1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2008 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;
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26 | using HeuristicLab.Core;
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27 | using System.Xml;
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28 | using System.Diagnostics;
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29 | using HeuristicLab.DataAnalysis;
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30 | using HeuristicLab.Operators;
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31 | using HeuristicLab.Random;
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32 | using HeuristicLab.Selection;
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33 | using HeuristicLab.Logging;
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34 | using HeuristicLab.Data;
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35 | using HeuristicLab.Operators.Programmable;
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36 | using HeuristicLab.Evolutionary;
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37 | using HeuristicLab.Modeling;
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38 |
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39 | namespace HeuristicLab.GP.StructureIdentification {
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40 | public abstract class AlgorithmBase : ItemBase, IAlgorithm, IStochasticAlgorithm {
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41 | public virtual string Name { get { return "GP"; } }
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42 | public virtual string Description { get { return "TODO"; } }
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43 |
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44 | public virtual double MutationRate {
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45 | get { return GetVariableInjector().GetVariable("MutationRate").GetValue<DoubleData>().Data; }
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46 | set { GetVariableInjector().GetVariable("MutationRate").GetValue<DoubleData>().Data = value; }
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47 | }
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48 | public virtual int PopulationSize {
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49 | get { return GetVariableInjector().GetVariable("PopulationSize").GetValue<IntData>().Data; }
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50 | set { GetVariableInjector().GetVariable("PopulationSize").GetValue<IntData>().Data = value; }
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51 | }
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52 |
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53 | public virtual bool SetSeedRandomly {
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54 | get { return GetRandomInjector().GetVariable("SetSeedRandomly").GetValue<BoolData>().Data; }
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55 | set { GetRandomInjector().GetVariable("SetSeedRandomly").GetValue<BoolData>().Data = value; }
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56 | }
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57 |
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58 | public virtual int RandomSeed {
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59 | get { return GetRandomInjector().GetVariable("Seed").GetValue<IntData>().Data; }
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60 | set { GetRandomInjector().GetVariable("Seed").GetValue<IntData>().Data = value; }
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61 | }
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62 |
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63 | public virtual IOperator ProblemInjector {
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64 | get { return algorithm.SubOperators[0]; }
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65 | set {
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66 | value.Name = "ProblemInjector";
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67 | algorithm.RemoveSubOperator(0);
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68 | algorithm.AddSubOperator(value, 0);
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69 | }
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70 | }
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71 |
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72 | public virtual int Elites {
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73 | get { return GetVariableInjector().GetVariable("Elites").GetValue<IntData>().Data; }
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74 | set { GetVariableInjector().GetVariable("Elites").GetValue<IntData>().Data = value; }
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75 | }
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76 |
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77 | public virtual int MaxTreeSize {
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78 | get { return GetVariableInjector().GetVariable("MaxTreeSize").GetValue<IntData>().Data; }
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79 | set { GetVariableInjector().GetVariable("MaxTreeSize").GetValue<IntData>().Data = value; }
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80 | }
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81 |
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82 | public virtual int MaxTreeHeight {
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83 | get { return GetVariableInjector().GetVariable("MaxTreeHeight").GetValue<IntData>().Data; }
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84 | set { GetVariableInjector().GetVariable("MaxTreeHeight").GetValue<IntData>().Data = value; }
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85 | }
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86 |
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87 | public virtual int Parents {
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88 | get { return GetVariableInjector().GetVariable("Parents").GetValue<IntData>().Data; }
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89 | set { GetVariableInjector().GetVariable("Parents").GetValue<IntData>().Data = value; }
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90 | }
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91 |
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92 | public virtual double PunishmentFactor {
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93 | get { return GetVariableInjector().GetVariable("PunishmentFactor").GetValue<DoubleData>().Data; }
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94 | set { GetVariableInjector().GetVariable("PunishmentFactor").GetValue<DoubleData>().Data = value; }
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95 | }
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96 |
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97 | public virtual bool UseEstimatedTargetValue {
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98 | get { return GetVariableInjector().GetVariable("UseEstimatedTargetValue").GetValue<BoolData>().Data; }
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99 | set { GetVariableInjector().GetVariable("UseEstimatedTargetValue").GetValue<BoolData>().Data = value; }
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100 | }
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101 |
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102 | private IOperator algorithm;
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103 |
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104 | private SequentialEngine.SequentialEngine engine;
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105 | public IEngine Engine {
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106 | get { return engine; }
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107 | protected set { engine = (SequentialEngine.SequentialEngine)value; }
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108 | }
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109 |
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110 | public AlgorithmBase() {
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111 | engine = new SequentialEngine.SequentialEngine();
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112 | CombinedOperator algo = CreateAlgorithm();
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113 | engine.OperatorGraph.AddOperator(algo);
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114 | engine.OperatorGraph.InitialOperator = algo;
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115 | SetSeedRandomly = true;
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116 | Elites = 1;
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117 | MutationRate = 0.15;
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118 | PopulationSize = 1000;
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119 | MaxTreeSize = 100;
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120 | MaxTreeHeight = 10;
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121 | Parents = 2000;
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122 | PunishmentFactor = 10;
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123 | UseEstimatedTargetValue = false;
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124 | }
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125 |
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126 | protected internal virtual CombinedOperator CreateAlgorithm() {
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127 | CombinedOperator algo = new CombinedOperator();
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128 | algo.Name = "GP";
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129 | SequentialProcessor seq = new SequentialProcessor();
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130 | IOperator problemInjector = CreateProblemInjector();
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131 |
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132 | RandomInjector randomInjector = new RandomInjector();
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133 | randomInjector.Name = "Random Injector";
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134 |
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135 | IOperator globalInjector = CreateGlobalInjector();
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136 | IOperator initialization = CreateInitialization();
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137 | IOperator funLibInjector = CreateFunctionLibraryInjector();
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138 | IOperator treeEvaluatorInjector = new HL2TreeEvaluatorInjector();
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139 |
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140 | IOperator mainLoop = CreateMainLoop();
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141 | mainLoop.Name = "Main loop";
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142 |
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143 | IOperator treeCreator = CreateTreeCreator();
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144 |
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145 | MeanSquaredErrorEvaluator evaluator = new MeanSquaredErrorEvaluator();
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146 | evaluator.GetVariableInfo("MSE").ActualName = "Quality";
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147 | evaluator.GetVariableInfo("SamplesStart").ActualName = "TrainingSamplesStart";
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148 | evaluator.GetVariableInfo("SamplesEnd").ActualName = "TrainingSamplesEnd";
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149 | evaluator.Name = "Evaluator";
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150 |
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151 | IOperator crossover = CreateCrossover();
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152 | IOperator manipulator = CreateManipulator();
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153 |
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154 | IOperator selector = CreateSelector();
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155 | LeftReducer cleanUp = new LeftReducer();
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156 |
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157 | seq.AddSubOperator(problemInjector);
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158 | seq.AddSubOperator(randomInjector);
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159 | seq.AddSubOperator(globalInjector);
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160 | seq.AddSubOperator(funLibInjector);
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161 | seq.AddSubOperator(treeEvaluatorInjector);
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162 | seq.AddSubOperator(initialization);
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163 | seq.AddSubOperator(mainLoop);
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164 | seq.AddSubOperator(cleanUp);
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165 |
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166 | initialization.AddSubOperator(treeCreator);
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167 | initialization.AddSubOperator(evaluator);
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168 |
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169 | mainLoop.AddSubOperator(selector);
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170 | mainLoop.AddSubOperator(crossover);
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171 | mainLoop.AddSubOperator(manipulator);
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172 | mainLoop.AddSubOperator(evaluator);
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173 | algo.OperatorGraph.AddOperator(seq);
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174 | algo.OperatorGraph.InitialOperator = seq;
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175 | this.algorithm = seq;
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176 | return algo;
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177 | }
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178 |
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179 | protected internal virtual IOperator CreateProblemInjector() {
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180 | return new EmptyOperator();
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181 | }
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182 |
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183 | protected internal abstract IOperator CreateSelector();
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184 |
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185 | protected internal abstract IOperator CreateCrossover();
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186 |
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187 | protected internal abstract IOperator CreateTreeCreator();
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188 |
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189 | protected internal abstract IOperator CreateFunctionLibraryInjector();
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190 |
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191 | protected internal virtual IOperator CreateGlobalInjector() {
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192 | VariableInjector injector = new VariableInjector();
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193 | injector.Name = "Global Injector";
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194 | injector.AddVariable(new HeuristicLab.Core.Variable("Generations", new IntData(0)));
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195 | injector.AddVariable(new HeuristicLab.Core.Variable("MutationRate", new DoubleData()));
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196 | injector.AddVariable(new HeuristicLab.Core.Variable("PopulationSize", new IntData()));
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197 | injector.AddVariable(new HeuristicLab.Core.Variable("Elites", new IntData()));
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198 | injector.AddVariable(new HeuristicLab.Core.Variable("Maximization", new BoolData(false)));
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199 | injector.AddVariable(new HeuristicLab.Core.Variable("MaxTreeHeight", new IntData()));
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200 | injector.AddVariable(new HeuristicLab.Core.Variable("MaxTreeSize", new IntData()));
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201 | injector.AddVariable(new HeuristicLab.Core.Variable("EvaluatedSolutions", new IntData(0)));
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202 | injector.AddVariable(new HeuristicLab.Core.Variable("TotalEvaluatedNodes", new DoubleData(0)));
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203 | injector.AddVariable(new HeuristicLab.Core.Variable("Parents", new IntData()));
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204 | injector.AddVariable(new HeuristicLab.Core.Variable("PunishmentFactor", new DoubleData()));
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205 | injector.AddVariable(new HeuristicLab.Core.Variable("UseEstimatedTargetValue", new BoolData()));
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206 | return injector;
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207 | }
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208 |
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209 | protected internal abstract IOperator CreateManipulator();
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210 |
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211 | protected internal virtual IOperator CreateInitialization() {
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212 | CombinedOperator init = new CombinedOperator();
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213 | init.Name = "Initialization";
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214 | SequentialProcessor seq = new SequentialProcessor();
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215 | SubScopesCreater subScopesCreater = new SubScopesCreater();
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216 | subScopesCreater.GetVariableInfo("SubScopes").ActualName = "PopulationSize";
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217 | UniformSequentialSubScopesProcessor subScopesProc = new UniformSequentialSubScopesProcessor();
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218 | SequentialProcessor individualSeq = new SequentialProcessor();
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219 | OperatorExtractor treeCreater = new OperatorExtractor();
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220 | treeCreater.Name = "Tree generator (extr.)";
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221 | treeCreater.GetVariableInfo("Operator").ActualName = "Tree generator";
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222 | OperatorExtractor evaluator = new OperatorExtractor();
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223 | evaluator.Name = "Evaluator (extr.)";
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224 | evaluator.GetVariableInfo("Operator").ActualName = "Evaluator";
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225 | MeanSquaredErrorEvaluator validationEvaluator = new MeanSquaredErrorEvaluator();
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226 | validationEvaluator.GetVariableInfo("MSE").ActualName = "ValidationQuality";
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227 | validationEvaluator.GetVariableInfo("SamplesStart").ActualName = "ValidationSamplesStart";
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228 | validationEvaluator.GetVariableInfo("SamplesEnd").ActualName = "ValidationSamplesEnd";
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229 | Counter evalCounter = new Counter();
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230 | evalCounter.GetVariableInfo("Value").ActualName = "EvaluatedSolutions";
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231 | Sorter sorter = new Sorter();
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232 | sorter.GetVariableInfo("Descending").ActualName = "Maximization";
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233 | sorter.GetVariableInfo("Value").ActualName = "Quality";
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234 |
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235 | seq.AddSubOperator(subScopesCreater);
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236 | seq.AddSubOperator(subScopesProc);
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237 | seq.AddSubOperator(sorter);
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238 |
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239 | subScopesProc.AddSubOperator(individualSeq);
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240 | individualSeq.AddSubOperator(treeCreater);
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241 | individualSeq.AddSubOperator(evaluator);
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242 | individualSeq.AddSubOperator(validationEvaluator);
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243 | individualSeq.AddSubOperator(evalCounter);
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244 |
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245 | init.OperatorGraph.AddOperator(seq);
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246 | init.OperatorGraph.InitialOperator = seq;
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247 | return init;
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248 | }
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249 |
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250 | protected internal virtual IOperator CreateMainLoop() {
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251 | CombinedOperator main = new CombinedOperator();
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252 | SequentialProcessor seq = new SequentialProcessor();
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253 | IOperator childCreater = CreateChildCreater();
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254 | IOperator replacement = CreateReplacement();
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255 |
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256 | BestSolutionStorer solutionStorer = new BestSolutionStorer();
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257 | solutionStorer.GetVariableInfo("Quality").ActualName = "ValidationQuality";
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258 | solutionStorer.GetVariableInfo("BestSolution").ActualName = "BestValidationSolution";
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259 | solutionStorer.AddSubOperator(CreateBestSolutionProcessor());
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260 |
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261 | BestAverageWorstQualityCalculator qualityCalculator = new BestAverageWorstQualityCalculator();
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262 | BestAverageWorstQualityCalculator validationQualityCalculator = new BestAverageWorstQualityCalculator();
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263 | validationQualityCalculator.Name = "BestAverageWorstValidationQualityCalculator";
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264 | validationQualityCalculator.GetVariableInfo("Quality").ActualName = "ValidationQuality";
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265 | validationQualityCalculator.GetVariableInfo("BestQuality").ActualName = "BestValidationQuality";
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266 | validationQualityCalculator.GetVariableInfo("AverageQuality").ActualName = "AverageValidationQuality";
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267 | validationQualityCalculator.GetVariableInfo("WorstQuality").ActualName = "WorstValidationQuality";
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268 | IOperator loggingOperator = CreateLoggingOperator();
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269 | Counter counter = new Counter();
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270 | counter.GetVariableInfo("Value").ActualName = "Generations";
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271 | IOperator loopCondition = CreateLoopCondition(seq);
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272 |
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273 | seq.AddSubOperator(childCreater);
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274 | seq.AddSubOperator(replacement);
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275 | seq.AddSubOperator(solutionStorer);
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276 | seq.AddSubOperator(qualityCalculator);
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277 | seq.AddSubOperator(validationQualityCalculator);
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278 | seq.AddSubOperator(loggingOperator);
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279 | seq.AddSubOperator(counter);
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280 | seq.AddSubOperator(loopCondition);
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281 |
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282 | main.OperatorGraph.AddOperator(seq);
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283 | main.OperatorGraph.InitialOperator = seq;
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284 | return main;
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285 | }
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286 |
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287 | protected internal virtual IOperator CreateLoggingOperator() {
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288 | return new EmptyOperator();
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289 | }
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290 |
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291 | protected internal virtual IOperator CreateLoopCondition(IOperator loop) {
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292 | SequentialProcessor seq = new SequentialProcessor();
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293 | seq.Name = "Loop Condition";
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294 | LessThanComparator comparator = new LessThanComparator();
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295 | comparator.GetVariableInfo("LeftSide").ActualName = "Generations";
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296 | comparator.GetVariableInfo("RightSide").ActualName = "MaxGenerations";
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297 | comparator.GetVariableInfo("Result").ActualName = "GenerationsCondition";
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298 | ConditionalBranch cond = new ConditionalBranch();
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299 | cond.GetVariableInfo("Condition").ActualName = "GenerationsCondition";
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300 |
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301 | seq.AddSubOperator(comparator);
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302 | seq.AddSubOperator(cond);
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303 |
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304 | cond.AddSubOperator(loop);
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305 | return seq;
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306 | }
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307 |
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308 | protected internal virtual IOperator CreateBestSolutionProcessor() {
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309 | return new EmptyOperator();
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310 | }
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311 |
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312 | protected internal virtual IOperator CreateReplacement() {
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313 | CombinedOperator replacement = new CombinedOperator();
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314 | replacement.Name = "Replacement";
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315 | SequentialProcessor seq = new SequentialProcessor();
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316 | SequentialSubScopesProcessor seqScopeProc = new SequentialSubScopesProcessor();
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317 | SequentialProcessor selectedProc = new SequentialProcessor();
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318 | LeftSelector leftSelector = new LeftSelector();
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319 | leftSelector.GetVariableInfo("Selected").ActualName = "Elites";
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320 | RightReducer rightReducer = new RightReducer();
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321 |
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322 | SequentialProcessor remainingProc = new SequentialProcessor();
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323 | RightSelector rightSelector = new RightSelector();
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324 | rightSelector.GetVariableInfo("Selected").ActualName = "Elites";
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325 | LeftReducer leftReducer = new LeftReducer();
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326 | MergingReducer mergingReducer = new MergingReducer();
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327 | Sorter sorter = new Sorter();
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328 | sorter.GetVariableInfo("Descending").ActualName = "Maximization";
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329 | sorter.GetVariableInfo("Value").ActualName = "Quality";
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330 |
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331 | seq.AddSubOperator(seqScopeProc);
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332 | seqScopeProc.AddSubOperator(selectedProc);
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333 | selectedProc.AddSubOperator(leftSelector);
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334 | selectedProc.AddSubOperator(rightReducer);
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335 |
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336 | seqScopeProc.AddSubOperator(remainingProc);
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337 | remainingProc.AddSubOperator(rightSelector);
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338 | remainingProc.AddSubOperator(leftReducer);
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339 | seq.AddSubOperator(mergingReducer);
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340 | seq.AddSubOperator(sorter);
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341 | replacement.OperatorGraph.AddOperator(seq);
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342 | replacement.OperatorGraph.InitialOperator = seq;
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343 | return replacement;
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344 | }
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345 |
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346 | protected internal virtual IOperator CreateChildCreater() {
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347 | CombinedOperator childCreater = new CombinedOperator();
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348 | childCreater.Name = "Create children";
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349 | SequentialProcessor seq = new SequentialProcessor();
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350 | OperatorExtractor selector = new OperatorExtractor();
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351 | selector.Name = "Selector (extr.)";
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352 | selector.GetVariableInfo("Operator").ActualName = "Selector";
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353 |
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354 | SequentialSubScopesProcessor seqScopesProc = new SequentialSubScopesProcessor();
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355 | EmptyOperator emptyOpt = new EmptyOperator();
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356 | SequentialProcessor selectedProc = new SequentialProcessor();
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357 | ChildrenInitializer childInitializer = new ChildrenInitializer();
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358 | ((IntData)childInitializer.GetVariable("ParentsPerChild").Value).Data = 2;
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359 |
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360 | OperatorExtractor crossover = new OperatorExtractor();
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361 | crossover.Name = "Crossover (extr.)";
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362 | crossover.GetVariableInfo("Operator").ActualName = "Crossover";
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363 | UniformSequentialSubScopesProcessor individualProc = new UniformSequentialSubScopesProcessor();
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364 | SequentialProcessor individualSeqProc = new SequentialProcessor();
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365 | StochasticBranch cond = new StochasticBranch();
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366 | cond.GetVariableInfo("Probability").ActualName = "MutationRate";
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367 | OperatorExtractor manipulator = new OperatorExtractor();
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368 | manipulator.Name = "Manipulator (extr.)";
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369 | manipulator.GetVariableInfo("Operator").ActualName = "Manipulator";
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370 | OperatorExtractor evaluator = new OperatorExtractor();
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371 | evaluator.Name = "Evaluator (extr.)";
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372 | evaluator.GetVariableInfo("Operator").ActualName = "Evaluator";
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373 | MeanSquaredErrorEvaluator validationEvaluator = new MeanSquaredErrorEvaluator();
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374 | validationEvaluator.GetVariableInfo("MSE").ActualName = "ValidationQuality";
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375 | validationEvaluator.GetVariableInfo("SamplesStart").ActualName = "ValidationSamplesStart";
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376 | validationEvaluator.GetVariableInfo("SamplesEnd").ActualName = "ValidationSamplesEnd";
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377 | Counter evalCounter = new Counter();
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378 | evalCounter.GetVariableInfo("Value").ActualName = "EvaluatedSolutions";
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379 | SubScopesRemover parentRefRemover = new SubScopesRemover();
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380 |
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381 | Sorter sorter = new Sorter();
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382 | sorter.GetVariableInfo("Descending").ActualName = "Maximization";
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383 | sorter.GetVariableInfo("Value").ActualName = "Quality";
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384 |
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385 |
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386 | seq.AddSubOperator(selector);
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387 | seq.AddSubOperator(seqScopesProc);
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388 | seqScopesProc.AddSubOperator(emptyOpt);
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389 | seqScopesProc.AddSubOperator(selectedProc);
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390 | selectedProc.AddSubOperator(childInitializer);
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391 | selectedProc.AddSubOperator(individualProc);
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392 | individualProc.AddSubOperator(individualSeqProc);
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393 | individualSeqProc.AddSubOperator(crossover);
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394 | individualSeqProc.AddSubOperator(cond);
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395 | cond.AddSubOperator(manipulator);
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396 | individualSeqProc.AddSubOperator(evaluator);
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397 | individualSeqProc.AddSubOperator(validationEvaluator);
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398 | individualSeqProc.AddSubOperator(evalCounter);
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399 | individualSeqProc.AddSubOperator(parentRefRemover);
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400 | selectedProc.AddSubOperator(sorter);
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401 |
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402 | childCreater.OperatorGraph.AddOperator(seq);
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403 | childCreater.OperatorGraph.InitialOperator = seq;
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404 | return childCreater;
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405 | }
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406 |
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407 | public override object Clone(IDictionary<Guid, object> clonedObjects) {
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408 | AlgorithmBase clone = (AlgorithmBase)base.Clone(clonedObjects);
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409 | clonedObjects.Add(Guid, clone);
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410 | clone.engine = (SequentialEngine.SequentialEngine)Auxiliary.Clone(Engine, clonedObjects);
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411 | return clone;
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412 | }
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413 |
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414 | protected VariableInjector GetVariableInjector() {
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415 | CombinedOperator co1 = (CombinedOperator)Engine.OperatorGraph.InitialOperator;
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416 | // SequentialProcessor in GP
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417 | algorithm = (SequentialProcessor)co1.OperatorGraph.InitialOperator;
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418 | return (VariableInjector)algorithm.SubOperators[2];
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419 | }
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420 |
|
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421 | protected RandomInjector GetRandomInjector() {
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422 | CombinedOperator co1 = (CombinedOperator)Engine.OperatorGraph.InitialOperator;
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423 | // SequentialProcessor in GP
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424 | algorithm = (SequentialProcessor)co1.OperatorGraph.InitialOperator;
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425 | return (RandomInjector)algorithm.SubOperators[1];
|
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426 | }
|
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427 |
|
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428 | #region Persistence Methods
|
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429 | public override XmlNode GetXmlNode(string name, XmlDocument document, IDictionary<Guid, IStorable> persistedObjects) {
|
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430 | XmlNode node = base.GetXmlNode(name, document, persistedObjects);
|
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431 | node.AppendChild(PersistenceManager.Persist("Engine", Engine, document, persistedObjects));
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432 | return node;
|
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433 | }
|
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434 | public override void Populate(XmlNode node, IDictionary<Guid, IStorable> restoredObjects) {
|
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435 | base.Populate(node, restoredObjects);
|
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436 | engine = (SequentialEngine.SequentialEngine)PersistenceManager.Restore(node.SelectSingleNode("Engine"), restoredObjects);
|
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437 | }
|
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438 | #endregion
|
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439 |
|
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440 | }
|
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441 | }
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