1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2015 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 HeuristicLab.Analysis;
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26 | using HeuristicLab.Collections;
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27 | using HeuristicLab.Common;
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28 | using HeuristicLab.Core;
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29 | using HeuristicLab.Data;
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30 | using HeuristicLab.Operators;
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31 | using HeuristicLab.Optimization;
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32 | using HeuristicLab.Optimization.Operators;
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33 | using HeuristicLab.Parameters;
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34 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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35 | using HeuristicLab.Random;
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36 |
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37 | namespace HeuristicLab.Algorithms.ALPS {
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38 | [Item("ALPS", "A base class for all ALPS-based algorithms.")]
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39 | public abstract class Alps : HeuristicOptimizationEngineAlgorithm, IStorableContent {
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40 | public string Filename { get; set; }
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41 |
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42 | #region Problem Properties
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43 | public override Type ProblemType {
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44 | get { return typeof(ISingleObjectiveHeuristicOptimizationProblem); }
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45 | }
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46 | public new ISingleObjectiveHeuristicOptimizationProblem Problem {
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47 | get { return (ISingleObjectiveHeuristicOptimizationProblem)base.Problem; }
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48 | set { base.Problem = value; }
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49 | }
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50 | #endregion
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51 |
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52 | #region Parameter Properties
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53 | private IValueParameter<IntValue> SeedParameter {
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54 | get { return (IValueParameter<IntValue>)Parameters["Seed"]; }
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55 | }
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56 | private IValueParameter<BoolValue> SetSeedRandomlyParameter {
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57 | get { return (IValueParameter<BoolValue>)Parameters["SetSeedRandomly"]; }
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58 | }
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59 | private IFixedValueParameter<MultiAnalyzer> AnalyzerParameter {
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60 | get { return (IFixedValueParameter<MultiAnalyzer>)Parameters["Analyzer"]; }
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61 | }
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62 | private IFixedValueParameter<MultiAnalyzer> LayerAnalyzerParameter {
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63 | get { return (IFixedValueParameter<MultiAnalyzer>)Parameters["LayerAnalyzer"]; }
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64 | }
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65 | private IValueParameter<IntValue> NumberOfLayersParameter {
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66 | get { return (IValueParameter<IntValue>)Parameters["NumberOfLayers"]; }
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67 | }
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68 | private IValueParameter<AgingScheme> AgingSchemeParameter {
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69 | get { return (IValueParameter<AgingScheme>)Parameters["AgingScheme"]; }
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70 | }
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71 | private IValueParameter<IntValue> AgeGapParameter {
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72 | get { return (IValueParameter<IntValue>)Parameters["AgeGap"]; }
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73 | }
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74 | private IValueParameter<IntArray> AgeLimitsParameter {
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75 | get { return (IValueParameter<IntArray>)Parameters["AgeLimits"]; }
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76 | }
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77 | private IValueParameter<ReductionOperation> AgeInheritanceParameter {
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78 | get { return (IValueParameter<ReductionOperation>)Parameters["AgeInheritance"]; }
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79 | }
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80 | private IValueParameter<IntValue> MatingPoolRangeParameter {
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81 | get { return (IValueParameter<IntValue>)Parameters["MatingPoolRange"]; }
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82 | }
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83 | private IValueParameter<PercentValue> MatingPoolSelectionPercentageParameter {
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84 | get { return (IValueLookupParameter<PercentValue>)Parameters["MatingPoolSelectionPercentage"]; }
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85 | }
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86 | #endregion
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87 |
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88 | #region Properties
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89 | public IntValue Seed {
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90 | get { return SeedParameter.Value; }
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91 | set { SeedParameter.Value = value; }
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92 | }
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93 | public BoolValue SetSeedRandomly {
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94 | get { return SetSeedRandomlyParameter.Value; }
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95 | set { SetSeedRandomlyParameter.Value = value; }
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96 | }
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97 | public MultiAnalyzer Analyzer {
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98 | get { return AnalyzerParameter.Value; }
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99 | }
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100 | public MultiAnalyzer LayerAnalyzer {
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101 | get { return LayerAnalyzerParameter.Value; }
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102 | }
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103 | public IntValue NumberOfLayers {
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104 | get { return NumberOfLayersParameter.Value; }
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105 | set { NumberOfLayersParameter.Value = value; }
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106 | }
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107 | public AgingScheme AgingScheme {
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108 | get { return AgingSchemeParameter.Value; }
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109 | set { AgingSchemeParameter.Value = value; }
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110 | }
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111 | public IntValue AgeGap {
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112 | get { return AgeGapParameter.Value; }
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113 | set { AgeGapParameter.Value = value; }
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114 | }
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115 | public IntArray AgeLimits {
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116 | get { return AgeLimitsParameter.Value; }
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117 | set { AgeLimitsParameter.Value = value; }
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118 | }
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119 | public ReductionOperation AgeInheritance {
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120 | get { return AgeInheritanceParameter.Value; }
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121 | set { AgeInheritanceParameter.Value = value; }
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122 | }
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123 | public IntValue MatingPoolRange {
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124 | get { return MatingPoolRangeParameter.Value; }
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125 | set { MatingPoolRangeParameter.Value = value; }
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126 | }
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127 | public PercentValue MatingPoolSelectionPercentage {
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128 | get { return MatingPoolSelectionPercentageParameter.Value; }
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129 | set { MatingPoolSelectionPercentageParameter.Value = value; }
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130 | }
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131 | #endregion
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132 |
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133 | #region Helper Properties
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134 | protected RandomCreator GlobalRandomCreator {
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135 | get { return (RandomCreator)OperatorGraph.InitialOperator; }
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136 | }
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137 | protected SolutionsCreator SolutionsCreator {
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138 | get { return OperatorGraph.Iterate().OfType<SolutionsCreator>().First(); }
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139 | }
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140 | #endregion
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141 |
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142 | #region Preconfigured Analyzers
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143 | [Storable]
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144 | private BestAverageWorstQualityAnalyzer qualityAnalyzer;
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145 | [Storable]
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146 | private BestAverageWorstQualityAnalyzer layerQualityAnalyzer;
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147 | #endregion
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148 |
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149 | [StorableConstructor]
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150 | protected Alps(bool deserializing)
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151 | : base(deserializing) { }
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152 | protected Alps(Alps original, Cloner cloner)
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153 | : base(original, cloner) {
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154 | qualityAnalyzer = cloner.Clone(original.qualityAnalyzer);
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155 | layerQualityAnalyzer = cloner.Clone(original.layerQualityAnalyzer);
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156 | Initialize();
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157 | }
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158 |
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159 | protected Alps()
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160 | : base() {
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161 | Parameters.Add(new ValueParameter<IntValue>("Seed", "The random seed used to initialize the new pseudo random number generator.", new IntValue(0)));
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162 | Parameters.Add(new ValueParameter<BoolValue>("SetSeedRandomly", "True if the random seed should be set to a random value, otherwise false.", new BoolValue(true)));
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163 | Parameters.Add(new FixedValueParameter<MultiAnalyzer>("Analyzer", "The operator used to analyze the islands.", new MultiAnalyzer()));
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164 | Parameters.Add(new FixedValueParameter<MultiAnalyzer>("LayerAnalyzer", "The operator used to analyze each layer.", new MultiAnalyzer()));
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165 | Parameters.Add(new ValueParameter<IntValue>("NumberOfLayers", "The number of layers.", new IntValue(10)));
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166 | Parameters.Add(new ValueParameter<AgingScheme>("AgingScheme", "The aging scheme for setting the age-limits for the layers.", new AgingScheme(AgingSchemes.Polynomial)));
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167 | Parameters.Add(new ValueParameter<IntValue>("AgeGap", "The frequency of reseeding the lowest layer and scaling factor for the age-limits for the layers", new IntValue(20)));
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168 | Parameters.Add(new ValueParameter<IntArray>("AgeLimits", new IntArray(new int[0])) { Hidden = true });
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169 | Parameters.Add(new ValueParameter<ReductionOperation>("AgeInheritance", "The operator for determining the age of an offspring based the parents' age.", new ReductionOperation(ReductionOperations.Max)) { Hidden = true });
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170 | Parameters.Add(new ValueParameter<IntValue>("MatingPoolRange", "The range of layers used for creating a mating pool. (1 = current + previous layer)", new IntValue(1)) { Hidden = true });
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171 | Parameters.Add(new ValueParameter<PercentValue>("MatingPoolSelectionPercentage", "Percentage of the previous layers used for creating a mating pool.", new PercentValue(1.0, restrictToUnitInterval: true)) { Hidden = true });
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172 |
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173 | qualityAnalyzer = new BestAverageWorstQualityAnalyzer();
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174 | layerQualityAnalyzer = new BestAverageWorstQualityAnalyzer();
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175 |
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176 | // Create Operator Graph
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177 |
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178 | RecalculateAgeLimits();
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179 |
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180 | ParameterizeAnalyzers();
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181 | UpdateAnalyzers();
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182 |
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183 | Initialize();
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184 | }
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185 |
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186 | public override void Prepare() {
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187 | if (Problem != null)
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188 | base.Prepare();
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189 | }
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190 |
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191 | #region Events
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192 | protected override void OnProblemChanged() {
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193 | base.OnProblemChanged();
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194 | ParameterizeStochasticOperator(Problem.SolutionCreator);
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195 | ParameterizeStochasticOperatorForLayer(Problem.Evaluator);
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196 | foreach (var @operator in Problem.Operators.OfType<IOperator>())
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197 | ParameterizeStochasticOperator(@operator);
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198 | ParameterizeSolutionsCreator();
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199 | ParameterizeAnalyzers();
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200 | UpdateAnalyzers();
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201 | Problem.Evaluator.QualityParameter.ActualNameChanged += Evaluator_QualityParameter_ActualNameChanged;
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202 | }
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203 | protected override void Problem_SolutionCreatorChanged(object sender, EventArgs e) {
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204 | base.Problem_SolutionCreatorChanged(sender, e);
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205 | ParameterizeStochasticOperator(Problem.SolutionCreator);
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206 | ParameterizeSolutionsCreator();
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207 | }
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208 | protected override void Problem_EvaluatorChanged(object sender, EventArgs e) {
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209 | base.Problem_EvaluatorChanged(sender, e);
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210 | ParameterizeStochasticOperatorForLayer(Problem.Evaluator);
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211 | ParameterizeSolutionsCreator();
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212 | ParameterizeAnalyzers();
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213 | Problem.Evaluator.QualityParameter.ActualNameChanged += Evaluator_QualityParameter_ActualNameChanged;
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214 | }
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215 |
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216 | protected override void Problem_OperatorsChanged(object sender, EventArgs e) {
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217 | foreach (var @operator in Problem.Operators.OfType<IOperator>())
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218 | ParameterizeStochasticOperator(@operator);
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219 | UpdateAnalyzers();
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220 | base.Problem_OperatorsChanged(sender, e);
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221 | }
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222 | protected virtual void Evaluator_QualityParameter_ActualNameChanged(object sender, EventArgs e) {
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223 | ParameterizeAnalyzers();
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224 | }
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225 |
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226 | private void AgeGapParameter_ValueChanged(object sender, EventArgs e) {
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227 | AgeGap.ValueChanged += AgeGap_ValueChanged;
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228 | RecalculateAgeLimits();
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229 | }
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230 | private void AgeGap_ValueChanged(object sender, EventArgs e) {
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231 | RecalculateAgeLimits();
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232 | }
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233 | private void AgingSchemeParameter_ValueChanged(object sender, EventArgs e) {
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234 | AgingScheme.ValueChanged += AgingScheme_ValueChanged;
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235 | RecalculateAgeLimits();
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236 | }
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237 | private void AgingScheme_ValueChanged(object sender, EventArgs e) {
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238 | RecalculateAgeLimits();
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239 | }
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240 | private void NumberOfLayersParameter_ValueChanged(object sender, EventArgs e) {
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241 | NumberOfLayers.ValueChanged += NumberOfLayers_ValueChanged;
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242 | RecalculateAgeLimits();
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243 | }
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244 | private void NumberOfLayers_ValueChanged(object sender, EventArgs e) {
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245 | RecalculateAgeLimits();
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246 | }
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247 | private void AnalyzerOperators_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<IAnalyzer>> e) {
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248 | foreach (var analyzer in e.Items) {
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249 | foreach (var parameter in analyzer.Value.Parameters.OfType<IScopeTreeLookupParameter>()) {
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250 | parameter.Depth = 2;
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251 | }
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252 | }
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253 | }
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254 | private void LayerAnalyzerOperators_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<IAnalyzer>> e) {
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255 | foreach (var analyzer in e.Items) {
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256 | IParameter resultParameter;
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257 | if (analyzer.Value.Parameters.TryGetValue("Results", out resultParameter)) {
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258 | var lookupParameter = resultParameter as ILookupParameter<ResultCollection>;
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259 | if (lookupParameter != null)
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260 | lookupParameter.ActualName = "LayerResults";
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261 | }
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262 | foreach (var parameter in analyzer.Value.Parameters.OfType<IScopeTreeLookupParameter>()) {
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263 | parameter.Depth = 1;
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264 | }
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265 | }
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266 | }
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267 | #endregion
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268 |
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269 | #region Parameterization
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270 | private void Initialize() {
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271 | if (Problem != null)
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272 | Problem.Evaluator.QualityParameter.ActualNameChanged += Evaluator_QualityParameter_ActualNameChanged;
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273 | AgeGapParameter.ValueChanged += AgeGapParameter_ValueChanged;
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274 | AgeGap.ValueChanged += AgeGap_ValueChanged;
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275 | AgingSchemeParameter.ValueChanged += AgingSchemeParameter_ValueChanged;
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276 | AgingScheme.ValueChanged += AgingScheme_ValueChanged;
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277 | NumberOfLayersParameter.ValueChanged += NumberOfLayersParameter_ValueChanged;
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278 | NumberOfLayers.ValueChanged += NumberOfLayers_ValueChanged;
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279 | Analyzer.Operators.ItemsAdded += AnalyzerOperators_ItemsAdded;
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280 | LayerAnalyzer.Operators.ItemsAdded += LayerAnalyzerOperators_ItemsAdded;
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281 | }
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282 | private void ParameterizeSolutionsCreator() {
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283 | SolutionsCreator.EvaluatorParameter.ActualName = Problem.EvaluatorParameter.Name;
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284 | SolutionsCreator.SolutionCreatorParameter.ActualName = Problem.SolutionCreatorParameter.Name;
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285 | }
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286 | private void ParameterizeAnalyzers() {
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287 | qualityAnalyzer.ResultsParameter.ActualName = "Results";
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288 | qualityAnalyzer.ResultsParameter.Hidden = true;
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289 | qualityAnalyzer.QualityParameter.Depth = 2;
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290 | layerQualityAnalyzer.ResultsParameter.ActualName = "Results";
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291 | layerQualityAnalyzer.ResultsParameter.Hidden = true;
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292 | layerQualityAnalyzer.QualityParameter.Depth = 1;
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293 | if (Problem != null) {
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294 | qualityAnalyzer.MaximizationParameter.ActualName = Problem.MaximizationParameter.Name;
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295 | qualityAnalyzer.MaximizationParameter.Hidden = true;
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296 | qualityAnalyzer.QualityParameter.ActualName = Problem.Evaluator.QualityParameter.ActualName;
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297 | qualityAnalyzer.QualityParameter.Hidden = true;
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298 | qualityAnalyzer.BestKnownQualityParameter.ActualName = Problem.BestKnownQualityParameter.Name;
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299 | qualityAnalyzer.BestKnownQualityParameter.Hidden = true;
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300 | layerQualityAnalyzer.MaximizationParameter.ActualName = Problem.MaximizationParameter.Name;
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301 | layerQualityAnalyzer.MaximizationParameter.Hidden = true;
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302 | layerQualityAnalyzer.QualityParameter.ActualName = Problem.Evaluator.QualityParameter.ActualName;
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303 | layerQualityAnalyzer.QualityParameter.Hidden = true;
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304 | layerQualityAnalyzer.BestKnownQualityParameter.ActualName = Problem.BestKnownQualityParameter.Name;
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305 | layerQualityAnalyzer.BestKnownQualityParameter.Hidden = true;
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306 | }
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307 | }
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308 | protected virtual void ParameterizeStochasticOperator(IOperator @operator) {
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309 | var stochasticOperator = @operator as IStochasticOperator;
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310 | if (stochasticOperator != null) {
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311 | stochasticOperator.RandomParameter.ActualName = GlobalRandomCreator.RandomParameter.ActualName;
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312 | stochasticOperator.RandomParameter.Hidden = true;
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313 | }
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314 | }
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315 | protected virtual void ParameterizeStochasticOperatorForLayer(IOperator @operator) {
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316 | var stochasticOperator = @operator as IStochasticOperator;
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317 | if (stochasticOperator != null) {
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318 | stochasticOperator.RandomParameter.ActualName = "LocalRandom";
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319 | stochasticOperator.RandomParameter.Hidden = true;
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320 | }
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321 | }
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322 | #endregion
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323 |
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324 | #region Updates
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325 | private void UpdateAnalyzers() {
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326 | Analyzer.Operators.Clear();
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327 | LayerAnalyzer.Operators.Clear();
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328 |
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329 | Analyzer.Operators.Add(qualityAnalyzer, qualityAnalyzer.EnabledByDefault);
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330 | LayerAnalyzer.Operators.Add(layerQualityAnalyzer, layerQualityAnalyzer.EnabledByDefault);
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331 |
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332 | if (Problem != null) {
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333 | foreach (var analyzer in Problem.Operators.OfType<IAnalyzer>()) {
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334 | Analyzer.Operators.Add(analyzer, analyzer.EnabledByDefault);
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335 | }
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336 | }
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337 | }
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338 | #endregion
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339 |
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340 | private void RecalculateAgeLimits() {
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341 | var scheme = AgingScheme.Value;
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342 | int ageGap = AgeGap.Value;
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343 | int numberOfLayers = NumberOfLayers.Value;
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344 | AgeLimits = AgingSchemeCalculator.CalculateAgeLimits(scheme, ageGap, numberOfLayers);
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345 | }
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346 | }
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347 | } |
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