1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2017 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.Collections.Generic;
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24 | using System.Linq;
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25 | using System.Text.RegularExpressions;
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26 | using System.Threading;
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27 | using HeuristicLab.Common;
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28 | using HeuristicLab.Core;
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29 | using HeuristicLab.Core.Networks;
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30 | using HeuristicLab.Data;
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31 | using HeuristicLab.Encodings.BinaryVectorEncoding;
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32 | using HeuristicLab.Encodings.IntegerVectorEncoding;
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33 | using HeuristicLab.Encodings.PermutationEncoding;
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34 | using HeuristicLab.Encodings.RealVectorEncoding;
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35 | using HeuristicLab.Operators;
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36 | using HeuristicLab.Optimization;
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37 | using HeuristicLab.Parameters;
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38 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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39 | using HeuristicLab.Problems.FacilityLocation;
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40 | using HeuristicLab.Problems.VehicleRouting;
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41 | using HeuristicLab.Problems.VehicleRouting.Encodings.General;
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42 | using HeuristicLab.Problems.VehicleRouting.ProblemInstances;
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43 |
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44 | namespace HeuristicLab.Networks.IntegratedOptimization.LocationRouting {
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45 | [Item("LrpOrchestratorNode1", "Orchestrator for LRP optimization network version 1.")]
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46 | [StorableClass]
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47 | public sealed class LrpOrchestratorNode1 : OrchestratorNode {
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48 | #region Constants
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49 | private const string InstanceParameterName = "Instance";
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50 | private const string FlpParameterName = "FLP";
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51 | private const string VrpParameterName = "VRP";
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52 | private const string MetaSolverName = "MetaSolver";
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53 | private const string FlpSolverName = "FlpSolver";
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54 | private const string VrpSolverName = "VrpSolver";
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55 | #endregion
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56 |
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57 | private CancellationTokenSource cts;
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58 | private ResultCollection vrpResults, flpResults;
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59 |
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60 | [Storable]
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61 | int nrOfDepots, nrOfCustomers;
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62 | [Storable]
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63 | double[,] depotCoordinates, customerCoordinates;
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64 | [Storable]
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65 | LrpUtils.DistanceType distanceType;
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66 | [Storable]
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67 | double[] depotCapacities, customerDemands, depotCosts;
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68 | [Storable]
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69 | double vehicleCapacity, vehicleCost;
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70 |
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71 | #region Parameters
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72 | public IFixedValueParameter<TextFileValue> InstanceParameter {
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73 | get { return (IFixedValueParameter<TextFileValue>)Parameters[InstanceParameterName]; }
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74 | }
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75 |
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76 | public IValueParameter<FacilityLocationProblem> FlpParameter {
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77 | get { return (IValueParameter<FacilityLocationProblem>)Parameters[FlpParameterName]; }
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78 | }
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79 |
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80 | public IValueParameter<VehicleRoutingProblem> VrpParameter {
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81 | get { return (IValueParameter<VehicleRoutingProblem>)Parameters[VrpParameterName]; }
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82 | }
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83 | #endregion
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84 |
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85 | #region Ports
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86 | public IMessagePort MetaSolverOrchestrationPort {
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87 | get { return (IMessagePort)Ports[MetaSolverName + OrchestrationPortNameSuffix]; }
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88 | }
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89 |
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90 | public IMessagePort MetaSolverEvaluationPort {
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91 | get { return (IMessagePort)Ports[MetaSolverName + EvaluationPortNameSuffix]; }
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92 | }
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93 |
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94 | public IMessagePort FlpSolverOrchestrationPort {
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95 | get { return (IMessagePort)Ports[FlpSolverName + OrchestrationPortNameSuffix]; }
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96 | }
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97 |
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98 | public IMessagePort FlpSolverEvaluationPort {
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99 | get { return (IMessagePort)Ports[FlpSolverName + EvaluationPortNameSuffix]; }
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100 | }
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101 |
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102 | public IMessagePort VrpSolverOrchestrationPort {
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103 | get { return (IMessagePort)Ports[VrpSolverName + OrchestrationPortNameSuffix]; }
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104 | }
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105 |
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106 | public IMessagePort VrpSolverEvaluationPort {
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107 | get { return (IMessagePort)Ports[VrpSolverName + EvaluationPortNameSuffix]; }
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108 | }
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109 | #endregion
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110 |
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111 | [StorableConstructor]
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112 | private LrpOrchestratorNode1(bool deserializing) : base(deserializing) { }
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113 | private LrpOrchestratorNode1(LrpOrchestratorNode1 original, Cloner cloner) : base(original, cloner) {
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114 | nrOfDepots = original.nrOfDepots;
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115 | nrOfCustomers = original.nrOfCustomers;
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116 | depotCoordinates = (double[,])original.depotCoordinates.Clone();
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117 | customerCoordinates = (double[,])original.customerCoordinates.Clone();
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118 | distanceType = original.distanceType;
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119 | depotCapacities = (double[])original.depotCapacities.Clone();
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120 | customerDemands = (double[])original.customerDemands.Clone();
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121 | depotCosts = (double[])original.depotCosts.Clone();
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122 | vehicleCapacity = original.vehicleCapacity;
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123 | vehicleCost = original.vehicleCost;
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124 |
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125 | RegisterEvents();
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126 | }
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127 | public LrpOrchestratorNode1() : this("LrpOrchestratorNode1") { }
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128 | public LrpOrchestratorNode1(string name) : base(name) {
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129 | #region Configure Parameters
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130 | Parameters.Add(new FixedValueParameter<TextFileValue>(InstanceParameterName));
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131 | Parameters.Add(new ValueParameter<FacilityLocationProblem>(FlpParameterName, new FacilityLocationProblem()));
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132 | Parameters.Add(new ValueParameter<VehicleRoutingProblem>(VrpParameterName, new VehicleRoutingProblem() { ProblemInstance = new CVRPProblemInstance() }));
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133 | #endregion
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134 |
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135 | #region Configure Ports
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136 | AddOrchestrationPort<VariegationProblem>(MetaSolverName);
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137 | AddEvaluationPort<RealVector>(MetaSolverName, "RealVector", "Quality");
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138 | AddOrchestrationPort<VehicleRoutingProblem>(VrpSolverName);
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139 | AddEvaluationPort<Permutation>(VrpSolverName, "TSPTour", "TSPTourLength");
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140 | AddOrchestrationPort<FacilityLocationProblem>(FlpSolverName);
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141 | AddEvaluationPort<BinaryVector>(FlpSolverName, "KnapsackSolution", "Quality");
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142 |
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143 | RegisterEvents();
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144 | #endregion
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145 | }
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146 |
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147 | public override IDeepCloneable Clone(Cloner cloner) {
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148 | return new LrpOrchestratorNode1(this, cloner);
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149 | }
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150 |
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151 | [StorableHook(HookType.AfterDeserialization)]
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152 | private void AfterDeserialization() {
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153 | RegisterEvents();
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154 | }
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155 |
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156 | private void RegisterEvents() {
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157 | InstanceParameter.Value.ToStringChanged += InstanceParameter_Value_ToStringChanged;
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158 | MetaSolverOrchestrationPort.ConnectedPortChanged += MetaSolverOrchestrationPort_ConnectedPortChanged;
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159 | VrpSolverOrchestrationPort.ConnectedPortChanged += VrpSolverOrchestrationPort_ConnectedPortChanged;
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160 | FlpSolverOrchestrationPort.ConnectedPortChanged += FlpSolverOrchestrationPort_ConnectedPortChanged;
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161 | }
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162 |
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163 | private void InstanceParameter_Value_ToStringChanged(object sender, EventArgs e) {
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164 | string filePath = InstanceParameter.Value.Value;
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165 | LrpUtils.Import(filePath, out nrOfDepots, out nrOfCustomers,
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166 | out depotCoordinates, out customerCoordinates,
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167 | out distanceType,
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168 | out depotCapacities, out customerDemands, out depotCosts,
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169 | out vehicleCapacity, out vehicleCost);
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170 |
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171 | var flp = FlpParameter.Value;
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172 | flp.CustomerDemandsParameter.Value = new DoubleArray(customerDemands);
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173 | flp.DeliveryCostsParameter.Value = new DoubleMatrix(LrpUtils.GetFlpDeliveryCosts(depotCoordinates, customerCoordinates, distanceType));
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174 | flp.DepotCapacitiesParameter.Value = new DoubleArray(depotCapacities);
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175 | flp.Encoding.Length = nrOfCustomers;
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176 | flp.OpeningCostsParameter.Value = new DoubleArray(depotCosts);
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177 |
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178 | var vrpInstance = (CVRPProblemInstance)VrpParameter.Value.ProblemInstance;
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179 | vrpInstance.Capacity.Value = vehicleCapacity;
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180 | vrpInstance.FleetUsageFactor.Value = vehicleCost;
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181 | vrpInstance.OverloadPenalty.Value = vehicleCost * 1000.0;
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182 |
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183 | var crossover = VrpParameter.Value.OperatorsParameter.Value.OfType<MultiVRPSolutionCrossover>().Single(x => x.Name == "MultiVRPSolutionCrossover");
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184 | foreach (var c in crossover.Operators)
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185 | crossover.Operators.SetItemCheckedState(c, c.Name.StartsWith("Potvin"));
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186 | var mutator = VrpParameter.Value.OperatorsParameter.Value.OfType<MultiVRPSolutionManipulator>().Single(x => x.Name == "MultiVRPSolutionManipulator");
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187 | foreach (var m in mutator.Operators)
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188 | mutator.Operators.SetItemCheckedState(m, Regex.IsMatch(m.Name, @"Potvin(One|Two).*"));
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189 | }
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190 |
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191 | public override void Prepare() {
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192 | Results.Clear();
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193 |
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194 | var metaMsg = MetaSolverOrchestrationPort.PrepareMessage();
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195 | metaMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Prepare | OrchestrationMessage.QualityAdaption);
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196 | var problem = new VariegationProblem();
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197 | problem.Encoding.Length = FlpParameter.Value.Encoding.Length * 2;
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198 | problem.Encoding.Bounds = new DoubleMatrix(new[,] { { 0.0, 2.0 } });
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199 | metaMsg["Problem"] = problem;
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200 | MetaSolverOrchestrationPort.SendMessage(metaMsg);
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201 | }
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202 |
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203 | public override void Start() {
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204 | cts = new CancellationTokenSource();
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205 |
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206 | try {
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207 | var metaMsg = MetaSolverOrchestrationPort.PrepareMessage();
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208 | metaMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Start);
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209 | MetaSolverOrchestrationPort.SendMessage(metaMsg);
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210 | } catch (Exception e) { }
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211 | }
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212 |
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213 | public override void Pause() {
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214 | cts.Cancel();
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215 |
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216 | var metaMsg = MetaSolverOrchestrationPort.PrepareMessage();
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217 | metaMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Pause);
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218 | MetaSolverOrchestrationPort.SendMessage(metaMsg);
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219 |
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220 | var vrpMsg = VrpSolverOrchestrationPort.PrepareMessage();
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221 | vrpMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Stop);
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222 | VrpSolverOrchestrationPort.SendMessage(vrpMsg);
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223 |
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224 | var kspMsg = FlpSolverOrchestrationPort.PrepareMessage();
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225 | kspMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Stop);
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226 | FlpSolverOrchestrationPort.SendMessage(kspMsg);
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227 | }
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228 |
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229 | public override void Stop() {
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230 | cts.Cancel();
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231 |
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232 | var metaMsg = MetaSolverOrchestrationPort.PrepareMessage();
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233 | metaMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Stop);
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234 | MetaSolverOrchestrationPort.SendMessage(metaMsg);
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235 |
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236 | var vrpMsg = VrpSolverOrchestrationPort.PrepareMessage();
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237 | vrpMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Stop);
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238 | VrpSolverOrchestrationPort.SendMessage(vrpMsg);
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239 |
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240 | var kspMsg = FlpSolverOrchestrationPort.PrepareMessage();
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241 | kspMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Stop);
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242 | FlpSolverOrchestrationPort.SendMessage(kspMsg);
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243 | }
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244 |
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245 | protected override void ProcessMessage(IMessage message, IMessagePort port, CancellationToken token) {
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246 | var messageActions = new Dictionary<IMessagePort, Action<IMessage>>();
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247 | messageActions.Add(MetaSolverOrchestrationPort, MetaSolverOrchestrationPortMessage);
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248 | messageActions.Add(MetaSolverEvaluationPort, MetaSolverEvaluationPortMessage);
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249 | messageActions.Add(VrpSolverOrchestrationPort, VrpSolverOrchestrationPortMessage);
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250 | messageActions.Add(VrpSolverEvaluationPort, VrpSolverEvaluationPortMessage);
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251 | messageActions.Add(FlpSolverOrchestrationPort, FlpSolverOrchestrationPortMessage);
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252 | messageActions.Add(FlpSolverEvaluationPort, FlpSolverEvaluationPortMessage);
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253 |
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254 | messageActions[port](message);
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255 |
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256 | base.ProcessMessage(message, port, token);
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257 | }
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258 |
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259 | #region MetaSolver Message Handling
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260 | private void MetaSolverOrchestrationPortMessage(IMessage message) { }
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261 |
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262 | private void MetaSolverEvaluationPortMessage(IMessage message) {
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263 | var factors = (RealVector)message["RealVector"];
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264 |
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265 | var flp = (FacilityLocationProblem)FlpParameter.Value.Clone();
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266 | var cc = (double[,])customerCoordinates.Clone();
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267 | for (int i = 0; i < nrOfCustomers; i++) {
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268 | cc[i, 0] = cc[i, 0] * factors[i * 2];
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269 | cc[i, 1] = cc[i, 1] * factors[i * 2 + 1];
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270 | }
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271 | flp.DeliveryCostsParameter.Value = new DoubleMatrix(LrpUtils.GetFlpDeliveryCosts(depotCoordinates, cc, distanceType));
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272 |
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273 | var flpMsg = FlpSolverOrchestrationPort.PrepareMessage();
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274 | flpMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Prepare | OrchestrationMessage.Start);
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275 | flpMsg["Problem"] = flp;
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276 | FlpSolverOrchestrationPort.SendMessage(flpMsg);
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277 | cts.Token.ThrowIfCancellationRequested();
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278 |
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279 | var bestFlpSolution = (IntegerVector)flpResults["Best Solution"].Value;
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280 | var flpSolution = FlpParameter.Value.GetSolution(bestFlpSolution);
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281 |
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282 | var depots = bestFlpSolution.Select((x, i) => Tuple.Create(x, i)).GroupBy(x => x.Item1, x => x.Item2);
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283 | var vrpSolutions = new ResultCollection(depots.Count());
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284 | foreach (var depot in depots.OrderBy(x => x.Key)) {
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285 | var depotIdx = depot.Key;
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286 | var customers = depot.ToArray();
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287 |
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288 | var vrp = (VehicleRoutingProblem)VrpParameter.Value.Clone();
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289 | var vrpInstance = (CVRPProblemInstance)vrp.ProblemInstance;
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290 | var coordinates = LrpUtils.GetVrpCoordinates(depotCoordinates, customerCoordinates, depotIdx, customers);
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291 | var distances = LrpUtils.GetVrpDistances(coordinates, distanceType);
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292 | vrpInstance.Coordinates = new DoubleMatrix(coordinates);
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293 | vrpInstance.DistanceMatrix = new DoubleMatrix(distances);
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294 | vrpInstance.Demand = new DoubleArray(new[] { 0.0 }.Concat(customers.Select(x => customerDemands[x])).ToArray());
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295 | vrpInstance.Vehicles.Value = customers.Length;
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296 |
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297 | var vrpMsg = VrpSolverOrchestrationPort.PrepareMessage();
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298 | vrpMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Prepare | OrchestrationMessage.Start);
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299 | vrpMsg["Problem"] = vrp;
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300 | VrpSolverOrchestrationPort.SendMessage(vrpMsg);
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301 | cts.Token.ThrowIfCancellationRequested();
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302 |
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303 | var bestVrpSolution = (VRPSolution)vrpResults["Best valid VRP Solution"].Value.Clone();
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304 | vrpSolutions.Add(new Result("Depot " + depot.Key, bestVrpSolution));
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305 | }
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306 |
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307 | #region Analyze
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308 | double objectiveValue = LrpUtils.Evaluate(flpSolution, vrpSolutions.Select(x => (VRPSolution)x.Value).ToArray());
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309 | ((DoubleValue)message["Quality"]).Value = objectiveValue;
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310 |
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311 | IResult bestQuality;
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312 | if (!Results.TryGetValue("Best LRP Quality", out bestQuality)) {
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313 | Results.Add(new Result("Best LRP Quality", new DoubleValue(objectiveValue)));
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314 | Results.Add(new Result("Best FLP Solution", flpSolution));
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315 | Results.Add(new Result("Best VRP Solutions", vrpSolutions));
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316 | } else if (objectiveValue < ((DoubleValue)bestQuality.Value).Value) {
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317 | ((DoubleValue)bestQuality.Value).Value = objectiveValue;
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318 | Results["Best FLP Solution"].Value = flpSolution;
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319 | Results["Best VRP Solutions"].Value = vrpSolutions;
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320 | }
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321 | #endregion
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322 | }
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323 | #endregion
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324 |
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325 | #region VrpSolver Message Handling
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326 | private void VrpSolverOrchestrationPortMessage(IMessage message) {
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327 | var results = (ResultCollection)message["Results"];
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328 | if (results.ContainsKey("Best valid VRP Solution")) {
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329 | vrpResults = results;
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330 | }
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331 | }
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332 |
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333 | private void VrpSolverEvaluationPortMessage(IMessage message) { }
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334 | #endregion
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335 |
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336 | #region KspSolver Message Handling
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337 | private void FlpSolverOrchestrationPortMessage(IMessage message) {
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338 | var results = (ResultCollection)message["Results"];
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339 | if (results.ContainsKey("Best Solution")) {
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340 | flpResults = results;
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341 | }
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342 | }
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343 |
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344 | private void FlpSolverEvaluationPortMessage(IMessage message) { }
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345 | #endregion
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346 |
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347 | #region Event Handlers
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348 | private void MetaSolverOrchestrationPort_ConnectedPortChanged(object sender, EventArgs e) {
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349 | if (MetaSolverOrchestrationPort.ConnectedPort == null) return;
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350 |
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351 | var node = MetaSolverOrchestrationPort.ConnectedPort.Parent as OrchestratedAlgorithmNode;
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352 | if (node == null) return;
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353 |
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354 | var hook = new HookOperator { Name = "Meta Eval Hook" };
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355 | hook.Parameters.Add(new LookupParameter<RealVector>("RealVector") { Hidden = true });
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356 | hook.Parameters.Add(new LookupParameter<DoubleValue>("Quality") { Hidden = true });
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357 | node.EvalHook = hook;
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358 |
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359 | node.OrchestrationPort.CloneParametersFromPort(MetaSolverOrchestrationPort);
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360 | node.EvaluationPort.CloneParametersFromPort(MetaSolverEvaluationPort);
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361 | node.EvaluationPort.ConnectedPort = MetaSolverEvaluationPort;
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362 | }
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363 |
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364 | private void VrpSolverOrchestrationPort_ConnectedPortChanged(object sender, EventArgs e) {
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365 | if (VrpSolverOrchestrationPort.ConnectedPort == null) return;
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366 |
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367 | var node = VrpSolverOrchestrationPort.ConnectedPort.Parent as OrchestratedAlgorithmNode;
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368 | if (node == null) return;
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369 |
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370 | var hook = new HookOperator { Name = "VRP Eval Hook" };
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371 | hook.Parameters.Add(new LookupParameter<Permutation>("VRPTours") { Hidden = true });
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372 | hook.Parameters.Add(new LookupParameter<DoubleValue>("Quality") { Hidden = true });
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373 | node.EvalHook = hook;
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374 |
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375 | node.OrchestrationPort.CloneParametersFromPort(VrpSolverOrchestrationPort);
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376 | node.EvaluationPort.CloneParametersFromPort(VrpSolverEvaluationPort);
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377 | node.EvaluationPort.ConnectedPort = VrpSolverEvaluationPort;
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378 | }
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379 |
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380 | private void FlpSolverOrchestrationPort_ConnectedPortChanged(object sender, EventArgs e) {
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381 | if (FlpSolverOrchestrationPort.ConnectedPort == null) return;
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382 |
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383 | var node = FlpSolverOrchestrationPort.ConnectedPort.Parent as OrchestratedAlgorithmNode;
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384 | if (node == null) return;
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385 |
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386 | var hook = new HookOperator { Name = "FLP Eval Hook" };
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387 | hook.Parameters.Add(new LookupParameter<BinaryVector>("IntegerVector") { Hidden = true });
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388 | hook.Parameters.Add(new LookupParameter<DoubleValue>("Quality") { Hidden = true });
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389 | node.EvalHook = hook;
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390 |
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391 | node.OrchestrationPort.CloneParametersFromPort(FlpSolverOrchestrationPort);
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392 | node.EvaluationPort.CloneParametersFromPort(FlpSolverEvaluationPort);
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393 | node.EvaluationPort.ConnectedPort = FlpSolverEvaluationPort;
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394 | }
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395 | #endregion
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396 | }
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397 | }
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