1 | using System.Collections.Generic;
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2 | using System.Diagnostics;
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3 | using System.Linq;
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4 | using HeuristicLab.Algorithms.GeneticAlgorithm;
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5 | using HeuristicLab.Core;
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6 | using HeuristicLab.PluginInfrastructure;
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7 | using HeuristicLab.Parameters;
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8 | using HeuristicLab.Problems.MetaOptimization;
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9 | using HeuristicLab.Data;
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10 | using System;
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11 | using System.Threading;
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12 | using HeuristicLab.Random;
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13 | using HeuristicLab.Optimization;
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14 | using HeuristicLab.Common;
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15 | using System.IO;
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16 | using HeuristicLab.Problems.TestFunctions;
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17 | using System.Text;
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18 | using HeuristicLab.Selection;
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19 | using HeuristicLab.Algorithms.EvolutionStrategy;
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20 |
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21 | namespace HeuristicLab.MetaOptimization.Test {
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22 | class Program {
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23 | private static int metaAlgorithmPopulationSize = 50;
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24 | private static int metaAlgorithmMaxGenerations = 30;
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25 | private static int metaProblemRepetitions = 3;
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26 |
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27 | private static int baseAlgorithmMaxGenerations = 250;
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28 |
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29 | static void Main(string[] args) {
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30 | //TestShorten();
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31 |
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32 | //TestIntSampling();
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33 | //TestDoubleSampling();
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34 |
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35 | GeneticAlgorithm baseLevelAlgorithm = new GeneticAlgorithm();
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36 |
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37 | MetaOptimizationProblem metaOptimizationProblem = new MetaOptimizationProblem();
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38 | ((MetaOptimizationEvaluator)metaOptimizationProblem.Evaluator).Repetitions.Value = metaProblemRepetitions;
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39 | GeneticAlgorithm metaLevelAlgorithm = GetMetaGA(metaOptimizationProblem);
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40 | //EvolutionStrategy metaLevelAlgorithm = GetMetaES(metaOptimizationProblem);
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41 |
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42 | IValueConfiguration algorithmVc = SetupGAAlgorithm(baseLevelAlgorithm, metaOptimizationProblem);
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43 |
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44 | //Console.WriteLine("Press enter to start");
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45 | //Console.ReadLine();
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46 | //TestConfiguration(algorithmVc, baseLevelAlgorithm);
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47 |
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48 | //Console.WriteLine("Press enter to start");
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49 | //Console.ReadLine();
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50 | TestOptimization(metaLevelAlgorithm);
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51 |
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52 | //TestMemoryLeak(metaLevelAlgorithm);
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53 |
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54 | Console.ReadLine();
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55 | }
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56 |
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57 | private static void TestMemoryLeak(GeneticAlgorithm metaLevelAlgorithm) {
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58 | IValueConfiguration algorithmVc = ((MetaOptimizationProblem)metaLevelAlgorithm.Problem).AlgorithmParameterConfiguration;
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59 |
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60 | Console.WriteLine("Starting Memory Test...");
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61 | Console.ReadLine();
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62 |
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63 | var clones = new List<object>();
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64 | for (int i = 0; i < 1000; i++) {
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65 | var clone = algorithmVc.Clone();
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66 | clones.Add(clone);
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67 | }
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68 |
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69 | Console.WriteLine("Finished. Now GC...");
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70 | Console.ReadLine();
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71 |
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72 | GC.Collect();
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73 |
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74 | Console.WriteLine("Finished!");
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75 | Console.ReadLine();
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76 | }
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77 |
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78 | private static GeneticAlgorithm GetMetaGA(MetaOptimizationProblem metaOptimizationProblem) {
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79 | GeneticAlgorithm metaLevelAlgorithm = new GeneticAlgorithm();
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80 | metaLevelAlgorithm.PopulationSize.Value = metaAlgorithmPopulationSize;
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81 | metaLevelAlgorithm.MaximumGenerations.Value = metaAlgorithmMaxGenerations;
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82 |
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83 | metaLevelAlgorithm.Problem = metaOptimizationProblem;
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84 | metaLevelAlgorithm.Engine = new SequentialEngine.SequentialEngine();
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85 |
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86 | metaLevelAlgorithm.Mutator = new ParameterConfigurationManipulator();
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87 | metaLevelAlgorithm.MutationProbability.Value = 0.15;
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88 |
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89 | return metaLevelAlgorithm;
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90 | }
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91 |
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92 | private static EvolutionStrategy GetMetaES(MetaOptimizationProblem metaOptimizationProblem) {
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93 | EvolutionStrategy metaLevelAlgorithm = new EvolutionStrategy();
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94 | metaLevelAlgorithm.PopulationSize.Value = metaAlgorithmPopulationSize;
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95 | metaLevelAlgorithm.MaximumGenerations.Value = metaAlgorithmMaxGenerations;
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96 |
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97 | metaLevelAlgorithm.Problem = metaOptimizationProblem;
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98 | metaLevelAlgorithm.Engine = new SequentialEngine.SequentialEngine();
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99 |
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100 | metaLevelAlgorithm.Mutator = new ParameterConfigurationManipulator();
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101 | //metaLevelAlgorithm.MutationProbability.Value = 0.15;
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102 |
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103 | return metaLevelAlgorithm;
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104 | }
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105 |
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106 | private static IValueConfiguration SetupGAAlgorithm(GeneticAlgorithm baseLevelAlgorithm, MetaOptimizationProblem metaOptimizationProblem) {
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107 | baseLevelAlgorithm.Problem = new HeuristicLab.Problems.TestFunctions.SingleObjectiveTestFunctionProblem();
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108 | baseLevelAlgorithm.MaximumGenerations.Value = baseAlgorithmMaxGenerations;
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109 |
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110 | metaOptimizationProblem.Algorithm = baseLevelAlgorithm;
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111 | IValueConfiguration algorithmVc = metaOptimizationProblem.AlgorithmParameterConfiguration;
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112 |
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113 | metaOptimizationProblem.Problems.Add(new HeuristicLab.Problems.TestFunctions.SingleObjectiveTestFunctionProblem() {
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114 | Evaluator = new GriewankEvaluator(),
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115 | ProblemSize = new IntValue(500)
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116 | });
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117 | metaOptimizationProblem.Problems.Add(new HeuristicLab.Problems.TestFunctions.SingleObjectiveTestFunctionProblem() {
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118 | Evaluator = new GriewankEvaluator(),
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119 | ProblemSize = new IntValue(1000)
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120 | });
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121 |
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122 | ConfigurePopulationSize(algorithmVc);
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123 | ConfigureMutationRate(algorithmVc);
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124 | ConfigureMutationOperator(algorithmVc);
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125 | ConfigureElites(algorithmVc);
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126 | ConfigureSelectionOperator(algorithmVc);
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127 | return algorithmVc;
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128 | }
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129 |
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130 | private static void TestConfiguration(IValueConfiguration algorithmVc, GeneticAlgorithm baseLevelAlgorithm) {
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131 | IRandom rand = new FastRandom(0);
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132 | // set random values
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133 | for (int i = 0; i < 10; i++) {
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134 | IValueConfiguration clonedVc = (IValueConfiguration)algorithmVc.Clone();
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135 | clonedVc.Randomize(rand);
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136 | clonedVc.Parameterize((GeneticAlgorithm)clonedVc.ActualValue.Value);
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137 | GeneticAlgorithm newAlg = (GeneticAlgorithm)clonedVc.ActualValue.Value;
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138 | Console.WriteLine(string.Format("PopSize: original: {0}, randomized: {1}", baseLevelAlgorithm.PopulationSize, newAlg.PopulationSize));
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139 | Console.WriteLine(string.Format("MutRate: original: {0}, randomized: {1}", baseLevelAlgorithm.MutationProbability, newAlg.MutationProbability));
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140 | Console.WriteLine(string.Format("MutOp: original: {0}, randomized: {1}", baseLevelAlgorithm.Mutator, newAlg.Mutator));
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141 | Console.WriteLine(string.Format("SelOp: original: {0}, randomized: {1}", baseLevelAlgorithm.Selector, newAlg.Selector));
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142 | Console.WriteLine(string.Format("GrSi: original: {0}, randomized: {1}", "?", ((TournamentSelector)newAlg.Selector).GroupSizeParameter.Value));
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143 | Console.WriteLine("---");
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144 | }
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145 |
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146 | Console.WriteLine("=======================");
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147 | algorithmVc.Randomize(rand);
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148 | algorithmVc.Parameterize(baseLevelAlgorithm);
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149 | // mutate
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150 | for (int i = 0; i < 10; i++) {
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151 | IValueConfiguration clonedVc = (IValueConfiguration)algorithmVc.Clone();
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152 | clonedVc.Mutate(rand);
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153 | clonedVc.Parameterize((GeneticAlgorithm)clonedVc.ActualValue.Value);
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154 | GeneticAlgorithm newAlg = (GeneticAlgorithm)clonedVc.ActualValue.Value;
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155 | Console.WriteLine(string.Format("PopSize: original: {0}, mutated: {1}", baseLevelAlgorithm.PopulationSize, newAlg.PopulationSize));
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156 | Console.WriteLine(string.Format("MutRate: original: {0}, mutated: {1}", baseLevelAlgorithm.MutationProbability, newAlg.MutationProbability));
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157 | Console.WriteLine(string.Format("MutOp: original: {0}, mutated: {1}", baseLevelAlgorithm.Mutator, newAlg.Mutator));
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158 | Console.WriteLine(string.Format("SelOp: original: {0}, mutated: {1}", baseLevelAlgorithm.Selector, newAlg.Selector));
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159 | Console.WriteLine(string.Format("GrSi: original: {0}, mutated: {1}", ((TournamentSelector)baseLevelAlgorithm.Selector).GroupSizeParameter.Value, ((TournamentSelector)newAlg.Selector).GroupSizeParameter.Value));
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160 | Console.WriteLine("---");
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161 | }
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162 |
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163 | Console.WriteLine("=======================");
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164 | // cross
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165 | for (int i = 0; i < 10; i++) {
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166 | IValueConfiguration clonedVc1 = (IValueConfiguration)algorithmVc.Clone();
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167 | IValueConfiguration clonedVc2 = (IValueConfiguration)algorithmVc.Clone();
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168 |
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169 | GeneticAlgorithm first = (GeneticAlgorithm)clonedVc1.ActualValue.Value.Clone();
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170 | GeneticAlgorithm second = (GeneticAlgorithm)clonedVc2.ActualValue.Value.Clone();
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171 |
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172 | clonedVc1.Randomize(rand);
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173 | clonedVc1.Parameterize(first);
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174 |
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175 | clonedVc2.Randomize(rand);
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176 | clonedVc2.Parameterize(second);
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177 |
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178 | var popSizeBefore = first.PopulationSize.Value;
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179 | var mutRateBefore = first.MutationProbability.Value;
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180 | var mutOpBefore = first.Mutator;
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181 | var selOpBefore = first.Selector;
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182 | var groupSizeBefore = ((TournamentSelector)first.Selector).GroupSizeParameter.Value.Value;
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183 |
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184 | clonedVc1.Cross(clonedVc2, rand);
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185 | clonedVc1.Parameterize(first);
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186 |
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187 | Console.WriteLine(string.Format("PopSize: first: {0}, second: {1}, crossed: {2}", popSizeBefore, second.PopulationSize, first.PopulationSize));
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188 | Console.WriteLine(string.Format("MutRate: first: {0}, second: {1}, crossed: {2}", mutRateBefore, second.MutationProbability, first.MutationProbability));
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189 | Console.WriteLine(string.Format("MutOp: first: {0}, second: {1}, crossed: {2}", mutOpBefore, second.Mutator, first.Mutator));
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190 | Console.WriteLine(string.Format("SelOp: first: {0}, second: {1}, crossed: {2}", selOpBefore, second.Selector, first.Selector));
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191 | Console.WriteLine(string.Format("GrSi: first: {0}, second: {1}, crossed: {2}", groupSizeBefore, ((TournamentSelector)second.Selector).GroupSizeParameter.Value, ((TournamentSelector)first.Selector).GroupSizeParameter.Value));
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192 | Console.WriteLine("---");
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193 | }
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194 | Console.WriteLine("=======================");
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195 | }
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196 |
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197 | private static void ConfigureMutationOperator(IValueConfiguration algorithmVc) {
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198 | var mutationOperator = algorithmVc.ParameterConfigurations.Where(x => x.Name == "Mutator").SingleOrDefault();
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199 | mutationOperator.Optimize = true;
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200 |
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201 | // uncheck multiMutator to avoid Michalewicz issue
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202 | var multiMutator = mutationOperator.ValueConfigurations.Where(x => x.ActualValue.Value.ItemName.StartsWith("Multi")).SingleOrDefault();
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203 | if (multiMutator != null) {
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204 | mutationOperator.ValueConfigurations.SetItemCheckedState(multiMutator, false);
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205 | }
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206 | }
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207 |
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208 | private static void ConfigureSelectionOperator(IValueConfiguration algorithmVc) {
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209 | var selectionOperatorPc = algorithmVc.ParameterConfigurations.Where(x => x.Name == "Selector").SingleOrDefault();
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210 | selectionOperatorPc.Optimize = true;
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211 |
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212 | foreach (var vc in selectionOperatorPc.ValueConfigurations) {
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213 | if (vc.ActualValue.ValueDataType == typeof(TournamentSelector)) {
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214 | selectionOperatorPc.ValueConfigurations.SetItemCheckedState(vc, true);
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215 | vc.Optimize = true;
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216 | ConfigureTournamentGroupSize(vc);
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217 | } else if (vc.ActualValue.ValueDataType == typeof(RandomSelector)) {
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218 | selectionOperatorPc.ValueConfigurations.SetItemCheckedState(vc, true);
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219 | } else {
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220 | selectionOperatorPc.ValueConfigurations.SetItemCheckedState(vc, true);
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221 | }
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222 | }
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223 | }
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224 |
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225 | private static void ConfigureTournamentGroupSize(IValueConfiguration tournamentVc) {
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226 | var groupSizePc = tournamentVc.ParameterConfigurations.Where(x => x.ParameterName == "GroupSize").SingleOrDefault();
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227 | groupSizePc.Optimize = true;
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228 |
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229 | groupSizePc.ValueConfigurations.First().Optimize = true;
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230 | groupSizePc.ValueConfigurations.First().RangeConstraint.LowerBound = new IntValue(0);
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231 | groupSizePc.ValueConfigurations.First().RangeConstraint.UpperBound = new IntValue(100);
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232 | groupSizePc.ValueConfigurations.First().RangeConstraint.StepSize = new IntValue(1);
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233 | }
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234 |
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235 | private static void ConfigurePopulationSize(IValueConfiguration algorithmVc) {
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236 | var populationSizePc = algorithmVc.ParameterConfigurations.Where(x => x.Name == "PopulationSize").SingleOrDefault();
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237 | populationSizePc.Optimize = true;
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238 | var populationSizeVc = populationSizePc.ValueConfigurations.First();
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239 | populationSizeVc.Optimize = true;
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240 | populationSizeVc.RangeConstraint.LowerBound = new IntValue(20);
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241 | populationSizeVc.RangeConstraint.UpperBound = new IntValue(100);
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242 | populationSizeVc.RangeConstraint.StepSize = new IntValue(1);
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243 | }
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244 |
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245 | private static void ConfigureMutationRate(IValueConfiguration algorithmVc) {
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246 | var mutationRatePc = algorithmVc.ParameterConfigurations.Where(x => x.Name == "MutationProbability").SingleOrDefault();
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247 | mutationRatePc.Optimize = true;
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248 | var mutationRateVc = mutationRatePc.ValueConfigurations.First();
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249 | mutationRateVc.Optimize = true;
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250 | mutationRateVc.RangeConstraint.LowerBound = new PercentValue(0.0);
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251 | mutationRateVc.RangeConstraint.UpperBound = new PercentValue(1.0);
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252 | mutationRateVc.RangeConstraint.StepSize = new PercentValue(0.01);
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253 | }
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254 |
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255 | private static void ConfigureElites(IValueConfiguration algorithmVc) {
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256 | var elitesPc = algorithmVc.ParameterConfigurations.Where(x => x.Name == "Elites").SingleOrDefault();
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257 | elitesPc.Optimize = true;
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258 | var elitesVc = elitesPc.ValueConfigurations.First();
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259 | elitesVc.Optimize = true;
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260 | elitesVc.RangeConstraint.LowerBound = new IntValue(0);
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261 | elitesVc.RangeConstraint.UpperBound = new IntValue(20);
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262 | elitesVc.RangeConstraint.StepSize = new IntValue(1);
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263 | }
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264 |
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265 | private static void TestOptimization(EngineAlgorithm metaLevelAlgorithm) {
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266 | ContentManager.Initialize(new PersistenceContentManager());
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267 | string path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Results");
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268 | if (!Directory.Exists(path))
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269 | Directory.CreateDirectory(path);
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270 | string id = DateTime.Now.ToString("yyyy.MM.dd - HH;mm;ss,ffff");
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271 | string resultPath = Path.Combine(path, string.Format("{0} - Result.hl", id));
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272 | string outputPath = Path.Combine(path, string.Format("{0} - Console.txt", id));
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273 |
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274 |
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275 | using (var sw = new StreamWriter(outputPath)) {
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276 | sw.AutoFlush = true;
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277 |
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278 | StringBuilder sb1 = new StringBuilder();
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279 | sb1.AppendLine(string.Format("Meta.PopulationSize: {0}", metaAlgorithmPopulationSize));
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280 | sb1.AppendLine(string.Format("Meta.MaxGenerations: {0}", metaAlgorithmMaxGenerations));
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281 | sb1.AppendLine(string.Format("Meta.Repetitions : {0}", metaProblemRepetitions));
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282 | sb1.AppendLine(string.Format("Base.MaxGenerations: {0}", baseAlgorithmMaxGenerations));
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283 | sw.WriteLine(sb1.ToString());
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284 | Console.WriteLine(sb1.ToString());
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285 |
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286 | metaLevelAlgorithm.Start();
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287 | int i = 0;
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288 | int currentGeneration = -1;
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289 | do {
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290 | Thread.Sleep(500);
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291 | if (metaLevelAlgorithm.Results.ContainsKey("Generations") && ((IntValue)metaLevelAlgorithm.Results["Generations"].Value).Value != currentGeneration) {
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292 | while (metaLevelAlgorithm.Results.Count < 3) Thread.Sleep(100);
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293 | StringBuilder sb = new StringBuilder();
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294 | sb.AppendLine(DateTime.Now.ToLongTimeString());
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295 | sb.AppendLine("=================================");
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296 |
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297 | foreach (var result in metaLevelAlgorithm.Results) {
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298 | sb.AppendLine(result.ToString());
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299 | if (result.Name == "Population") {
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300 | RunCollection rc = (RunCollection)result.Value;
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301 | var orderedRuns = rc.OrderBy(x => x.Results["RunsAverageQuality"]);
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302 |
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303 | sb.AppendLine("Qual. PoSi MutRa Eli GrSi MutOp");
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304 | foreach (IRun run in orderedRuns) {
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305 | string selector;
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306 | if (run.Parameters["Selector"] is TournamentSelector) {
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307 | selector = string.Format("{0} ({1})", run.Parameters["Selector"].ToString(), ((TournamentSelector)run.Parameters["Selector"]).GroupSizeParameter.Value.ToString());
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308 | } else {
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309 | selector = string.Format("{0}", run.Parameters["Selector"].ToString());
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310 | }
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311 |
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312 | sb.AppendLine(string.Format("{0} {1} {2} {3} {4} {5}",
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313 | ((DoubleValue)run.Results["RunsAverageQuality"]).Value.ToString("#0.00").PadLeft(7, ' '),
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314 | ((IntValue)run.Parameters["PopulationSize"]).Value.ToString().PadLeft(3, ' ').PadRight(3, ' '),
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315 | ((DoubleValue)run.Parameters["MutationProbability"]).Value.ToString("0.00").PadLeft(5, ' '),
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316 | ((IntValue)run.Parameters["Elites"]).Value.ToString().PadLeft(3, ' '),
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317 | Shorten(selector, 20).PadRight(20, ' '),
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318 | run.Parameters["Mutator"].ToString()));
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319 | }
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320 | }
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321 | } // foreach
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322 | Console.Clear();
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323 | Console.WriteLine(sb.ToString());
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324 | sw.WriteLine(sb.ToString());
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325 | currentGeneration = ((IntValue)metaLevelAlgorithm.Results["Generations"].Value).Value;
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326 | } // if
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327 | if (i % 30 == 0) GC.Collect();
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328 | i++;
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329 | } while (metaLevelAlgorithm.ExecutionState != ExecutionState.Stopped);
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330 | }
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331 |
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332 | Console.WriteLine();
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333 | Console.WriteLine("Storing...");
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334 |
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335 | ContentManager.Save((IStorableContent)metaLevelAlgorithm, resultPath, true);
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336 | Console.WriteLine("Finished");
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337 | }
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338 |
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339 | private static void TestShorten() {
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340 | int n = 8;
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341 | Console.WriteLine(Shorten("1", n));
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342 | Console.WriteLine(Shorten("12", n));
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343 | Console.WriteLine(Shorten("123", n));
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344 | Console.WriteLine(Shorten("1234", n));
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345 | Console.WriteLine(Shorten("12345", n));
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346 | Console.WriteLine(Shorten("123456", n));
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347 | Console.WriteLine(Shorten("1234567", n));
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348 | Console.WriteLine(Shorten("12345678", n));
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349 | Console.WriteLine(Shorten("123456789", n));
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350 | Console.WriteLine(Shorten("1234567890", n));
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351 | Console.WriteLine(Shorten("12345678901", n));
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352 | }
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353 |
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354 | private static string Shorten(string s, int n) {
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355 | string placeholder = "..";
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356 | if (s.Length <= n) return s;
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357 | int len = n / 2 - placeholder.Length / 2;
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358 | string start = s.Substring(0, len);
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359 | string end = s.Substring(s.Length - len, len);
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360 | return start + placeholder + end;
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361 | }
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362 |
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363 | private static void TestIntSampling() {
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364 | System.Random rand = new System.Random();
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365 | int lower = 10;
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366 | int upper = 20;
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367 | int stepsize = 7;
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368 | for (int i = 0; i < 100; i++) {
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369 | int val;
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370 | do {
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371 | val = rand.Next(lower / stepsize, upper / stepsize + 1) * stepsize;
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372 | } while (val < lower || val > upper);
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373 | Console.WriteLine(val);
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374 | }
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375 | }
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376 |
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377 | private static void TestDoubleSampling() {
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378 | System.Random rand = new System.Random();
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379 | double lower = 2;
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380 | double upper = 3;
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381 | double stepsize = 0.6;
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382 | for (int i = 0; i < 100; i++) {
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383 | double val;
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384 | do {
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385 | val = Math.Round((rand.NextDouble() * (upper - lower) + lower) / stepsize, 0) * stepsize;
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386 | } while (val < lower || val > upper);
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387 | Console.WriteLine(val);
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388 | }
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389 | }
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390 |
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391 | private static IEnumerable<IItem> GetValidValues(IValueParameter valueParameter) {
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392 | return ApplicationManager.Manager.GetInstances(valueParameter.DataType).Select(x => (IItem)x).OrderBy(x => x.ItemName);
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393 | }
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394 | }
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395 | }
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