source: trunk/sources/HeuristicLab.Encodings.PermutationEncoding/3.3/Crossovers/MultiPermutationCrossover.cs @ 3419

Last change on this file since 3419 was 3419, checked in by abeham, 12 years ago

added item attribute and storable attribute and renamed permutation multi crossover #976

File size: 3.1 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using HeuristicLab.Collections;
23using HeuristicLab.Core;
24using HeuristicLab.Operators;
25using HeuristicLab.Optimization;
26using HeuristicLab.Parameters;
27using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
28
29namespace HeuristicLab.Encodings.PermutationEncoding.Crossovers {
30  [Item("MultiPermutationCrossover", "Randomly selects and applies one of its crossovers every time it is called.")]
31  [StorableClass]
32  public class MultiPermutationCrossover : MultiCrossover<IPermutationCrossover>, IPermutationCrossover {
33    public override bool CanChangeName {
34      get { return false; }
35    }
36    public ILookupParameter<ItemArray<Permutation>> ParentsParameter {
37      get { return (ILookupParameter<ItemArray<Permutation>>)Parameters["Parents"]; }
38    }
39
40    public ILookupParameter<Permutation> ChildParameter {
41      get { return (ILookupParameter<Permutation>)Parameters["Child"]; }
42    }
43
44    [StorableConstructor]
45    private MultiPermutationCrossover(bool deserializing) : base(deserializing) { }
46    public MultiPermutationCrossover()
47      : base() {
48      Parameters.Add(new SubScopesLookupParameter<Permutation>("Parents", "The parent permutations which should be crossed."));
49      ParentsParameter.ActualName = "Permutation";
50      Parameters.Add(new LookupParameter<Permutation>("Child", "The child permutation resulting from the crossover."));
51      ChildParameter.ActualName = "Permutation";
52
53      Initialize();
54      ParameterizeCrossovers();
55    }
56
57    [StorableHook(HookType.AfterDeserialization)]
58    private void Initialize() {
59      Operators.ItemsAdded += new CollectionItemsChangedEventHandler<IndexedItem<IPermutationCrossover>>(Operators_ItemsAdded);
60    }
61
62    private void Operators_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<IPermutationCrossover>> e) {
63      ParameterizeCrossovers();
64    }
65
66    private void ParameterizeCrossovers() {
67      foreach (IPermutationCrossover crossover in Operators) {
68        crossover.ChildParameter.ActualName = ChildParameter.Name;
69        crossover.ParentsParameter.ActualName = ParentsParameter.Name;
70      }
71      foreach (IStochasticOperator crossover in Operators) {
72        crossover.RandomParameter.ActualName = RandomParameter.Name;
73      }
74    }
75  }
76}
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