[3150] | 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.Collections.ObjectModel;
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| 25 | using System.Drawing;
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| 26 | using System.Linq;
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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.Encodings.RealVectorEncoding;
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| 31 | using HeuristicLab.Optimization;
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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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[3647] | 35 | using HeuristicLab.Problems.TestFunctions.Analyzers;
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[3150] | 36 |
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[3170] | 37 | namespace HeuristicLab.Problems.TestFunctions {
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[3221] | 38 | [Item("Single Objective Test Function", "Test function with real valued inputs and a single objective.")]
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[3150] | 39 | [StorableClass]
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| 40 | [Creatable("Problems")]
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[3170] | 41 | public sealed class SingleObjectiveTestFunctionProblem : ParameterizedNamedItem, ISingleObjectiveProblem {
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[3336] | 42 | [Storable]
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[3450] | 43 | private StdDevStrategyVectorCreator strategyVectorCreator;
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[3336] | 44 | [Storable]
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[3450] | 45 | private StdDevStrategyVectorCrossover strategyVectorCrossover;
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[3336] | 46 | [Storable]
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[3450] | 47 | private StdDevStrategyVectorManipulator strategyVectorManipulator;
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[3336] | 48 |
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[3150] | 49 | public override Image ItemImage {
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| 50 | get { return HeuristicLab.Common.Resources.VS2008ImageLibrary.Type; }
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| 51 | }
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| 52 |
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| 53 | #region Parameter Properties
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| 54 | public ValueParameter<BoolValue> MaximizationParameter {
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| 55 | get { return (ValueParameter<BoolValue>)Parameters["Maximization"]; }
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| 56 | }
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| 57 | IParameter ISingleObjectiveProblem.MaximizationParameter {
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| 58 | get { return MaximizationParameter; }
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| 59 | }
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| 60 | public ValueParameter<DoubleMatrix> BoundsParameter {
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| 61 | get { return (ValueParameter<DoubleMatrix>)Parameters["Bounds"]; }
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| 62 | }
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| 63 | public ValueParameter<IntValue> ProblemSizeParameter {
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| 64 | get { return (ValueParameter<IntValue>)Parameters["ProblemSize"]; }
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| 65 | }
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| 66 | public ValueParameter<IRealVectorCreator> SolutionCreatorParameter {
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| 67 | get { return (ValueParameter<IRealVectorCreator>)Parameters["SolutionCreator"]; }
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| 68 | }
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| 69 | IParameter IProblem.SolutionCreatorParameter {
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| 70 | get { return SolutionCreatorParameter; }
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| 71 | }
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[3170] | 72 | public ValueParameter<ISingleObjectiveTestFunctionProblemEvaluator> EvaluatorParameter {
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| 73 | get { return (ValueParameter<ISingleObjectiveTestFunctionProblemEvaluator>)Parameters["Evaluator"]; }
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[3150] | 74 | }
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| 75 | IParameter IProblem.EvaluatorParameter {
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| 76 | get { return EvaluatorParameter; }
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| 77 | }
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| 78 | public OptionalValueParameter<DoubleValue> BestKnownQualityParameter {
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| 79 | get { return (OptionalValueParameter<DoubleValue>)Parameters["BestKnownQuality"]; }
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| 80 | }
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| 81 | IParameter ISingleObjectiveProblem.BestKnownQualityParameter {
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| 82 | get { return BestKnownQualityParameter; }
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| 83 | }
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| 84 | #endregion
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| 85 |
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| 86 | #region Properties
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[3154] | 87 | public BoolValue Maximization {
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| 88 | get { return MaximizationParameter.Value; }
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| 89 | set { MaximizationParameter.Value = value; }
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| 90 | }
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[3150] | 91 | public DoubleMatrix Bounds {
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| 92 | get { return BoundsParameter.Value; }
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| 93 | set { BoundsParameter.Value = value; }
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| 94 | }
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| 95 | public IntValue ProblemSize {
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| 96 | get { return ProblemSizeParameter.Value; }
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| 97 | set { ProblemSizeParameter.Value = value; }
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| 98 | }
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| 99 | public IRealVectorCreator SolutionCreator {
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| 100 | get { return SolutionCreatorParameter.Value; }
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| 101 | set { SolutionCreatorParameter.Value = value; }
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| 102 | }
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| 103 | ISolutionCreator IProblem.SolutionCreator {
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| 104 | get { return SolutionCreatorParameter.Value; }
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| 105 | }
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[3170] | 106 | public ISingleObjectiveTestFunctionProblemEvaluator Evaluator {
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[3150] | 107 | get { return EvaluatorParameter.Value; }
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| 108 | set { EvaluatorParameter.Value = value; }
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| 109 | }
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| 110 | ISingleObjectiveEvaluator ISingleObjectiveProblem.Evaluator {
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| 111 | get { return EvaluatorParameter.Value; }
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| 112 | }
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| 113 | IEvaluator IProblem.Evaluator {
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| 114 | get { return EvaluatorParameter.Value; }
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| 115 | }
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| 116 | public DoubleValue BestKnownQuality {
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| 117 | get { return BestKnownQualityParameter.Value; }
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| 118 | set { BestKnownQualityParameter.Value = value; }
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| 119 | }
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[3187] | 120 | private List<IOperator> operators;
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[3150] | 121 | public IEnumerable<IOperator> Operators {
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[3187] | 122 | get { return operators; }
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[3150] | 123 | }
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[3647] | 124 | private IEnumerable<IBestSingleObjectiveTestFunctionSolutionAnalyzer> BestSingleObjectiveTestFunctionSolutionAnalyzers {
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| 125 | get { return operators.OfType<IBestSingleObjectiveTestFunctionSolutionAnalyzer>(); }
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| 126 | }
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[3150] | 127 | #endregion
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| 128 |
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| 129 | [StorableConstructor]
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[3170] | 130 | private SingleObjectiveTestFunctionProblem(bool deserializing) : base() { }
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| 131 | public SingleObjectiveTestFunctionProblem()
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[3150] | 132 | : base() {
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| 133 | UniformRandomRealVectorCreator creator = new UniformRandomRealVectorCreator();
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| 134 | AckleyEvaluator evaluator = new AckleyEvaluator();
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| 135 |
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| 136 | Parameters.Add(new ValueParameter<BoolValue>("Maximization", "Set to false as most test functions are minimization problems.", new BoolValue(evaluator.Maximization)));
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| 137 | Parameters.Add(new ValueParameter<DoubleMatrix>("Bounds", "The lower and upper bounds in each dimension.", evaluator.Bounds));
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| 138 | Parameters.Add(new ValueParameter<IntValue>("ProblemSize", "The dimension of the problem.", new IntValue(2)));
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| 139 | Parameters.Add(new ValueParameter<IRealVectorCreator>("SolutionCreator", "The operator which should be used to create new TSP solutions.", creator));
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[3170] | 140 | Parameters.Add(new ValueParameter<ISingleObjectiveTestFunctionProblemEvaluator>("Evaluator", "The operator which should be used to evaluate TSP solutions.", evaluator));
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[3150] | 141 | Parameters.Add(new OptionalValueParameter<DoubleValue>("BestKnownQuality", "The quality of the best known solution of this TSP instance.", new DoubleValue(evaluator.BestKnownQuality)));
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| 142 |
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[3450] | 143 | strategyVectorCreator = new StdDevStrategyVectorCreator();
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[3336] | 144 | strategyVectorCreator.LengthParameter.ActualName = ProblemSizeParameter.Name;
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[3450] | 145 | strategyVectorCrossover = new StdDevStrategyVectorCrossover();
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| 146 | strategyVectorManipulator = new StdDevStrategyVectorManipulator();
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| 147 | strategyVectorManipulator.LearningRateParameter.Value = new DoubleValue(0.5);
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| 148 | strategyVectorManipulator.GeneralLearningRateParameter.Value = new DoubleValue(0.5);
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[3336] | 149 |
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[3150] | 150 | creator.RealVectorParameter.ActualName = "Point";
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| 151 | ParameterizeSolutionCreator();
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| 152 | ParameterizeEvaluator();
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| 153 |
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| 154 | Initialize();
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| 155 | }
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| 156 |
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| 157 | public override IDeepCloneable Clone(Cloner cloner) {
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[3170] | 158 | SingleObjectiveTestFunctionProblem clone = (SingleObjectiveTestFunctionProblem)base.Clone(cloner);
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[3150] | 159 | clone.Initialize();
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| 160 | return clone;
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| 161 | }
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| 162 |
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| 163 | #region Events
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| 164 | public event EventHandler SolutionCreatorChanged;
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| 165 | private void OnSolutionCreatorChanged() {
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| 166 | if (SolutionCreatorChanged != null)
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| 167 | SolutionCreatorChanged(this, EventArgs.Empty);
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| 168 | }
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| 169 | public event EventHandler EvaluatorChanged;
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| 170 | private void OnEvaluatorChanged() {
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| 171 | if (EvaluatorChanged != null)
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| 172 | EvaluatorChanged(this, EventArgs.Empty);
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| 173 | }
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| 174 | public event EventHandler OperatorsChanged;
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| 175 | private void OnOperatorsChanged() {
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| 176 | if (OperatorsChanged != null)
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| 177 | OperatorsChanged(this, EventArgs.Empty);
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| 178 | }
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| 179 | private void ProblemSizeParameter_ValueChanged(object sender, EventArgs e) {
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| 180 | ProblemSize.ValueChanged += new EventHandler(ProblemSize_ValueChanged);
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| 181 | ProblemSize_ValueChanged(null, EventArgs.Empty);
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| 182 | }
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| 183 | private void ProblemSize_ValueChanged(object sender, EventArgs e) {
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[3336] | 184 | if (ProblemSize.Value < 1) ProblemSize.Value = 1;
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[3150] | 185 | ParameterizeSolutionCreator();
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[3336] | 186 | strategyVectorManipulator.GeneralLearningRateParameter.Value = new DoubleValue(1.0 / Math.Sqrt(2 * ProblemSize.Value));
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| 187 | strategyVectorManipulator.LearningRateParameter.Value = new DoubleValue(1.0 / Math.Sqrt(2 * Math.Sqrt(ProblemSize.Value)));
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[3150] | 188 | }
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| 189 | private void SolutionCreatorParameter_ValueChanged(object sender, EventArgs e) {
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| 190 | ParameterizeSolutionCreator();
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[3647] | 191 | ParameterizeAnalyzers();
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[3150] | 192 | SolutionCreator_RealVectorParameter_ActualNameChanged(null, EventArgs.Empty);
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| 193 | }
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| 194 | private void SolutionCreator_RealVectorParameter_ActualNameChanged(object sender, EventArgs e) {
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| 195 | ParameterizeEvaluator();
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| 196 | ParameterizeOperators();
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[3647] | 197 | ParameterizeAnalyzers();
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[3150] | 198 | }
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| 199 | private void EvaluatorParameter_ValueChanged(object sender, EventArgs e) {
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| 200 | ParameterizeEvaluator();
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[3187] | 201 | UpdateMoveEvaluators();
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[3647] | 202 | ParameterizeAnalyzers();
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[3154] | 203 | Maximization.Value = Evaluator.Maximization;
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| 204 | BoundsParameter.Value = Evaluator.Bounds;
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| 205 | if (ProblemSize.Value < Evaluator.MinimumProblemSize)
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| 206 | ProblemSize.Value = Evaluator.MinimumProblemSize;
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| 207 | else if (ProblemSize.Value > Evaluator.MaximumProblemSize)
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| 208 | ProblemSize.Value = Evaluator.MaximumProblemSize;
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| 209 | BestKnownQuality = new DoubleValue(Evaluator.BestKnownQuality);
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[3150] | 210 | Evaluator_QualityParameter_ActualNameChanged(null, EventArgs.Empty);
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| 211 | }
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| 212 | private void Evaluator_QualityParameter_ActualNameChanged(object sender, EventArgs e) {
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| 213 | ParameterizeOperators();
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| 214 | }
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[3154] | 215 | private void BoundsParameter_ValueChanged(object sender, EventArgs e) {
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| 216 | Bounds.ToStringChanged += new EventHandler(Bounds_ToStringChanged);
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| 217 | Bounds_ToStringChanged(null, EventArgs.Empty);
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| 218 | }
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| 219 | private void Bounds_ToStringChanged(object sender, EventArgs e) {
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| 220 | if (Bounds.Columns != 2 || Bounds.Rows < 1)
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| 221 | Bounds = new DoubleMatrix(1, 2);
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| 222 | }
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| 223 | private void Bounds_ItemChanged(object sender, EventArgs<int, int> e) {
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| 224 | if (e.Value2 == 0 && Bounds[e.Value, 1] <= Bounds[e.Value, 0])
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| 225 | Bounds[e.Value, 1] = Bounds[e.Value, 0] + 0.1;
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| 226 | if (e.Value2 == 1 && Bounds[e.Value, 0] >= Bounds[e.Value, 1])
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| 227 | Bounds[e.Value, 0] = Bounds[e.Value, 1] - 0.1;
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| 228 | }
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[3187] | 229 | private void MoveGenerator_AdditiveMoveParameter_ActualNameChanged(object sender, EventArgs e) {
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| 230 | string name = ((ILookupParameter<AdditiveMove>)sender).ActualName;
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| 231 | foreach (IAdditiveRealVectorMoveOperator op in Operators.OfType<IAdditiveRealVectorMoveOperator>()) {
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| 232 | op.AdditiveMoveParameter.ActualName = name;
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| 233 | }
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[3182] | 234 | }
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[3318] | 235 | private void SphereEvaluator_Parameter_ValueChanged(object sender, EventArgs e) {
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| 236 | SphereEvaluator eval = (Evaluator as SphereEvaluator);
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| 237 | if (eval != null) {
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| 238 | foreach (ISphereMoveEvaluator op in Operators.OfType<ISphereMoveEvaluator>()) {
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| 239 | op.C = eval.C;
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| 240 | op.Alpha = eval.Alpha;
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| 241 | }
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| 242 | }
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| 243 | }
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| 244 | private void RastriginEvaluator_Parameter_ValueChanged(object sender, EventArgs e) {
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| 245 | RastriginEvaluator eval = (Evaluator as RastriginEvaluator);
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| 246 | if (eval != null) {
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| 247 | foreach (IRastriginMoveEvaluator op in Operators.OfType<IRastriginMoveEvaluator>()) {
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| 248 | op.A = eval.A;
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| 249 | }
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| 250 | }
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| 251 | }
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[3336] | 252 | private void strategyVectorCreator_BoundsParameter_ValueChanged(object sender, EventArgs e) {
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| 253 | strategyVectorManipulator.BoundsParameter.Value = strategyVectorCreator.BoundsParameter.Value;
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| 254 | }
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| 255 | private void strategyVectorCreator_StrategyParameterParameter_ActualNameChanged(object sender, EventArgs e) {
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| 256 | string name = strategyVectorCreator.StrategyParameterParameter.ActualName;
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| 257 | strategyVectorCrossover.ParentsParameter.ActualName = name;
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| 258 | strategyVectorCrossover.StrategyParameterParameter.ActualName = name;
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| 259 | strategyVectorManipulator.StrategyParameterParameter.ActualName = name;
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| 260 | }
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[3150] | 261 | #endregion
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| 262 |
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| 263 | #region Helpers
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| 264 | [StorableHook(HookType.AfterDeserialization)]
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| 265 | private void Initialize() {
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| 266 | InitializeOperators();
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| 267 | ProblemSizeParameter.ValueChanged += new EventHandler(ProblemSizeParameter_ValueChanged);
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| 268 | ProblemSize.ValueChanged += new EventHandler(ProblemSize_ValueChanged);
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[3154] | 269 | BoundsParameter.ValueChanged += new EventHandler(BoundsParameter_ValueChanged);
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| 270 | Bounds.ToStringChanged += new EventHandler(Bounds_ToStringChanged);
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| 271 | Bounds.ItemChanged += new EventHandler<EventArgs<int, int>>(Bounds_ItemChanged);
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[3150] | 272 | SolutionCreatorParameter.ValueChanged += new EventHandler(SolutionCreatorParameter_ValueChanged);
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| 273 | SolutionCreator.RealVectorParameter.ActualNameChanged += new EventHandler(SolutionCreator_RealVectorParameter_ActualNameChanged);
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| 274 | EvaluatorParameter.ValueChanged += new EventHandler(EvaluatorParameter_ValueChanged);
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| 275 | Evaluator.QualityParameter.ActualNameChanged += new EventHandler(Evaluator_QualityParameter_ActualNameChanged);
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[3336] | 276 | strategyVectorCreator.BoundsParameter.ValueChanged += new EventHandler(strategyVectorCreator_BoundsParameter_ValueChanged);
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| 277 | strategyVectorCreator.StrategyParameterParameter.ActualNameChanged += new EventHandler(strategyVectorCreator_StrategyParameterParameter_ActualNameChanged);
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[3150] | 278 | }
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[3647] | 279 | private void ParameterizeAnalyzers() {
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| 280 | foreach (IBestSingleObjectiveTestFunctionSolutionAnalyzer analyzer in BestSingleObjectiveTestFunctionSolutionAnalyzers) {
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| 281 | analyzer.RealVectorParameter.ActualName = SolutionCreator.RealVectorParameter.ActualName;
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| 282 | analyzer.ResultsParameter.ActualName = "Results";
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| 283 | }
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| 284 | }
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[3150] | 285 | private void InitializeOperators() {
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[3187] | 286 | operators = new List<IOperator>();
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[3647] | 287 | operators.Add(new BestSingleObjectiveTestFunctionSolutionAnalyzer());
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| 288 | operators.Add(new PopulationBestSingleObjectiveTestFunctionSolutionAnalyzer());
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| 289 | operators.Add(new MultiPopulationBestSingleObjectiveTestFunctionSolutionAnalyzer());
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| 290 | ParameterizeAnalyzers();
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[3303] | 291 | operators.AddRange(ApplicationManager.Manager.GetInstances<IRealVectorOperator>().Cast<IOperator>());
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[3336] | 292 | operators.Add(strategyVectorCreator);
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| 293 | operators.Add(strategyVectorCrossover);
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| 294 | operators.Add(strategyVectorManipulator);
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[3209] | 295 | UpdateMoveEvaluators();
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| 296 | ParameterizeOperators();
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[3187] | 297 | InitializeMoveGenerators();
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[3150] | 298 | }
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[3187] | 299 | private void InitializeMoveGenerators() {
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| 300 | foreach (IAdditiveRealVectorMoveOperator op in Operators.OfType<IAdditiveRealVectorMoveOperator>()) {
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[3150] | 301 | if (op is IMoveGenerator) {
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[3187] | 302 | op.AdditiveMoveParameter.ActualNameChanged += new EventHandler(MoveGenerator_AdditiveMoveParameter_ActualNameChanged);
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[3150] | 303 | }
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| 304 | }
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[3187] | 305 | }
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| 306 | private void UpdateMoveEvaluators() {
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[3303] | 307 | foreach (ISingleObjectiveTestFunctionMoveEvaluator op in Operators.OfType<ISingleObjectiveTestFunctionMoveEvaluator>().ToList())
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| 308 | operators.Remove(op);
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| 309 | foreach (ISingleObjectiveTestFunctionMoveEvaluator op in ApplicationManager.Manager.GetInstances<ISingleObjectiveTestFunctionMoveEvaluator>())
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| 310 | if (op.EvaluatorType == Evaluator.GetType()) {
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| 311 | operators.Add(op);
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[3318] | 312 | #region Synchronize evaluator specific parameters with the parameters of the corresponding move evaluators
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| 313 | if (op is ISphereMoveEvaluator) {
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| 314 | SphereEvaluator e = (Evaluator as SphereEvaluator);
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| 315 | e.AlphaParameter.ValueChanged += new EventHandler(SphereEvaluator_Parameter_ValueChanged);
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| 316 | e.CParameter.ValueChanged += new EventHandler(SphereEvaluator_Parameter_ValueChanged);
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| 317 | ISphereMoveEvaluator em = (op as ISphereMoveEvaluator);
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| 318 | em.C = e.C;
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| 319 | em.Alpha = e.Alpha;
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| 320 | } else if (op is IRastriginMoveEvaluator) {
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| 321 | RastriginEvaluator e = (Evaluator as RastriginEvaluator);
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| 322 | e.AParameter.ValueChanged += new EventHandler(RastriginEvaluator_Parameter_ValueChanged);
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| 323 | IRastriginMoveEvaluator em = (op as IRastriginMoveEvaluator);
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| 324 | em.A = e.A;
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| 325 | }
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| 326 | #endregion
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[3303] | 327 | }
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| 328 | ParameterizeOperators();
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| 329 | OnOperatorsChanged();
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[3187] | 330 | }
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[3150] | 331 | private void ParameterizeSolutionCreator() {
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| 332 | SolutionCreator.LengthParameter.Value = new IntValue(ProblemSize.Value);
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| 333 | }
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| 334 | private void ParameterizeEvaluator() {
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| 335 | Evaluator.PointParameter.ActualName = SolutionCreator.RealVectorParameter.ActualName;
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| 336 | }
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| 337 | private void ParameterizeOperators() {
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| 338 | foreach (IRealVectorCrossover op in Operators.OfType<IRealVectorCrossover>()) {
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| 339 | op.ParentsParameter.ActualName = SolutionCreator.RealVectorParameter.ActualName;
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| 340 | op.ChildParameter.ActualName = SolutionCreator.RealVectorParameter.ActualName;
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[3182] | 341 | op.BoundsParameter.ActualName = BoundsParameter.Name;
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[3150] | 342 | }
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| 343 | foreach (IRealVectorManipulator op in Operators.OfType<IRealVectorManipulator>()) {
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| 344 | op.RealVectorParameter.ActualName = SolutionCreator.RealVectorParameter.ActualName;
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[3182] | 345 | op.BoundsParameter.ActualName = BoundsParameter.Name;
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[3150] | 346 | }
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[3187] | 347 | foreach (IRealVectorMoveOperator op in Operators.OfType<IRealVectorMoveOperator>()) {
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| 348 | op.RealVectorParameter.ActualName = SolutionCreator.RealVectorParameter.ActualName;
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[3150] | 349 | }
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[3187] | 350 | foreach (IRealVectorMoveGenerator op in Operators.OfType<IRealVectorMoveGenerator>()) {
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| 351 | op.BoundsParameter.ActualName = BoundsParameter.Name;
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| 352 | }
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| 353 | foreach (ISingleObjectiveTestFunctionAdditiveMoveEvaluator op in Operators.OfType<ISingleObjectiveTestFunctionAdditiveMoveEvaluator>()) {
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| 354 | op.QualityParameter.ActualName = Evaluator.QualityParameter.ActualName;
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| 355 | op.RealVectorParameter.ActualName = SolutionCreator.RealVectorParameter.ActualName;
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| 356 | }
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[3150] | 357 | }
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| 358 | #endregion
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| 359 | }
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| 360 | }
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