| 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2012 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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| 23 | using System.Drawing;
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| 24 | using System.Linq;
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| 25 | using HeuristicLab.Common;
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| 26 | using HeuristicLab.Core;
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| 27 | using HeuristicLab.Data;
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| 28 | using HeuristicLab.Encodings.IntegerVectorEncoding;
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| 29 | using HeuristicLab.Optimization;
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| 30 | using HeuristicLab.Parameters;
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| 31 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 32 | using HeuristicLab.PluginInfrastructure;
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| 33 |
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| 34 | namespace HeuristicLab.Problems.GeneralizedQuadraticAssignment {
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| 35 | [Item("Generalized Quadratic Assignment Problem", "The Generalized Quadratic Assignment Problem (GQAP) is a generalization of the QAP in that it allows to assign multiple facilities (here called equipment) to a single location. The problem is described in Lee, C.G., and Ma, Z. 2003. The Generalized Quadratic Assignment Problem. Technical Report M5S 3G8, University of Toronto, Canada.")]
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| 36 | [Creatable("Problems")]
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| 37 | [StorableClass]
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| 38 | public sealed class GeneralizedQuadraticAssignmentProblem : SingleObjectiveHeuristicOptimizationProblem<IGQAPEvaluator, IGQAPSolutionCreator>, IStorableContent {
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| 39 | public override Image ItemImage {
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| 40 | get { return HeuristicLab.Common.Resources.VSImageLibrary.Type; }
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| 41 | }
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| 42 |
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| 43 | public string Filename { get; set; }
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| 44 |
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| 45 | #region Parameter Properties
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| 46 | public ValueParameter<DoubleMatrix> WeightsParameter {
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| 47 | get { return (ValueParameter<DoubleMatrix>)Parameters["Weights"]; }
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| 48 | }
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| 49 | public ValueParameter<DoubleMatrix> DistancesParameter {
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| 50 | get { return (ValueParameter<DoubleMatrix>)Parameters["Distances"]; }
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| 51 | }
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| 52 | public ValueParameter<DoubleMatrix> InstallationCostsParameter {
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| 53 | get { return (ValueParameter<DoubleMatrix>)Parameters["InstallationCosts"]; }
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| 54 | }
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| 55 | public ValueParameter<DoubleArray> DemandsParameter {
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| 56 | get { return (ValueParameter<DoubleArray>)Parameters["Demands"]; }
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| 57 | }
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| 58 | public ValueParameter<DoubleArray> CapacitiesParameter {
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| 59 | get { return (ValueParameter<DoubleArray>)Parameters["Capacities"]; }
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| 60 | }
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| 61 | public FixedValueParameter<DoubleValue> TransportationCostsParameter {
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| 62 | get { return (FixedValueParameter<DoubleValue>)Parameters["TransportationCosts"]; }
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| 63 | }
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| 64 | public FixedValueParameter<DoubleValue> OverbookedCapacityPenaltyParameter {
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| 65 | get { return (FixedValueParameter<DoubleValue>)Parameters["OverbookedCapacityPenalty"]; }
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| 66 | }
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| 67 | public OptionalValueParameter<IItem> BestKnownSolutionParameter {
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| 68 | get { return (OptionalValueParameter<IItem>)Parameters["BestKnownSolution"]; }
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| 69 | }
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| 70 | #endregion
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| 71 |
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| 72 | #region Properties
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| 73 | public DoubleMatrix Weights {
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| 74 | get { return WeightsParameter.Value; }
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| 75 | set { WeightsParameter.Value = value; }
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| 76 | }
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| 77 | public DoubleMatrix Distances {
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| 78 | get { return DistancesParameter.Value; }
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| 79 | set { DistancesParameter.Value = value; }
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| 80 | }
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| 81 | public DoubleMatrix InstallationCosts {
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| 82 | get { return InstallationCostsParameter.Value; }
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| 83 | set { InstallationCostsParameter.Value = value; }
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| 84 | }
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| 85 | public DoubleArray Demands {
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| 86 | get { return DemandsParameter.Value; }
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| 87 | set { DemandsParameter.Value = value; }
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| 88 | }
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| 89 | public DoubleArray Capacities {
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| 90 | get { return CapacitiesParameter.Value; }
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| 91 | set { CapacitiesParameter.Value = value; }
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| 92 | }
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| 93 | public double TransportationCosts {
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| 94 | get { return TransportationCostsParameter.Value.Value; }
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| 95 | set { TransportationCostsParameter.Value.Value = value; }
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| 96 | }
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| 97 | public double OverbookedCapacityPenalty {
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| 98 | get { return TransportationCostsParameter.Value.Value; }
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| 99 | set { TransportationCostsParameter.Value.Value = value; }
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| 100 | }
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| 101 | #endregion
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| 102 |
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| 103 | [Storable]
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| 104 | private BestGQAPSolutionAnalyzer bestSolutionAnalyzer;
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| 105 | public BestGQAPSolutionAnalyzer BestSolutionAnalyzer {
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| 106 | get { return bestSolutionAnalyzer; }
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| 107 | set { bestSolutionAnalyzer = value; }
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| 108 | }
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| 109 |
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| 110 | [StorableConstructor]
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| 111 | private GeneralizedQuadraticAssignmentProblem(bool deserializing) : base(deserializing) { }
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| 112 | private GeneralizedQuadraticAssignmentProblem(GeneralizedQuadraticAssignmentProblem original, Cloner cloner)
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| 113 | : base(original, cloner) {
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| 114 | bestSolutionAnalyzer = cloner.Clone(original.bestSolutionAnalyzer);
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| 115 | AttachEventHandlers();
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| 116 | }
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| 117 | public GeneralizedQuadraticAssignmentProblem()
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| 118 | : base(new GQAPEvaluator(), new RandomSolutionCreator()) {
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| 119 | Parameters.Add(new ValueParameter<DoubleMatrix>("Weights", "The weights matrix describes the flows between the equipments.", new DoubleMatrix()));
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| 120 | Parameters.Add(new ValueParameter<DoubleMatrix>("Distances", "The distances matrix describes the distances between the locations at which the equipment can be installed.", new DoubleMatrix()));
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| 121 | Parameters.Add(new ValueParameter<DoubleMatrix>("InstallationCosts", "The installation costs matrix describes the installation costs of installing equipment i at location j", new DoubleMatrix()));
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| 122 | Parameters.Add(new FixedValueParameter<DoubleValue>("TransportationCosts", "The transportation cost represents the flow-unit per distance-unit cost factor. This value can also be set to 1 if these costs are factored into the weights matrix already.", new DoubleValue(1)));
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| 123 | Parameters.Add(new FixedValueParameter<DoubleValue>("OverbookedCapacityPenalty", "The multiplier for the constraint violation when added to the quality.", new DoubleValue(1000)));
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| 124 | Parameters.Add(new ValueParameter<DoubleArray>("Demands", "The demands vector describes the space requirements of the equipments.", new DoubleArray()));
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| 125 | Parameters.Add(new ValueParameter<DoubleArray>("Capacities", "The capacities vector describes the available space at the locations.", new DoubleArray()));
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| 126 | Parameters.Add(new OptionalValueParameter<IItem>("BestKnownSolution", "The best known solution (if available)", null));
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| 127 | Parameters.Add(new OptionalValueParameter<StringArray>("EquipmentNames", "Optional: A list of names that describes the equipments.", null, false));
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| 128 | Parameters.Add(new OptionalValueParameter<StringArray>("LocationNames", "Optional: A list of names that describes the locations.", null, false));
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| 129 |
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| 130 | WeightsParameter.ReactOnValueToStringChangedAndValueItemImageChanged = false;
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| 131 | DistancesParameter.ReactOnValueToStringChangedAndValueItemImageChanged = false;
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| 132 | InstallationCostsParameter.ReactOnValueToStringChangedAndValueItemImageChanged = false;
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| 133 |
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| 134 | Weights = new DoubleMatrix(5, 5);
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| 135 | Weights[0, 0] = Weights[1, 1] = Weights[2, 2] = Weights[3, 3] = Weights[4, 4] = 0;
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| 136 | Weights[0, 1] = Weights[1, 0] = Weights[0, 2] = Weights[2, 0] = Weights[0, 3] = Weights[3, 0] = Weights[0, 4] = Weights[4, 0] = 10;
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| 137 | Weights[1, 2] = Weights[2, 1] = Weights[1, 3] = Weights[3, 1] = Weights[1, 4] = Weights[4, 1] = 5;
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| 138 | Weights[2, 3] = Weights[3, 2] = Weights[2, 4] = Weights[4, 2] = 7.5;
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| 139 | Weights[3, 4] = Weights[4, 3] = 2.5;
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| 140 |
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| 141 | Distances = new DoubleMatrix(3, 3);
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| 142 | Distances[0, 0] = Distances[1, 1] = Distances[2, 2] = 0;
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| 143 | Distances[0, 1] = Distances[1, 0] = Distances[1, 2] = Distances[2, 1] = 1;
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| 144 | Distances[0, 2] = Distances[2, 0] = 2;
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| 145 |
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| 146 | InstallationCosts = new DoubleMatrix(5, 3);
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| 147 |
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| 148 | TransportationCosts = 1;
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| 149 |
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| 150 | Demands = new DoubleArray(5);
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| 151 | Demands[0] = 2; Demands[1] = 1; Demands[2] = 3; Demands[3] = 1; Demands[4] = 1;
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| 152 |
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| 153 | Capacities = new DoubleArray(3);
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| 154 | Capacities[0] = 4; Capacities[1] = 1; Capacities[2] = 4;
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| 155 |
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| 156 | SolutionCreator.AssignmentParameter.ActualName = "Assignment";
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| 157 | Parameterize();
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| 158 |
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| 159 | InitializeOperators();
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| 160 | AttachEventHandlers();
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| 161 | }
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| 162 |
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| 163 | public override IDeepCloneable Clone(Cloner cloner) {
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| 164 | return new GeneralizedQuadraticAssignmentProblem(this, cloner);
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| 165 | }
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| 166 |
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| 167 | #region Events
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| 168 | protected override void OnOperatorsChanged() {
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| 169 | base.OnOperatorsChanged();
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| 170 | Parameterize();
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| 171 | }
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| 172 | protected override void OnEvaluatorChanged() {
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| 173 | base.OnEvaluatorChanged();
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| 174 | Parameterize();
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| 175 | Evaluator.QualityParameter.ActualNameChanged += new System.EventHandler(Evaluator_QualityParameter_ActualNameChanged);
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| 176 | }
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| 177 | protected override void OnSolutionCreatorChanged() {
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| 178 | base.OnSolutionCreatorChanged();
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| 179 | Parameterize();
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| 180 | SolutionCreator.AssignmentParameter.ActualNameChanged += new EventHandler(SolutionCreator_IntegerVectorParameter_ActualNameChanged);
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| 181 | }
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| 182 |
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| 183 | private void Evaluator_QualityParameter_ActualNameChanged(object sender, EventArgs e) {
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| 184 | Parameterize();
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| 185 | }
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| 186 | private void SolutionCreator_IntegerVectorParameter_ActualNameChanged(object sender, EventArgs e) {
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| 187 | Parameterize();
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| 188 | }
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| 189 | #endregion
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| 190 |
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| 191 | #region Helpers
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| 192 | [StorableHook(HookType.AfterDeserialization)]
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| 193 | private void AfterDeserialization() {
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| 194 | AttachEventHandlers();
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| 195 | }
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| 196 |
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| 197 | private void AttachEventHandlers() {
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| 198 | Evaluator.QualityParameter.ActualNameChanged += new System.EventHandler(Evaluator_QualityParameter_ActualNameChanged);
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| 199 | SolutionCreator.AssignmentParameter.ActualNameChanged += new EventHandler(SolutionCreator_IntegerVectorParameter_ActualNameChanged);
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| 200 | }
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| 201 |
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| 202 | private void InitializeOperators() {
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| 203 | Operators.AddRange(ApplicationManager.Manager.GetInstances<IIntegerVectorOperator>());
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| 204 | Operators.AddRange(ApplicationManager.Manager.GetInstances<IGQAPOperator>());
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| 205 | Operators.RemoveAll(x => x is ISingleObjectiveMoveEvaluator);
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| 206 | Operators.AddRange(ApplicationManager.Manager.GetInstances<IGQAPMoveEvaluator>());
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| 207 | Operators.Add(new BestGQAPSolutionAnalyzer());
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| 208 | Parameterize();
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| 209 | }
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| 210 |
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| 211 | private void Parameterize() {
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| 212 | Evaluator.WeightsParameter.ActualName = WeightsParameter.Name;
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| 213 | Evaluator.DistancesParameter.ActualName = DistancesParameter.Name;
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| 214 | Evaluator.InstallationCostsParameter.ActualName = InstallationCostsParameter.Name;
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| 215 | Evaluator.TransportationCostsParameter.ActualName = TransportationCostsParameter.Name;
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| 216 | Evaluator.DemandsParameter.ActualName = DemandsParameter.Name;
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| 217 | Evaluator.CapacitiesParameter.ActualName = CapacitiesParameter.Name;
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| 218 | Evaluator.AssignmentParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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| 219 |
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| 220 | SolutionCreator.DemandsParameter.ActualName = DemandsParameter.Name;
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| 221 | SolutionCreator.CapacitiesParameter.ActualName = CapacitiesParameter.Name;
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| 222 |
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| 223 | foreach (var op in Operators.OfType<IEquipmentAwareGQAPOperator>()) {
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| 224 | op.DemandsParameter.ActualName = DemandsParameter.Name;
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| 225 | }
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| 226 | foreach (var op in Operators.OfType<IGQAPCrossover>()) {
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| 227 | op.ParentsParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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| 228 | op.ChildParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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| 229 | }
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| 230 | foreach (var op in Operators.OfType<IGQAPEvaluationOperator>()) {
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| 231 | op.AssignmentParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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| 232 | op.TransportationCostsParameter.ActualName = TransportationCostsParameter.Name;
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| 233 | op.OverbookedCapacityPenaltyParameter.ActualName = OverbookedCapacityPenaltyParameter.Name;
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| 234 | op.WeightsParameter.ActualName = WeightsParameter.Name;
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| 235 | op.DistancesParameter.ActualName = DistancesParameter.Name;
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| 236 | op.InstallationCostsParameter.ActualName = InstallationCostsParameter.Name;
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| 237 | op.DemandsParameter.ActualName = DemandsParameter.Name;
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| 238 | op.CapacitiesParameter.ActualName = CapacitiesParameter.Name;
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| 239 | }
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| 240 | foreach (var op in Operators.OfType<IGQAPLocalImprovementOperator>()) {
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| 241 | op.AssignmentParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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| 242 | op.QualityParameter.ActualName = Evaluator.QualityParameter.ActualName;
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| 243 | op.FlowDistanceQualityParameter.ActualName = Evaluator.FlowDistanceQualityParameter.ActualName;
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| 244 | op.InstallationQualityParameter.ActualName = Evaluator.InstallationQualityParameter.ActualName;
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| 245 | op.OverbookedCapacityParameter.ActualName = Evaluator.OverbookedCapacityParameter.ActualName;
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| 246 | op.TransportationCostsParameter.ActualName = TransportationCostsParameter.Name;
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| 247 | op.OverbookedCapacityPenaltyParameter.ActualName = OverbookedCapacityPenaltyParameter.Name;
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| 248 | op.WeightsParameter.ActualName = WeightsParameter.Name;
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| 249 | op.DistancesParameter.ActualName = DistancesParameter.Name;
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| 250 | op.InstallationCostsParameter.ActualName = InstallationCostsParameter.Name;
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| 251 | op.DemandsParameter.ActualName = DemandsParameter.Name;
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| 252 | op.CapacitiesParameter.ActualName = CapacitiesParameter.Name;
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| 253 | }
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| 254 | foreach (var op in Operators.OfType<IGQAPManipulator>()) {
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| 255 | op.IntegerVectorParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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| 256 | }
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| 257 | foreach (var op in Operators.OfType<IGQAPMerger>()) {
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| 258 | op.AssignmentParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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| 259 | op.QualityParameter.ActualName = Evaluator.QualityParameter.ActualName;
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| 260 | op.MaximizationParameter.ActualName = MaximizationParameter.Name;
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| 261 | }
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| 262 | foreach (var op in Operators.OfType<IGQAPMoveOperator>()) {
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| 263 | op.AssignmentParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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| 264 | }
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| 265 | foreach (var op in Operators.OfType<ILocationAwareGQAPOperator>()) {
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| 266 | op.CapacitiesParameter.ActualName = CapacitiesParameter.Name;
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| 267 | }
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| 268 |
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| 269 | foreach (var op in Operators.OfType<IIntegerVectorCrossover>()) {
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| 270 | op.ParentsParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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| 271 | op.ChildParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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| 272 | }
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| 273 | foreach (var op in Operators.OfType<IIntegerVectorManipulator>()) {
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| 274 | op.IntegerVectorParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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| 275 | }
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| 276 |
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| 277 | if (BestSolutionAnalyzer != null) {
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| 278 | BestSolutionAnalyzer.QualityParameter.ActualName = Evaluator.QualityParameter.ActualName;
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| 279 | BestSolutionAnalyzer.DistancesParameter.ActualName = DistancesParameter.Name;
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| 280 | BestSolutionAnalyzer.WeightsParameter.ActualName = WeightsParameter.Name;
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| 281 | BestSolutionAnalyzer.AssignmentParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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| 282 | BestSolutionAnalyzer.ResultsParameter.ActualName = "Results";
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| 283 | BestSolutionAnalyzer.BestKnownQualityParameter.ActualName = BestKnownQualityParameter.Name;
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| 284 | BestSolutionAnalyzer.MaximizationParameter.ActualName = MaximizationParameter.Name;
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| 285 | }
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| 286 | }
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| 287 | #endregion
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| 288 | }
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| 289 | }
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