source: trunk/sources/HeuristicLab.Encodings.RealVectorEncoding/3.3/Crossovers/MultiRealVectorCrossover.cs @ 3425

Last change on this file since 3425 was 3425, checked in by abeham, 12 years ago

Changed MultiCrossover to StochasticMultiOperator
Derived StochasticMultiBranch from StochasticMultiOperator
Derived encoding specific mutation/crossover operators from StochasticMultiOperator
#976

File size: 4.0 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 System.Linq;
23using HeuristicLab.Collections;
24using HeuristicLab.Core;
25using HeuristicLab.Data;
26using HeuristicLab.Operators;
27using HeuristicLab.Optimization;
28using HeuristicLab.Parameters;
29using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
30
31namespace HeuristicLab.Encodings.RealVectorEncoding {
32  [Item("MultiRealVectorCrossover", "Randomly selects and applies one of its crossovers every time it is called.")]
33  [StorableClass]
34  public class MultiRealVectorCrossover : StochasticMultiOperator<IRealVectorCrossover>, IRealVectorCrossover {
35    public override bool CanChangeName {
36      get { return false; }
37    }
38    protected override bool CreateChildOperation {
39      get { return true; }
40    }
41    public override bool AutomaticTypeDiscovery {
42      get { return true; }
43    }
44
45    public ILookupParameter<ItemArray<RealVector>> ParentsParameter {
46      get { return (ILookupParameter<ItemArray<RealVector>>)Parameters["Parents"]; }
47    }
48    public ILookupParameter<RealVector> ChildParameter {
49      get { return (ILookupParameter<RealVector>)Parameters["Child"]; }
50    }
51    public IValueLookupParameter<DoubleMatrix> BoundsParameter {
52      get { return (IValueLookupParameter<DoubleMatrix>)Parameters["Bounds"]; }
53    }
54
55    [StorableConstructor]
56    private MultiRealVectorCrossover(bool deserializing) : base(deserializing) { }
57    public MultiRealVectorCrossover()
58      : base() {
59      Parameters.Add(new SubScopesLookupParameter<RealVector>("Parents", "The parent real vector which should be crossed."));
60      ParentsParameter.ActualName = "RealVector";
61      Parameters.Add(new LookupParameter<RealVector>("Child", "The child real vector resulting from the crossover."));
62      ChildParameter.ActualName = "RealVector";
63      Parameters.Add(new ValueLookupParameter<DoubleMatrix>("Bounds", "The lower and upper bounds for each dimension of the vector."));
64
65      Initialize();
66      ParameterizeCrossovers();
67    }
68
69    [StorableHook(HookType.AfterDeserialization)]
70    private void Initialize() {
71      Operators.ItemsAdded += new CollectionItemsChangedEventHandler<IndexedItem<IRealVectorCrossover>>(Operators_ItemsAdded);
72      Operators.ItemsReplaced += new CollectionItemsChangedEventHandler<IndexedItem<IRealVectorCrossover>>(Operators_ItemsReplaced);
73    }
74
75    private void Operators_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedItem<IRealVectorCrossover>> e) {
76      ParameterizeCrossovers();
77    }
78
79    private void Operators_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<IRealVectorCrossover>> e) {
80      ParameterizeCrossovers();
81    }
82
83    private void ParameterizeCrossovers() {
84      foreach (IRealVectorCrossover crossover in Operators.OfType<IRealVectorCrossover>()) {
85        crossover.ChildParameter.ActualName = ChildParameter.Name;
86        crossover.ParentsParameter.ActualName = ParentsParameter.Name;
87        crossover.BoundsParameter.ActualName = BoundsParameter.Name;
88      }
89      foreach (IStochasticOperator crossover in Operators.OfType<IStochasticOperator>()) {
90        crossover.RandomParameter.ActualName = RandomParameter.Name;
91      }
92    }
93  }
94}
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