1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using System.Linq;
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23 | using HeuristicLab.Algorithms.GeneticAlgorithm;
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24 | using HeuristicLab.Common;
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25 | using HeuristicLab.Core;
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26 | using HeuristicLab.Data;
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27 | using HeuristicLab.Operators;
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28 | using HeuristicLab.Optimization;
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29 | using HeuristicLab.Optimization.Operators;
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30 | using HeuristicLab.Parameters;
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31 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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32 |
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33 | namespace HeuristicLab.Algorithms.ALPS {
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34 |
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35 | [Item("AlpsGeneticAlgorithmMainLoop", "An ALPS genetic algorithm main loop operator.")]
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36 | [StorableClass]
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37 | public sealed class AlpsGeneticAlgorithmMainLoop : AlgorithmOperator {
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38 | #region Parameter Properties
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39 | public ValueLookupParameter<BoolValue> MaximizationParameter {
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40 | get { return (ValueLookupParameter<BoolValue>)Parameters["Maximization"]; }
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41 | }
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42 | public ScopeTreeLookupParameter<DoubleValue> QualityParameter {
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43 | get { return (ScopeTreeLookupParameter<DoubleValue>)Parameters["Quality"]; }
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44 | }
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45 | public ILookupParameter<IntValue> MaximumGenerationsParameter {
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46 | get { return (ILookupParameter<IntValue>)Parameters["MaximumGenerations"]; }
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47 | }
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48 | public ILookupParameter<IOperator> AnalyzerParameter {
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49 | get { return (ILookupParameter<IOperator>)Parameters["Analyzer"]; }
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50 | }
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51 | public ILookupParameter<IOperator> LayerAnalyzerParameter {
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52 | get { return (ILookupParameter<IOperator>)Parameters["LayerAnalyzer"]; }
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53 | }
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54 | #endregion
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55 |
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56 | public GeneticAlgorithmMainLoop MainOperator {
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57 | get { return OperatorGraph.Iterate().OfType<GeneticAlgorithmMainLoop>().First(); }
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58 | }
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59 | public EldersEmigrator EldersEmigrator {
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60 | get { return OperatorGraph.Iterate().OfType<EldersEmigrator>().First(); }
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61 | }
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62 |
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63 | [StorableConstructor]
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64 | private AlpsGeneticAlgorithmMainLoop(bool deserializing)
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65 | : base(deserializing) { }
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66 | private AlpsGeneticAlgorithmMainLoop(AlpsGeneticAlgorithmMainLoop original, Cloner cloner)
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67 | : base(original, cloner) { }
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68 | public override IDeepCloneable Clone(Cloner cloner) {
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69 | return new AlpsGeneticAlgorithmMainLoop(this, cloner);
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70 | }
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71 | public AlpsGeneticAlgorithmMainLoop()
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72 | : base() {
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73 | Parameters.Add(new ValueLookupParameter<BoolValue>("Maximization", "True if the problem is a maximization problem, otherwise false.") { Hidden = true });
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74 | Parameters.Add(new ScopeTreeLookupParameter<DoubleValue>("Quality", "The value which represents the quality of a solution."));
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75 | Parameters.Add(new LookupParameter<IntValue>("MaximumGenerations", "The maximum number of generations that the algorithm should process."));
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76 | Parameters.Add(new LookupParameter<IOperator>("Analyzer", "The operator used to the analyze all individuals."));
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77 | Parameters.Add(new LookupParameter<IOperator>("LayerAnalyzer", "The operator used to analyze each layer."));
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78 |
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79 | var variableCreator = new VariableCreator() { Name = "Initialize" };
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80 | var initLayerAnalyzerProcessor = new SubScopesProcessor();
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81 | var layerVariableCreator = new VariableCreator() { Name = "Initialize Layer" };
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82 | var initLayerAnalyzerPlaceholder = new Placeholder() { Name = "LayerAnalyzer (Placeholder)" };
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83 | var initAnalyzerPlaceholder = new Placeholder() { Name = "Analyzer (Placeholder)" };
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84 | var resultsCollector = new ResultsCollector();
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85 | var matingPoolCreator = new MatingPoolCreator() { Name = "Create Mating Pools" };
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86 | var matingPoolProcessor = new UniformSubScopesProcessor();
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87 | var initializeLayer = new Assigner() { Name = "Reset LayerEvaluatedSolutions" };
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88 | var mainOperator = AlpsGeneticAlgorithmMainOperator.Create();
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89 | var generationsIcrementor = new IntCounter() { Name = "Increment Generations" };
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90 | var evaluatedSolutionsReducer = new DataReducer() { Name = "Increment EvaluatedSolutions" };
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91 | var eldersEmigrator = new EldersEmigrator() { Name = "Emigrate Elders" };
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92 | var layerOpener = new LayerOpener() { Name = "Open new Layer" };
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93 | var layerReseeder = new LayerReseeder() { Name = "Reseed Layer Zero" };
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94 | var layerAnalyzerProcessor = new UniformSubScopesProcessor();
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95 | var layerAnalyzerPlaceholder = new Placeholder() { Name = "LayerAnalyzer (Placeholder)" };
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96 | var analyzerPlaceholder = new Placeholder() { Name = "Analyzer (Placeholder)" };
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97 | var termination = new TerminationOperator();
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98 |
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99 | OperatorGraph.InitialOperator = variableCreator;
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100 |
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101 | variableCreator.CollectedValues.Add(new ValueParameter<IntValue>("Generations", new IntValue(0)));
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102 | variableCreator.CollectedValues.Add(new ValueParameter<IntValue>("GenerationsSinceLastRefresh", new IntValue(0)));
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103 | variableCreator.CollectedValues.Add(new ValueParameter<IntValue>("OpenLayers", new IntValue(1)));
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104 | variableCreator.Successor = initLayerAnalyzerProcessor;
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105 |
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106 | initLayerAnalyzerProcessor.Operators.Add(layerVariableCreator);
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107 | initLayerAnalyzerProcessor.Successor = initAnalyzerPlaceholder;
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108 |
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109 | layerVariableCreator.CollectedValues.Add(new ValueParameter<IntValue>("LayerEvaluatedSolutions"));
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110 | layerVariableCreator.CollectedValues.Add(new ValueParameter<ResultCollection>("LayerResults"));
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111 | layerVariableCreator.Successor = initLayerAnalyzerPlaceholder;
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112 |
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113 | initLayerAnalyzerPlaceholder.OperatorParameter.ActualName = LayerAnalyzerParameter.Name;
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114 | initLayerAnalyzerPlaceholder.Successor = null;
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115 |
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116 | initAnalyzerPlaceholder.OperatorParameter.ActualName = AnalyzerParameter.Name;
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117 | initAnalyzerPlaceholder.Successor = resultsCollector;
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118 |
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119 | resultsCollector.CollectedValues.Add(new LookupParameter<IntValue>("Generations"));
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120 | resultsCollector.CollectedValues.Add(new ScopeTreeLookupParameter<ResultCollection>("LayerResults", "Result set for each layer", "LayerResults"));
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121 | resultsCollector.CollectedValues.Add(new LookupParameter<IntValue>("OpenLayers"));
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122 | resultsCollector.CopyValue = new BoolValue(false);
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123 | resultsCollector.Successor = matingPoolCreator;
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124 |
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125 | matingPoolCreator.Successor = matingPoolProcessor;
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126 |
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127 | matingPoolProcessor.Parallel.Value = true;
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128 | matingPoolProcessor.Operator = initializeLayer;
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129 | matingPoolProcessor.Successor = generationsIcrementor;
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130 |
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131 | initializeLayer.LeftSideParameter.ActualName = "LayerEvaluatedSolutions";
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132 | initializeLayer.RightSideParameter.Value = new IntValue(0);
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133 | initializeLayer.Successor = mainOperator;
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134 |
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135 | generationsIcrementor.ValueParameter.ActualName = "Generations";
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136 | generationsIcrementor.Increment = new IntValue(1);
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137 | generationsIcrementor.Successor = evaluatedSolutionsReducer;
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138 |
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139 | evaluatedSolutionsReducer.ParameterToReduce.ActualName = "LayerEvaluatedSolutions";
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140 | evaluatedSolutionsReducer.TargetParameter.ActualName = "EvaluatedSolutions";
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141 | evaluatedSolutionsReducer.ReductionOperation.Value = new ReductionOperation(ReductionOperations.Sum);
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142 | evaluatedSolutionsReducer.TargetOperation.Value = new ReductionOperation(ReductionOperations.Sum);
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143 | evaluatedSolutionsReducer.Successor = eldersEmigrator;
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144 |
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145 | eldersEmigrator.Successor = layerOpener;
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146 |
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147 | layerOpener.Successor = layerReseeder;
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148 |
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149 | layerReseeder.Successor = layerAnalyzerProcessor;
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150 |
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151 | layerAnalyzerProcessor.Operator = layerAnalyzerPlaceholder;
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152 | layerAnalyzerProcessor.Successor = analyzerPlaceholder;
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153 |
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154 | layerAnalyzerPlaceholder.OperatorParameter.ActualName = LayerAnalyzerParameter.Name;
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155 |
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156 | analyzerPlaceholder.OperatorParameter.ActualName = AnalyzerParameter.Name;
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157 | analyzerPlaceholder.Successor = termination;
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158 |
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159 | termination.ContinueBranch = matingPoolCreator;
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160 | }
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161 | }
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162 | } |
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