[7419] | 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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[7423] | 23 | using System.Collections.Generic;
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| 24 | using System.Linq;
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[7419] | 25 | using HeuristicLab.Common;
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| 26 | using HeuristicLab.Core;
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[7423] | 27 | using HeuristicLab.Data;
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[7419] | 28 | using HeuristicLab.Encodings.IntegerVectorEncoding;
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[7423] | 29 | using HeuristicLab.Parameters;
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[7419] | 30 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 31 |
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| 32 | namespace HeuristicLab.Problems.GeneralizedQuadraticAssignment.Operators {
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[7423] | 33 | [Item("GQAPPathRelinking", "Operator that performs path relinking between two solutions. It is described in Mateus, G., Resende, M., and Silva, R. 2011. GRASP with path-relinking for the generalized quadratic assignment problem. Journal of Heuristics 17, Springer Netherlands, pp. 527-565.")]
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[7419] | 34 | [StorableClass]
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[7423] | 35 | public class GQAPPathRelinking : GQAPCrossover, IQualitiesAwareGQAPOperator, IDemandsAwareGQAPOperator, ICapacitiesAwareGQAPOperator,
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| 36 | IWeightsAwareGQAPOperator, IDistancesAwareGQAPOperator, IInstallationCostsAwareGQAPOperator, ITransportationCostsAwareGQAPOperator,
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| 37 | IOverbookedCapacityPenaltyAwareGQAPOperator {
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[7419] | 38 |
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[7423] | 39 | public ILookupParameter<BoolValue> MaximizationParameter {
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| 40 | get { return (ILookupParameter<BoolValue>)Parameters["Maximization"]; }
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| 41 | }
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| 42 | public IScopeTreeLookupParameter<DoubleValue> QualityParameter {
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| 43 | get { return (IScopeTreeLookupParameter<DoubleValue>)Parameters["Quality"]; }
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| 44 | }
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| 45 | public IScopeTreeLookupParameter<DoubleValue> FlowDistanceQualityParameter {
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| 46 | get { return (IScopeTreeLookupParameter<DoubleValue>)Parameters["FlowDistanceQuality"]; }
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| 47 | }
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| 48 | public IScopeTreeLookupParameter<DoubleValue> InstallationQualityParameter {
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| 49 | get { return (IScopeTreeLookupParameter<DoubleValue>)Parameters["InstallationQuality"]; }
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| 50 | }
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| 51 | public IScopeTreeLookupParameter<DoubleValue> OverbookedCapacityParameter {
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| 52 | get { return (IScopeTreeLookupParameter<DoubleValue>)Parameters["OverbookedCapacity"]; }
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| 53 | }
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| 54 | public ILookupParameter<DoubleArray> DemandsParameter {
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| 55 | get { return (ILookupParameter<DoubleArray>)Parameters["Demands"]; }
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| 56 | }
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| 57 | public ILookupParameter<DoubleArray> CapacitiesParameter {
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| 58 | get { return (ILookupParameter<DoubleArray>)Parameters["Capacities"]; }
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| 59 | }
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| 60 | public ILookupParameter<DoubleMatrix> WeightsParameter {
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| 61 | get { return (ILookupParameter<DoubleMatrix>)Parameters["Weights"]; }
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| 62 | }
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| 63 | public ILookupParameter<DoubleMatrix> DistancesParameter {
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| 64 | get { return (ILookupParameter<DoubleMatrix>)Parameters["Distances"]; }
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| 65 | }
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| 66 | public ILookupParameter<DoubleMatrix> InstallationCostsParameter {
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| 67 | get { return (ILookupParameter<DoubleMatrix>)Parameters["InstallationCosts"]; }
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| 68 | }
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| 69 | public IValueLookupParameter<DoubleValue> TransportationCostsParameter {
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| 70 | get { return (IValueLookupParameter<DoubleValue>)Parameters["TransportationCosts"]; }
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| 71 | }
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| 72 | public IValueLookupParameter<DoubleValue> OverbookedCapacityPenaltyParameter {
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| 73 | get { return (IValueLookupParameter<DoubleValue>)Parameters["OverbookedCapacityPenalty"]; }
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| 74 | }
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| 75 |
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[7419] | 76 | [StorableConstructor]
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| 77 | protected GQAPPathRelinking(bool deserializing) : base(deserializing) { }
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| 78 | protected GQAPPathRelinking(GQAPPathRelinking original, Cloner cloner) : base(original, cloner) { }
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| 79 | public GQAPPathRelinking()
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| 80 | : base() {
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[7423] | 81 | Parameters.Add(new LookupParameter<BoolValue>("Maximization", GeneralizedQuadraticAssignmentProblem.MaximizationDescription));
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| 82 | Parameters.Add(new ScopeTreeLookupParameter<DoubleValue>("Quality", GQAPEvaluator.QualityDescription));
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| 83 | Parameters.Add(new ScopeTreeLookupParameter<DoubleValue>("FlowDistanceQuality", GQAPEvaluator.FlowDistanceQualityDescription));
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| 84 | Parameters.Add(new ScopeTreeLookupParameter<DoubleValue>("InstallationQuality", GQAPEvaluator.InstallationQualityDescription));
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| 85 | Parameters.Add(new ScopeTreeLookupParameter<DoubleValue>("OverbookedCapacity", GQAPEvaluator.OverbookedCapacityDescription));
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| 86 | Parameters.Add(new LookupParameter<DoubleArray>("Demands", GeneralizedQuadraticAssignmentProblem.DemandsDescription));
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| 87 | Parameters.Add(new LookupParameter<DoubleArray>("Capacities", GeneralizedQuadraticAssignmentProblem.CapacitiesDescription));
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| 88 | Parameters.Add(new LookupParameter<DoubleMatrix>("Weights", GeneralizedQuadraticAssignmentProblem.WeightsDescription));
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| 89 | Parameters.Add(new LookupParameter<DoubleMatrix>("Distances", GeneralizedQuadraticAssignmentProblem.DistancesDescription));
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| 90 | Parameters.Add(new LookupParameter<DoubleMatrix>("InstallationCosts", GeneralizedQuadraticAssignmentProblem.InstallationCostsDescription));
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| 91 | Parameters.Add(new ValueLookupParameter<DoubleValue>("TransportationCosts", GeneralizedQuadraticAssignmentProblem.TransportationCostsDescription));
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| 92 | Parameters.Add(new ValueLookupParameter<DoubleValue>("OverbookedCapacityPenalty", GeneralizedQuadraticAssignmentProblem.OverbookedCapacityPenaltyDescription));
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[7419] | 93 | }
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| 94 |
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| 95 | public override IDeepCloneable Clone(Cloner cloner) {
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| 96 | return new GQAPPathRelinking(this, cloner);
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| 97 | }
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| 98 |
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[7423] | 99 | public static IntegerVector Apply(IRandom random, ItemArray<IntegerVector> parents, ItemArray<DoubleValue> qualities, DoubleArray demands,
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| 100 | DoubleArray capacities, DoubleMatrix weights, DoubleMatrix distances, DoubleMatrix installationCosts, DoubleValue transportationCosts,
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| 101 | DoubleValue overbookedCapacityPenalty) {
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| 102 | if (random == null) throw new ArgumentNullException("random", "No IRandom provider is given.");
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| 103 | if (parents == null || !parents.Any()) throw new ArgumentException("No parents given for path relinking.", "parents");
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| 104 | if (parents.Length != 2) throw new ArgumentException(String.Format("Two parents were expected for path relinking, but {0} was/were given.", parents.Length.ToString()), "parents");
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| 105 | if (parents[0].Length != parents[1].Length) throw new ArgumentException("The length of the parents is not equal.", "parents");
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| 106 | if (qualities == null || qualities.Length == 0) throw new ArgumentException("The qualities are not given.", "qualities");
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| 107 | if (qualities.Length != parents.Length) throw new ArgumentException(String.Format("There are a different number of parents ({0}) than quality values ({1})", parents.Length.ToString(), qualities.Length.ToString()));
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| 108 |
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| 109 | var source = parents[0];
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| 110 | var target = parents[1];
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| 111 |
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| 112 | var pi_prime = (IntegerVector)source.Clone();
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| 113 | var fix = new HashSet<int>();
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| 114 | var nonFix = new HashSet<int>(Enumerable.Range(0, demands.Length));
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| 115 | var phi = GQAPIntegerVectorProximityCalculator.GetDifference(pi_prime, target);
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| 116 |
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| 117 | while (phi.Any()) {
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| 118 | var B = new HashSet<IntegerVector>();
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| 119 | foreach (var v in phi) {
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| 120 | pi_prime[v] = target[v];
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| 121 | var pi2 = makeFeasible(pi_prime, v);
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| 122 |
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| 123 | double flowDistanceQuality, installationQuality, overbookedCapacity;
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| 124 | GQAPEvaluator.Evaluate(pi2, weights, distances, installationCosts, demands, capacities,
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| 125 | out flowDistanceQuality, out installationQuality, out overbookedCapacity);
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| 126 | }
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| 127 | }
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| 128 |
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| 129 | return pi_prime;
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| 130 | }
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| 131 |
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[7419] | 132 | protected override IntegerVector Cross(IRandom random, ItemArray<IntegerVector> parents) {
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[7423] | 133 | return Apply(random, parents, QualityParameter.ActualValue, DemandsParameter.ActualValue,
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| 134 | CapacitiesParameter.ActualValue, WeightsParameter.ActualValue, DistancesParameter.ActualValue,
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| 135 | InstallationCostsParameter.ActualValue, TransportationCostsParameter.ActualValue,
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| 136 | OverbookedCapacityPenaltyParameter.ActualValue);
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[7419] | 137 | }
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[7423] | 138 |
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| 139 | private static IntegerVector makeFeasible(IntegerVector assignment, int equipment) {
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| 140 | // TODO: implement
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| 141 | return assignment;
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| 142 | }
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[7419] | 143 | }
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| 144 | }
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