1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2010 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.Linq;
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24 | using HeuristicLab.Collections;
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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.Operators;
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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.VehicleRouting.Encodings.General {
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35 | [Item("MultiVRPSolutionCrossover", "Randomly selects and applies one of its crossovers every time it is called.")]
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36 | [StorableClass]
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37 | public class MultiVRPSolutionCrossover : StochasticMultiBranch<IVRPCrossover>, IVRPCrossover, IStochasticOperator {
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38 | public override bool CanChangeName {
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39 | get { return false; }
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40 | }
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41 | protected override bool CreateChildOperation {
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42 | get { return true; }
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43 | }
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44 |
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45 | public ILookupParameter<ItemArray<IVRPEncoding>> ParentsParameter {
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46 | get { return (ScopeTreeLookupParameter<IVRPEncoding>)Parameters["Parents"]; }
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47 | }
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48 |
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49 | public ILookupParameter<IVRPEncoding> ChildParameter {
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50 | get { return (ILookupParameter<IVRPEncoding>)Parameters["Child"]; }
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51 | }
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52 |
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53 | public int Cities {
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54 | get { return CoordinatesParameter.ActualValue.Rows - 1; }
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55 | }
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56 | public ILookupParameter<DoubleMatrix> CoordinatesParameter {
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57 | get { return (ILookupParameter<DoubleMatrix>)Parameters["Coordinates"]; }
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58 | }
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59 | public ILookupParameter<DoubleMatrix> DistanceMatrixParameter {
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60 | get { return (ILookupParameter<DoubleMatrix>)Parameters["DistanceMatrix"]; }
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61 | }
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62 | public ILookupParameter<BoolValue> UseDistanceMatrixParameter {
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63 | get { return (ILookupParameter<BoolValue>)Parameters["UseDistanceMatrix"]; }
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64 | }
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65 | public ILookupParameter<IntValue> VehiclesParameter {
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66 | get { return (ILookupParameter<IntValue>)Parameters["Vehicles"]; }
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67 | }
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68 | public ILookupParameter<DoubleValue> CapacityParameter {
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69 | get { return (ILookupParameter<DoubleValue>)Parameters["Capacity"]; }
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70 | }
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71 | public ILookupParameter<DoubleArray> DemandParameter {
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72 | get { return (ILookupParameter<DoubleArray>)Parameters["Demand"]; }
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73 | }
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74 | public ILookupParameter<DoubleArray> ReadyTimeParameter {
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75 | get { return (ILookupParameter<DoubleArray>)Parameters["ReadyTime"]; }
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76 | }
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77 | public ILookupParameter<DoubleArray> DueTimeParameter {
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78 | get { return (ILookupParameter<DoubleArray>)Parameters["DueTime"]; }
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79 | }
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80 | public ILookupParameter<DoubleArray> ServiceTimeParameter {
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81 | get { return (ILookupParameter<DoubleArray>)Parameters["ServiceTime"]; }
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82 | }
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83 |
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84 | [StorableConstructor]
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85 | private MultiVRPSolutionCrossover(bool deserializing) : base(deserializing) { }
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86 | protected MultiVRPSolutionCrossover(MultiVRPSolutionCrossover original, Cloner cloner) : base(original, cloner) { }
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87 | public override IDeepCloneable Clone(Cloner cloner) {
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88 | return new MultiVRPSolutionCrossover(this, cloner);
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89 | }
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90 | public MultiVRPSolutionCrossover()
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91 | : base() {
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92 | Parameters.Add(new ScopeTreeLookupParameter<IVRPEncoding>("Parents", "The parent permutations which should be crossed."));
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93 | ParentsParameter.ActualName = "VRPTours";
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94 | Parameters.Add(new LookupParameter<IVRPEncoding>("Child", "The child permutation resulting from the crossover."));
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95 | ChildParameter.ActualName = "VRPTours";
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96 |
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97 | Parameters.Add(new ValueLookupParameter<IntValue>("Cities", "The city count."));
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98 | Parameters.Add(new LookupParameter<DoubleMatrix>("Coordinates", "The coordinates of the cities."));
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99 | Parameters.Add(new LookupParameter<DoubleMatrix>("DistanceMatrix", "The matrix which contains the distances between the cities."));
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100 | Parameters.Add(new LookupParameter<BoolValue>("UseDistanceMatrix", "True if a distance matrix should be calculated and used for evaluation, otherwise false."));
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101 | Parameters.Add(new LookupParameter<IntValue>("Vehicles", "The number of vehicles."));
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102 | Parameters.Add(new LookupParameter<DoubleValue>("Capacity", "The capacity of each vehicle."));
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103 | Parameters.Add(new LookupParameter<DoubleArray>("Demand", "The demand of each customer."));
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104 | Parameters.Add(new LookupParameter<DoubleArray>("ReadyTime", "The ready time of each customer."));
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105 | Parameters.Add(new LookupParameter<DoubleArray>("DueTime", "The due time of each customer."));
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106 | Parameters.Add(new LookupParameter<DoubleArray>("ServiceTime", "The service time of each customer."));
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107 |
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108 | foreach (Type type in ApplicationManager.Manager.GetTypes(typeof(IVRPCrossover)).OrderBy(op => op.Name)) {
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109 | if (!typeof(MultiOperator<IVRPCrossover>).IsAssignableFrom(type))
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110 | Operators.Add((IVRPCrossover)Activator.CreateInstance(type), true);
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111 | }
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112 | }
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113 |
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114 | protected override void Operators_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedItem<IVRPCrossover>> e) {
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115 | base.Operators_ItemsReplaced(sender, e);
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116 | ParameterizeCrossovers();
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117 | }
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118 |
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119 | protected override void Operators_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<IVRPCrossover>> e) {
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120 | base.Operators_ItemsAdded(sender, e);
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121 | ParameterizeCrossovers();
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122 | }
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123 |
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124 | private void ParameterizeCrossovers() {
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125 | foreach (IVRPCrossover crossover in Operators.OfType<IVRPCrossover>()) {
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126 | crossover.ChildParameter.ActualName = ChildParameter.Name;
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127 | crossover.ParentsParameter.ActualName = ParentsParameter.Name;
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128 |
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129 | if (crossover.CoordinatesParameter != null) crossover.CoordinatesParameter.ActualName = CoordinatesParameter.Name;
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130 | if (crossover.DistanceMatrixParameter != null) crossover.DistanceMatrixParameter.ActualName = DistanceMatrixParameter.Name;
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131 | if (crossover.UseDistanceMatrixParameter != null) crossover.UseDistanceMatrixParameter.ActualName = UseDistanceMatrixParameter.Name;
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132 | if (crossover.VehiclesParameter != null) crossover.VehiclesParameter.ActualName = VehiclesParameter.Name;
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133 | if (crossover.CapacityParameter != null) crossover.CapacityParameter.ActualName = CapacityParameter.Name;
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134 | if (crossover.DemandParameter != null) crossover.DemandParameter.ActualName = DemandParameter.Name;
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135 | if (crossover.ReadyTimeParameter != null) crossover.ReadyTimeParameter.ActualName = ReadyTimeParameter.Name;
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136 | if (crossover.DueTimeParameter != null) crossover.DueTimeParameter.ActualName = DueTimeParameter.Name;
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137 | if (crossover.ServiceTimeParameter != null) crossover.ServiceTimeParameter.ActualName = ServiceTimeParameter.Name;
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138 | }
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139 | foreach (IStochasticOperator crossover in Operators.OfType<IStochasticOperator>()) {
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140 | crossover.RandomParameter.ActualName = RandomParameter.Name;
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141 | }
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142 | }
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143 |
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144 | public override IOperation Apply() {
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145 | if (Operators.Count == 0) throw new InvalidOperationException(Name + ": Please add at least one permutation crossover to choose from.");
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146 | return base.Apply();
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147 | }
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148 | }
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149 | }
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