | 139 | Parameters.Add(new ValueParameter<BoolValue>("Maximization", "Set to false as the Traveling Salesman Problem is a minimization problem.", new BoolValue(false)));
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| 140 | Parameters.Add(new ValueParameter<DoubleMatrix>("Coordinates", "The x- and y-Coordinates of the cities.", new DoubleMatrix(0, 0)));
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[3066] | 141 | Parameters.Add(new OptionalValueParameter<DoubleMatrix>("DistanceMatrix", "The matrix which contains the distances between the cities."));
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| 142 | Parameters.Add(new ValueParameter<BoolValue>("UseDistanceMatrix", "True if a distance matrix should be calculated and used for evaluation, otherwise false.", new BoolValue(true)));
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[2891] | 143 | Parameters.Add(new ValueParameter<IPermutationCreator>("SolutionCreator", "The operator which should be used to create new TSP solutions.", creator));
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| 144 | Parameters.Add(new ValueParameter<ITSPEvaluator>("Evaluator", "The operator which should be used to evaluate TSP solutions.", evaluator));
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[3107] | 145 | Parameters.Add(new OptionalValueParameter<ITSPSolutionsVisualizer>("Visualizer", "The operator which should be used to visualize TSP solutions.", visualizer));
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[3048] | 146 | Parameters.Add(new OptionalValueParameter<DoubleValue>("BestKnownQuality", "The quality of the best known solution of this TSP instance."));
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[2865] | 147 |
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| 148 | creator.PermutationParameter.ActualName = "TSPTour";
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| 149 | evaluator.QualityParameter.ActualName = "TSPTourLength";
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[2975] | 150 | ParameterizeSolutionCreator();
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| 151 | ParameterizeEvaluator();
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[3107] | 152 | ParameterizeVisualizer();
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[2865] | 153 |
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[2986] | 154 | Initialize();
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[2975] | 155 | }
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[2986] | 156 | [StorableConstructor]
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| 157 | private TSP(bool deserializing) : base() { }
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[2891] | 158 |
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[2975] | 159 | public override IDeepCloneable Clone(Cloner cloner) {
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| 160 | TSP clone = (TSP)base.Clone(cloner);
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[2986] | 161 | clone.Initialize();
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[2975] | 162 | return clone;
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[2805] | 163 | }
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[2796] | 164 |
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[2805] | 165 | public void ImportFromTSPLIB(string filename) {
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| 166 | TSPLIBParser parser = new TSPLIBParser(filename);
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| 167 | parser.Parse();
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[3048] | 168 | Coordinates = new DoubleMatrix(parser.Vertices);
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[2796] | 169 | }
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[2865] | 170 |
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[2975] | 171 | #region Events
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| 172 | public event EventHandler SolutionCreatorChanged;
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| 173 | private void OnSolutionCreatorChanged() {
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| 174 | if (SolutionCreatorChanged != null)
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| 175 | SolutionCreatorChanged(this, EventArgs.Empty);
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[2865] | 176 | }
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[2975] | 177 | public event EventHandler EvaluatorChanged;
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| 178 | private void OnEvaluatorChanged() {
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| 179 | if (EvaluatorChanged != null)
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| 180 | EvaluatorChanged(this, EventArgs.Empty);
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| 181 | }
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[3107] | 182 | public event EventHandler VisualizerChanged;
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| 183 | private void OnVisualizerChanged() {
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| 184 | if (VisualizerChanged != null)
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| 185 | VisualizerChanged(this, EventArgs.Empty);
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| 186 | }
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[2975] | 187 | public event EventHandler OperatorsChanged;
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| 188 | private void OnOperatorsChanged() {
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| 189 | if (OperatorsChanged != null)
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| 190 | OperatorsChanged(this, EventArgs.Empty);
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| 191 | }
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| 192 |
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| 193 | private void CoordinatesParameter_ValueChanged(object sender, EventArgs e) {
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| 194 | Coordinates.ItemChanged += new EventHandler<EventArgs<int, int>>(Coordinates_ItemChanged);
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| 195 | Coordinates.Reset += new EventHandler(Coordinates_Reset);
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| 196 | ParameterizeSolutionCreator();
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[3066] | 197 | ClearDistanceMatrix();
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[2975] | 198 | }
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| 199 | private void Coordinates_ItemChanged(object sender, EventArgs<int, int> e) {
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[3066] | 200 | ClearDistanceMatrix();
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[2975] | 201 | }
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| 202 | private void Coordinates_Reset(object sender, EventArgs e) {
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| 203 | ParameterizeSolutionCreator();
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[3066] | 204 | ClearDistanceMatrix();
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[2975] | 205 | }
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[2865] | 206 | private void SolutionCreatorParameter_ValueChanged(object sender, EventArgs e) {
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[2975] | 207 | SolutionCreator.PermutationParameter.ActualNameChanged += new EventHandler(SolutionCreator_PermutationParameter_ActualNameChanged);
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| 208 | ParameterizeSolutionCreator();
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| 209 | ParameterizeEvaluator();
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[3107] | 210 | ParameterizeVisualizer();
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[2975] | 211 | ParameterizeOperators();
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[2865] | 212 | OnSolutionCreatorChanged();
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| 213 | }
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[2975] | 214 | private void SolutionCreator_PermutationParameter_ActualNameChanged(object sender, EventArgs e) {
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| 215 | ParameterizeEvaluator();
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[3107] | 216 | ParameterizeVisualizer();
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[2975] | 217 | ParameterizeOperators();
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| 218 | }
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[2865] | 219 | private void EvaluatorParameter_ValueChanged(object sender, EventArgs e) {
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[2975] | 220 | ParameterizeEvaluator();
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[3107] | 221 | ParameterizeVisualizer();
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[3066] | 222 | ClearDistanceMatrix();
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[2865] | 223 | OnEvaluatorChanged();
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| 224 | }
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[3107] | 225 | private void VisualizerParameter_ValueChanged(object sender, EventArgs e) {
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| 226 | ParameterizeVisualizer();
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| 227 | OnVisualizerChanged();
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| 228 | }
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[3074] | 229 | private void MoveGenerator_TwoOptMoveParameter_ActualNameChanged(object sender, EventArgs e) {
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| 230 | string name = ((ILookupParameter<TwoOptMove>)sender).ActualName;
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| 231 | foreach (ITwoOptPermutationMoveOperator op in Operators.OfType<ITwoOptPermutationMoveOperator>()) {
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[3099] | 232 | op.TwoOptMoveParameter.ActualName = name;
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[3074] | 233 | }
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| 234 | }
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| 235 | private void MoveGenerator_ThreeOptMoveParameter_ActualNameChanged(object sender, EventArgs e) {
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| 236 | string name = ((ILookupParameter<ThreeOptMove>)sender).ActualName;
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| 237 | foreach (IThreeOptPermutationMoveOperator op in Operators.OfType<IThreeOptPermutationMoveOperator>()) {
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[3099] | 238 | op.ThreeOptMoveParameter.ActualName = name;
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[3074] | 239 | }
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| 240 | }
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[2975] | 241 | #endregion
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[2865] | 242 |
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[2975] | 243 | #region Helpers
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[2986] | 244 | [StorableHook(HookType.AfterDeserialization)]
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| 245 | private void Initialize() {
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| 246 | InitializeOperators();
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[2975] | 247 | CoordinatesParameter.ValueChanged += new EventHandler(CoordinatesParameter_ValueChanged);
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| 248 | Coordinates.ItemChanged += new EventHandler<EventArgs<int, int>>(Coordinates_ItemChanged);
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| 249 | Coordinates.Reset += new EventHandler(Coordinates_Reset);
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| 250 | SolutionCreatorParameter.ValueChanged += new EventHandler(SolutionCreatorParameter_ValueChanged);
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| 251 | SolutionCreator.PermutationParameter.ActualNameChanged += new EventHandler(SolutionCreator_PermutationParameter_ActualNameChanged);
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| 252 | EvaluatorParameter.ValueChanged += new EventHandler(EvaluatorParameter_ValueChanged);
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[3107] | 253 | VisualizerParameter.ValueChanged += new EventHandler(VisualizerParameter_ValueChanged);
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[2865] | 254 | }
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[3099] | 255 | private void InitializeOperators() {
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| 256 | operators = new List<IPermutationOperator>();
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| 257 | if (ApplicationManager.Manager != null) {
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| 258 | operators.AddRange(ApplicationManager.Manager.GetInstances<IPermutationOperator>());
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| 259 | ParameterizeOperators();
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| 260 | }
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| 261 | InitializeMoveGenerators();
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| 262 | }
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| 263 | private void InitializeMoveGenerators() {
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| 264 | foreach (ITwoOptPermutationMoveOperator op in Operators.OfType<ITwoOptPermutationMoveOperator>()) {
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| 265 | if (op is IMoveGenerator) {
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| 266 | op.TwoOptMoveParameter.ActualNameChanged += new EventHandler(MoveGenerator_TwoOptMoveParameter_ActualNameChanged);
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| 267 | }
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| 268 | }
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| 269 | foreach (IThreeOptPermutationMoveOperator op in Operators.OfType<IThreeOptPermutationMoveOperator>()) {
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| 270 | if (op is IMoveGenerator) {
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| 271 | op.ThreeOptMoveParameter.ActualNameChanged += new EventHandler(MoveGenerator_ThreeOptMoveParameter_ActualNameChanged);
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| 272 | }
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| 273 | }
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| 274 | }
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[2975] | 275 | private void ParameterizeSolutionCreator() {
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[3048] | 276 | SolutionCreator.LengthParameter.Value = new IntValue(Coordinates.Rows);
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[2865] | 277 | }
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[2975] | 278 | private void ParameterizeEvaluator() {
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| 279 | if (Evaluator is ITSPPathEvaluator)
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| 280 | ((ITSPPathEvaluator)Evaluator).PermutationParameter.ActualName = SolutionCreator.PermutationParameter.ActualName;
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[3066] | 281 | if (Evaluator is ITSPCoordinatesPathEvaluator) {
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| 282 | ITSPCoordinatesPathEvaluator evaluator = (ITSPCoordinatesPathEvaluator)Evaluator;
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| 283 | evaluator.CoordinatesParameter.ActualName = CoordinatesParameter.Name;
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| 284 | evaluator.DistanceMatrixParameter.ActualName = DistanceMatrixParameter.Name;
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| 285 | evaluator.UseDistanceMatrixParameter.ActualName = UseDistanceMatrixParameter.Name;
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| 286 | }
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[2865] | 287 | }
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[3107] | 288 | private void ParameterizeVisualizer() {
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| 289 | Visualizer.QualityParameter.ActualName = Evaluator.QualityParameter.ActualName;
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| 290 | if (Visualizer is ICoordinatesTSPSolutionsVisualizer)
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| 291 | ((ICoordinatesTSPSolutionsVisualizer)Visualizer).CoordinatesParameter.ActualName = CoordinatesParameter.Name;
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| 292 | if (Visualizer is IPathCoordinatesTSPSolutionsVisualizer)
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| 293 | ((IPathCoordinatesTSPSolutionsVisualizer)Visualizer).PermutationParameter.ActualName = SolutionCreator.PermutationParameter.ActualName;
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| 294 | }
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[2975] | 295 | private void ParameterizeOperators() {
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| 296 | foreach (IPermutationCrossover op in Operators.OfType<IPermutationCrossover>()) {
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| 297 | op.ParentsParameter.ActualName = SolutionCreator.PermutationParameter.ActualName;
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| 298 | op.ChildParameter.ActualName = SolutionCreator.PermutationParameter.ActualName;
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| 299 | }
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| 300 | foreach (IPermutationManipulator op in Operators.OfType<IPermutationManipulator>()) {
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| 301 | op.PermutationParameter.ActualName = SolutionCreator.PermutationParameter.ActualName;
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| 302 | }
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[3074] | 303 | foreach (IPermutationMoveOperator op in Operators.OfType<IPermutationMoveOperator>()) {
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| 304 | op.PermutationParameter.ActualName = SolutionCreator.PermutationParameter.ActualName;
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| 305 | }
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| 306 | foreach (ITSPPathMoveEvaluator op in Operators.OfType<ITSPPathMoveEvaluator>()) {
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| 307 | op.CoordinatesParameter.ActualName = CoordinatesParameter.Name;
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| 308 | op.DistanceMatrixParameter.ActualName = DistanceMatrixParameter.Name;
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| 309 | op.UseDistanceMatrixParameter.ActualName = UseDistanceMatrixParameter.Name;
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| 310 | }
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[2975] | 311 | }
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[3074] | 312 |
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[3066] | 313 | private void ClearDistanceMatrix() {
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| 314 | DistanceMatrixParameter.Value = null;
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| 315 | }
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[2975] | 316 | #endregion
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[2796] | 317 | }
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| 318 | }
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