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source: trunk/sources/HeuristicLab.Algorithms.RAPGA/3.3/RAPGAMainLoop.cs @ 9569

Last change on this file since 9569 was 9569, checked in by mkommend, 11 years ago

#2038: Added reevaluation of elites in ES, IslandGA, IslandOSGA, OSGA, SASEGASA, and RAPGA.

File size: 23.6 KB
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1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using HeuristicLab.Common;
23using HeuristicLab.Core;
24using HeuristicLab.Data;
25using HeuristicLab.Operators;
26using HeuristicLab.Optimization;
27using HeuristicLab.Optimization.Operators;
28using HeuristicLab.Parameters;
29using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
30using HeuristicLab.Selection;
31
32namespace HeuristicLab.Algorithms.RAPGA {
33  /// <summary>
34  /// An operator which represents the main loop of a relevant alleles preserving genetic algorithm.
35  /// </summary>
36  [Item("RAPGAMainLoop", "An operator which represents the main loop of a relevant alleles preserving genetic algorithm.")]
37  [StorableClass]
38  public sealed class RAPGAMainLoop : AlgorithmOperator {
39    #region Parameter properties
40    public ValueLookupParameter<IRandom> RandomParameter {
41      get { return (ValueLookupParameter<IRandom>)Parameters["Random"]; }
42    }
43    public ValueLookupParameter<BoolValue> MaximizationParameter {
44      get { return (ValueLookupParameter<BoolValue>)Parameters["Maximization"]; }
45    }
46    public ScopeTreeLookupParameter<DoubleValue> QualityParameter {
47      get { return (ScopeTreeLookupParameter<DoubleValue>)Parameters["Quality"]; }
48    }
49    public ValueLookupParameter<IOperator> SelectorParameter {
50      get { return (ValueLookupParameter<IOperator>)Parameters["Selector"]; }
51    }
52    public ValueLookupParameter<IOperator> CrossoverParameter {
53      get { return (ValueLookupParameter<IOperator>)Parameters["Crossover"]; }
54    }
55    public ValueLookupParameter<PercentValue> MutationProbabilityParameter {
56      get { return (ValueLookupParameter<PercentValue>)Parameters["MutationProbability"]; }
57    }
58    public ValueLookupParameter<IOperator> MutatorParameter {
59      get { return (ValueLookupParameter<IOperator>)Parameters["Mutator"]; }
60    }
61    public ValueLookupParameter<IOperator> EvaluatorParameter {
62      get { return (ValueLookupParameter<IOperator>)Parameters["Evaluator"]; }
63    }
64    public ValueLookupParameter<IntValue> ElitesParameter {
65      get { return (ValueLookupParameter<IntValue>)Parameters["Elites"]; }
66    }
67    public IValueLookupParameter<BoolValue> ReevaluateElitesParameter {
68      get { return (IValueLookupParameter<BoolValue>)Parameters["ReevaluateElites"]; }
69    }
70    public ValueLookupParameter<IntValue> MaximumGenerationsParameter {
71      get { return (ValueLookupParameter<IntValue>)Parameters["MaximumGenerations"]; }
72    }
73    public ValueLookupParameter<VariableCollection> ResultsParameter {
74      get { return (ValueLookupParameter<VariableCollection>)Parameters["Results"]; }
75    }
76    public ValueLookupParameter<IOperator> AnalyzerParameter {
77      get { return (ValueLookupParameter<IOperator>)Parameters["Analyzer"]; }
78    }
79    public ValueLookupParameter<IntValue> EvaluatedSolutionsParameter {
80      get { return (ValueLookupParameter<IntValue>)Parameters["EvaluatedSolutions"]; }
81    }
82    public ValueLookupParameter<IntValue> PopulationSizeParameter {
83      get { return (ValueLookupParameter<IntValue>)Parameters["PopulationSize"]; }
84    }
85    public IValueLookupParameter<IntValue> MinimumPopulationSizeParameter {
86      get { return (IValueLookupParameter<IntValue>)Parameters["MinimumPopulationSize"]; }
87    }
88    public IValueLookupParameter<IntValue> MaximumPopulationSizeParameter {
89      get { return (IValueLookupParameter<IntValue>)Parameters["MaximumPopulationSize"]; }
90    }
91    public IValueLookupParameter<DoubleValue> ComparisonFactorParameter {
92      get { return (IValueLookupParameter<DoubleValue>)Parameters["ComparisonFactor"]; }
93    }
94    public IValueLookupParameter<IntValue> EffortParameter {
95      get { return (IValueLookupParameter<IntValue>)Parameters["Effort"]; }
96    }
97    public IValueLookupParameter<IntValue> BatchSizeParameter {
98      get { return (IValueLookupParameter<IntValue>)Parameters["BatchSize"]; }
99    }
100    public IValueLookupParameter<ISolutionSimilarityCalculator> SimilarityCalculatorParameter {
101      get { return (IValueLookupParameter<ISolutionSimilarityCalculator>)Parameters["SimilarityCalculator"]; }
102    }
103    private ScopeParameter CurrentScopeParameter {
104      get { return (ScopeParameter)Parameters["CurrentScope"]; }
105    }
106
107    public IScope CurrentScope {
108      get { return CurrentScopeParameter.ActualValue; }
109    }
110    #endregion
111
112    [StorableConstructor]
113    private RAPGAMainLoop(bool deserializing) : base(deserializing) { }
114    private RAPGAMainLoop(RAPGAMainLoop original, Cloner cloner) : base(original, cloner) { }
115    public RAPGAMainLoop()
116      : base() {
117      Initialize();
118    }
119    public override IDeepCloneable Clone(Cloner cloner) {
120      return new RAPGAMainLoop(this, cloner);
121    }
122
123    private void Initialize() {
124      #region Create parameters
125      Parameters.Add(new ValueLookupParameter<IRandom>("Random", "A pseudo random number generator."));
126      Parameters.Add(new ValueLookupParameter<BoolValue>("Maximization", "True if the problem is a maximization problem, otherwise false."));
127      Parameters.Add(new ScopeTreeLookupParameter<DoubleValue>("Quality", "The value which represents the quality of a solution."));
128      Parameters.Add(new ValueLookupParameter<IOperator>("Selector", "The operator used to select solutions for reproduction."));
129      Parameters.Add(new ValueLookupParameter<IOperator>("Crossover", "The operator used to cross solutions."));
130      Parameters.Add(new ValueLookupParameter<PercentValue>("MutationProbability", "The probability that the mutation operator is applied on a solution."));
131      Parameters.Add(new ValueLookupParameter<IOperator>("Mutator", "The operator used to mutate solutions."));
132      Parameters.Add(new ValueLookupParameter<IOperator>("Evaluator", "The operator used to evaluate solutions. This operator is executed in parallel, if an engine is used which supports parallelization."));
133      Parameters.Add(new ValueLookupParameter<IntValue>("Elites", "The numer of elite solutions which are kept in each generation."));
134      Parameters.Add(new ValueLookupParameter<BoolValue>("ReevaluateElites", "Flag to determine if elite individuals should be reevaluated (i.e., if stochastic fitness functions are used.)"));
135      Parameters.Add(new ValueLookupParameter<IntValue>("MaximumGenerations", "The maximum number of generations which should be processed."));
136      Parameters.Add(new ValueLookupParameter<VariableCollection>("Results", "The variable collection where results should be stored."));
137      Parameters.Add(new ValueLookupParameter<IOperator>("Analyzer", "The operator used to analyze each generation."));
138      Parameters.Add(new ValueLookupParameter<IntValue>("EvaluatedSolutions", "The number of times solutions have been evaluated."));
139      Parameters.Add(new ValueLookupParameter<IntValue>("PopulationSize", "The size of the population."));
140      Parameters.Add(new ValueLookupParameter<IntValue>("MinimumPopulationSize", "The minimum size of the population of solutions."));
141      Parameters.Add(new ValueLookupParameter<IntValue>("MaximumPopulationSize", "The maximum size of the population of solutions."));
142      Parameters.Add(new ValueLookupParameter<DoubleValue>("ComparisonFactor", "The comparison factor."));
143      Parameters.Add(new ValueLookupParameter<IntValue>("Effort", "The maximum number of offspring created in each generation."));
144      Parameters.Add(new ValueLookupParameter<IntValue>("BatchSize", "The number of children that should be created during one iteration of the offspring creation process."));
145      Parameters.Add(new ValueLookupParameter<ISolutionSimilarityCalculator>("SimilarityCalculator", "The operator used to calculate the similarity between two solutions."));
146      Parameters.Add(new ScopeParameter("CurrentScope", "The current scope which represents a population of solutions on which the genetic algorithm should be applied."));
147      #endregion
148
149      #region Create operators
150      VariableCreator variableCreator = new VariableCreator();
151      Assigner assigner1 = new Assigner();
152      ResultsCollector resultsCollector = new ResultsCollector();
153      Placeholder analyzer1 = new Placeholder();
154      Placeholder selector = new Placeholder();
155      SubScopesProcessor subScopesProcessor1 = new SubScopesProcessor();
156      ChildrenCreator childrenCreator = new ChildrenCreator();
157      UniformSubScopesProcessor uniformSubScopesProcessor = new UniformSubScopesProcessor();
158      Placeholder crossover = new Placeholder();
159      StochasticBranch stochasticBranch = new StochasticBranch();
160      Placeholder mutator = new Placeholder();
161      Placeholder evaluator = new Placeholder();
162      WeightedParentsQualityComparator weightedParentsQualityComparator = new WeightedParentsQualityComparator();
163      SubScopesRemover subScopesRemover = new SubScopesRemover();
164      IntCounter intCounter1 = new IntCounter();
165      IntCounter intCounter2 = new IntCounter();
166      ConditionalSelector conditionalSelector = new ConditionalSelector();
167      RightReducer rightReducer1 = new RightReducer();
168      DuplicatesSelector duplicateSelector = new DuplicatesSelector();
169      LeftReducer leftReducer1 = new LeftReducer();
170      ProgressiveOffspringPreserver progressiveOffspringSelector = new ProgressiveOffspringPreserver();
171      SubScopesCounter subScopesCounter2 = new SubScopesCounter();
172      ExpressionCalculator calculator1 = new ExpressionCalculator();
173      ConditionalBranch conditionalBranch1 = new ConditionalBranch();
174      Comparator comparator1 = new Comparator();
175      ConditionalBranch conditionalBranch2 = new ConditionalBranch();
176      LeftReducer leftReducer2 = new LeftReducer();
177      SubScopesProcessor subScopesProcessor2 = new SubScopesProcessor();
178      BestSelector bestSelector = new BestSelector();
179      RightReducer rightReducer2 = new RightReducer();
180      ScopeCleaner scopeCleaner = new ScopeCleaner();
181      ScopeRestorer scopeRestorer = new ScopeRestorer();
182      MergingReducer mergingReducer = new MergingReducer();
183      IntCounter intCounter3 = new IntCounter();
184      SubScopesCounter subScopesCounter3 = new SubScopesCounter();
185      ExpressionCalculator calculator2 = new ExpressionCalculator();
186      Comparator comparator2 = new Comparator();
187      ConditionalBranch conditionalBranch3 = new ConditionalBranch();
188      Placeholder analyzer2 = new Placeholder();
189      Comparator comparator3 = new Comparator();
190      ConditionalBranch conditionalBranch4 = new ConditionalBranch();
191      Comparator comparator4 = new Comparator();
192      ConditionalBranch conditionalBranch5 = new ConditionalBranch();
193      Assigner assigner3 = new Assigner();
194      Assigner assigner4 = new Assigner();
195      Assigner assigner5 = new Assigner();
196      ConditionalBranch reevaluateElitesBranch = new ConditionalBranch();
197      UniformSubScopesProcessor uniformSubScopesProcessor2 = new UniformSubScopesProcessor();
198      Placeholder evaluator2 = new Placeholder();
199      SubScopesCounter subScopesCounter4 = new SubScopesCounter();
200
201      variableCreator.CollectedValues.Add(new ValueParameter<IntValue>("Generations", new IntValue(0))); // Class RAPGA expects this to be called Generations
202      variableCreator.CollectedValues.Add(new ValueParameter<IntValue>("CurrentPopulationSize", new IntValue(0)));
203      variableCreator.CollectedValues.Add(new ValueParameter<IntValue>("NumberOfCreatedOffspring", new IntValue(0)));
204      variableCreator.CollectedValues.Add(new ValueParameter<IntValue>("NumberOfSuccessfulOffspring", new IntValue(0)));
205      variableCreator.CollectedValues.Add(new ValueParameter<ScopeList>("OffspringList", new ScopeList()));
206
207      assigner1.Name = "Initialize CurrentPopulationSize";
208      assigner1.LeftSideParameter.ActualName = "CurrentPopulationSize";
209      assigner1.RightSideParameter.ActualName = PopulationSizeParameter.Name;
210
211      resultsCollector.CollectedValues.Add(new LookupParameter<IntValue>("Generations"));
212      resultsCollector.CollectedValues.Add(new LookupParameter<IntValue>("CurrentPopulationSize"));
213      resultsCollector.ResultsParameter.ActualName = "Results";
214
215      analyzer1.Name = "Analyzer";
216      analyzer1.OperatorParameter.ActualName = "Analyzer";
217
218      selector.Name = "Selector";
219      selector.OperatorParameter.ActualName = "Selector";
220
221      childrenCreator.ParentsPerChild = new IntValue(2);
222
223      uniformSubScopesProcessor.Parallel.Value = true;
224
225      crossover.Name = "Crossover";
226      crossover.OperatorParameter.ActualName = "Crossover";
227
228      stochasticBranch.ProbabilityParameter.ActualName = "MutationProbability";
229      stochasticBranch.RandomParameter.ActualName = "Random";
230
231      mutator.Name = "Mutator";
232      mutator.OperatorParameter.ActualName = "Mutator";
233
234      evaluator.Name = "Evaluator";
235      evaluator.OperatorParameter.ActualName = "Evaluator";
236
237      weightedParentsQualityComparator.ComparisonFactorParameter.ActualName = ComparisonFactorParameter.Name;
238      weightedParentsQualityComparator.LeftSideParameter.ActualName = QualityParameter.Name;
239      weightedParentsQualityComparator.MaximizationParameter.ActualName = MaximizationParameter.Name;
240      weightedParentsQualityComparator.RightSideParameter.ActualName = QualityParameter.Name;
241      weightedParentsQualityComparator.ResultParameter.ActualName = "SuccessfulOffspring";
242
243      subScopesRemover.RemoveAllSubScopes = true;
244
245      intCounter1.Name = "Increment NumberOfCreatedOffspring";
246      intCounter1.ValueParameter.ActualName = "NumberOfCreatedOffspring";
247      intCounter1.Increment = null;
248      intCounter1.IncrementParameter.ActualName = BatchSizeParameter.Name;
249
250      intCounter2.Name = "Increment EvaluatedSolutions";
251      intCounter2.ValueParameter.ActualName = EvaluatedSolutionsParameter.Name;
252      intCounter2.Increment = null;
253      intCounter2.IncrementParameter.ActualName = BatchSizeParameter.Name;
254
255      conditionalSelector.ConditionParameter.ActualName = "SuccessfulOffspring";
256      conditionalSelector.ConditionParameter.Depth = 1;
257      conditionalSelector.CopySelected.Value = false;
258
259      duplicateSelector.CopySelected.Value = false;
260
261      progressiveOffspringSelector.OffspringListParameter.ActualName = "OffspringList";
262      progressiveOffspringSelector.ElitesParameter.ActualName = ElitesParameter.Name;
263      progressiveOffspringSelector.MaximumPopulationSizeParameter.ActualName = MaximumPopulationSizeParameter.Name;
264
265      subScopesCounter2.Name = "Count Successful Offspring";
266      subScopesCounter2.ValueParameter.ActualName = "NumberOfSuccessfulOffspring";
267
268      calculator1.Name = "NumberOfSuccessfulOffspring == MaximumPopulationSize - Elites";
269      calculator1.CollectedValues.Add(new ValueLookupParameter<IntValue>("NumberOfSuccessfulOffspring"));
270      calculator1.CollectedValues.Add(new ValueLookupParameter<IntValue>("MaximumPopulationSize"));
271      calculator1.CollectedValues.Add(new ValueLookupParameter<IntValue>("Elites"));
272      calculator1.ExpressionParameter.Value = new StringValue("NumberOfSuccessfulOffspring MaximumPopulationSize Elites - ==");
273      calculator1.ExpressionResultParameter.ActualName = "Break";
274
275      conditionalBranch1.Name = "Break?";
276      conditionalBranch1.ConditionParameter.ActualName = "Break";
277
278      comparator1.Name = "NumberOfCreatedOffspring >= Effort";
279      comparator1.Comparison = new Comparison(ComparisonType.GreaterOrEqual);
280      comparator1.LeftSideParameter.ActualName = "NumberOfCreatedOffspring";
281      comparator1.RightSideParameter.ActualName = EffortParameter.Name;
282      comparator1.ResultParameter.ActualName = "Break";
283
284      conditionalBranch2.Name = "Break?";
285      conditionalBranch2.ConditionParameter.ActualName = "Break";
286
287      bestSelector.CopySelected = new BoolValue(false);
288      bestSelector.MaximizationParameter.ActualName = MaximizationParameter.Name;
289      bestSelector.NumberOfSelectedSubScopesParameter.ActualName = "Elites";
290      bestSelector.QualityParameter.ActualName = QualityParameter.Name;
291
292      intCounter3.Name = "Increment Generations";
293      intCounter3.Increment = new IntValue(1);
294      intCounter3.ValueParameter.ActualName = "Generations";
295
296      subScopesCounter3.Name = "Update CurrentPopulationSize";
297      subScopesCounter3.ValueParameter.ActualName = "CurrentPopulationSize";
298      subScopesCounter3.AccumulateParameter.Value = new BoolValue(false);
299
300      calculator2.Name = "Evaluate ActualSelectionPressure";
301      calculator2.CollectedValues.Add(new ValueLookupParameter<IntValue>("NumberOfCreatedOffspring"));
302      calculator2.CollectedValues.Add(new ValueLookupParameter<IntValue>("Elites"));
303      calculator2.CollectedValues.Add(new ValueLookupParameter<IntValue>("CurrentPopulationSize"));
304      calculator2.ExpressionParameter.Value = new StringValue("NumberOfCreatedOffspring Elites + CurrentPopulationSize /");
305      calculator2.ExpressionResultParameter.ActualName = "ActualSelectionPressure";
306
307      comparator2.Name = "CurrentPopulationSize < 1";
308      comparator2.Comparison = new Comparison(ComparisonType.Less);
309      comparator2.LeftSideParameter.ActualName = "CurrentPopulationSize";
310      comparator2.RightSideParameter.Value = new IntValue(1);
311      comparator2.ResultParameter.ActualName = "Terminate";
312
313      conditionalBranch3.Name = "Terminate?";
314      conditionalBranch3.ConditionParameter.ActualName = "Terminate";
315
316      analyzer2.Name = "Analyzer";
317      analyzer2.OperatorParameter.ActualName = "Analyzer";
318
319      comparator3.Name = "Generations >= MaximumGenerations";
320      comparator3.Comparison = new Comparison(ComparisonType.GreaterOrEqual);
321      comparator3.LeftSideParameter.ActualName = "Generations";
322      comparator3.ResultParameter.ActualName = "Terminate";
323      comparator3.RightSideParameter.ActualName = MaximumGenerationsParameter.Name;
324
325      conditionalBranch4.Name = "Terminate?";
326      conditionalBranch4.ConditionParameter.ActualName = "Terminate";
327
328      comparator4.Name = "CurrentPopulationSize < MinimumPopulationSize";
329      comparator4.Comparison = new Comparison(ComparisonType.Less);
330      comparator4.LeftSideParameter.ActualName = "CurrentPopulationSize";
331      comparator4.RightSideParameter.ActualName = MinimumPopulationSizeParameter.Name;
332      comparator4.ResultParameter.ActualName = "Terminate";
333
334      conditionalBranch5.Name = "Terminate?";
335      conditionalBranch5.ConditionParameter.ActualName = "Terminate";
336
337      assigner3.Name = "Reset NumberOfCreatedOffspring";
338      assigner3.LeftSideParameter.ActualName = "NumberOfCreatedOffspring";
339      assigner3.RightSideParameter.Value = new IntValue(0);
340
341      assigner4.Name = "Reset NumberOfSuccessfulOffspring";
342      assigner4.LeftSideParameter.ActualName = "NumberOfSuccessfulOffspring";
343      assigner4.RightSideParameter.Value = new IntValue(0);
344
345      assigner5.Name = "Reset OffspringList";
346      assigner5.LeftSideParameter.ActualName = "OffspringList";
347      assigner5.RightSideParameter.Value = new ScopeList();
348
349      reevaluateElitesBranch.ConditionParameter.ActualName = "ReevaluateElites";
350      reevaluateElitesBranch.Name = "Reevaluate elites ?";
351
352      uniformSubScopesProcessor2.Parallel.Value = true;
353
354      evaluator2.Name = "Evaluator (placeholder)";
355      evaluator2.OperatorParameter.ActualName = EvaluatorParameter.Name;
356
357      subScopesCounter4.Name = "Increment EvaluatedSolutions";
358      subScopesCounter4.ValueParameter.ActualName = EvaluatedSolutionsParameter.Name;
359      #endregion
360
361      #region Create operator graph
362      OperatorGraph.InitialOperator = variableCreator;
363      variableCreator.Successor = assigner1;
364      assigner1.Successor = resultsCollector;
365      resultsCollector.Successor = analyzer1;
366      analyzer1.Successor = selector;
367      selector.Successor = subScopesProcessor1;
368      subScopesProcessor1.Operators.Add(new EmptyOperator());
369      subScopesProcessor1.Operators.Add(childrenCreator);
370      subScopesProcessor1.Successor = calculator1;
371      childrenCreator.Successor = uniformSubScopesProcessor;
372      uniformSubScopesProcessor.Operator = crossover;
373      uniformSubScopesProcessor.Successor = intCounter1;
374      crossover.Successor = stochasticBranch;
375      stochasticBranch.FirstBranch = mutator;
376      stochasticBranch.SecondBranch = null;
377      mutator.Successor = null;
378      stochasticBranch.Successor = evaluator;
379      evaluator.Successor = weightedParentsQualityComparator;
380      weightedParentsQualityComparator.Successor = subScopesRemover;
381      intCounter1.Successor = intCounter2;
382      intCounter2.Successor = conditionalSelector;
383      conditionalSelector.Successor = rightReducer1;
384      rightReducer1.Successor = duplicateSelector;
385      duplicateSelector.Successor = leftReducer1;
386      leftReducer1.Successor = progressiveOffspringSelector;
387      progressiveOffspringSelector.Successor = subScopesCounter2;
388      calculator1.Successor = conditionalBranch1;
389      conditionalBranch1.FalseBranch = comparator1;
390      conditionalBranch1.TrueBranch = subScopesProcessor2;
391      comparator1.Successor = conditionalBranch2;
392      conditionalBranch2.FalseBranch = leftReducer2;
393      conditionalBranch2.TrueBranch = subScopesProcessor2;
394      leftReducer2.Successor = selector;
395      subScopesProcessor2.Operators.Add(bestSelector);
396      subScopesProcessor2.Operators.Add(scopeCleaner);
397      subScopesProcessor2.Successor = mergingReducer;
398      bestSelector.Successor = rightReducer2;
399      rightReducer2.Successor = reevaluateElitesBranch;
400      reevaluateElitesBranch.TrueBranch = uniformSubScopesProcessor2;
401      uniformSubScopesProcessor2.Operator = evaluator2;
402      uniformSubScopesProcessor2.Successor = subScopesCounter4;
403      evaluator2.Successor = null;
404      subScopesCounter4.Successor = null;
405      reevaluateElitesBranch.FalseBranch = null;
406      reevaluateElitesBranch.Successor = null;
407      scopeCleaner.Successor = scopeRestorer;
408      mergingReducer.Successor = intCounter3;
409      intCounter3.Successor = subScopesCounter3;
410      subScopesCounter3.Successor = calculator2;
411      calculator2.Successor = comparator2;
412      comparator2.Successor = conditionalBranch3;
413      conditionalBranch3.FalseBranch = analyzer2;
414      conditionalBranch3.TrueBranch = null;
415      analyzer2.Successor = comparator3;
416      comparator3.Successor = conditionalBranch4;
417      conditionalBranch4.FalseBranch = comparator4;
418      conditionalBranch4.TrueBranch = null;
419      conditionalBranch4.Successor = null;
420      comparator4.Successor = conditionalBranch5;
421      conditionalBranch5.FalseBranch = assigner3;
422      conditionalBranch5.TrueBranch = null;
423      conditionalBranch5.Successor = null;
424      assigner3.Successor = assigner4;
425      assigner4.Successor = assigner5;
426      assigner5.Successor = selector;
427
428      #endregion
429    }
430
431    public override IOperation Apply() {
432      if (CrossoverParameter.ActualName == null)
433        return null;
434      return base.Apply();
435    }
436  }
437}
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