[3418] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[11185] | 3 | * Copyright (C) 2002-2014 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[3418] | 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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[3527] | 22 | using System;
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[3425] | 23 | using System.Linq;
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[3418] | 24 | using HeuristicLab.Collections;
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[4722] | 25 | using HeuristicLab.Common;
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[3418] | 26 | using HeuristicLab.Core;
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| 27 | using HeuristicLab.Operators;
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| 28 | using HeuristicLab.Optimization;
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| 29 | using HeuristicLab.Parameters;
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| 30 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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[3674] | 31 | using HeuristicLab.PluginInfrastructure;
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[3418] | 32 |
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[3425] | 33 | namespace HeuristicLab.Encodings.PermutationEncoding {
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[3419] | 34 | [Item("MultiPermutationCrossover", "Randomly selects and applies one of its crossovers every time it is called.")]
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| 35 | [StorableClass]
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[3593] | 36 | public class MultiPermutationCrossover : StochasticMultiBranch<IPermutationCrossover>, IPermutationCrossover, IStochasticOperator {
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[3418] | 37 | public override bool CanChangeName {
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| 38 | get { return false; }
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| 39 | }
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[3425] | 40 | protected override bool CreateChildOperation {
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| 41 | get { return true; }
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| 42 | }
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| 43 |
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[3418] | 44 | public ILookupParameter<ItemArray<Permutation>> ParentsParameter {
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| 45 | get { return (ILookupParameter<ItemArray<Permutation>>)Parameters["Parents"]; }
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| 46 | }
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| 47 |
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| 48 | public ILookupParameter<Permutation> ChildParameter {
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| 49 | get { return (ILookupParameter<Permutation>)Parameters["Child"]; }
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| 50 | }
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| 51 |
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| 52 | [StorableConstructor]
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[4722] | 53 | protected MultiPermutationCrossover(bool deserializing) : base(deserializing) { }
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| 54 | protected MultiPermutationCrossover(MultiPermutationCrossover original, Cloner cloner) : base(original, cloner) { }
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[3419] | 55 | public MultiPermutationCrossover()
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[3418] | 56 | : base() {
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[3659] | 57 | Parameters.Add(new ScopeTreeLookupParameter<Permutation>("Parents", "The parent permutations which should be crossed."));
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[3418] | 58 | ParentsParameter.ActualName = "Permutation";
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| 59 | Parameters.Add(new LookupParameter<Permutation>("Child", "The child permutation resulting from the crossover."));
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| 60 | ChildParameter.ActualName = "Permutation";
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[3674] | 61 |
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| 62 | foreach (Type type in ApplicationManager.Manager.GetTypes(typeof(IPermutationCrossover))) {
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| 63 | if (!typeof(MultiOperator<IPermutationCrossover>).IsAssignableFrom(type))
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| 64 | Operators.Add((IPermutationCrossover)Activator.CreateInstance(type), true);
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| 65 | }
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[10346] | 66 |
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| 67 | SelectedOperatorParameter.ActualName = "SelectedCrossoverOperator";
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[3418] | 68 | }
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| 69 |
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[4722] | 70 | public override IDeepCloneable Clone(Cloner cloner) {
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| 71 | return new MultiPermutationCrossover(this, cloner);
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| 72 | }
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| 73 |
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[3445] | 74 | protected override void Operators_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedItem<IPermutationCrossover>> e) {
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| 75 | base.Operators_ItemsReplaced(sender, e);
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[3425] | 76 | ParameterizeCrossovers();
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| 77 | }
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| 78 |
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[3445] | 79 | protected override void Operators_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<IPermutationCrossover>> e) {
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| 80 | base.Operators_ItemsAdded(sender, e);
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[3418] | 81 | ParameterizeCrossovers();
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| 82 | }
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| 83 |
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| 84 | private void ParameterizeCrossovers() {
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[3425] | 85 | foreach (IPermutationCrossover crossover in Operators.OfType<IPermutationCrossover>()) {
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[3418] | 86 | crossover.ChildParameter.ActualName = ChildParameter.Name;
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| 87 | crossover.ParentsParameter.ActualName = ParentsParameter.Name;
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| 88 | }
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[3425] | 89 | foreach (IStochasticOperator crossover in Operators.OfType<IStochasticOperator>()) {
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[3418] | 90 | crossover.RandomParameter.ActualName = RandomParameter.Name;
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| 91 | }
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| 92 | }
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[3527] | 93 |
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[10295] | 94 | public override IOperation InstrumentedApply() {
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[3527] | 95 | if (Operators.Count == 0) throw new InvalidOperationException(Name + ": Please add at least one permutation crossover to choose from.");
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[10295] | 96 | return base.InstrumentedApply();
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[3527] | 97 | }
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[3418] | 98 | }
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| 99 | }
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