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 |
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40 | public override Image ItemImage {
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41 | get { return HeuristicLab.Common.Resources.VSImageLibrary.Type; }
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42 | }
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43 |
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44 | public string Filename { get; set; }
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45 |
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46 | #region Parameter Descriptions
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47 | public static readonly string MaximizationDescription = "False if the fitness function should be minimized (default) or otherwise True if it should be maximized.";
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48 | public static readonly string WeightsDescription = "The weights matrix describes the flows between the equipments.";
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49 | public static readonly string DistancesDescription = "The distances matrix describes the distances between the locations at which the equipment can be installed.";
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50 | public static readonly string InstallationCostsDescription = "The installation costs matrix describes the installation costs of installing equipment i at location j";
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51 | public static readonly string DemandsDescription = "The demands vector describes the space requirements of the equipments.";
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52 | public static readonly string CapacitiesDescription = "The capacities vector describes the available space at the locations.";
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53 | public static readonly string TransportationCostsDescription = "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.";
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54 | public static readonly string OverbookedCapacityPenaltyDescription = "The multiplier for the constraint violation when added to the quality.";
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55 | public static readonly string BestKnownSolutionDescription = "The best known solution (if available)";
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56 | public static readonly string EquipmentNamesDescription = "Optional: A list of names that describes the equipments.";
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57 | public static readonly string LocationNamesDescription = "Optional: A list of names that describes the locations.";
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58 | #endregion
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59 |
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60 | #region Parameter Properties
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61 | public ValueParameter<DoubleMatrix> WeightsParameter {
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62 | get { return (ValueParameter<DoubleMatrix>)Parameters["Weights"]; }
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63 | }
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64 | public ValueParameter<DoubleMatrix> DistancesParameter {
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65 | get { return (ValueParameter<DoubleMatrix>)Parameters["Distances"]; }
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66 | }
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67 | public ValueParameter<DoubleMatrix> InstallationCostsParameter {
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68 | get { return (ValueParameter<DoubleMatrix>)Parameters["InstallationCosts"]; }
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69 | }
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70 | public ValueParameter<DoubleArray> DemandsParameter {
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71 | get { return (ValueParameter<DoubleArray>)Parameters["Demands"]; }
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72 | }
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73 | public ValueParameter<DoubleArray> CapacitiesParameter {
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74 | get { return (ValueParameter<DoubleArray>)Parameters["Capacities"]; }
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75 | }
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76 | public FixedValueParameter<DoubleValue> TransportationCostsParameter {
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77 | get { return (FixedValueParameter<DoubleValue>)Parameters["TransportationCosts"]; }
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78 | }
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79 | public FixedValueParameter<DoubleValue> OverbookedCapacityPenaltyParameter {
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80 | get { return (FixedValueParameter<DoubleValue>)Parameters["OverbookedCapacityPenalty"]; }
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81 | }
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82 | public OptionalValueParameter<IItem> BestKnownSolutionParameter {
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83 | get { return (OptionalValueParameter<IItem>)Parameters["BestKnownSolution"]; }
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84 | }
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85 | public OptionalValueParameter<StringArray> EquipmentNamesParameter {
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86 | get { return (OptionalValueParameter<StringArray>)Parameters["EquipmentNames"]; }
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87 | }
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88 | public OptionalValueParameter<StringArray> LocationNamesParameter {
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89 | get { return (OptionalValueParameter<StringArray>)Parameters["LocationNames"]; }
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90 | }
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91 | #endregion
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92 |
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93 | #region Properties
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94 | public DoubleMatrix Weights {
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95 | get { return WeightsParameter.Value; }
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96 | set { WeightsParameter.Value = value; }
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97 | }
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98 | public DoubleMatrix Distances {
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99 | get { return DistancesParameter.Value; }
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100 | set { DistancesParameter.Value = value; }
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101 | }
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102 | public DoubleMatrix InstallationCosts {
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103 | get { return InstallationCostsParameter.Value; }
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104 | set { InstallationCostsParameter.Value = value; }
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105 | }
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106 | public DoubleArray Demands {
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107 | get { return DemandsParameter.Value; }
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108 | set { DemandsParameter.Value = value; }
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109 | }
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110 | public DoubleArray Capacities {
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111 | get { return CapacitiesParameter.Value; }
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112 | set { CapacitiesParameter.Value = value; }
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113 | }
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114 | public double TransportationCosts {
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115 | get { return TransportationCostsParameter.Value.Value; }
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116 | set { TransportationCostsParameter.Value.Value = value; }
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117 | }
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118 | public double OverbookedCapacityPenalty {
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119 | get { return TransportationCostsParameter.Value.Value; }
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120 | set { TransportationCostsParameter.Value.Value = value; }
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121 | }
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122 | public StringArray EquipmentNames {
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123 | get { return EquipmentNamesParameter.Value; }
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124 | set { EquipmentNamesParameter.Value = value; }
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125 | }
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126 | public StringArray LocationNames {
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127 | get { return LocationNamesParameter.Value; }
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128 | set { LocationNamesParameter.Value = value; }
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129 | }
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130 | #endregion
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131 |
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132 | public BestGQAPSolutionAnalyzer BestSolutionAnalyzer {
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133 | get { return Operators.OfType<BestGQAPSolutionAnalyzer>().FirstOrDefault(); }
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134 | }
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135 | public GQAPSolutionArchiveAnalyzer SolutionArchiveAnalyzer {
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136 | get { return Operators.OfType<GQAPSolutionArchiveAnalyzer>().FirstOrDefault(); }
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137 | }
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138 |
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139 | [StorableConstructor]
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140 | private GeneralizedQuadraticAssignmentProblem(bool deserializing) : base(deserializing) { }
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141 | private GeneralizedQuadraticAssignmentProblem(GeneralizedQuadraticAssignmentProblem original, Cloner cloner)
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142 | : base(original, cloner) {
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143 | AttachEventHandlers();
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144 | }
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145 | public GeneralizedQuadraticAssignmentProblem()
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146 | : base(new GQAPEvaluator(), new RandomSolutionCreator()) {
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147 | Parameters.Add(new ValueParameter<DoubleMatrix>("Weights", WeightsDescription, new DoubleMatrix()));
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148 | Parameters.Add(new ValueParameter<DoubleMatrix>("Distances", DistancesDescription, new DoubleMatrix()));
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149 | Parameters.Add(new ValueParameter<DoubleMatrix>("InstallationCosts", InstallationCostsDescription, new DoubleMatrix()));
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150 | Parameters.Add(new FixedValueParameter<DoubleValue>("TransportationCosts", TransportationCostsDescription, new DoubleValue(1)));
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151 | Parameters.Add(new FixedValueParameter<DoubleValue>("OverbookedCapacityPenalty", OverbookedCapacityPenaltyDescription, new DoubleValue(1000)));
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152 | Parameters.Add(new ValueParameter<DoubleArray>("Demands", DemandsDescription, new DoubleArray()));
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153 | Parameters.Add(new ValueParameter<DoubleArray>("Capacities", CapacitiesDescription, new DoubleArray()));
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154 | Parameters.Add(new OptionalValueParameter<IItem>("BestKnownSolution", BestKnownSolutionDescription, null));
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155 | Parameters.Add(new OptionalValueParameter<StringArray>("EquipmentNames", EquipmentNamesDescription, null, false));
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156 | Parameters.Add(new OptionalValueParameter<StringArray>("LocationNames", LocationNamesDescription, null, false));
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157 |
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158 | WeightsParameter.ReactOnValueToStringChangedAndValueItemImageChanged = false;
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159 | DistancesParameter.ReactOnValueToStringChangedAndValueItemImageChanged = false;
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160 | InstallationCostsParameter.ReactOnValueToStringChangedAndValueItemImageChanged = false;
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161 |
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162 | Weights = new DoubleMatrix(5, 5);
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163 | Weights[0, 0] = Weights[1, 1] = Weights[2, 2] = Weights[3, 3] = Weights[4, 4] = 0;
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164 | 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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165 | Weights[1, 2] = Weights[2, 1] = Weights[1, 3] = Weights[3, 1] = Weights[1, 4] = Weights[4, 1] = 5;
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166 | Weights[2, 3] = Weights[3, 2] = Weights[2, 4] = Weights[4, 2] = 7.5;
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167 | Weights[3, 4] = Weights[4, 3] = 2.5;
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168 |
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169 | Distances = new DoubleMatrix(3, 3);
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170 | Distances[0, 0] = Distances[1, 1] = Distances[2, 2] = 0;
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171 | Distances[0, 1] = Distances[1, 0] = Distances[1, 2] = Distances[2, 1] = 1;
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172 | Distances[0, 2] = Distances[2, 0] = 2;
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173 |
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174 | InstallationCosts = new DoubleMatrix(5, 3);
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175 |
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176 | TransportationCosts = 1;
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177 |
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178 | Demands = new DoubleArray(5);
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179 | Demands[0] = 2; Demands[1] = 1; Demands[2] = 3; Demands[3] = 1; Demands[4] = 1;
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180 |
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181 | Capacities = new DoubleArray(3);
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182 | Capacities[0] = 4; Capacities[1] = 1; Capacities[2] = 4;
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183 |
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184 | SolutionCreator.AssignmentParameter.ActualName = "Assignment";
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185 |
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186 | InitializeOperators();
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187 | AttachEventHandlers();
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188 | }
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189 |
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190 | public override IDeepCloneable Clone(Cloner cloner) {
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191 | return new GeneralizedQuadraticAssignmentProblem(this, cloner);
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192 | }
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193 |
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194 | #region Events
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195 | protected override void OnOperatorsChanged() {
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196 | base.OnOperatorsChanged();
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197 | Parameterize();
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198 | }
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199 | protected override void OnEvaluatorChanged() {
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200 | base.OnEvaluatorChanged();
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201 | Parameterize();
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202 | Evaluator.QualityParameter.ActualNameChanged += new System.EventHandler(Evaluator_QualityParameter_ActualNameChanged);
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203 | }
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204 | protected override void OnSolutionCreatorChanged() {
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205 | base.OnSolutionCreatorChanged();
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206 | Parameterize();
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207 | SolutionCreator.AssignmentParameter.ActualNameChanged += new EventHandler(SolutionCreator_IntegerVectorParameter_ActualNameChanged);
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208 | }
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209 |
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210 | private void Evaluator_QualityParameter_ActualNameChanged(object sender, EventArgs e) {
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211 | Parameterize();
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212 | }
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213 | private void SolutionCreator_IntegerVectorParameter_ActualNameChanged(object sender, EventArgs e) {
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214 | Parameterize();
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215 | }
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216 | #endregion
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217 |
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218 | #region Helpers
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219 | [StorableHook(HookType.AfterDeserialization)]
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220 | private void AfterDeserialization() {
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221 | AttachEventHandlers();
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222 | }
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223 |
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224 | private void AttachEventHandlers() {
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225 | Evaluator.QualityParameter.ActualNameChanged += new System.EventHandler(Evaluator_QualityParameter_ActualNameChanged);
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226 | SolutionCreator.AssignmentParameter.ActualNameChanged += new EventHandler(SolutionCreator_IntegerVectorParameter_ActualNameChanged);
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227 | }
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228 |
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229 | private void InitializeOperators() {
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230 | Operators.Add(new BestGQAPSolutionAnalyzer());
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231 | Operators.Add(new GQAPSolutionArchiveAnalyzer());
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232 | Operators.AddRange(ApplicationManager.Manager.GetInstances<IGQAPOperator>());
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233 | Operators.AddRange(ApplicationManager.Manager.GetInstances<IIntegerVectorOperator>());
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234 | Operators.RemoveAll(x => x is ISingleObjectiveMoveEvaluator);
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235 | Operators.AddRange(ApplicationManager.Manager.GetInstances<IGQAPMoveEvaluator>());
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236 | Parameterize();
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237 | }
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238 |
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239 | private void Parameterize() {
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240 |
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241 | var operators = Operators.Union(new IOperator[] { SolutionCreator, Evaluator }).ToArray();
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242 |
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243 | foreach (var op in operators.OfType<IAssignmentAwareGQAPOperator>()) {
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244 | op.AssignmentParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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245 | }
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246 | foreach (var op in operators.OfType<IAssignmentsAwareGQAPOperator>()) {
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247 | op.AssignmentParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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248 | }
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249 | foreach (var op in operators.OfType<IBestKnownQualityAwareGQAPOperator>()) {
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250 | op.BestKnownQualityParameter.ActualName = BestKnownQualityParameter.Name;
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251 | }
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252 | foreach (var op in operators.OfType<IBestKnownSolutionAwareGQAPOperator>()) {
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253 | op.BestKnownSolutionParameter.ActualName = BestKnownSolutionParameter.Name;
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254 | }
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255 | foreach (var op in operators.OfType<ICapacitiesAwareGQAPOperator>()) {
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256 | op.CapacitiesParameter.ActualName = CapacitiesParameter.Name;
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257 | }
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258 | foreach (var op in operators.OfType<IDemandsAwareGQAPOperator>()) {
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259 | op.DemandsParameter.ActualName = DemandsParameter.Name;
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260 | }
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261 | foreach (var op in operators.OfType<IDistancesAwareGQAPOperator>()) {
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262 | op.DistancesParameter.ActualName = DistancesParameter.Name;
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263 | }
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264 | foreach (var op in operators.OfType<IEquipmentNamesAwareGQAPOperator>()) {
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265 | op.EquipmentNamesParameter.ActualName = EquipmentNamesParameter.Name;
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266 | }
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267 | foreach (var op in operators.OfType<IGQAPCrossover>()) {
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268 | op.ParentsParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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269 | op.ChildParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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270 | }
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271 | foreach (var op in operators.OfType<IInstallationCostsAwareGQAPOperator>()) {
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272 | op.InstallationCostsParameter.ActualName = InstallationCostsParameter.Name;
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273 | }
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274 | foreach (var op in operators.OfType<ILocationNamesAwareGQAPOperator>()) {
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275 | op.LocationNamesParameter.ActualName = LocationNamesParameter.Name;
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276 | }
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277 | var moveEvaluator = operators.OfType<IGQAPMoveEvaluator>().FirstOrDefault();
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278 | foreach (var op in operators.OfType<IGQAPMoveEvaluator>()) { // synchronize all move evaluators
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279 | if (moveEvaluator != null) {
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280 | op.MoveQualityParameter.ActualName = moveEvaluator.MoveQualityParameter.ActualName;
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281 | op.MoveFlowDistanceQualityParameter.ActualName = moveEvaluator.MoveFlowDistanceQualityParameter.ActualName;
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282 | op.MoveInstallationQualityParameter.ActualName = moveEvaluator.MoveInstallationQualityParameter.ActualName;
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283 | op.MoveOverbookedCapacityParameter.ActualName = moveEvaluator.MoveOverbookedCapacityParameter.ActualName;
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284 | }
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285 | }
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286 | foreach (var op in operators.OfType<IMoveQualityAwareGQAPOperator>()) {
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287 | if (moveEvaluator != null) {
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288 | op.MoveQualityParameter.ActualName = moveEvaluator.MoveQualityParameter.ActualName;
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289 | op.MoveFlowDistanceQualityParameter.ActualName = moveEvaluator.MoveFlowDistanceQualityParameter.ActualName;
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290 | op.MoveInstallationQualityParameter.ActualName = moveEvaluator.MoveInstallationQualityParameter.ActualName;
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291 | op.MoveOverbookedCapacityParameter.ActualName = moveEvaluator.MoveOverbookedCapacityParameter.ActualName;
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292 | }
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293 | op.MaximizationParameter.ActualName = MaximizationParameter.Name;
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294 | }
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295 | foreach (var op in operators.OfType<IOverbookedCapacityPenaltyAwareGQAPOperator>()) {
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296 | op.OverbookedCapacityPenaltyParameter.ActualName = OverbookedCapacityPenaltyParameter.Name;
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297 | }
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298 | foreach (var op in operators.OfType<IQualitiesAwareGQAPOperator>()) {
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299 | op.QualityParameter.ActualName = Evaluator.QualityParameter.ActualName;
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300 | op.FlowDistanceQualityParameter.ActualName = Evaluator.FlowDistanceQualityParameter.ActualName;
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301 | op.InstallationQualityParameter.ActualName = Evaluator.InstallationQualityParameter.ActualName;
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302 | op.OverbookedCapacityParameter.ActualName = Evaluator.OverbookedCapacityParameter.ActualName;
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303 | op.MaximizationParameter.ActualName = MaximizationParameter.Name;
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304 | }
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305 | foreach (var op in operators.OfType<IQualityAwareGQAPOperator>()) {
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306 | op.QualityParameter.ActualName = Evaluator.QualityParameter.ActualName;
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307 | op.FlowDistanceQualityParameter.ActualName = Evaluator.FlowDistanceQualityParameter.ActualName;
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308 | op.InstallationQualityParameter.ActualName = Evaluator.InstallationQualityParameter.ActualName;
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309 | op.OverbookedCapacityParameter.ActualName = Evaluator.OverbookedCapacityParameter.ActualName;
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310 | op.MaximizationParameter.ActualName = MaximizationParameter.Name;
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311 | }
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312 | foreach (var op in operators.OfType<ITransportationCostsAwareGQAPOperator>()) {
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313 | op.TransportationCostsParameter.ActualName = TransportationCostsParameter.Name;
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314 | }
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315 | foreach (var op in operators.OfType<IWeightsAwareGQAPOperator>()) {
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316 | op.WeightsParameter.ActualName = WeightsParameter.Name;
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317 | }
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318 |
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319 | foreach (var op in operators.OfType<IIntegerVectorCrossover>()) {
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320 | op.ParentsParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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321 | op.ChildParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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322 | }
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323 | foreach (var op in operators.OfType<IIntegerVectorManipulator>()) {
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324 | op.IntegerVectorParameter.ActualName = SolutionCreator.AssignmentParameter.ActualName;
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325 | }
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326 | }
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327 | #endregion
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328 | }
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329 | }
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