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source: branches/ALPS/HeuristicLab.Algorithms.ALPS/3.3/MatingPoolCreator.cs @ 12040

Last change on this file since 12040 was 12040, checked in by pfleck, 9 years ago

#2269
Introduced a parameter to adjust the range of layers used for creating a mating pool.

File size: 2.6 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2015 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;
23using HeuristicLab.Common;
24using HeuristicLab.Core;
25using HeuristicLab.Data;
26using HeuristicLab.Operators;
27using HeuristicLab.Parameters;
28using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
29
30namespace HeuristicLab.Algorithms.ALPS {
31  [Item("MatingPoolCreator", "An operator which creating mating pools based on a set of sub-populations. For each sub-population, the individuals from the previous sub-population are copied into the current sub-population.")]
32  [StorableClass]
33  public sealed class MatingPoolCreator : SingleSuccessorOperator {
34
35    private ILookupParameter<IntValue> MatingPoolRangeParameter {
36      get { return (ILookupParameter<IntValue>)Parameters["MatingPoolRange"]; }
37    }
38
39    [StorableConstructor]
40    private MatingPoolCreator(bool deserializing)
41      : base(deserializing) { }
42    private MatingPoolCreator(MatingPoolCreator original, Cloner cloner)
43      : base(original, cloner) { }
44    public override IDeepCloneable Clone(Cloner cloner) {
45      return new MatingPoolCreator(this, cloner);
46    }
47    public MatingPoolCreator()
48      : base() {
49      Parameters.Add(new LookupParameter<IntValue>("MatingPoolRange"));
50    }
51
52    public override IOperation Apply() {
53      var layers = ExecutionContext.Scope.SubScopes;
54      int range = MatingPoolRangeParameter.ActualValue.Value;
55
56      for (int layer = layers.Count - 1; layer > 0; layer--) {
57        var layerScope = layers[layer];
58        for (int n = 1; (n <= range) && (layer - n >= 0); n++) {
59          var prevLayerScope = layers[layer - n];
60          foreach (var individual in prevLayerScope.SubScopes) {
61            layerScope.SubScopes.Add((IScope)individual.Clone(new Cloner()));
62          }
63        }
64      }
65
66      return base.Apply();
67    }
68  }
69}
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