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 HeuristicLab.Core;
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23 | using HeuristicLab.DataAnalysis;
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24 | using HeuristicLab.Operators;
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25 | using HeuristicLab.Selection;
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26 | using HeuristicLab.Logging;
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27 | using HeuristicLab.Data;
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28 | using HeuristicLab.Operators.Programmable;
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29 | using HeuristicLab.Modeling;
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30 | using HeuristicLab.GP.Operators;
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31 |
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32 | namespace HeuristicLab.GP.StructureIdentification {
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33 | public class StandardGP : AlgorithmBase, IEditable {
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34 |
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35 | public override string Name { get { return "StandardGP"; } }
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36 |
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37 | public override int TargetVariable {
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38 | get { return ProblemInjector.GetVariableValue<IntData>("TargetVariable", null, false).Data; }
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39 | set { ProblemInjector.GetVariableValue<IntData>("TargetVariable", null, false).Data = value; }
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40 | }
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41 |
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42 | public override Dataset Dataset {
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43 | get { return ProblemInjector.GetVariableValue<Dataset>("Dataset", null, false); }
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44 | set { ProblemInjector.GetVariable("Dataset").Value = value; }
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45 | }
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46 |
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47 | public virtual int MaxGenerations {
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48 | get { return GetVariableInjector().GetVariable("MaxGenerations").GetValue<IntData>().Data; }
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49 | set { GetVariableInjector().GetVariable("MaxGenerations").GetValue<IntData>().Data = value; }
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50 | }
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51 |
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52 | public virtual int TournamentSize {
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53 | get { return GetVariableInjector().GetVariable("TournamentSize").GetValue<IntData>().Data; }
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54 | set { GetVariableInjector().GetVariable("TournamentSize").GetValue<IntData>().Data = value; }
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55 | }
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56 |
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57 | public double FullTreeShakingFactor {
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58 | get { return GetVariableInjector().GetVariable("FullTreeShakingFactor").GetValue<DoubleData>().Data; }
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59 | set { GetVariableInjector().GetVariable("FullTreeShakingFactor").GetValue<DoubleData>().Data = value; }
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60 | }
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61 |
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62 | public double OnePointShakingFactor {
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63 | get { return GetVariableInjector().GetVariable("OnePointShakingFactor").GetValue<DoubleData>().Data; }
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64 | set { GetVariableInjector().GetVariable("OnePointShakingFactor").GetValue<DoubleData>().Data = value; }
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65 | }
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66 |
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67 | public int MinInitialTreeSize {
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68 | get { return GetVariableInjector().GetVariable("MinInitialTreeSize").GetValue<IntData>().Data; }
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69 | set { GetVariableInjector().GetVariable("MinInitialTreeSize").GetValue<IntData>().Data = value; }
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70 | }
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71 |
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72 | public override int MaxTreeSize {
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73 | get {
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74 | return base.MaxTreeSize;
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75 | }
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76 | set {
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77 | base.MaxTreeSize = value;
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78 | MinInitialTreeSize = value / 2;
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79 | }
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80 | }
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81 |
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82 | public override int PopulationSize {
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83 | get {
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84 | return base.PopulationSize;
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85 | }
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86 | set {
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87 | base.PopulationSize = value;
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88 | Parents = 2 * value;
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89 | }
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90 | }
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91 |
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92 | public override IOperator ProblemInjector {
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93 | get { return base.ProblemInjector.SubOperators[0]; }
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94 | set {
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95 | value.Name = "ProblemInjector";
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96 | base.ProblemInjector.RemoveSubOperator(0);
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97 | base.ProblemInjector.AddSubOperator(value, 0);
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98 | }
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99 | }
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100 |
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101 | public StandardGP()
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102 | : base() {
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103 | PopulationSize = 10000;
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104 | MaxGenerations = 500;
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105 | TournamentSize = 7;
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106 | MutationRate = 0.15;
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107 | Elites = 1;
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108 | MaxTreeSize = 100;
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109 | MaxTreeHeight = 10;
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110 | FullTreeShakingFactor = 0.1;
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111 | OnePointShakingFactor = 1.0;
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112 | UseEstimatedTargetValue = false;
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113 | SetSeedRandomly = true;
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114 | }
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115 |
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116 | protected internal override IOperator CreateProblemInjector() {
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117 | SequentialProcessor seq = new SequentialProcessor();
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118 | var probInject = new ProblemInjector();
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119 | probInject.GetVariableInfo("MaxNumberOfTrainingSamples").Local = true;
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120 | probInject.AddVariable(new HeuristicLab.Core.Variable("MaxNumberOfTrainingSamples", new IntData(5000)));
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121 |
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122 | var shuffler = new DatasetShuffler();
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123 | shuffler.GetVariableInfo("ShuffleStart").ActualName = "TrainingSamplesStart";
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124 | shuffler.GetVariableInfo("ShuffleEnd").ActualName = "TrainingSamplesEnd";
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125 |
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126 | seq.AddSubOperator(probInject);
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127 | seq.AddSubOperator(shuffler);
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128 | return seq;
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129 | }
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130 |
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131 | protected internal override IOperator CreateSelector() {
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132 | TournamentSelector selector = new TournamentSelector();
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133 | selector.Name = "Selector";
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134 | selector.GetVariableInfo("Selected").ActualName = "Parents";
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135 | selector.GetVariableInfo("GroupSize").Local = false;
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136 | selector.RemoveVariable("GroupSize");
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137 | selector.GetVariableInfo("GroupSize").ActualName = "TournamentSize";
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138 | return selector;
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139 | }
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140 |
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141 | protected internal override IOperator CreateGlobalInjector() {
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142 | VariableInjector globalInjector = (VariableInjector)base.CreateGlobalInjector();
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143 | globalInjector.AddVariable(new HeuristicLab.Core.Variable("TournamentSize", new IntData()));
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144 | globalInjector.AddVariable(new HeuristicLab.Core.Variable("MaxGenerations", new IntData()));
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145 | globalInjector.AddVariable(new HeuristicLab.Core.Variable("FullTreeShakingFactor", new DoubleData()));
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146 | globalInjector.AddVariable(new HeuristicLab.Core.Variable("OnePointShakingFactor", new DoubleData()));
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147 | globalInjector.AddVariable(new HeuristicLab.Core.Variable("MinInitialTreeSize", new IntData()));
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148 | return globalInjector;
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149 | }
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150 |
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151 | protected internal override IOperator CreateCrossover() {
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152 | StandardCrossOver crossover = new StandardCrossOver();
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153 | crossover.Name = "Crossover";
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154 | return crossover;
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155 | }
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156 |
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157 | protected internal override IOperator CreateTreeCreator() {
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158 | ProbabilisticTreeCreator treeCreator = new ProbabilisticTreeCreator();
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159 | treeCreator.Name = "Tree generator";
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160 | treeCreator.GetVariableInfo("MinTreeSize").ActualName = "MinInitialTreeSize";
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161 | return treeCreator;
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162 | }
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163 |
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164 | protected internal override IOperator CreateFunctionLibraryInjector() {
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165 | FunctionLibraryInjector funLibInjector = new FunctionLibraryInjector();
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166 | funLibInjector.GetVariableValue<BoolData>("Xor", null, false).Data = false;
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167 | funLibInjector.GetVariableValue<BoolData>("Average", null, false).Data = false;
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168 | return funLibInjector;
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169 | }
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170 |
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171 | protected internal override IOperator CreateManipulator() {
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172 | CombinedOperator manipulator = new CombinedOperator();
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173 | manipulator.Name = "Manipulator";
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174 | StochasticMultiBranch multibranch = new StochasticMultiBranch();
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175 | FullTreeShaker fullTreeShaker = new FullTreeShaker();
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176 | fullTreeShaker.GetVariableInfo("ShakingFactor").ActualName = "FullTreeShakingFactor";
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177 |
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178 | OnePointShaker onepointShaker = new OnePointShaker();
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179 | onepointShaker.GetVariableInfo("ShakingFactor").ActualName = "OnePointShakingFactor";
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180 | ChangeNodeTypeManipulation changeNodeTypeManipulation = new ChangeNodeTypeManipulation();
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181 | CutOutNodeManipulation cutOutNodeManipulation = new CutOutNodeManipulation();
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182 | DeleteSubTreeManipulation deleteSubTreeManipulation = new DeleteSubTreeManipulation();
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183 | SubstituteSubTreeManipulation substituteSubTreeManipulation = new SubstituteSubTreeManipulation();
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184 |
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185 | IOperator[] manipulators = new IOperator[] {
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186 | onepointShaker, fullTreeShaker,
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187 | changeNodeTypeManipulation,
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188 | cutOutNodeManipulation,
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189 | deleteSubTreeManipulation,
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190 | substituteSubTreeManipulation};
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191 |
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192 | DoubleArrayData probabilities = new DoubleArrayData(new double[manipulators.Length]);
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193 | for (int i = 0; i < manipulators.Length; i++) {
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194 | probabilities.Data[i] = 1.0;
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195 | multibranch.AddSubOperator(manipulators[i]);
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196 | }
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197 | multibranch.GetVariableInfo("Probabilities").Local = true;
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198 | multibranch.AddVariable(new HeuristicLab.Core.Variable("Probabilities", probabilities));
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199 |
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200 | manipulator.OperatorGraph.AddOperator(multibranch);
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201 | manipulator.OperatorGraph.InitialOperator = multibranch;
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202 | return manipulator;
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203 | }
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204 |
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205 | protected internal override IOperator CreateLoggingOperator() {
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206 | CombinedOperator loggingOperator = new CombinedOperator();
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207 | loggingOperator.Name = "Logging";
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208 | SequentialProcessor seq = new SequentialProcessor();
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209 |
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210 | DataCollector collector = new DataCollector();
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211 | ItemList<StringData> names = collector.GetVariable("VariableNames").GetValue<ItemList<StringData>>();
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212 | names.Add(new StringData("BestQuality"));
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213 | names.Add(new StringData("AverageQuality"));
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214 | names.Add(new StringData("WorstQuality"));
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215 | names.Add(new StringData("BestValidationQuality"));
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216 | names.Add(new StringData("AverageValidationQuality"));
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217 | names.Add(new StringData("WorstValidationQuality"));
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218 | LinechartInjector lineChartInjector = new LinechartInjector();
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219 | lineChartInjector.GetVariableInfo("Linechart").ActualName = "Quality Linechart";
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220 | lineChartInjector.GetVariable("NumberOfLines").GetValue<IntData>().Data = 6;
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221 | QualityLogger qualityLogger = new QualityLogger();
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222 | QualityLogger validationQualityLogger = new QualityLogger();
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223 | validationQualityLogger.Name = "ValidationQualityLogger";
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224 | validationQualityLogger.GetVariableInfo("Quality").ActualName = "ValidationQuality";
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225 | validationQualityLogger.GetVariableInfo("QualityLog").ActualName = "ValidationQualityLog";
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226 |
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227 | seq.AddSubOperator(collector);
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228 | seq.AddSubOperator(lineChartInjector);
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229 | seq.AddSubOperator(qualityLogger);
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230 | seq.AddSubOperator(validationQualityLogger);
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231 |
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232 | loggingOperator.OperatorGraph.AddOperator(seq);
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233 | loggingOperator.OperatorGraph.InitialOperator = seq;
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234 | return loggingOperator;
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235 | }
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236 |
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237 | public virtual IEditor CreateEditor() {
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238 | return new StandardGpEditor(this);
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239 | }
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240 |
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241 | public override IView CreateView() {
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242 | return new StandardGpEditor(this);
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243 | }
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244 | }
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245 | }
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