| 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.Linq;
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| 23 | using HeuristicLab.Common;
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| 24 | using HeuristicLab.Core;
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| 25 | using HeuristicLab.Data;
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| 26 | using HeuristicLab.Encodings.IntegerVectorEncoding;
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| 27 | using HeuristicLab.Operators;
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| 28 | using HeuristicLab.Optimization;
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| 29 | using HeuristicLab.Parameters;
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| 30 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 31 |
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| 32 | namespace HeuristicLab.Problems.GeneralizedQuadraticAssignment {
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| 33 | /// <summary>
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| 34 | /// An operator for analyzing the best solution of Generalized Quadratic Assignment Problems.
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| 35 | /// </summary>
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| 36 | [Item("Best GeneralizedQAP Solution Analyzer", "An operator for analyzing the best solution of Generalized Quadratic Assignment Problems.")]
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| 37 | [StorableClass]
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| 38 | public sealed class BestGQAPSolutionAnalyzer : SingleSuccessorOperator, IAssignmentsAwareGQAPOperator,
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| 39 | IQualitiesAwareGQAPOperator, IDistancesAwareGQAPOperator, IWeightsAwareGQAPOperator, IInstallationCostsAwareGQAPOperator,
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| 40 | IDemandsAwareGQAPOperator, ICapacitiesAwareGQAPOperator, ITransportationCostsAwareGQAPOperator,
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| 41 | IExpectedRandomQualityAwareGQAPOperator, IEquipmentNamesAwareGQAPOperator, ILocationNamesAwareGQAPOperator,
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| 42 | IBestKnownQualityAwareGQAPOperator, IBestKnownSolutionAwareGQAPOperator,
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| 43 | IEvaluatorAwareGQAPOperator, IAnalyzer {
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| 44 |
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| 45 | public bool EnabledByDefault {
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| 46 | get { return true; }
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| 47 | }
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| 48 |
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| 49 | #region Parameter Properties
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| 50 | public IScopeTreeLookupParameter<IntegerVector> AssignmentParameter {
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| 51 | get { return (IScopeTreeLookupParameter<IntegerVector>)Parameters["Assignment"]; }
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| 52 | }
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| 53 | public ILookupParameter<BoolValue> MaximizationParameter {
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| 54 | get { return (ILookupParameter<BoolValue>)Parameters["Maximization"]; }
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| 55 | }
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| 56 | public IScopeTreeLookupParameter<DoubleValue> QualityParameter {
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| 57 | get { return (IScopeTreeLookupParameter<DoubleValue>)Parameters["Quality"]; }
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| 58 | }
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| 59 | public IScopeTreeLookupParameter<DoubleValue> FlowDistanceQualityParameter {
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| 60 | get { return (IScopeTreeLookupParameter<DoubleValue>)Parameters["FlowDistanceQuality"]; }
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| 61 | }
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| 62 | public IScopeTreeLookupParameter<DoubleValue> InstallationQualityParameter {
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| 63 | get { return (IScopeTreeLookupParameter<DoubleValue>)Parameters["InstallationQuality"]; }
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| 64 | }
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| 65 | public IScopeTreeLookupParameter<DoubleValue> OverbookedCapacityParameter {
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| 66 | get { return (IScopeTreeLookupParameter<DoubleValue>)Parameters["OverbookedCapacity"]; }
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| 67 | }
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| 68 | public ILookupParameter<DoubleMatrix> DistancesParameter {
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| 69 | get { return (ILookupParameter<DoubleMatrix>)Parameters["Distances"]; }
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| 70 | }
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| 71 | public ILookupParameter<DoubleMatrix> WeightsParameter {
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| 72 | get { return (ILookupParameter<DoubleMatrix>)Parameters["Weights"]; }
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| 73 | }
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| 74 | public ILookupParameter<DoubleMatrix> InstallationCostsParameter {
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| 75 | get { return (ILookupParameter<DoubleMatrix>)Parameters["InstallationCosts"]; }
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| 76 | }
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| 77 | public ILookupParameter<DoubleArray> DemandsParameter {
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| 78 | get { return (ILookupParameter<DoubleArray>)Parameters["Demands"]; }
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| 79 | }
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| 80 | public ILookupParameter<DoubleArray> CapacitiesParameter {
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| 81 | get { return (ILookupParameter<DoubleArray>)Parameters["Capacities"]; }
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| 82 | }
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| 83 | public IValueLookupParameter<DoubleValue> TransportationCostsParameter {
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| 84 | get { return (IValueLookupParameter<DoubleValue>)Parameters["TransportationCosts"]; }
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| 85 | }
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| 86 | public IValueLookupParameter<DoubleValue> ExpectedRandomQualityParameter {
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| 87 | get { return (IValueLookupParameter<DoubleValue>)Parameters["ExpectedRandomQuality"]; }
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| 88 | }
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| 89 | public ILookupParameter<StringArray> EquipmentNamesParameter {
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| 90 | get { return (ILookupParameter<StringArray>)Parameters["EquipmentNames"]; }
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| 91 | }
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| 92 | public ILookupParameter<StringArray> LocationNamesParameter {
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| 93 | get { return (ILookupParameter<StringArray>)Parameters["LocationNames"]; }
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| 94 | }
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| 95 | public ILookupParameter<DoubleValue> BestKnownQualityParameter {
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| 96 | get { return (ILookupParameter<DoubleValue>)Parameters["BestKnownQuality"]; }
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| 97 | }
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| 98 | public ILookupParameter<GQAPAssignment> BestKnownSolutionParameter {
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| 99 | get { return (ILookupParameter<GQAPAssignment>)Parameters["BestKnownSolution"]; }
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| 100 | }
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| 101 | public ILookupParameter<GQAPAssignment> BestSolutionParameter {
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| 102 | get { return (ILookupParameter<GQAPAssignment>)Parameters["BestSolution"]; }
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| 103 | }
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| 104 | public IValueLookupParameter<ResultCollection> ResultsParameter {
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| 105 | get { return (IValueLookupParameter<ResultCollection>)Parameters["Results"]; }
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| 106 | }
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| 107 | public IValueLookupParameter<IGQAPEvaluator> EvaluatorParameter {
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| 108 | get { return (IValueLookupParameter<IGQAPEvaluator>)Parameters["Evaluator"]; }
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| 109 | }
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| 110 | #endregion
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| 111 |
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| 112 | [StorableConstructor]
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| 113 | private BestGQAPSolutionAnalyzer(bool deserializing) : base(deserializing) { }
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| 114 | private BestGQAPSolutionAnalyzer(BestGQAPSolutionAnalyzer original, Cloner cloner) : base(original, cloner) { }
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| 115 | public override IDeepCloneable Clone(Cloner cloner) {
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| 116 | return new BestGQAPSolutionAnalyzer(this, cloner);
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| 117 | }
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| 118 | public BestGQAPSolutionAnalyzer()
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| 119 | : base() {
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| 120 | Parameters.Add(new LookupParameter<BoolValue>("Maximization", GeneralizedQuadraticAssignmentProblem.MaximizationDescription));
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| 121 | Parameters.Add(new LookupParameter<DoubleMatrix>("Distances", GeneralizedQuadraticAssignmentProblem.DistancesDescription));
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| 122 | Parameters.Add(new LookupParameter<DoubleMatrix>("Weights", GeneralizedQuadraticAssignmentProblem.WeightsDescription));
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| 123 | Parameters.Add(new LookupParameter<DoubleMatrix>("InstallationCosts", GeneralizedQuadraticAssignmentProblem.InstallationCostsDescription));
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| 124 | Parameters.Add(new LookupParameter<DoubleArray>("Demands", GeneralizedQuadraticAssignmentProblem.DemandsDescription));
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| 125 | Parameters.Add(new LookupParameter<DoubleArray>("Capacities", GeneralizedQuadraticAssignmentProblem.CapacitiesDescription));
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| 126 | Parameters.Add(new ValueLookupParameter<DoubleValue>("TransportationCosts", GeneralizedQuadraticAssignmentProblem.TransportationCostsDescription));
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| 127 | Parameters.Add(new ValueLookupParameter<DoubleValue>("ExpectedRandomQuality", GeneralizedQuadraticAssignmentProblem.ExpectedRandomQualityDescription));
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| 128 | Parameters.Add(new ScopeTreeLookupParameter<IntegerVector>("Assignment", GQAPSolutionCreator.AssignmentDescription));
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| 129 | Parameters.Add(new ScopeTreeLookupParameter<DoubleValue>("Quality", GQAPEvaluator.QualityDescription));
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| 130 | Parameters.Add(new ScopeTreeLookupParameter<DoubleValue>("FlowDistanceQuality", GQAPEvaluator.FlowDistanceQualityDescription));
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| 131 | Parameters.Add(new ScopeTreeLookupParameter<DoubleValue>("InstallationQuality", GQAPEvaluator.InstallationQualityDescription));
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| 132 | Parameters.Add(new ScopeTreeLookupParameter<DoubleValue>("OverbookedCapacity", GQAPEvaluator.OverbookedCapacityDescription));
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| 133 | Parameters.Add(new LookupParameter<StringArray>("EquipmentNames", GeneralizedQuadraticAssignmentProblem.EquipmentNamesDescription));
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| 134 | Parameters.Add(new LookupParameter<StringArray>("LocationNames", GeneralizedQuadraticAssignmentProblem.LocationNamesDescription));
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| 135 | Parameters.Add(new LookupParameter<DoubleValue>("BestKnownQuality", GeneralizedQuadraticAssignmentProblem.BestKnownQualityDescription));
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| 136 | Parameters.Add(new LookupParameter<GQAPAssignment>("BestKnownSolution", GeneralizedQuadraticAssignmentProblem.BestKnownSolutionDescription));
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| 137 | Parameters.Add(new LookupParameter<GQAPAssignment>("BestSolution", "The best GQAP solution found so far."));
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| 138 | Parameters.Add(new ValueLookupParameter<ResultCollection>("Results", "The result collection where the best GQAP solution should be stored."));
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| 139 | Parameters.Add(new ValueLookupParameter<IGQAPEvaluator>("Evaluator", "The evaluator that is used to evaluate GQAP solutions."));
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| 140 | }
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| 141 |
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| 142 | public override IOperation Apply() {
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| 143 | var evaluator = EvaluatorParameter.ActualValue;
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| 144 | var assignments = AssignmentParameter.ActualValue;
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| 145 | var qualities = QualityParameter.ActualValue;
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| 146 | var equipmentNames = EquipmentNamesParameter.ActualValue;
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| 147 | var locationNames = LocationNamesParameter.ActualValue;
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| 148 | var flowDistanceQualities = FlowDistanceQualityParameter.ActualValue;
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| 149 | var installationQualities = InstallationQualityParameter.ActualValue;
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| 150 | var overbookedCapacities = OverbookedCapacityParameter.ActualValue;
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| 151 | var distances = DistancesParameter.ActualValue;
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| 152 | var weights = WeightsParameter.ActualValue;
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| 153 | var installationCosts = InstallationCostsParameter.ActualValue;
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| 154 | var demands = DemandsParameter.ActualValue;
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| 155 | var capacities = CapacitiesParameter.ActualValue;
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| 156 | var transportationCosts = TransportationCostsParameter.ActualValue;
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| 157 | var expectedRandomQuality = ExpectedRandomQualityParameter.ActualValue;
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| 158 | var results = ResultsParameter.ActualValue;
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| 159 | var maximization = MaximizationParameter.ActualValue.Value;
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| 160 | var bestKnownQuality = BestKnownQualityParameter.ActualValue;
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| 161 |
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| 162 | int bestIndex;
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| 163 | var tmp = qualities.Select((x, index) => new { Index = index, Value = x.Value });
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| 164 | if (maximization) bestIndex = tmp.MaxItems(x => x.Value).First().Index;
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| 165 | else bestIndex = tmp.MinItems(x => x.Value).First().Index;
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| 166 |
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| 167 | if (bestKnownQuality == null || HasSolutionImproved(bestKnownQuality.Value, qualities[bestIndex].Value, maximization)) {
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| 168 | BestKnownQualityParameter.ActualValue = new DoubleValue(qualities[bestIndex].Value);
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| 169 | BestKnownSolutionParameter.ActualValue = new GQAPAssignment((IntegerVector)assignments[bestIndex].Clone(), (DoubleValue)qualities[bestIndex].Clone(), flowDistanceQualities[bestIndex], installationQualities[bestIndex], overbookedCapacities[bestIndex], equipmentNames, locationNames, distances, weights, installationCosts, demands, capacities, transportationCosts, expectedRandomQuality, evaluator);
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| 170 | }
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| 171 |
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| 172 | var assignment = BestSolutionParameter.ActualValue;
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| 173 | if (assignment == null) {
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| 174 | assignment = new GQAPAssignment((IntegerVector)assignments[bestIndex].Clone(), (DoubleValue)qualities[bestIndex].Clone(), flowDistanceQualities[bestIndex], installationQualities[bestIndex], overbookedCapacities[bestIndex], equipmentNames, locationNames, distances, weights, installationCosts, demands, capacities, transportationCosts, expectedRandomQuality, evaluator);
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| 175 | assignment.Distances = distances;
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| 176 | BestSolutionParameter.ActualValue = assignment;
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| 177 | } else {
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| 178 | if (HasSolutionImproved(assignment.Quality.Value, qualities[bestIndex].Value, maximization)) {
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| 179 | assignment.Assignment = (IntegerVector)assignments[bestIndex].Clone();
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| 180 | assignment.Quality = (DoubleValue)qualities[bestIndex].Clone();
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| 181 | assignment.FlowDistanceQuality = (DoubleValue)flowDistanceQualities[bestIndex].Clone();
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| 182 | assignment.InstallationQuality = (DoubleValue)installationQualities[bestIndex].Clone();
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| 183 | assignment.OverbookedCapacity = (DoubleValue)overbookedCapacities[bestIndex].Clone();
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| 184 | assignment.EquipmentNames = equipmentNames;
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| 185 | assignment.LocationNames = locationNames;
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| 186 | assignment.Distances = distances;
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| 187 | assignment.Weights = weights;
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| 188 | assignment.InstallationCosts = installationCosts;
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| 189 | assignment.Demands = demands;
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| 190 | assignment.Capacities = capacities;
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| 191 | assignment.TransportationCosts = transportationCosts;
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| 192 | assignment.ExpectedRandomQuality = expectedRandomQuality;
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| 193 | assignment.Evaluator = evaluator;
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| 194 | }
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| 195 | }
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| 196 | if (!results.ContainsKey("Best GQAP Assignment"))
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| 197 | results.Add(new Result("Best GQAP Assignment", assignment));
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| 198 |
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| 199 | return base.Apply();
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| 200 | }
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| 201 |
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| 202 | private static bool HasSolutionImproved(double oldQuality, double quality, bool maximization) {
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| 203 | return maximization && oldQuality < quality || !maximization && oldQuality > quality;
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| 204 | }
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| 205 | }
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| 206 | }
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