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.Threading;
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26 | using HeuristicLab.Common;
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27 | using HeuristicLab.Core;
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28 | using HeuristicLab.Core.Networks;
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29 | using HeuristicLab.Data;
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30 | using HeuristicLab.Encodings.BinaryVectorEncoding;
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31 | using HeuristicLab.Encodings.PermutationEncoding;
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32 | using HeuristicLab.Encodings.RealVectorEncoding;
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33 | using HeuristicLab.Operators;
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34 | using HeuristicLab.Optimization;
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35 | using HeuristicLab.Parameters;
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36 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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37 | using HeuristicLab.Problems.Knapsack;
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38 | using HeuristicLab.Problems.TravelingSalesman;
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39 |
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40 | namespace HeuristicLab.Networks.IntegratedOptimization.TravelingThief {
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41 | [Item("TtpOrchestratorNode3", "Orchestrator for TTP optimization network version 3.")]
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42 | [StorableClass]
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43 | public sealed class TtpOrchestratorNode3 : OrchestratorNode {
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44 | #region Constants
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45 | private const string InstanceParameterName = "Instance";
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46 | private const string TspParameterName = "TSP";
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47 | private const string KspParameterName = "KSP";
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48 | private const string AvailabilityParameterName = "Availability";
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49 | private const string MinSpeedParameterName = "MinSpeed";
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50 | private const string MaxSpeedParameterName = "MaxSpeed";
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51 | private const string RentingRatioParameterName = "RentingRatio";
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52 | private const string MetaSolverName = "MetaSolver";
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53 | private const string TspSolverName = "TspSolver";
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54 | private const string KspSolverName = "KspSolver";
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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 tspResults, kspResults;
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59 |
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60 | [Storable]
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61 | double[,] tspCoordinates;
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62 | [Storable]
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63 | TtpUtils.DistanceType distanceType;
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64 | [Storable]
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65 | int kspCapacity;
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66 | [Storable]
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67 | int[] kspItemWeights, kspItemValues, ttpAvailability;
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68 | [Storable]
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69 | double ttpMinSpeed, ttpMaxSpeed, ttpRentingRatio;
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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<TravelingSalesmanProblem> TspParameter {
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77 | get { return (IValueParameter<TravelingSalesmanProblem>)Parameters[TspParameterName]; }
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78 | }
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79 |
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80 | public IValueParameter<BinaryKnapsackProblem> KspParameter {
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81 | get { return (IValueParameter<BinaryKnapsackProblem>)Parameters[KspParameterName]; }
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82 | }
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83 |
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84 | public IValueParameter<IntArray> AvailabilityParameter {
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85 | get { return (IValueParameter<IntArray>)Parameters[AvailabilityParameterName]; }
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86 | }
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87 |
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88 | public IValueParameter<DoubleValue> MinSpeedParameter {
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89 | get { return (IValueParameter<DoubleValue>)Parameters[MinSpeedParameterName]; }
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90 | }
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91 |
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92 | public IValueParameter<DoubleValue> MaxSpeedParameter {
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93 | get { return (IValueParameter<DoubleValue>)Parameters[MaxSpeedParameterName]; }
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94 | }
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95 |
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96 | public IValueParameter<DoubleValue> RentingRatioParameter {
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97 | get { return (IValueParameter<DoubleValue>)Parameters[RentingRatioParameterName]; }
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98 | }
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99 | #endregion
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100 |
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101 | #region Ports
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102 | public IMessagePort MetaSolverOrchestrationPort {
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103 | get { return (IMessagePort)Ports[MetaSolverName + OrchestrationPortNameSuffix]; }
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104 | }
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105 |
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106 | public IMessagePort MetaSolverEvaluationPort {
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107 | get { return (IMessagePort)Ports[MetaSolverName + EvaluationPortNameSuffix]; }
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108 | }
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109 |
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110 | public IMessagePort TspSolverOrchestrationPort {
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111 | get { return (IMessagePort)Ports[TspSolverName + OrchestrationPortNameSuffix]; }
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112 | }
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113 |
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114 | public IMessagePort TspSolverEvaluationPort {
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115 | get { return (IMessagePort)Ports[TspSolverName + EvaluationPortNameSuffix]; }
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116 | }
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117 |
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118 | public IMessagePort KspSolverOrchestrationPort {
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119 | get { return (IMessagePort)Ports[KspSolverName + OrchestrationPortNameSuffix]; }
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120 | }
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121 |
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122 | public IMessagePort KspSolverEvaluationPort {
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123 | get { return (IMessagePort)Ports[KspSolverName + EvaluationPortNameSuffix]; }
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124 | }
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125 | #endregion
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126 |
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127 | [StorableConstructor]
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128 | private TtpOrchestratorNode3(bool deserializing) : base(deserializing) { }
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129 | private TtpOrchestratorNode3(TtpOrchestratorNode3 original, Cloner cloner) : base(original, cloner) {
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130 | tspCoordinates = (double[,])original.tspCoordinates.Clone();
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131 | kspCapacity = original.kspCapacity;
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132 | kspItemWeights = (int[])original.kspItemWeights.Clone();
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133 | kspItemValues = (int[])original.kspItemValues.Clone();
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134 | ttpAvailability = (int[])original.ttpAvailability.Clone();
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135 | ttpMinSpeed = original.ttpMinSpeed;
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136 | ttpMaxSpeed = original.ttpMaxSpeed;
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137 | ttpRentingRatio = original.ttpRentingRatio;
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138 |
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139 | RegisterEvents();
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140 | }
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141 | public TtpOrchestratorNode3() : this("TtpOrchestratorNode3") { }
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142 | public TtpOrchestratorNode3(string name) : base(name) {
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143 | #region Configure Parameters
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144 | Parameters.Add(new FixedValueParameter<TextFileValue>(InstanceParameterName));
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145 | Parameters.Add(new ValueParameter<TravelingSalesmanProblem>(TspParameterName, new TravelingSalesmanProblem()));
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146 | Parameters.Add(new ValueParameter<BinaryKnapsackProblem>(KspParameterName, new BinaryKnapsackProblem()));
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147 | Parameters.Add(new ValueParameter<IntArray>(AvailabilityParameterName));
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148 | Parameters.Add(new ValueParameter<DoubleValue>(MinSpeedParameterName, new DoubleValue(0.1)));
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149 | Parameters.Add(new ValueParameter<DoubleValue>(MaxSpeedParameterName, new DoubleValue(1.0)));
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150 | Parameters.Add(new ValueParameter<DoubleValue>(RentingRatioParameterName, new DoubleValue(0.5)));
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151 | #endregion
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152 |
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153 | #region Configure Ports
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154 | AddOrchestrationPort<VariegationProblem>(MetaSolverName);
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155 | AddEvaluationPort<RealVector>(MetaSolverName, "RealVector", "Quality");
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156 | AddOrchestrationPort<TravelingSalesmanProblem>(TspSolverName);
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157 | AddEvaluationPort<Permutation>(TspSolverName, "TSPTour", "TSPTourLength");
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158 | AddOrchestrationPort<BinaryKnapsackProblem>(KspSolverName);
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159 | AddEvaluationPort<BinaryVector>(KspSolverName, "KnapsackSolution", "Quality");
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160 |
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161 | RegisterEvents();
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162 | #endregion
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163 | }
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164 |
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165 | public override IDeepCloneable Clone(Cloner cloner) {
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166 | return new TtpOrchestratorNode3(this, cloner);
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167 | }
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168 |
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169 | [StorableHook(HookType.AfterDeserialization)]
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170 | private void AfterDeserialization() {
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171 | RegisterEvents();
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172 | }
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173 |
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174 | private void RegisterEvents() {
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175 | InstanceParameter.Value.ToStringChanged += InstanceParameter_Value_ToStringChanged;
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176 | MetaSolverOrchestrationPort.ConnectedPortChanged += MetaSolverOrchestrationPort_ConnectedPortChanged;
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177 | TspSolverOrchestrationPort.ConnectedPortChanged += TspSolverOrchestrationPort_ConnectedPortChanged;
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178 | KspSolverOrchestrationPort.ConnectedPortChanged += KspSolverOrchestrationPort_ConnectedPortChanged;
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179 | }
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180 |
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181 | private void InstanceParameter_Value_ToStringChanged(object sender, EventArgs e) {
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182 | string filePath = InstanceParameter.Value.Value;
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183 | TtpUtils.Import(filePath, out tspCoordinates, out distanceType,
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184 | out kspCapacity, out kspItemValues, out kspItemWeights,
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185 | out ttpAvailability, out ttpMinSpeed, out ttpMaxSpeed, out ttpRentingRatio);
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186 |
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187 | var tsp = TspParameter.Value;
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188 | tsp.Coordinates = new DoubleMatrix(tspCoordinates);
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189 |
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190 | var ksp = KspParameter.Value;
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191 | ksp.KnapsackCapacity.Value = kspCapacity;
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192 | ksp.Encoding.Length = kspItemValues.Length;
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193 | ksp.Values = new IntArray(kspItemValues);
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194 | ksp.Weights = new IntArray(kspItemWeights);
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195 |
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196 | AvailabilityParameter.Value = new IntArray(ttpAvailability);
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197 | MinSpeedParameter.Value.Value = ttpMinSpeed;
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198 | MaxSpeedParameter.Value.Value = ttpMaxSpeed;
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199 | RentingRatioParameter.Value.Value = ttpRentingRatio;
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200 | }
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201 |
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202 | public override void Prepare() {
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203 | Results.Clear();
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204 |
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205 | var metaMsg = MetaSolverOrchestrationPort.PrepareMessage();
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206 | metaMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Prepare | OrchestrationMessage.QualityAdaption);
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207 | var problem = new VariegationProblem();
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208 | problem.Encoding.Length = KspParameter.Value.Length + TspParameter.Value.Coordinates.Rows * 2;
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209 | problem.Encoding.Bounds = new DoubleMatrix(new[,] { { -1.0, 1.0 } });
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210 | metaMsg["Problem"] = problem;
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211 | MetaSolverOrchestrationPort.SendMessage(metaMsg);
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212 | }
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213 |
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214 | public override void Start() {
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215 | cts = new CancellationTokenSource();
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216 |
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217 | try {
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218 | var metaMsg = MetaSolverOrchestrationPort.PrepareMessage();
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219 | metaMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Start);
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220 | MetaSolverOrchestrationPort.SendMessage(metaMsg);
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221 | } catch (Exception e) { }
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222 | }
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223 |
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224 | public override void Pause() {
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225 | cts.Cancel();
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226 |
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227 | var metaMsg = MetaSolverOrchestrationPort.PrepareMessage();
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228 | metaMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Pause);
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229 | MetaSolverOrchestrationPort.SendMessage(metaMsg);
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230 |
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231 | var tspMsg = TspSolverOrchestrationPort.PrepareMessage();
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232 | tspMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Stop);
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233 | TspSolverOrchestrationPort.SendMessage(tspMsg);
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234 |
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235 | var kspMsg = KspSolverOrchestrationPort.PrepareMessage();
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236 | kspMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Stop);
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237 | KspSolverOrchestrationPort.SendMessage(kspMsg);
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238 | }
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239 |
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240 | public override void Stop() {
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241 | cts.Cancel();
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242 |
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243 | var metaMsg = MetaSolverOrchestrationPort.PrepareMessage();
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244 | metaMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Stop);
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245 | MetaSolverOrchestrationPort.SendMessage(metaMsg);
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246 |
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247 | var tspMsg = TspSolverOrchestrationPort.PrepareMessage();
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248 | tspMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Stop);
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249 | TspSolverOrchestrationPort.SendMessage(tspMsg);
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250 |
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251 | var kspMsg = KspSolverOrchestrationPort.PrepareMessage();
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252 | kspMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Stop);
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253 | KspSolverOrchestrationPort.SendMessage(kspMsg);
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254 | }
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255 |
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256 | protected override void ProcessMessage(IMessage message, IMessagePort port, CancellationToken token) {
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257 | var messageActions = new Dictionary<IMessagePort, Action<IMessage>>();
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258 | messageActions.Add(MetaSolverOrchestrationPort, MetaSolverOrchestrationPortMessage);
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259 | messageActions.Add(MetaSolverEvaluationPort, MetaSolverEvaluationPortMessage);
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260 | messageActions.Add(TspSolverOrchestrationPort, TspSolverOrchestrationPortMessage);
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261 | messageActions.Add(TspSolverEvaluationPort, TspSolverEvaluationPortMessage);
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262 | messageActions.Add(KspSolverOrchestrationPort, KspSolverOrchestrationPortMessage);
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263 | messageActions.Add(KspSolverEvaluationPort, KspSolverEvaluationPortMessage);
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264 |
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265 | messageActions[port](message);
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266 |
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267 | base.ProcessMessage(message, port, token);
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268 | }
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269 |
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270 | #region MetaSolver Message Handling
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271 | private void MetaSolverOrchestrationPortMessage(IMessage message) { }
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272 |
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273 | private void MetaSolverEvaluationPortMessage(IMessage message) {
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274 | var factors = (RealVector)message["RealVector"];
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275 | int fi = 0;
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276 |
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277 | var ksp = (BinaryKnapsackProblem)KspParameter.Value.Clone();
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278 | while (fi < ksp.Values.Length) {
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279 | ksp.Values[fi] = (int)Math.Ceiling(ksp.Values[fi] * factors[fi]);
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280 | ++fi;
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281 | }
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282 |
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283 | var kspMsg = KspSolverOrchestrationPort.PrepareMessage();
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284 | kspMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Prepare | OrchestrationMessage.Start);
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285 | kspMsg["Problem"] = ksp;
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286 | KspSolverOrchestrationPort.SendMessage(kspMsg);
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287 | cts.Token.ThrowIfCancellationRequested();
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288 |
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289 | var bestKspSolution = (BinaryVector)kspResults["Best Solution"].Value.Clone();
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290 | var kspCapacity = (IntValue)KspParameter.Value.KnapsackCapacity.Clone();
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291 | var kspPenalty = new DoubleValue(0.0);
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292 | var kspWeights = (IntArray)KspParameter.Value.Weights.Clone();
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293 | var kspValues = (IntArray)KspParameter.Value.Values.Clone();
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294 | var bestKspQuality = KnapsackEvaluator.Apply(bestKspSolution, kspCapacity, kspPenalty, kspWeights, kspValues).Quality;
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295 | var loot = new KnapsackSolution(bestKspSolution, bestKspQuality, kspCapacity, kspWeights, kspValues);
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296 |
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297 | var tsp = (TravelingSalesmanProblem)TspParameter.Value.Clone();
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298 | for (int j = 0; j < tsp.Coordinates.Rows; j++) {
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299 | tsp.Coordinates[j, 0] = (int)Math.Ceiling(tsp.Coordinates[j, 0] * factors[fi + j * 2]);
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300 | tsp.Coordinates[j, 1] = (int)Math.Ceiling(tsp.Coordinates[j, 1] * factors[fi + j * 2 + 1]);
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301 | }
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302 |
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303 | var tspMsg = TspSolverOrchestrationPort.PrepareMessage();
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304 | tspMsg["OrchestrationMessage"] = new EnumValue<OrchestrationMessage>(OrchestrationMessage.Prepare | OrchestrationMessage.Start);
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305 | var tpp = new TourProfitProblem {
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306 | Tsp = (TravelingSalesmanProblem)TspParameter.Value.Clone(),
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307 | Ksp = (BinaryKnapsackProblem)KspParameter.Value.Clone(),
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308 | FixedKspSolution = bestKspSolution,
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309 | Availability = AvailabilityParameter.Value.ToArray(),
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310 | RentingRatio = RentingRatioParameter.Value.Value,
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311 | MinSpeed = MinSpeedParameter.Value.Value,
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312 | MaxSpeed = MaxSpeedParameter.Value.Value,
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313 | DistanceType = distanceType
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314 | };
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315 | tpp.Encoding.Length = TspParameter.Value.Coordinates.Rows;
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316 | tspMsg["Problem"] = tpp;
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317 | TspSolverOrchestrationPort.SendMessage(tspMsg);
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318 | cts.Token.ThrowIfCancellationRequested();
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319 |
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320 | var bestTspSolution = (Permutation)tspResults["Best TSP Solution"].Value.Clone();
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321 | var coordinates = (DoubleMatrix)TspParameter.Value.Coordinates.Clone();
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322 | var tour = new PathTSPTour(coordinates, bestTspSolution, new DoubleValue(TSPCoordinatesPathEvaluator.Apply(new TSPEuclideanPathEvaluator(), coordinates, bestTspSolution)));
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323 |
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324 | #region Analyze
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325 | double objectiveValue = TtpUtils.Evaluate(TspParameter.Value, tour.Permutation.ToArray(), KspParameter.Value, loot.BinaryVector.ToArray(),
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326 | AvailabilityParameter.Value.ToArray(), RentingRatioParameter.Value.Value, MinSpeedParameter.Value.Value, MaxSpeedParameter.Value.Value, distanceType);
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327 | ((DoubleValue)message["Quality"]).Value = objectiveValue;
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328 |
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329 | IResult bestQuality;
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330 | if (!Results.TryGetValue("Best TTP Quality", out bestQuality)) {
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331 | Results.Add(new Result("Best TTP Quality", new DoubleValue(objectiveValue)));
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332 | Results.Add(new Result("Best Tour", tour));
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333 | Results.Add(new Result("Best Loot", loot));
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334 | } else if (((DoubleValue)bestQuality.Value).Value < objectiveValue) {
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335 | ((DoubleValue)bestQuality.Value).Value = objectiveValue;
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336 | Results["Best Tour"].Value = tour;
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337 | Results["Best Loot"].Value = loot;
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338 | }
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339 | #endregion
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340 | }
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341 | #endregion
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342 |
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343 | #region TspSolver Message Handling
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344 | private void TspSolverOrchestrationPortMessage(IMessage message) {
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345 | var results = (ResultCollection)message["Results"];
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346 | if (results.ContainsKey("Best TSP Solution")) {
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347 | tspResults = results;
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348 | }
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349 | }
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350 |
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351 | private void TspSolverEvaluationPortMessage(IMessage message) { }
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352 | #endregion
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353 |
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354 | #region KspSolver Message Handling
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355 | private void KspSolverOrchestrationPortMessage(IMessage message) {
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356 | var results = (ResultCollection)message["Results"];
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357 | if (results.ContainsKey("Best Solution")) {
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358 | kspResults = results;
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359 | }
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360 | }
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361 |
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362 | private void KspSolverEvaluationPortMessage(IMessage message) { }
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363 | #endregion
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364 |
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365 | #region Event Handlers
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366 | private void MetaSolverOrchestrationPort_ConnectedPortChanged(object sender, EventArgs e) {
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367 | if (MetaSolverOrchestrationPort.ConnectedPort == null) return;
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368 |
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369 | var node = MetaSolverOrchestrationPort.ConnectedPort.Parent as OrchestratedAlgorithmNode;
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370 | if (node == null) return;
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371 |
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372 | var hook = new HookOperator { Name = "Meta Eval Hook" };
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373 | hook.Parameters.Add(new LookupParameter<RealVector>("RealVector") { Hidden = true });
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374 | hook.Parameters.Add(new LookupParameter<DoubleValue>("Quality") { Hidden = true });
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375 | node.EvalHook = hook;
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376 |
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377 | node.OrchestrationPort.CloneParametersFromPort(MetaSolverOrchestrationPort);
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378 | node.EvaluationPort.CloneParametersFromPort(MetaSolverEvaluationPort);
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379 | node.EvaluationPort.ConnectedPort = MetaSolverEvaluationPort;
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380 | }
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381 |
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382 | private void TspSolverOrchestrationPort_ConnectedPortChanged(object sender, EventArgs e) {
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383 | if (TspSolverOrchestrationPort.ConnectedPort == null) return;
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384 |
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385 | var node = TspSolverOrchestrationPort.ConnectedPort.Parent as OrchestratedAlgorithmNode;
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386 | if (node == null) return;
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387 |
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388 | var hook = new HookOperator { Name = "TSP Eval Hook" };
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389 | hook.Parameters.Add(new LookupParameter<Permutation>("TSPTour") { Hidden = true });
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390 | hook.Parameters.Add(new LookupParameter<DoubleValue>("TSPTourLength") { Hidden = true });
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391 | node.EvalHook = hook;
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392 |
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393 | node.OrchestrationPort.CloneParametersFromPort(TspSolverOrchestrationPort);
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394 | node.EvaluationPort.CloneParametersFromPort(TspSolverEvaluationPort);
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395 | node.EvaluationPort.ConnectedPort = TspSolverEvaluationPort;
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396 | }
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397 |
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398 | private void KspSolverOrchestrationPort_ConnectedPortChanged(object sender, EventArgs e) {
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399 | if (KspSolverOrchestrationPort.ConnectedPort == null) return;
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400 |
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401 | var node = KspSolverOrchestrationPort.ConnectedPort.Parent as OrchestratedAlgorithmNode;
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402 | if (node == null) return;
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403 |
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404 | var hook = new HookOperator { Name = "KSP Eval Hook" };
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405 | hook.Parameters.Add(new LookupParameter<BinaryVector>("KnapsackSolution") { Hidden = true });
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406 | hook.Parameters.Add(new LookupParameter<DoubleValue>("Quality") { Hidden = true });
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407 | node.EvalHook = hook;
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408 |
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409 | node.OrchestrationPort.CloneParametersFromPort(KspSolverOrchestrationPort);
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410 | node.EvaluationPort.CloneParametersFromPort(KspSolverEvaluationPort);
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411 | node.EvaluationPort.ConnectedPort = KspSolverEvaluationPort;
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412 | }
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413 | #endregion
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414 | }
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415 | }
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