1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2019 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.Linq;
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25 | using HeuristicLab.Collections;
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26 | using HeuristicLab.Common;
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27 | using HeuristicLab.Core;
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28 | using HeuristicLab.Data;
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29 | using HeuristicLab.Operators;
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30 | using HeuristicLab.Optimization;
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31 | using HeuristicLab.Parameters;
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32 | using HEAL.Attic;
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33 | using HeuristicLab.PluginInfrastructure;
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34 |
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35 | namespace HeuristicLab.Encodings.SymbolicExpressionTreeEncoding {
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36 | [Item("MultiSymbolicExpressionTreeManipulator", "Randomly selects and applies one of its manipulators every time it is called.")]
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37 | [StorableType("0A0ED8D8-69D4-4F58-A4FD-6D97F27B4009")]
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38 | public sealed class MultiSymbolicExpressionTreeManipulator : StochasticMultiBranch<ISymbolicExpressionTreeManipulator>,
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39 | ISymbolicExpressionTreeManipulator,
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40 | IStochasticOperator,
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41 | ISymbolicExpressionTreeSizeConstraintOperator {
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42 | private const string SymbolicExpressionTreeParameterName = "SymbolicExpressionTree";
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43 | private const string MaximumSymbolicExpressionTreeLengthParameterName = "MaximumSymbolicExpressionTreeLength";
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44 | private const string MaximumSymbolicExpressionTreeDepthParameterName = "MaximumSymbolicExpressionTreeDepth";
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45 |
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46 | public override bool CanChangeName {
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47 | get { return false; }
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48 | }
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49 | protected override bool CreateChildOperation {
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50 | get { return true; }
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51 | }
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52 |
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53 | #region Parameter Properties
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54 | public IValueLookupParameter<IntValue> MaximumSymbolicExpressionTreeLengthParameter {
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55 | get { return (IValueLookupParameter<IntValue>)Parameters[MaximumSymbolicExpressionTreeLengthParameterName]; }
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56 | }
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57 | public IValueLookupParameter<IntValue> MaximumSymbolicExpressionTreeDepthParameter {
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58 | get { return (IValueLookupParameter<IntValue>)Parameters[MaximumSymbolicExpressionTreeDepthParameterName]; }
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59 | }
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60 | public ILookupParameter<ISymbolicExpressionTree> SymbolicExpressionTreeParameter {
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61 | get { return (ILookupParameter<ISymbolicExpressionTree>)Parameters[SymbolicExpressionTreeParameterName]; }
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62 | }
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63 | #endregion
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64 |
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65 | [StorableConstructor]
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66 | private MultiSymbolicExpressionTreeManipulator(StorableConstructorFlag _) : base(_) { }
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67 | private MultiSymbolicExpressionTreeManipulator(MultiSymbolicExpressionTreeManipulator original, Cloner cloner) : base(original, cloner) { }
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68 | public MultiSymbolicExpressionTreeManipulator()
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69 | : base() {
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70 | Parameters.Add(new LookupParameter<ISymbolicExpressionTree>(SymbolicExpressionTreeParameterName, "The symbolic expression tree on which the operator should be applied."));
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71 | Parameters.Add(new ValueLookupParameter<IntValue>(MaximumSymbolicExpressionTreeLengthParameterName, "The maximal length (number of nodes) of the symbolic expression tree."));
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72 | Parameters.Add(new ValueLookupParameter<IntValue>(MaximumSymbolicExpressionTreeDepthParameterName, "The maximal depth of the symbolic expression tree (a tree with one node has depth = 0)."));
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73 |
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74 | List<ISymbolicExpressionTreeManipulator> list = new List<ISymbolicExpressionTreeManipulator>();
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75 | foreach (Type type in ApplicationManager.Manager.GetTypes(typeof(ISymbolicExpressionTreeManipulator))) {
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76 | if (this.GetType().Assembly != type.Assembly) continue;
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77 | if (typeof(IMultiOperator<ISymbolicExpressionTreeManipulator>).IsAssignableFrom(type)) continue;
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78 | if (typeof(ISymbolicExpressionTreeArchitectureAlteringOperator).IsAssignableFrom(type)) continue;
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79 | list.Add((ISymbolicExpressionTreeManipulator)Activator.CreateInstance(type));
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80 | }
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81 | CheckedItemList<ISymbolicExpressionTreeManipulator> checkedItemList = new CheckedItemList<ISymbolicExpressionTreeManipulator>();
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82 | checkedItemList.AddRange(list.OrderBy(op => op.Name));
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83 | Operators = checkedItemList.AsReadOnly();
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84 | Operators_ItemsAdded(this, new CollectionItemsChangedEventArgs<IndexedItem<ISymbolicExpressionTreeManipulator>>(Operators.CheckedItems));
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85 |
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86 | SelectedOperatorParameter.ActualName = "SelectedManipulationOperator";
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87 | }
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88 |
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89 | public override IDeepCloneable Clone(Cloner cloner) {
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90 | return new MultiSymbolicExpressionTreeManipulator(this, cloner);
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91 | }
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92 |
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93 | protected override void Operators_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedItem<ISymbolicExpressionTreeManipulator>> e) {
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94 | base.Operators_ItemsReplaced(sender, e);
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95 | ParameterizeManipulators();
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96 | }
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97 |
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98 | protected override void Operators_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<ISymbolicExpressionTreeManipulator>> e) {
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99 | base.Operators_ItemsAdded(sender, e);
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100 | ParameterizeManipulators();
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101 | }
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102 |
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103 | private void ParameterizeManipulators() {
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104 | foreach (IStochasticOperator manipulator in Operators.OfType<IStochasticOperator>()) {
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105 | manipulator.RandomParameter.ActualName = RandomParameter.Name;
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106 | }
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107 | foreach (ISymbolicExpressionTreeManipulator manipulator in Operators.OfType<ISymbolicExpressionTreeManipulator>()) {
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108 | manipulator.SymbolicExpressionTreeParameter.ActualName = SymbolicExpressionTreeParameter.Name;
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109 | }
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110 | foreach (ISymbolicExpressionTreeSizeConstraintOperator manipulator in Operators.OfType<ISymbolicExpressionTreeSizeConstraintOperator>()) {
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111 | manipulator.MaximumSymbolicExpressionTreeDepthParameter.ActualName = MaximumSymbolicExpressionTreeDepthParameter.Name;
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112 | manipulator.MaximumSymbolicExpressionTreeLengthParameter.ActualName = MaximumSymbolicExpressionTreeLengthParameter.Name;
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113 | }
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114 | }
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115 | }
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116 | }
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