Changeset 14188 for stable/HeuristicLab.Algorithms.EvolutionStrategy

Timestamp:

07/22/16 20:46:45 (8 years ago)

Author:

swagner

Message:

#2526: Updated year of copyrights in license headers

Location:

stable/HeuristicLab.Algorithms.EvolutionStrategy/3.3

Files:

• EvolutionStrategy.cs (modified) (previous)
• EvolutionStrategyMainLoop.cs (modified) (1 diff)

stable/HeuristicLab.Algorithms.EvolutionStrategy/3.3/EvolutionStrategyMainLoop.cs

@@ -1 @@
-ണഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊഊ
+#region License Information
+/* HeuristicLab
+ * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
+ *
+ * This file is part of HeuristicLab.
+ *
+ * HeuristicLab is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * HeuristicLab is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using HeuristicLab.Common;
+using HeuristicLab.Core;
+using HeuristicLab.Data;
+using HeuristicLab.Operators;
+using HeuristicLab.Optimization.Operators;
+using HeuristicLab.Parameters;
+using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
+using HeuristicLab.Selection;
+
+namespace HeuristicLab.Algorithms.EvolutionStrategy {
+  /// <summary>
+  /// An operator which represents the main loop of an evolution strategy (EvolutionStrategy).
+  /// </summary>
+  [Item("EvolutionStrategyMainLoop", "An operator which represents the main loop of an evolution strategy (EvolutionStrategy).")]
+  [StorableClass]
+  public sealed class EvolutionStrategyMainLoop : AlgorithmOperator {
+    #region Parameter properties
+    public ValueLookupParameter<IRandom> RandomParameter {
+      get { return (ValueLookupParameter<IRandom>)Parameters["Random"]; }
+    }
+    public ValueLookupParameter<BoolValue> MaximizationParameter {
+      get { return (ValueLookupParameter<BoolValue>)Parameters["Maximization"]; }
+    }
+    public ScopeTreeLookupParameter<DoubleValue> QualityParameter {
+      get { return (ScopeTreeLookupParameter<DoubleValue>)Parameters["Quality"]; }
+    }
+    public ValueLookupParameter<DoubleValue> BestKnownQualityParameter {
+      get { return (ValueLookupParameter<DoubleValue>)Parameters["BestKnownQuality"]; }
+    }
+    public ValueLookupParameter<IntValue> PopulationSizeParameter {
+      get { return (ValueLookupParameter<IntValue>)Parameters["PopulationSize"]; }
+    }
+    public ValueLookupParameter<IntValue> ParentsPerChildParameter {
+      get { return (ValueLookupParameter<IntValue>)Parameters["ParentsPerChild"]; }
+    }
+    public ValueLookupParameter<IntValue> ChildrenParameter {
+      get { return (ValueLookupParameter<IntValue>)Parameters["Children"]; }
+    }
+    public ValueLookupParameter<BoolValue> PlusSelectionParameter {
+      get { return (ValueLookupParameter<BoolValue>)Parameters["PlusSelection"]; }
+    }
+    public IValueLookupParameter<BoolValue> ReevaluateElitesParameter {
+      get { return (IValueLookupParameter<BoolValue>)Parameters["ReevaluateElites"]; }
+    }
+    public ValueLookupParameter<IntValue> MaximumGenerationsParameter {
+      get { return (ValueLookupParameter<IntValue>)Parameters["MaximumGenerations"]; }
+    }
+    public ValueLookupParameter<IOperator> MutatorParameter {
+      get { return (ValueLookupParameter<IOperator>)Parameters["Mutator"]; }
+    }
+    public ValueLookupParameter<IOperator> RecombinatorParameter {
+      get { return (ValueLookupParameter<IOperator>)Parameters["Recombinator"]; }
+    }
+    public ValueLookupParameter<IOperator> EvaluatorParameter {
+      get { return (ValueLookupParameter<IOperator>)Parameters["Evaluator"]; }
+    }
+    public ValueLookupParameter<VariableCollection> ResultsParameter {
+      get { return (ValueLookupParameter<VariableCollection>)Parameters["Results"]; }
+    }
+    public ValueLookupParameter<IOperator> AnalyzerParameter {
+      get { return (ValueLookupParameter<IOperator>)Parameters["Analyzer"]; }
+    }
+    public LookupParameter<IntValue> EvaluatedSolutionsParameter {
+      get { return (LookupParameter<IntValue>)Parameters["EvaluatedSolutions"]; }
+    }
+    private ScopeParameter CurrentScopeParameter {
+      get { return (ScopeParameter)Parameters["CurrentScope"]; }
+    }
+    private ValueLookupParameter<IOperator> StrategyParameterManipulatorParameter {
+      get { return (ValueLookupParameter<IOperator>)Parameters["StrategyParameterManipulator"]; }
+    }
+    private ValueLookupParameter<IOperator> StrategyParameterCrossoverParameter {
+      get { return (ValueLookupParameter<IOperator>)Parameters["StrategyParameterCrossover"]; }
+    }
+
+    public IScope CurrentScope {
+      get { return CurrentScopeParameter.ActualValue; }
+    }
+    #endregion
+
+    [StorableConstructor]
+    private EvolutionStrategyMainLoop(bool deserializing) : base(deserializing) { }
+    private EvolutionStrategyMainLoop(EvolutionStrategyMainLoop original, Cloner cloner)
+      : base(original, cloner) {
+    }
+    public override IDeepCloneable Clone(Cloner cloner) {
+      return new EvolutionStrategyMainLoop(this, cloner);
+    }
+    public EvolutionStrategyMainLoop()
+      : base() {
+      Initialize();
+    }
+
+    [StorableHook(HookType.AfterDeserialization)]
+    private void AfterDeserialization() {
+      // BackwardsCompatibility3.3
+      #region Backwards compatible code, remove with 3.4
+      if (!Parameters.ContainsKey("ReevaluateElites")) {
+        Parameters.Add(new ValueLookupParameter<BoolValue>("ReevaluateElites", "Flag to determine if elite individuals should be reevaluated (i.e., if stochastic fitness functions are used.)"));
+      }
+      #endregion
+    }
+
+    private void Initialize() {
+      #region Create parameters
+      Parameters.Add(new ValueLookupParameter<IRandom>("Random", "A pseudo random number generator."));
+      Parameters.Add(new ValueLookupParameter<BoolValue>("Maximization", "True if the problem is a maximization problem, otherwise false."));
+      Parameters.Add(new ScopeTreeLookupParameter<DoubleValue>("Quality", "The value which represents the quality of a solution."));
+      Parameters.Add(new ValueLookupParameter<DoubleValue>("BestKnownQuality", "The best known quality value found so far."));
+      Parameters.Add(new ValueLookupParameter<IntValue>("PopulationSize", "µ (mu) - the size of the population."));
+      Parameters.Add(new ValueLookupParameter<IntValue>("ParentsPerChild", "ρ (rho) - how many parents should be recombined."));
+      Parameters.Add(new ValueLookupParameter<IntValue>("Children", "λ (lambda) - the size of the offspring population."));
+      Parameters.Add(new ValueLookupParameter<IntValue>("MaximumGenerations", "The maximum number of generations which should be processed."));
+      Parameters.Add(new ValueLookupParameter<BoolValue>("PlusSelection", "True for plus selection (elitist population), false for comma selection (non-elitist population)."));
+      Parameters.Add(new ValueLookupParameter<BoolValue>("ReevaluateElites", "Flag to determine if elite individuals should be reevaluated (i.e., if stochastic fitness functions are used.)"));
+      Parameters.Add(new ValueLookupParameter<IOperator>("Mutator", "The operator used to mutate solutions."));
+      Parameters.Add(new ValueLookupParameter<IOperator>("Recombinator", "The operator used to cross solutions."));
+      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."));
+      Parameters.Add(new ValueLookupParameter<VariableCollection>("Results", "The variable collection where results should be stored."));
+      Parameters.Add(new ValueLookupParameter<IOperator>("Analyzer", "The operator used to analyze each generation."));
+      Parameters.Add(new LookupParameter<IntValue>("EvaluatedSolutions", "The number of times solutions have been evaluated."));
+      Parameters.Add(new ScopeParameter("CurrentScope", "The current scope which represents a population of solutions on which the EvolutionStrategy should be applied."));
+      Parameters.Add(new ValueLookupParameter<IOperator>("StrategyParameterManipulator", "The operator to mutate the endogeneous strategy parameters."));
+      Parameters.Add(new ValueLookupParameter<IOperator>("StrategyParameterCrossover", "The operator to cross the endogeneous strategy parameters."));
+      #endregion
+
+      #region Create operators
+      VariableCreator variableCreator = new VariableCreator();
+      ResultsCollector resultsCollector1 = new ResultsCollector();
+      Placeholder analyzer1 = new Placeholder();
+      WithoutRepeatingBatchedRandomSelector selector = new WithoutRepeatingBatchedRandomSelector();
+      SubScopesProcessor subScopesProcessor1 = new SubScopesProcessor();
+      Comparator useRecombinationComparator = new Comparator();
+      ConditionalBranch useRecombinationBranch = new ConditionalBranch();
+      ChildrenCreator childrenCreator = new ChildrenCreator();
+      UniformSubScopesProcessor uniformSubScopesProcessor1 = new UniformSubScopesProcessor();
+      Placeholder recombinator = new Placeholder();
+      Placeholder strategyRecombinator = new Placeholder();
+      Placeholder strategyMutator1 = new Placeholder();
+      Placeholder mutator1 = new Placeholder();
+      SubScopesRemover subScopesRemover = new SubScopesRemover();
+      UniformSubScopesProcessor uniformSubScopesProcessor2 = new UniformSubScopesProcessor();
+      Placeholder strategyMutator2 = new Placeholder();
+      Placeholder mutator2 = new Placeholder();
+      UniformSubScopesProcessor uniformSubScopesProcessor3 = new UniformSubScopesProcessor();
+      Placeholder evaluator = new Placeholder();
+      SubScopesCounter subScopesCounter = new SubScopesCounter();
+      ConditionalBranch plusOrCommaReplacementBranch = new ConditionalBranch();
+      MergingReducer plusReplacement = new MergingReducer();
+      RightReducer commaReplacement = new RightReducer();
+      BestSelector bestSelector = new BestSelector();
+      RightReducer rightReducer = new RightReducer();
+      IntCounter intCounter = new IntCounter();
+      Comparator comparator = new Comparator();
+      Placeholder analyzer2 = new Placeholder();
+      ConditionalBranch conditionalBranch = new ConditionalBranch();
+      ConditionalBranch reevaluateElitesBranch = new ConditionalBranch();
+      SubScopesProcessor subScopesProcessor2 = new SubScopesProcessor();
+      UniformSubScopesProcessor uniformSubScopesProcessor4 = new UniformSubScopesProcessor();
+      Placeholder evaluator2 = new Placeholder();
+      SubScopesCounter subScopesCounter2 = new SubScopesCounter();
+
+
+      variableCreator.CollectedValues.Add(new ValueParameter<IntValue>("Generations", new IntValue(0))); // Class EvolutionStrategy expects this to be called Generations
+
+      resultsCollector1.CollectedValues.Add(new LookupParameter<IntValue>("Generations"));
+      resultsCollector1.ResultsParameter.ActualName = "Results";
+
+      analyzer1.Name = "Analyzer (placeholder)";
+      analyzer1.OperatorParameter.ActualName = AnalyzerParameter.Name;
+
+      selector.Name = "ES Random Selector";
+      selector.RandomParameter.ActualName = RandomParameter.Name;
+      selector.ParentsPerChildParameter.ActualName = ParentsPerChildParameter.Name;
+      selector.ChildrenParameter.ActualName = ChildrenParameter.Name;
+
+      useRecombinationComparator.Name = "ParentsPerChild > 1";
+      useRecombinationComparator.LeftSideParameter.ActualName = ParentsPerChildParameter.Name;
+      useRecombinationComparator.RightSideParameter.Value = new IntValue(1);
+      useRecombinationComparator.Comparison = new Comparison(ComparisonType.Greater);
+      useRecombinationComparator.ResultParameter.ActualName = "UseRecombination";
+
+      useRecombinationBranch.Name = "Use Recombination?";
+      useRecombinationBranch.ConditionParameter.ActualName = "UseRecombination";
+
+      childrenCreator.ParentsPerChild = null;
+      childrenCreator.ParentsPerChildParameter.ActualName = ParentsPerChildParameter.Name;
+
+      recombinator.Name = "Recombinator (placeholder)";
+      recombinator.OperatorParameter.ActualName = RecombinatorParameter.Name;
+
+      strategyRecombinator.Name = "Strategy Parameter Recombinator (placeholder)";
+      strategyRecombinator.OperatorParameter.ActualName = StrategyParameterCrossoverParameter.Name;
+
+      strategyMutator1.Name = "Strategy Parameter Manipulator (placeholder)";
+      strategyMutator1.OperatorParameter.ActualName = StrategyParameterManipulatorParameter.Name;
+
+      mutator1.Name = "Mutator (placeholder)";
+      mutator1.OperatorParameter.ActualName = MutatorParameter.Name;
+
+      subScopesRemover.RemoveAllSubScopes = true;
+
+      strategyMutator2.Name = "Strategy Parameter Manipulator (placeholder)";
+      strategyMutator2.OperatorParameter.ActualName = StrategyParameterManipulatorParameter.Name;
+
+      mutator2.Name = "Mutator (placeholder)";
+      mutator2.OperatorParameter.ActualName = MutatorParameter.Name;
+
+      uniformSubScopesProcessor3.Parallel.Value = true;
+
+      evaluator.Name = "Evaluator (placeholder)";
+      evaluator.OperatorParameter.ActualName = EvaluatorParameter.Name;
+
+      subScopesCounter.Name = "Increment EvaluatedSolutions";
+      subScopesCounter.ValueParameter.ActualName = EvaluatedSolutionsParameter.Name;
+
+      plusOrCommaReplacementBranch.ConditionParameter.ActualName = PlusSelectionParameter.Name;
+
+      bestSelector.CopySelected = new BoolValue(false);
+      bestSelector.MaximizationParameter.ActualName = MaximizationParameter.Name;
+      bestSelector.NumberOfSelectedSubScopesParameter.ActualName = PopulationSizeParameter.Name;
+      bestSelector.QualityParameter.ActualName = QualityParameter.Name;
+
+      intCounter.Increment = new IntValue(1);
+      intCounter.ValueParameter.ActualName = "Generations";
+
+      comparator.Comparison = new Comparison(ComparisonType.GreaterOrEqual);
+      comparator.LeftSideParameter.ActualName = "Generations";
+      comparator.ResultParameter.ActualName = "Terminate";
+      comparator.RightSideParameter.ActualName = MaximumGenerationsParameter.Name;
+
+      analyzer2.Name = "Analyzer (placeholder)";
+      analyzer2.OperatorParameter.ActualName = AnalyzerParameter.Name;
+
+      conditionalBranch.ConditionParameter.ActualName = "Terminate";
+
+      reevaluateElitesBranch.ConditionParameter.ActualName = "ReevaluateElites";
+      reevaluateElitesBranch.Name = "Reevaluate elites ?";
+
+      uniformSubScopesProcessor4.Parallel.Value = true;
+
+      evaluator2.Name = "Evaluator (placeholder)";
+      evaluator2.OperatorParameter.ActualName = EvaluatorParameter.Name;
+
+      subScopesCounter2.Name = "Increment EvaluatedSolutions";
+      subScopesCounter2.ValueParameter.ActualName = EvaluatedSolutionsParameter.Name;
+      #endregion
+
+      #region Create operator graph
+      OperatorGraph.InitialOperator = variableCreator;
+      variableCreator.Successor = resultsCollector1;
+      resultsCollector1.Successor = analyzer1;
+      analyzer1.Successor = selector;
+      selector.Successor = subScopesProcessor1;
+      subScopesProcessor1.Operators.Add(new EmptyOperator());
+      subScopesProcessor1.Operators.Add(useRecombinationComparator);
+      subScopesProcessor1.Successor = plusOrCommaReplacementBranch;
+      useRecombinationComparator.Successor = useRecombinationBranch;
+      useRecombinationBranch.TrueBranch = childrenCreator;
+      useRecombinationBranch.FalseBranch = uniformSubScopesProcessor2;
+      useRecombinationBranch.Successor = uniformSubScopesProcessor3;
+      childrenCreator.Successor = uniformSubScopesProcessor1;
+      uniformSubScopesProcessor1.Operator = recombinator;
+      uniformSubScopesProcessor1.Successor = null;
+      recombinator.Successor = strategyRecombinator;
+      strategyRecombinator.Successor = strategyMutator1;
+      strategyMutator1.Successor = mutator1;
+      mutator1.Successor = subScopesRemover;
+      subScopesRemover.Successor = null;
+      uniformSubScopesProcessor2.Operator = strategyMutator2;
+      uniformSubScopesProcessor2.Successor = null;
+      strategyMutator2.Successor = mutator2;
+      mutator2.Successor = null;
+      uniformSubScopesProcessor3.Operator = evaluator;
+      uniformSubScopesProcessor3.Successor = subScopesCounter;
+      evaluator.Successor = null;
+      subScopesCounter.Successor = null;
+
+      plusOrCommaReplacementBranch.TrueBranch = reevaluateElitesBranch;
+      reevaluateElitesBranch.TrueBranch = subScopesProcessor2;
+      reevaluateElitesBranch.FalseBranch = null;
+      subScopesProcessor2.Operators.Add(uniformSubScopesProcessor4);
+      subScopesProcessor2.Operators.Add(new EmptyOperator());
+      uniformSubScopesProcessor4.Operator = evaluator2;
+      uniformSubScopesProcessor4.Successor = subScopesCounter2;
+      subScopesCounter2.Successor = null;
+      reevaluateElitesBranch.Successor = plusReplacement;
+
+      plusOrCommaReplacementBranch.FalseBranch = commaReplacement;
+      plusOrCommaReplacementBranch.Successor = bestSelector;
+      bestSelector.Successor = rightReducer;
+      rightReducer.Successor = intCounter;
+      intCounter.Successor = comparator;
+      comparator.Successor = analyzer2;
+      analyzer2.Successor = conditionalBranch;
+      conditionalBranch.FalseBranch = selector;
+      conditionalBranch.TrueBranch = null;
+      conditionalBranch.Successor = null;
+      #endregion
+    }
+
+    public override IOperation Apply() {
+      if (MutatorParameter.ActualValue == null)
+        return null;
+      return base.Apply();
+    }
+  }
+}