| 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 HeuristicLab.Common;
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| 23 | using HeuristicLab.Core;
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| 24 | using HeuristicLab.Data;
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| 25 | using HeuristicLab.Encodings.IntegerVectorEncoding;
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| 26 | using HeuristicLab.Operators;
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| 27 | using HeuristicLab.Optimization;
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| 28 | using HeuristicLab.Parameters;
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| 29 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 30 |
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| 31 | namespace HeuristicLab.Problems.GeneralizedQuadraticAssignment {
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| 32 | [Item("N-Move Evaluator", "Evaluates an N-Move.")]
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| 33 | [StorableClass]
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| 34 | public class GQAPNMoveEvaluator : SingleSuccessorOperator, IGQAPNMoveEvaluator, IAssignmentAwareGQAPOperator,
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| 35 | IQualityAwareGQAPOperator, ITransportationCostsAwareGQAPOperator,
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| 36 | IExpectedRandomQualityAwareGQAPOperator, IWeightsAwareGQAPOperator, IDistancesAwareGQAPOperator,
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| 37 | IInstallationCostsAwareGQAPOperator, IDemandsAwareGQAPOperator, ICapacitiesAwareGQAPOperator,
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| 38 | IEvaluatorAwareGQAPOperator {
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| 39 |
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| 40 | #region Parameter Descriptions
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| 41 | public static readonly string MoveQualityDescription = "The quality of the move if it would be applied.";
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| 42 | public static readonly string MoveFlowDistanceQualityDescription = "The quality of the move regarding the flow-distance criteria.";
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| 43 | public static readonly string MoveInstallationQualityDescription = "The quality of the move regarding the installation costs.";
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| 44 | public static readonly string MoveOverbookedCapacityDescription = "The sum of the overbooked capacities of the move relative to the capacity of each location.";
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| 45 | #endregion
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| 46 |
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| 47 | #region Parameter Properties
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| 48 | ILookupParameter<BoolValue> IQualityAwareGQAPOperator.MaximizationParameter {
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| 49 | get { return MaximizationParameter; }
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| 50 | }
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| 51 | ILookupParameter<BoolValue> IGQAPMoveEvaluator.MaximizationParameter {
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| 52 | get { return MaximizationParameter; }
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| 53 | }
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| 54 | public ILookupParameter<BoolValue> MaximizationParameter {
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| 55 | get { return (ILookupParameter<BoolValue>)Parameters["Maximization"]; }
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| 56 | }
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| 57 | public ILookupParameter<DoubleValue> MoveQualityParameter {
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| 58 | get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
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| 59 | }
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| 60 | public ILookupParameter<DoubleValue> MoveFlowDistanceQualityParameter {
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| 61 | get { return (ILookupParameter<DoubleValue>)Parameters["MoveFlowDistanceQuality"]; }
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| 62 | }
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| 63 | public ILookupParameter<DoubleValue> MoveInstallationQualityParameter {
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| 64 | get { return (ILookupParameter<DoubleValue>)Parameters["MoveInstallationQuality"]; }
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| 65 | }
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| 66 | public ILookupParameter<DoubleValue> MoveOverbookedCapacityParameter {
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| 67 | get { return (ILookupParameter<DoubleValue>)Parameters["MoveOverbookedCapacity"]; }
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| 68 | }
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| 69 | public ILookupParameter<NMove> MoveParameter {
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| 70 | get { return (ILookupParameter<NMove>)Parameters["Move"]; }
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| 71 | }
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| 72 | public ILookupParameter<IntegerVector> AssignmentParameter {
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| 73 | get { return (ILookupParameter<IntegerVector>)Parameters["Assignment"]; }
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| 74 | }
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| 75 | ILookupParameter<DoubleValue> ISingleObjectiveMoveEvaluator.QualityParameter {
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| 76 | get { return QualityParameter; }
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| 77 | }
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| 78 | ILookupParameter<DoubleValue> IQualityAwareGQAPOperator.QualityParameter {
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| 79 | get { return QualityParameter; }
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| 80 | }
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| 81 | public ILookupParameter<DoubleValue> QualityParameter {
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| 82 | get { return (ILookupParameter<DoubleValue>)Parameters["Quality"]; }
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| 83 | }
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| 84 | public ILookupParameter<DoubleValue> FlowDistanceQualityParameter {
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| 85 | get { return (ILookupParameter<DoubleValue>)Parameters["FlowDistanceQuality"]; }
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| 86 | }
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| 87 | public ILookupParameter<DoubleValue> InstallationQualityParameter {
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| 88 | get { return (ILookupParameter<DoubleValue>)Parameters["InstallationQuality"]; }
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| 89 | }
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| 90 | public ILookupParameter<DoubleValue> OverbookedCapacityParameter {
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| 91 | get { return (ILookupParameter<DoubleValue>)Parameters["OverbookedCapacity"]; }
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| 92 | }
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| 93 | public IValueLookupParameter<DoubleValue> TransportationCostsParameter {
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| 94 | get { return (IValueLookupParameter<DoubleValue>)Parameters["TransportationCosts"]; }
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| 95 | }
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| 96 | public IValueLookupParameter<DoubleValue> ExpectedRandomQualityParameter {
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| 97 | get { return (IValueLookupParameter<DoubleValue>)Parameters["ExpectedRandomQuality"]; }
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| 98 | }
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| 99 | public ILookupParameter<DoubleMatrix> WeightsParameter {
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| 100 | get { return (ILookupParameter<DoubleMatrix>)Parameters["Weights"]; }
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| 101 | }
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| 102 | public ILookupParameter<DoubleMatrix> DistancesParameter {
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| 103 | get { return (ILookupParameter<DoubleMatrix>)Parameters["Distances"]; }
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| 104 | }
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| 105 | public ILookupParameter<DoubleMatrix> InstallationCostsParameter {
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| 106 | get { return (ILookupParameter<DoubleMatrix>)Parameters["InstallationCosts"]; }
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| 107 | }
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| 108 | public ILookupParameter<DoubleArray> DemandsParameter {
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| 109 | get { return (ILookupParameter<DoubleArray>)Parameters["Demands"]; }
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| 110 | }
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| 111 | public ILookupParameter<DoubleArray> CapacitiesParameter {
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| 112 | get { return (ILookupParameter<DoubleArray>)Parameters["Capacities"]; }
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| 113 | }
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| 114 | public IValueLookupParameter<IGQAPEvaluator> EvaluatorParameter {
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| 115 | get { return (IValueLookupParameter<IGQAPEvaluator>)Parameters["Evaluator"]; }
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| 116 | }
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| 117 | #endregion
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| 118 |
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| 119 | [StorableConstructor]
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| 120 | protected GQAPNMoveEvaluator(bool deserializing) : base(deserializing) { }
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| 121 | protected GQAPNMoveEvaluator(GQAPNMoveEvaluator original, Cloner cloner) : base(original, cloner) { }
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| 122 | public GQAPNMoveEvaluator()
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| 123 | : base() {
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| 124 | Parameters.Add(new LookupParameter<IntegerVector>("Assignment", GQAPSolutionCreator.AssignmentDescription));
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| 125 | Parameters.Add(new LookupParameter<NMove>("Move", GQAPNMoveGenerator.MoveDescription));
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| 126 | Parameters.Add(new LookupParameter<BoolValue>("Maximization", GeneralizedQuadraticAssignmentProblem.MaximizationDescription));
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| 127 | Parameters.Add(new LookupParameter<DoubleValue>("Quality", GQAPEvaluator.QualityDescription));
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| 128 | Parameters.Add(new LookupParameter<DoubleValue>("FlowDistanceQuality", GQAPEvaluator.FlowDistanceQualityDescription));
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| 129 | Parameters.Add(new LookupParameter<DoubleValue>("InstallationQuality", GQAPEvaluator.InstallationQualityDescription));
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| 130 | Parameters.Add(new LookupParameter<DoubleValue>("OverbookedCapacity", GQAPEvaluator.OverbookedCapacityDescription));
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| 131 | Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", MoveQualityDescription));
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| 132 | Parameters.Add(new LookupParameter<DoubleValue>("MoveFlowDistanceQuality", MoveFlowDistanceQualityDescription));
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| 133 | Parameters.Add(new LookupParameter<DoubleValue>("MoveInstallationQuality", MoveInstallationQualityDescription));
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| 134 | Parameters.Add(new LookupParameter<DoubleValue>("MoveOverbookedCapacity", MoveOverbookedCapacityDescription));
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| 135 | Parameters.Add(new ValueLookupParameter<DoubleValue>("ExpectedRandomQuality", GeneralizedQuadraticAssignmentProblem.ExpectedRandomQualityDescription));
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| 136 | Parameters.Add(new ValueLookupParameter<DoubleValue>("TransportationCosts", GeneralizedQuadraticAssignmentProblem.TransportationCostsDescription));
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| 137 | Parameters.Add(new LookupParameter<DoubleMatrix>("Weights", GeneralizedQuadraticAssignmentProblem.WeightsDescription));
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| 138 | Parameters.Add(new LookupParameter<DoubleMatrix>("Distances", GeneralizedQuadraticAssignmentProblem.DistancesDescription));
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| 139 | Parameters.Add(new LookupParameter<DoubleMatrix>("InstallationCosts", GeneralizedQuadraticAssignmentProblem.InstallationCostsDescription));
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| 140 | Parameters.Add(new LookupParameter<DoubleArray>("Demands", GeneralizedQuadraticAssignmentProblem.DemandsDescription));
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| 141 | Parameters.Add(new LookupParameter<DoubleArray>("Capacities", GeneralizedQuadraticAssignmentProblem.CapacitiesDescription));
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| 142 | Parameters.Add(new ValueLookupParameter<IGQAPEvaluator>("Evaluator", "The evaluator that is used to evaluate GQAP solutions."));
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| 143 | }
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| 144 |
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| 145 | public override IDeepCloneable Clone(Cloner cloner) {
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| 146 | return new GQAPNMoveEvaluator(this, cloner);
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| 147 | }
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| 148 |
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| 149 | public static double Evaluate(NMove move, IntegerVector assignment, DoubleMatrix weights, DoubleMatrix distances, DoubleMatrix installationCosts,
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| 150 | DoubleArray demands, DoubleArray capacities, double transportationCosts, double expectedRandomQuality, IGQAPEvaluator evaluator) {
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| 151 | double moveFlowDistanceQuality, moveInstallationQuality, moveOverbookedCapacity;
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| 152 | Evaluate(move, assignment, weights, distances, installationCosts, demands, capacities, evaluator,
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| 153 | out moveFlowDistanceQuality, out moveInstallationQuality, out moveOverbookedCapacity);
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| 154 | return evaluator.GetFitness(moveFlowDistanceQuality, moveInstallationQuality, moveOverbookedCapacity,
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| 155 | transportationCosts, expectedRandomQuality);
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| 156 | }
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| 157 |
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| 158 | public static void Evaluate(NMove move, IntegerVector assignment, DoubleMatrix weights, DoubleMatrix distances, DoubleMatrix installationCosts,
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| 159 | DoubleArray demands, DoubleArray capacities, IGQAPEvaluator evaluator, out double moveFlowDistanceQuality, out double moveInstallationQuality, out double moveOverbookedCapacity) {
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| 160 | moveFlowDistanceQuality = moveInstallationQuality = moveOverbookedCapacity = 0.0;
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| 161 | int moves = move.N;
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| 162 | var slack = (DoubleArray)capacities.Clone();
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| 163 | var oldSlack = (DoubleArray)slack.Clone();
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| 164 | bool first = true;
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| 165 | foreach (var kvp in move.NewAssignments) {
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| 166 | int equip = kvp.Key;
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| 167 | int newLoc = kvp.Value;
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| 168 | moveInstallationQuality -= installationCosts[equip, assignment[equip]];
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| 169 | moveInstallationQuality += installationCosts[equip, newLoc];
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| 170 | for (int j = 0; j < assignment.Length; j++) {
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| 171 | if (!move.NewAssignments.ContainsKey(j)) {
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| 172 | moveFlowDistanceQuality += weights[equip, j] * distances[newLoc, assignment[j]];
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| 173 | moveFlowDistanceQuality -= weights[equip, j] * distances[assignment[equip], assignment[j]];
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| 174 | moveFlowDistanceQuality += weights[j, equip] * distances[assignment[j], newLoc];
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| 175 | moveFlowDistanceQuality -= weights[j, equip] * distances[assignment[j], assignment[equip]];
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| 176 | if (first) { // only once for each untouched equipment deduct the demand from the capacity
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| 177 | slack[assignment[j]] -= demands[j];
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| 178 | oldSlack[assignment[j]] -= demands[j];
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| 179 | }
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| 180 | } else {
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| 181 | moveFlowDistanceQuality += weights[equip, j] * distances[newLoc, move.NewAssignments[j]];
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| 182 | moveFlowDistanceQuality -= weights[equip, j] * distances[assignment[equip], assignment[j]];
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| 183 | }
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| 184 | }
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| 185 | first = false;
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| 186 | slack[newLoc] -= demands[equip];
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| 187 | oldSlack[assignment[equip]] -= demands[equip];
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| 188 | }
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| 189 |
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| 190 | moveOverbookedCapacity = evaluator.EvaluateOverbooking(slack, capacities) - evaluator.EvaluateOverbooking(oldSlack, capacities);
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| 191 | }
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| 192 |
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| 193 | public override IOperation Apply() {
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| 194 | var evaluator = EvaluatorParameter.ActualValue;
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| 195 | double moveFlowDistanceQuality, moveInstallationQuality, moveOverbookedCapacity;
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| 196 | double quality = QualityParameter.ActualValue.Value;
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| 197 | double transportationCosts = TransportationCostsParameter.ActualValue.Value;
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| 198 | double expectedRandomQuality = ExpectedRandomQualityParameter.ActualValue.Value;
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| 199 |
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| 200 | double flowDistanceQuality = FlowDistanceQualityParameter.ActualValue.Value;
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| 201 | double installationQuality = InstallationQualityParameter.ActualValue.Value;
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| 202 | double overbookedCapacity = OverbookedCapacityParameter.ActualValue.Value;
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| 203 |
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| 204 | Evaluate(MoveParameter.ActualValue,
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| 205 | AssignmentParameter.ActualValue,
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| 206 | WeightsParameter.ActualValue, DistancesParameter.ActualValue,
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| 207 | InstallationCostsParameter.ActualValue,
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| 208 | DemandsParameter.ActualValue, CapacitiesParameter.ActualValue,
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| 209 | evaluator,
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| 210 | out moveFlowDistanceQuality, out moveInstallationQuality, out moveOverbookedCapacity);
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| 211 |
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| 212 | MoveFlowDistanceQualityParameter.ActualValue = new DoubleValue(flowDistanceQuality + moveFlowDistanceQuality);
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| 213 | MoveInstallationQualityParameter.ActualValue = new DoubleValue(installationQuality + moveInstallationQuality);
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| 214 | MoveOverbookedCapacityParameter.ActualValue = new DoubleValue(overbookedCapacity + moveOverbookedCapacity);
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| 215 |
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| 216 | MoveQualityParameter.ActualValue = new DoubleValue(evaluator.GetFitness(
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| 217 | flowDistanceQuality + moveFlowDistanceQuality,
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| 218 | installationQuality + moveInstallationQuality,
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| 219 | overbookedCapacity + moveOverbookedCapacity,
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| 220 | transportationCosts, expectedRandomQuality));
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| 221 | return base.Apply();
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| 222 | }
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| 223 | }
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| 224 | }
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