| 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2010 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.Common;
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| 27 | using HeuristicLab.Core;
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| 28 | using HeuristicLab.Data;
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| 29 | using HeuristicLab.Operators;
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| 30 | using HeuristicLab.Optimization;
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| 31 | using HeuristicLab.Optimization.Operators;
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| 32 | using HeuristicLab.Parameters;
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| 33 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 34 | using HeuristicLab.PluginInfrastructure;
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| 35 | using HeuristicLab.Selection;
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| 36 |
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| 37 | namespace HeuristicLab.Algorithms.GeneticAlgorithm {
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| 38 | /// <summary>
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| 39 | /// An island genetic algorithm main loop operator.
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| 40 | /// </summary>
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| 41 | [Item("IslandGeneticAlgorithmMainLoop", "An island genetic algorithm main loop operator.")]
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| 42 | [StorableClass]
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| 43 | public sealed class IslandGeneticAlgorithmMainLoop : AlgorithmOperator {
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| 44 | #region Parameter Properties
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| 45 | public ValueLookupParameter<IRandom> RandomParameter {
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| 46 | get { return (ValueLookupParameter<IRandom>)Parameters["Random"]; }
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| 47 | }
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| 48 | public ValueLookupParameter<BoolValue> MaximizationParameter {
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| 49 | get { return (ValueLookupParameter<BoolValue>)Parameters["Maximization"]; }
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| 50 | }
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| 51 | public SubScopesLookupParameter<DoubleValue> QualityParameter {
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| 52 | get { return (SubScopesLookupParameter<DoubleValue>)Parameters["Quality"]; }
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| 53 | }
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| 54 | public ValueLookupParameter<DoubleValue> BestKnownQualityParameter {
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| 55 | get { return (ValueLookupParameter<DoubleValue>)Parameters["BestKnownQuality"]; }
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| 56 | }
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| 57 | public ValueLookupParameter<IntValue> NumberOfIslandsParameter {
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| 58 | get { return (ValueLookupParameter<IntValue>)Parameters["NumberOfIslands"]; }
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| 59 | }
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| 60 | public ValueLookupParameter<IntValue> MigrationIntervalParameter {
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| 61 | get { return (ValueLookupParameter<IntValue>)Parameters["MigrationInterval"]; }
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| 62 | }
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| 63 | public ValueLookupParameter<PercentValue> MigrationRateParameter {
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| 64 | get { return (ValueLookupParameter<PercentValue>)Parameters["MigrationRate"]; }
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| 65 | }
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| 66 | public ValueLookupParameter<IOperator> MigratorParameter {
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| 67 | get { return (ValueLookupParameter<IOperator>)Parameters["Migrator"]; }
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| 68 | }
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| 69 | public ValueLookupParameter<IOperator> EmigrantsSelectorParameter {
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| 70 | get { return (ValueLookupParameter<IOperator>)Parameters["EmigrantsSelector"]; }
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| 71 | }
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| 72 | public ValueLookupParameter<IOperator> ImmigrationReplacerParameter {
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| 73 | get { return (ValueLookupParameter<IOperator>)Parameters["ImmigrationReplacer"]; }
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| 74 | }
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| 75 | public ValueLookupParameter<IntValue> PopulationSizeParameter {
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| 76 | get { return (ValueLookupParameter<IntValue>)Parameters["PopulationSize"]; }
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| 77 | }
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| 78 | public ValueLookupParameter<IntValue> MaximumMigrationsParameter {
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| 79 | get { return (ValueLookupParameter<IntValue>)Parameters["MaximumMigrations"]; }
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| 80 | }
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| 81 | public ValueLookupParameter<IOperator> SelectorParameter {
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| 82 | get { return (ValueLookupParameter<IOperator>)Parameters["Selector"]; }
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| 83 | }
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| 84 | public ValueLookupParameter<IOperator> CrossoverParameter {
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| 85 | get { return (ValueLookupParameter<IOperator>)Parameters["Crossover"]; }
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| 86 | }
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| 87 | public ValueLookupParameter<PercentValue> MutationProbabilityParameter {
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| 88 | get { return (ValueLookupParameter<PercentValue>)Parameters["MutationProbability"]; }
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| 89 | }
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| 90 | public ValueLookupParameter<IOperator> MutatorParameter {
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| 91 | get { return (ValueLookupParameter<IOperator>)Parameters["Mutator"]; }
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| 92 | }
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| 93 | public ValueLookupParameter<IOperator> EvaluatorParameter {
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| 94 | get { return (ValueLookupParameter<IOperator>)Parameters["Evaluator"]; }
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| 95 | }
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| 96 | public ValueLookupParameter<IntValue> ElitesParameter {
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| 97 | get { return (ValueLookupParameter<IntValue>)Parameters["Elites"]; }
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| 98 | }
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| 99 | public ValueLookupParameter<ResultCollection> ResultsParameter {
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| 100 | get { return (ValueLookupParameter<ResultCollection>)Parameters["Results"]; }
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| 101 | }
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| 102 | public ValueLookupParameter<IOperator> VisualizerParameter {
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| 103 | get { return (ValueLookupParameter<IOperator>)Parameters["Visualizer"]; }
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| 104 | }
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| 105 | public LookupParameter<IItem> VisualizationParameter {
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| 106 | get { return (LookupParameter<IItem>)Parameters["Visualization"]; }
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| 107 | }
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| 108 | #endregion
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| 109 |
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| 110 | [StorableConstructor]
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| 111 | private IslandGeneticAlgorithmMainLoop(bool deserializing) : base() { }
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| 112 | public IslandGeneticAlgorithmMainLoop()
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| 113 | : base() {
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| 114 | #region Create parameters
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| 115 | Parameters.Add(new ValueLookupParameter<IRandom>("Random", "A pseudo random number generator."));
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| 116 | Parameters.Add(new ValueLookupParameter<BoolValue>("Maximization", "True if the problem is a maximization problem, otherwise false."));
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| 117 | Parameters.Add(new SubScopesLookupParameter<DoubleValue>("Quality", "The value which represents the quality of a solution."));
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| 118 | Parameters.Add(new ValueLookupParameter<DoubleValue>("BestKnownQuality", "The best known quality value found so far."));
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| 119 | Parameters.Add(new ValueLookupParameter<IntValue>("NumberOfIslands", "The number of islands."));
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| 120 | Parameters.Add(new ValueLookupParameter<IntValue>("MigrationInterval", "The number of generations that should pass between migration phases."));
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| 121 | Parameters.Add(new ValueLookupParameter<PercentValue>("MigrationRate", "The proportion of individuals that should migrate between the islands."));
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| 122 | Parameters.Add(new ValueLookupParameter<IOperator>("Migrator", "The migration strategy."));
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| 123 | Parameters.Add(new ValueLookupParameter<IOperator>("EmigrantsSelector", "Selects the individuals that will be migrated."));
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| 124 | Parameters.Add(new ValueLookupParameter<IOperator>("ImmigrationReplacer", "Replaces some of the original population with the immigrants."));
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| 125 | Parameters.Add(new ValueLookupParameter<IntValue>("PopulationSize", "The size of the population of solutions."));
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| 126 | Parameters.Add(new ValueLookupParameter<IntValue>("MaximumMigrations", "The maximum number of migrations after which the operator should terminate."));
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| 127 | Parameters.Add(new ValueLookupParameter<IOperator>("Selector", "The operator used to select solutions for reproduction."));
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| 128 | Parameters.Add(new ValueLookupParameter<IOperator>("Crossover", "The operator used to cross solutions."));
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| 129 | Parameters.Add(new ValueLookupParameter<PercentValue>("MutationProbability", "The probability that the mutation operator is applied on a solution."));
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| 130 | Parameters.Add(new ValueLookupParameter<IOperator>("Mutator", "The operator used to mutate solutions."));
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| 131 | Parameters.Add(new ValueLookupParameter<IOperator>("Evaluator", "The operator used to evaluate solutions."));
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| 132 | Parameters.Add(new ValueLookupParameter<IntValue>("Elites", "The numer of elite solutions which are kept in each generation."));
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| 133 | Parameters.Add(new ValueLookupParameter<ResultCollection>("Results", "The results collection to store the results."));
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| 134 | Parameters.Add(new ValueLookupParameter<IOperator>("Visualizer", "The operator used to visualize solutions."));
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| 135 | Parameters.Add(new LookupParameter<IItem>("Visualization", "The item which represents the visualization of solutions."));
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| 136 | #endregion
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| 137 |
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| 138 | #region Create operators
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| 139 | VariableCreator variableCreator = new VariableCreator();
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| 140 | UniformSubScopesProcessor ussp0 = new UniformSubScopesProcessor();
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| 141 | VariableCreator resultCollectionCreator = new VariableCreator();
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| 142 | BestQualityMemorizer bestQualityMemorizer1 = new BestQualityMemorizer();
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| 143 | BestAverageWorstQualityCalculator bestAverageWorstQualityCalculator1 = new BestAverageWorstQualityCalculator();
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| 144 | BestQualityMemorizer bestQualityMemorizer2 = new BestQualityMemorizer();
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| 145 | BestAverageWorstQualityCalculator bestAverageWorstQualityCalculator2 = new BestAverageWorstQualityCalculator();
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| 146 | DataTableValuesCollector dataTableValuesCollector1 = new DataTableValuesCollector();
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| 147 | QualityDifferenceCalculator qualityDifferenceCalculator1 = new QualityDifferenceCalculator();
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| 148 | ResultsCollector resultsCollector = new ResultsCollector();
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| 149 | UniformSubScopesProcessor ussp1 = new UniformSubScopesProcessor();
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| 150 | GeneticAlgorithmMainLoop geneticAlgorithmMainLoop = new GeneticAlgorithmMainLoop();
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| 151 | Placeholder emigrantsSelector = new Placeholder();
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| 152 | Placeholder migrator = new Placeholder();
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| 153 | UniformSubScopesProcessor ussp2 = new UniformSubScopesProcessor();
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| 154 | Placeholder immigrationReplacer = new Placeholder();
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| 155 | IntCounter migrationsCounter = new IntCounter();
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| 156 | Comparator maxMigrationsComparator = new Comparator();
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| 157 | BestQualityMemorizer bestQualityMemorizer3 = new BestQualityMemorizer();
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| 158 | BestAverageWorstQualityCalculator bestAverageWorstQualityCalculator3 = new BestAverageWorstQualityCalculator();
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| 159 | DataTableValuesCollector dataTableValuesCollector2 = new DataTableValuesCollector();
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| 160 | QualityDifferenceCalculator qualityDifferenceCalculator2 = new QualityDifferenceCalculator();
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| 161 | ConditionalBranch migrationTerminationCondition = new ConditionalBranch();
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| 162 |
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| 163 | variableCreator.CollectedValues.Add(new ValueParameter<IntValue>("Migrations", new IntValue(0)));
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| 164 |
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| 165 | resultCollectionCreator.CollectedValues.Add(new ValueParameter<ResultCollection>("IslandResults", new ResultCollection()));
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| 166 |
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| 167 | bestQualityMemorizer1.BestQualityParameter.ActualName = "BestQuality";
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| 168 | bestQualityMemorizer1.MaximizationParameter.ActualName = MaximizationParameter.Name;
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| 169 | bestQualityMemorizer1.QualityParameter.ActualName = QualityParameter.Name;
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| 170 |
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| 171 | bestAverageWorstQualityCalculator1.AverageQualityParameter.ActualName = "CurrentAverageQuality";
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| 172 | bestAverageWorstQualityCalculator1.BestQualityParameter.ActualName = "CurrentBestQuality";
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| 173 | bestAverageWorstQualityCalculator1.MaximizationParameter.ActualName = MaximizationParameter.Name;
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| 174 | bestAverageWorstQualityCalculator1.QualityParameter.ActualName = QualityParameter.Name;
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| 175 | bestAverageWorstQualityCalculator1.WorstQualityParameter.ActualName = "CurrentWorstQuality";
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| 176 |
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| 177 | bestQualityMemorizer2.BestQualityParameter.ActualName = "BestQuality";
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| 178 | bestQualityMemorizer2.MaximizationParameter.ActualName = MaximizationParameter.Name;
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| 179 | bestQualityMemorizer2.QualityParameter.ActualName = "BestQuality";
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| 180 |
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| 181 | bestAverageWorstQualityCalculator2.AverageQualityParameter.ActualName = "CurrentAverageBestQuality";
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| 182 | bestAverageWorstQualityCalculator2.BestQualityParameter.ActualName = "CurrentBestBestQuality";
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| 183 | bestAverageWorstQualityCalculator2.MaximizationParameter.ActualName = MaximizationParameter.Name;
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| 184 | bestAverageWorstQualityCalculator2.QualityParameter.ActualName = "CurrentBestQuality";
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| 185 | bestAverageWorstQualityCalculator2.WorstQualityParameter.ActualName = "CurrentWorstBestQuality";
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| 186 |
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| 187 | dataTableValuesCollector1.CollectedValues.Add(new LookupParameter<DoubleValue>("Current Best BestQuality", null, "CurrentBestBestQuality"));
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| 188 | dataTableValuesCollector1.CollectedValues.Add(new LookupParameter<DoubleValue>("Current Average BestQuality", null, "CurrentAverageBestQuality"));
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| 189 | dataTableValuesCollector1.CollectedValues.Add(new LookupParameter<DoubleValue>("Current Worst BestQuality", null, "CurrentWorstBestQuality"));
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| 190 | dataTableValuesCollector1.CollectedValues.Add(new LookupParameter<DoubleValue>("Best Quality", null, "BestQuality"));
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| 191 | dataTableValuesCollector1.CollectedValues.Add(new LookupParameter<DoubleValue>("Best Known Quality", null, BestKnownQualityParameter.Name));
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| 192 | dataTableValuesCollector1.DataTableParameter.ActualName = "BestQualities";
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| 193 |
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| 194 | qualityDifferenceCalculator1.AbsoluteDifferenceParameter.ActualName = "AbsoluteDifferenceBestKnownToBest";
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| 195 | qualityDifferenceCalculator1.FirstQualityParameter.ActualName = BestKnownQualityParameter.Name;
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| 196 | qualityDifferenceCalculator1.RelativeDifferenceParameter.ActualName = "RelativeDifferenceBestKnownToBest";
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| 197 | qualityDifferenceCalculator1.SecondQualityParameter.ActualName = "BestQuality";
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| 198 |
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| 199 | resultsCollector.CollectedValues.Add(new LookupParameter<IntValue>("Migrations"));
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| 200 | resultsCollector.CollectedValues.Add(new LookupParameter<DoubleValue>("Current Best BestQuality", null, "CurrentBestBestQuality"));
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| 201 | resultsCollector.CollectedValues.Add(new LookupParameter<DoubleValue>("Current Average BestQuality", null, "CurrentAverageBestQuality"));
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| 202 | resultsCollector.CollectedValues.Add(new LookupParameter<DoubleValue>("Current Worst BestQuality", null, "CurrentWorstBestQuality"));
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| 203 | resultsCollector.CollectedValues.Add(new LookupParameter<DoubleValue>("Best Quality", null, "BestQuality"));
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| 204 | resultsCollector.CollectedValues.Add(new LookupParameter<DoubleValue>("Best Known Quality", null, BestKnownQualityParameter.Name));
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| 205 | resultsCollector.CollectedValues.Add(new LookupParameter<DoubleValue>("Absolute Difference of Best Known Quality to Best Quality", null, "AbsoluteDifferenceBestKnownToBest"));
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| 206 | resultsCollector.CollectedValues.Add(new LookupParameter<DoubleValue>("Relative Difference of Best Known Quality to Best Quality", null, "RelativeDifferenceBestKnownToBest"));
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| 207 | resultsCollector.CollectedValues.Add(new LookupParameter<DataTable>("BestQualities"));
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| 208 | resultsCollector.CollectedValues.Add(new SubScopesLookupParameter<ResultCollection>("IslandResults", "Result set for each island"));
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| 209 | resultsCollector.ResultsParameter.ActualName = ResultsParameter.Name;
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| 210 |
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| 211 | geneticAlgorithmMainLoop.BestKnownQualityParameter.ActualName = BestKnownQualityParameter.Name;
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| 212 | geneticAlgorithmMainLoop.MaximizationParameter.ActualName = MaximizationParameter.Name;
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| 213 | geneticAlgorithmMainLoop.QualityParameter.ActualName = QualityParameter.Name;
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| 214 | geneticAlgorithmMainLoop.SelectorParameter.ActualName = SelectorParameter.Name;
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| 215 | geneticAlgorithmMainLoop.CrossoverParameter.ActualName = CrossoverParameter.Name;
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| 216 | geneticAlgorithmMainLoop.ElitesParameter.ActualName = ElitesParameter.Name;
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| 217 | geneticAlgorithmMainLoop.MaximumGenerationsParameter.ActualName = MigrationIntervalParameter.Name;
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| 218 | geneticAlgorithmMainLoop.MutatorParameter.ActualName = MutatorParameter.Name;
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| 219 | geneticAlgorithmMainLoop.EvaluatorParameter.ActualName = EvaluatorParameter.Name;
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| 220 | geneticAlgorithmMainLoop.MutationProbabilityParameter.ActualName = MutationProbabilityParameter.Name;
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| 221 | geneticAlgorithmMainLoop.RandomParameter.ActualName = RandomParameter.Name;
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| 222 | geneticAlgorithmMainLoop.ResultsParameter.ActualName = "IslandResults";
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| 223 | geneticAlgorithmMainLoop.VisualizerParameter.ActualName = VisualizerParameter.Name;
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| 224 | geneticAlgorithmMainLoop.VisualizationParameter.ActualName = VisualizationParameter.Name;
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| 225 |
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| 226 | emigrantsSelector.Name = "Emigrants Selector (placeholder)";
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| 227 | emigrantsSelector.OperatorParameter.ActualName = EmigrantsSelectorParameter.Name;
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| 228 |
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| 229 | migrator.Name = "Migrator (placeholder)";
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| 230 | migrator.OperatorParameter.ActualName = MigratorParameter.Name;
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| 231 |
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| 232 | immigrationReplacer.Name = "Immigration Replacer (placeholder)";
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| 233 | immigrationReplacer.OperatorParameter.ActualName = ImmigrationReplacerParameter.Name;
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| 234 |
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| 235 | migrationsCounter.Name = "Migrations + 1";
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| 236 | migrationsCounter.IncrementParameter.Value = new IntValue(1);
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| 237 | migrationsCounter.ValueParameter.ActualName = "Migrations";
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| 238 |
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| 239 | maxMigrationsComparator.Name = "Migrations >= MaximumMigration ?";
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| 240 | maxMigrationsComparator.LeftSideParameter.ActualName = "Migrations";
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| 241 | maxMigrationsComparator.RightSideParameter.ActualName = MaximumMigrationsParameter.Name;
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| 242 | maxMigrationsComparator.Comparison.Value = ComparisonType.GreaterOrEqual;
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| 243 | maxMigrationsComparator.ResultParameter.ActualName = "MigrationTerminate";
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| 244 |
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| 245 | bestQualityMemorizer3.BestQualityParameter.ActualName = "BestQuality";
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| 246 | bestQualityMemorizer3.MaximizationParameter.ActualName = MaximizationParameter.Name;
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| 247 | bestQualityMemorizer3.QualityParameter.ActualName = "BestQuality";
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| 248 |
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| 249 | bestAverageWorstQualityCalculator3.AverageQualityParameter.ActualName = "CurrentAverageBestQuality";
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| 250 | bestAverageWorstQualityCalculator3.BestQualityParameter.ActualName = "CurrentBestBestQuality";
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| 251 | bestAverageWorstQualityCalculator3.MaximizationParameter.ActualName = MaximizationParameter.Name;
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| 252 | bestAverageWorstQualityCalculator3.QualityParameter.ActualName = "CurrentBestQuality";
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| 253 | bestAverageWorstQualityCalculator3.WorstQualityParameter.ActualName = "CurrentWorstBestQuality";
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| 254 |
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| 255 | dataTableValuesCollector2.CollectedValues.Add(new LookupParameter<DoubleValue>("Current Best BestQuality", null, "CurrentBestBestQuality"));
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| 256 | dataTableValuesCollector2.CollectedValues.Add(new LookupParameter<DoubleValue>("Current Average BestQuality", null, "CurrentAverageBestQuality"));
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| 257 | dataTableValuesCollector2.CollectedValues.Add(new LookupParameter<DoubleValue>("Current Worst BestQuality", null, "CurrentWorstBestQuality"));
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| 258 | dataTableValuesCollector2.CollectedValues.Add(new LookupParameter<DoubleValue>("Best Quality", null, "BestQuality"));
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| 259 | dataTableValuesCollector2.CollectedValues.Add(new LookupParameter<DoubleValue>("Best Known Quality", null, BestKnownQualityParameter.Name));
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| 260 | dataTableValuesCollector2.DataTableParameter.ActualName = "BestQualities";
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| 261 |
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| 262 | qualityDifferenceCalculator2.AbsoluteDifferenceParameter.ActualName = "AbsoluteDifferenceBestKnownToBest";
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| 263 | qualityDifferenceCalculator2.FirstQualityParameter.ActualName = BestKnownQualityParameter.Name;
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| 264 | qualityDifferenceCalculator2.RelativeDifferenceParameter.ActualName = "RelativeDifferenceBestKnownToBest";
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| 265 | qualityDifferenceCalculator2.SecondQualityParameter.ActualName = "BestQuality";
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| 266 |
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| 267 | migrationTerminationCondition.ConditionParameter.ActualName = "MigrationTerminate";
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| 268 | #endregion
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| 269 |
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| 270 | #region Create operator graph
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| 271 | OperatorGraph.InitialOperator = variableCreator;
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| 272 | variableCreator.Successor = ussp0;
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| 273 | ussp0.Operator = resultCollectionCreator;
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| 274 | ussp0.Successor = bestQualityMemorizer2;
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| 275 | resultCollectionCreator.Successor = bestQualityMemorizer1;
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| 276 | bestQualityMemorizer1.Successor = bestAverageWorstQualityCalculator1;
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| 277 | bestQualityMemorizer2.Successor = bestAverageWorstQualityCalculator2;
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| 278 | bestAverageWorstQualityCalculator2.Successor = dataTableValuesCollector1;
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| 279 | dataTableValuesCollector1.Successor = qualityDifferenceCalculator1;
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| 280 | qualityDifferenceCalculator1.Successor = resultsCollector;
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| 281 | resultsCollector.Successor = ussp1;
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| 282 | ussp1.Operator = geneticAlgorithmMainLoop;
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| 283 | ussp1.Successor = migrator;
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| 284 | geneticAlgorithmMainLoop.Successor = emigrantsSelector;
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| 285 | emigrantsSelector.Successor = null;
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| 286 | migrator.Successor = ussp2;
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| 287 | ussp2.Operator = immigrationReplacer;
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| 288 | ussp2.Successor = migrationsCounter;
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| 289 | immigrationReplacer.Successor = null;
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| 290 | migrationsCounter.Successor = maxMigrationsComparator;
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| 291 | maxMigrationsComparator.Successor = bestQualityMemorizer3;
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| 292 | bestQualityMemorizer3.Successor = bestAverageWorstQualityCalculator3;
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| 293 | bestAverageWorstQualityCalculator3.Successor = dataTableValuesCollector2;
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| 294 | dataTableValuesCollector2.Successor = qualityDifferenceCalculator2;
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| 295 | qualityDifferenceCalculator2.Successor = migrationTerminationCondition;
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| 296 | migrationTerminationCondition.FalseBranch = ussp1;
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| 297 | migrationTerminationCondition.TrueBranch = null;
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| 298 | migrationTerminationCondition.Successor = null;
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| 299 | #endregion
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| 300 | }
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| 301 | }
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| 302 | }
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