[5577] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[7290] | 3 | * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[5577] | 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.Drawing;
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[5618] | 24 | using System.Linq;
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[5577] | 25 | using HeuristicLab.Common;
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| 26 | using HeuristicLab.Common.Resources;
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| 27 | using HeuristicLab.Core;
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| 28 | using HeuristicLab.Data;
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[5618] | 29 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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[5577] | 30 | using HeuristicLab.Optimization;
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| 31 | using HeuristicLab.Parameters;
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| 32 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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[5618] | 33 | using HeuristicLab.PluginInfrastructure;
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[5577] | 34 |
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| 35 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic {
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| 36 | [StorableClass]
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[5883] | 37 | public abstract class SymbolicDataAnalysisProblem<T, U, V> : HeuristicOptimizationProblem<U, V>, IDataAnalysisProblem<T>, ISymbolicDataAnalysisProblem, IStorableContent
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[7085] | 38 | where T : class, IDataAnalysisProblemData
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[5580] | 39 | where U : class, ISymbolicDataAnalysisEvaluator<T>
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| 40 | where V : class, ISymbolicDataAnalysisSolutionCreator {
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[5770] | 41 |
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[5577] | 42 | #region parameter names & descriptions
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| 43 | private const string ProblemDataParameterName = "ProblemData";
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| 44 | private const string SymbolicExpressionTreeGrammarParameterName = "SymbolicExpressionTreeGrammar";
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| 45 | private const string SymbolicExpressionTreeInterpreterParameterName = "SymbolicExpressionTreeInterpreter";
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| 46 | private const string MaximumSymbolicExpressionTreeDepthParameterName = "MaximumSymbolicExpressionTreeDepth";
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| 47 | private const string MaximumSymbolicExpressionTreeLengthParameterName = "MaximumSymbolicExpressionTreeLength";
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| 48 | private const string MaximumFunctionDefinitionsParameterName = "MaximumFunctionDefinitions";
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| 49 | private const string MaximumFunctionArgumentsParameterName = "MaximumFunctionArguments";
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[5759] | 50 | private const string RelativeNumberOfEvaluatedSamplesParameterName = "RelativeNumberOfEvaluatedSamples";
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[5733] | 51 | private const string FitnessCalculationPartitionParameterName = "FitnessCalculationPartition";
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[5775] | 52 | private const string ValidationPartitionParameterName = "ValidationPartition";
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[5577] | 53 |
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| 54 | private const string ProblemDataParameterDescription = "";
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| 55 | private const string SymbolicExpressionTreeGrammarParameterDescription = "The grammar that should be used for symbolic expression tree.";
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| 56 | private const string SymoblicExpressionTreeInterpreterParameterDescription = "The interpreter that should be used to evaluate the symbolic expression tree.";
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| 57 | private const string MaximumSymbolicExpressionTreeDepthParameterDescription = "Maximal depth of the symbolic expression. The minimum depth needed for the algorithm is 3 because two levels are reserved for the ProgramRoot and the Start symbol.";
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| 58 | private const string MaximumSymbolicExpressionTreeLengthParameterDescription = "Maximal length of the symbolic expression.";
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| 59 | private const string MaximumFunctionDefinitionsParameterDescription = "Maximal number of automatically defined functions";
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| 60 | private const string MaximumFunctionArgumentsParameterDescription = "Maximal number of arguments of automatically defined functions.";
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[5759] | 61 | private const string RelativeNumberOfEvaluatedSamplesParameterDescription = "The relative number of samples of the dataset partition, which should be randomly chosen for evaluation.";
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| 62 | private const string FitnessCalculationPartitionParameterDescription = "The partition of the problem data training partition, that should be used to calculate the fitness of an individual.";
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[5857] | 63 | private const string ValidationPartitionParameterDescription = "The partition of the problem data training partition, that should be used to select the best model from (optional).";
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[5577] | 64 | #endregion
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| 65 |
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| 66 | #region parameter properties
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| 67 | IParameter IDataAnalysisProblem.ProblemDataParameter {
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| 68 | get { return ProblemDataParameter; }
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| 69 | }
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| 70 | public IValueParameter<T> ProblemDataParameter {
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| 71 | get { return (IValueParameter<T>)Parameters[ProblemDataParameterName]; }
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| 72 | }
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| 73 | public IValueParameter<ISymbolicDataAnalysisGrammar> SymbolicExpressionTreeGrammarParameter {
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| 74 | get { return (IValueParameter<ISymbolicDataAnalysisGrammar>)Parameters[SymbolicExpressionTreeGrammarParameterName]; }
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| 75 | }
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[5624] | 76 | public IValueParameter<ISymbolicDataAnalysisExpressionTreeInterpreter> SymbolicExpressionTreeInterpreterParameter {
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| 77 | get { return (IValueParameter<ISymbolicDataAnalysisExpressionTreeInterpreter>)Parameters[SymbolicExpressionTreeInterpreterParameterName]; }
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[5577] | 78 | }
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[5618] | 79 | public IFixedValueParameter<IntValue> MaximumSymbolicExpressionTreeDepthParameter {
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| 80 | get { return (IFixedValueParameter<IntValue>)Parameters[MaximumSymbolicExpressionTreeDepthParameterName]; }
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[5577] | 81 | }
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[5618] | 82 | public IFixedValueParameter<IntValue> MaximumSymbolicExpressionTreeLengthParameter {
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| 83 | get { return (IFixedValueParameter<IntValue>)Parameters[MaximumSymbolicExpressionTreeLengthParameterName]; }
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[5577] | 84 | }
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[5618] | 85 | public IFixedValueParameter<IntValue> MaximumFunctionDefinitionsParameter {
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| 86 | get { return (IFixedValueParameter<IntValue>)Parameters[MaximumFunctionDefinitionsParameterName]; }
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[5577] | 87 | }
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[5618] | 88 | public IFixedValueParameter<IntValue> MaximumFunctionArgumentsParameter {
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| 89 | get { return (IFixedValueParameter<IntValue>)Parameters[MaximumFunctionArgumentsParameterName]; }
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[5577] | 90 | }
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[5759] | 91 | public IFixedValueParameter<PercentValue> RelativeNumberOfEvaluatedSamplesParameter {
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| 92 | get { return (IFixedValueParameter<PercentValue>)Parameters[RelativeNumberOfEvaluatedSamplesParameterName]; }
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| 93 | }
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| 94 | public IFixedValueParameter<IntRange> FitnessCalculationPartitionParameter {
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| 95 | get { return (IFixedValueParameter<IntRange>)Parameters[FitnessCalculationPartitionParameterName]; }
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| 96 | }
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[5883] | 97 | public IFixedValueParameter<IntRange> ValidationPartitionParameter {
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[5775] | 98 | get { return (IFixedValueParameter<IntRange>)Parameters[ValidationPartitionParameterName]; }
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[5759] | 99 | }
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[5577] | 100 | #endregion
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| 101 |
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| 102 | #region properties
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| 103 | public string Filename { get; set; }
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[7255] | 104 | public static new Image StaticItemImage { get { return VSImageLibrary.Type; } }
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[5577] | 105 |
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| 106 | IDataAnalysisProblemData IDataAnalysisProblem.ProblemData {
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| 107 | get { return ProblemData; }
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[7025] | 108 | set { ProblemData = (T)value; }
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[5577] | 109 | }
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| 110 | public T ProblemData {
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| 111 | get { return ProblemDataParameter.Value; }
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[5618] | 112 | set { ProblemDataParameter.Value = value; }
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[5577] | 113 | }
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| 114 |
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| 115 | public ISymbolicDataAnalysisGrammar SymbolicExpressionTreeGrammar {
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| 116 | get { return SymbolicExpressionTreeGrammarParameter.Value; }
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[5618] | 117 | set { SymbolicExpressionTreeGrammarParameter.Value = value; }
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[5577] | 118 | }
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[5624] | 119 | public ISymbolicDataAnalysisExpressionTreeInterpreter SymbolicExpressionTreeInterpreter {
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[5577] | 120 | get { return SymbolicExpressionTreeInterpreterParameter.Value; }
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[5618] | 121 | set { SymbolicExpressionTreeInterpreterParameter.Value = value; }
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[5577] | 122 | }
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| 123 |
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| 124 | public IntValue MaximumSymbolicExpressionTreeDepth {
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| 125 | get { return MaximumSymbolicExpressionTreeDepthParameter.Value; }
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| 126 | }
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| 127 | public IntValue MaximumSymbolicExpressionTreeLength {
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| 128 | get { return MaximumSymbolicExpressionTreeLengthParameter.Value; }
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| 129 | }
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| 130 | public IntValue MaximumFunctionDefinitions {
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| 131 | get { return MaximumFunctionDefinitionsParameter.Value; }
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| 132 | }
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| 133 | public IntValue MaximumFunctionArguments {
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[5618] | 134 | get { return MaximumFunctionArgumentsParameter.Value; }
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[5577] | 135 | }
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[5759] | 136 | public PercentValue RelativeNumberOfEvaluatedSamples {
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| 137 | get { return RelativeNumberOfEvaluatedSamplesParameter.Value; }
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| 138 | }
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| 139 |
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| 140 | public IntRange FitnessCalculationPartition {
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| 141 | get { return FitnessCalculationPartitionParameter.Value; }
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| 142 | }
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[5775] | 143 | public IntRange ValidationPartition {
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[5883] | 144 | get { return ValidationPartitionParameter.Value; }
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[5759] | 145 | }
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[5577] | 146 | #endregion
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| 147 |
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| 148 | [StorableConstructor]
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| 149 | protected SymbolicDataAnalysisProblem(bool deserializing) : base(deserializing) { }
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[5618] | 150 | [StorableHook(HookType.AfterDeserialization)]
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| 151 | private void AfterDeserialization() {
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| 152 | RegisterEventHandlers();
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| 153 | }
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| 154 | protected SymbolicDataAnalysisProblem(SymbolicDataAnalysisProblem<T, U, V> original, Cloner cloner)
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| 155 | : base(original, cloner) {
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| 156 | RegisterEventHandlers();
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| 157 | }
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[5577] | 158 |
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[5618] | 159 | protected SymbolicDataAnalysisProblem(T problemData, U evaluator, V solutionCreator)
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| 160 | : base(evaluator, solutionCreator) {
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| 161 | Parameters.Add(new ValueParameter<T>(ProblemDataParameterName, ProblemDataParameterDescription, problemData));
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[5577] | 162 | Parameters.Add(new ValueParameter<ISymbolicDataAnalysisGrammar>(SymbolicExpressionTreeGrammarParameterName, SymbolicExpressionTreeGrammarParameterDescription));
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[5624] | 163 | Parameters.Add(new ValueParameter<ISymbolicDataAnalysisExpressionTreeInterpreter>(SymbolicExpressionTreeInterpreterParameterName, SymoblicExpressionTreeInterpreterParameterDescription));
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[5847] | 164 | Parameters.Add(new FixedValueParameter<IntValue>(MaximumSymbolicExpressionTreeDepthParameterName, MaximumSymbolicExpressionTreeDepthParameterDescription));
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| 165 | Parameters.Add(new FixedValueParameter<IntValue>(MaximumSymbolicExpressionTreeLengthParameterName, MaximumSymbolicExpressionTreeLengthParameterDescription));
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| 166 | Parameters.Add(new FixedValueParameter<IntValue>(MaximumFunctionDefinitionsParameterName, MaximumFunctionDefinitionsParameterDescription));
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| 167 | Parameters.Add(new FixedValueParameter<IntValue>(MaximumFunctionArgumentsParameterName, MaximumFunctionArgumentsParameterDescription));
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| 168 | Parameters.Add(new FixedValueParameter<IntRange>(FitnessCalculationPartitionParameterName, FitnessCalculationPartitionParameterDescription));
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| 169 | Parameters.Add(new FixedValueParameter<IntRange>(ValidationPartitionParameterName, ValidationPartitionParameterDescription));
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[5759] | 170 | Parameters.Add(new FixedValueParameter<PercentValue>(RelativeNumberOfEvaluatedSamplesParameterName, RelativeNumberOfEvaluatedSamplesParameterDescription, new PercentValue(1)));
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[5618] | 171 |
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[5854] | 172 | SymbolicExpressionTreeInterpreterParameter.Hidden = true;
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| 173 | MaximumFunctionArgumentsParameter.Hidden = true;
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| 174 | MaximumFunctionDefinitionsParameter.Hidden = true;
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| 175 |
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[5618] | 176 | SymbolicExpressionTreeGrammar = new TypeCoherentExpressionGrammar();
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| 177 | SymbolicExpressionTreeInterpreter = new SymbolicDataAnalysisExpressionTreeInterpreter();
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| 178 |
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[5770] | 179 | FitnessCalculationPartition.Start = ProblemData.TrainingPartition.Start;
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| 180 | FitnessCalculationPartition.End = ProblemData.TrainingPartition.End;
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| 181 |
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[5722] | 182 | InitializeOperators();
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| 183 |
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[5618] | 184 | UpdateGrammar();
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| 185 | RegisterEventHandlers();
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[5577] | 186 | }
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| 187 |
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[5685] | 188 | protected virtual void UpdateGrammar() {
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[5726] | 189 | SymbolicExpressionTreeGrammar.MaximumFunctionArguments = MaximumFunctionArguments.Value;
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| 190 | SymbolicExpressionTreeGrammar.MaximumFunctionDefinitions = MaximumFunctionDefinitions.Value;
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[5685] | 191 | foreach (var varSymbol in SymbolicExpressionTreeGrammar.Symbols.OfType<HeuristicLab.Problems.DataAnalysis.Symbolic.Variable>()) {
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[6803] | 192 | if (!varSymbol.Fixed) varSymbol.VariableNames = ProblemData.AllowedInputVariables;
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[5685] | 193 | }
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| 194 | foreach (var varSymbol in SymbolicExpressionTreeGrammar.Symbols.OfType<HeuristicLab.Problems.DataAnalysis.Symbolic.VariableCondition>()) {
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[6803] | 195 | if (!varSymbol.Fixed) varSymbol.VariableNames = ProblemData.AllowedInputVariables;
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[5685] | 196 | }
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| 197 | }
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| 198 |
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[5618] | 199 | private void InitializeOperators() {
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| 200 | Operators.AddRange(ApplicationManager.Manager.GetInstances<ISymbolicExpressionTreeOperator>());
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| 201 | Operators.Add(new SymbolicExpressionSymbolFrequencyAnalyzer());
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[5685] | 202 | Operators.Add(new SymbolicDataAnalysisVariableFrequencyAnalyzer());
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[5618] | 203 | Operators.Add(new MinAverageMaxSymbolicExpressionTreeLengthAnalyzer());
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[7085] | 204 | Operators.Add(new SymbolicExpressionTreeLengthAnalyzer());
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[5618] | 205 | ParameterizeOperators();
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| 206 | }
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| 207 |
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[5685] | 208 | #region events
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[5618] | 209 | private void RegisterEventHandlers() {
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| 210 | ProblemDataParameter.ValueChanged += new EventHandler(ProblemDataParameter_ValueChanged);
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| 211 | ProblemDataParameter.Value.Changed += (object sender, EventArgs e) => OnProblemDataChanged();
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| 212 |
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[5841] | 213 | SymbolicExpressionTreeGrammarParameter.ValueChanged += new EventHandler(SymbolicExpressionTreeGrammarParameter_ValueChanged);
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| 214 |
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[5618] | 215 | MaximumFunctionArguments.ValueChanged += new EventHandler(ArchitectureParameterValue_ValueChanged);
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| 216 | MaximumFunctionDefinitions.ValueChanged += new EventHandler(ArchitectureParameterValue_ValueChanged);
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| 217 | MaximumSymbolicExpressionTreeDepth.ValueChanged += new EventHandler(MaximumSymbolicExpressionTreeDepth_ValueChanged);
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| 218 | }
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| 219 |
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[5685] | 220 | private void ProblemDataParameter_ValueChanged(object sender, EventArgs e) {
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[5887] | 221 | ValidationPartition.Start = 0;
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| 222 | ValidationPartition.End = 0;
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[5685] | 223 | ProblemDataParameter.Value.Changed += (object s, EventArgs args) => OnProblemDataChanged();
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| 224 | OnProblemDataChanged();
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| 225 | }
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| 226 |
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[5841] | 227 | private void SymbolicExpressionTreeGrammarParameter_ValueChanged(object sender, EventArgs e) {
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| 228 | UpdateGrammar();
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| 229 | }
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| 230 |
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[5618] | 231 | private void ArchitectureParameterValue_ValueChanged(object sender, EventArgs e) {
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| 232 | UpdateGrammar();
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| 233 | }
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| 234 |
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| 235 | private void MaximumSymbolicExpressionTreeDepth_ValueChanged(object sender, EventArgs e) {
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| 236 | if (MaximumSymbolicExpressionTreeDepth != null && MaximumSymbolicExpressionTreeDepth.Value < 3)
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| 237 | MaximumSymbolicExpressionTreeDepth.Value = 3;
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| 238 | }
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| 239 |
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| 240 | protected override void OnSolutionCreatorChanged() {
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| 241 | base.OnSolutionCreatorChanged();
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| 242 | SolutionCreator.SymbolicExpressionTreeParameter.ActualNameChanged += new EventHandler(SolutionCreator_SymbolicExpressionTreeParameter_ActualNameChanged);
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| 243 | ParameterizeOperators();
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| 244 | }
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[5685] | 245 |
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[5618] | 246 | private void SolutionCreator_SymbolicExpressionTreeParameter_ActualNameChanged(object sender, EventArgs e) {
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| 247 | ParameterizeOperators();
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| 248 | }
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| 249 |
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| 250 | protected override void OnEvaluatorChanged() {
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| 251 | base.OnEvaluatorChanged();
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[5685] | 252 | ParameterizeOperators();
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[5618] | 253 | }
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| 254 |
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[5577] | 255 | public event EventHandler ProblemDataChanged;
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| 256 | protected virtual void OnProblemDataChanged() {
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[5770] | 257 | FitnessCalculationPartition.Start = ProblemData.TrainingPartition.Start;
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| 258 | FitnessCalculationPartition.End = ProblemData.TrainingPartition.End;
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| 259 |
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[5618] | 260 | UpdateGrammar();
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[5685] | 261 | ParameterizeOperators();
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| 262 |
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[5577] | 263 | var handler = ProblemDataChanged;
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| 264 | if (handler != null) handler(this, EventArgs.Empty);
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[5618] | 265 |
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| 266 | OnReset();
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[5577] | 267 | }
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[5685] | 268 | #endregion
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[5618] | 269 |
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[5685] | 270 | protected virtual void ParameterizeOperators() {
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[5618] | 271 | var operators = Parameters.OfType<IValueParameter>().Select(p => p.Value).OfType<IOperator>().Union(Operators);
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| 272 |
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| 273 | foreach (var op in operators.OfType<ISymbolicExpressionTreeGrammarBasedOperator>()) {
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[5685] | 274 | op.SymbolicExpressionTreeGrammarParameter.ActualName = SymbolicExpressionTreeGrammarParameterName;
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[5618] | 275 | }
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| 276 | foreach (var op in operators.OfType<ISymbolicExpressionTreeSizeConstraintOperator>()) {
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[5685] | 277 | op.MaximumSymbolicExpressionTreeDepthParameter.ActualName = MaximumSymbolicExpressionTreeDepthParameterName;
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| 278 | op.MaximumSymbolicExpressionTreeLengthParameter.ActualName = MaximumSymbolicExpressionTreeLengthParameterName;
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[5618] | 279 | }
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| 280 | foreach (var op in operators.OfType<ISymbolicExpressionTreeArchitectureAlteringOperator>()) {
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[5685] | 281 | op.MaximumFunctionArgumentsParameter.ActualName = MaximumFunctionArgumentsParameterName;
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| 282 | op.MaximumFunctionDefinitionsParameter.ActualName = MaximumFunctionDefinitionsParameterName;
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[5618] | 283 | }
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| 284 | foreach (var op in operators.OfType<ISymbolicDataAnalysisEvaluator<T>>()) {
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[5685] | 285 | op.ProblemDataParameter.ActualName = ProblemDataParameterName;
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[5618] | 286 | op.SymbolicExpressionTreeParameter.ActualName = SolutionCreator.SymbolicExpressionTreeParameter.ActualName;
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[5759] | 287 | op.EvaluationPartitionParameter.ActualName = FitnessCalculationPartitionParameter.Name;
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| 288 | op.RelativeNumberOfEvaluatedSamplesParameter.ActualName = RelativeNumberOfEvaluatedSamplesParameter.Name;
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[5618] | 289 | }
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| 290 | foreach (var op in operators.OfType<ISymbolicExpressionTreeCrossover>()) {
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| 291 | op.ParentsParameter.ActualName = SolutionCreator.SymbolicExpressionTreeParameter.ActualName;
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| 292 | op.ChildParameter.ActualName = SolutionCreator.SymbolicExpressionTreeParameter.ActualName;
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| 293 | }
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| 294 | foreach (var op in operators.OfType<ISymbolicExpressionTreeManipulator>()) {
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| 295 | op.SymbolicExpressionTreeParameter.ActualName = SolutionCreator.SymbolicExpressionTreeParameter.ActualName;
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| 296 | }
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| 297 | foreach (var op in operators.OfType<ISymbolicExpressionTreeAnalyzer>()) {
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| 298 | op.SymbolicExpressionTreeParameter.ActualName = SolutionCreator.SymbolicExpressionTreeParameter.ActualName;
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| 299 | }
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[6135] | 300 | foreach (var op in operators.OfType<ISymbolicDataAnalysisAnalyzer>()) {
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| 301 | op.SymbolicExpressionTreeParameter.ActualName = SolutionCreator.SymbolicExpressionTreeParameter.ActualName;
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| 302 | }
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[5759] | 303 | foreach (var op in operators.OfType<ISymbolicDataAnalysisValidationAnalyzer<U, T>>()) {
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| 304 | op.RelativeNumberOfEvaluatedSamplesParameter.ActualName = RelativeNumberOfEvaluatedSamplesParameter.Name;
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[5883] | 305 | op.ValidationPartitionParameter.ActualName = ValidationPartitionParameter.Name;
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[5759] | 306 | }
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[5685] | 307 | foreach (var op in operators.OfType<ISymbolicDataAnalysisInterpreterOperator>()) {
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| 308 | op.SymbolicDataAnalysisTreeInterpreterParameter.ActualName = SymbolicExpressionTreeInterpreterParameterName;
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| 309 | }
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[5618] | 310 | }
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[5623] | 311 |
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| 312 | public abstract void ImportProblemDataFromFile(string fileName);
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[5577] | 313 | }
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| 314 | }
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