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source: branches/HeuristicLab.EvolutionTracking/HeuristicLab.EvolutionTracking/3.4/Operators/BeforeManipulatorOperator.cs @ 11288

Last change on this file since 11288 was 11288, checked in by bburlacu, 10 years ago

#1772: Fix calculation of successful offspring ratios in the GenealogyAnalyzer. Simplify cloning in the BeforeManipulatorOperator.

File size: 2.6 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2014 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.Common;
24using HeuristicLab.Core;
25using HeuristicLab.Parameters;
26using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
27
28namespace HeuristicLab.EvolutionTracking {
29  [StorableClass]
30  [Item("AfterCrossoverOperator", "Performs an action after the crossover operator is applied.")]
31  public class BeforeManipulatorOperator<T> : EvolutionTrackingOperator<T>, IManipulatorOperator<T> where T : class,IItem {
32    private const string ChildParameterName = "Child";
33
34    public ILookupParameter<T> ChildParameter {
35      get { return (ILookupParameter<T>)Parameters[ChildParameterName]; }
36    }
37
38    protected BeforeManipulatorOperator(BeforeManipulatorOperator<T> original, Cloner cloner)
39      : base(original, cloner) {
40    }
41
42    public override IDeepCloneable Clone(Cloner cloner) {
43      return new BeforeManipulatorOperator<T>(this, cloner);
44    }
45
46    [StorableConstructor]
47    protected BeforeManipulatorOperator(bool deserializing) : base(deserializing) { }
48
49    public BeforeManipulatorOperator() {
50      Parameters.Add(new LookupParameter<T>(ChildParameterName));
51    }
52
53    public override IOperation Apply() {
54      // since mutation always takes place after crossover, the vertex for the current child is already in the tree
55      var v = (IGenealogyGraphNode<T>)GenealogyGraph.GetByContent(ChildParameter.ActualValue);
56      var c = (IGenealogyGraphNode<T>)v.Clone();
57      c.Rank = v.Rank - 0.5;
58      GenealogyGraph.AddVertex(c);
59
60      var arcs = v.InArcs.ToList();
61      foreach (var arc in arcs) {
62        var p = arc.Source;
63        GenealogyGraph.RemoveArc(arc);
64        GenealogyGraph.AddArc(new GenealogyGraphArc(p, c));
65      }
66
67      GenealogyGraph.AddArc(c, v);
68
69      return base.Apply();
70    }
71  }
72}
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