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source: branches/ALPS/HeuristicLab.Algorithms.ALPS.SteadyState/3.3/SteadyStateMatingPoolCreator.cs @ 12220

Last change on this file since 12220 was 12220, checked in by pfleck, 8 years ago

#2350

  • Implemented elitism by sorting the layer and restricting the random target index.
  • Renamed Layers in LayersScope.
File size: 4.4 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.Linq;
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.SteadyState {
31  [Item("SteadyStateMatingPoolCreator", "")]
32  [StorableClass]
33  public class SteadyStateMatingPoolCreator : SingleSuccessorOperator {
34    private ILookupParameter<IScope> WorkingScopeParameter {
35      get { return (ILookupParameter<IScope>)Parameters["WorkingScope"]; }
36    }
37    private ILookupParameter<IScope> LayersScopeParameter {
38      get { return (ILookupParameter<IScope>)Parameters["LayersScope"]; }
39    }
40    private ILookupParameter<IntValue> LayerParameter {
41      get { return (ILookupParameter<IntValue>)Parameters["Layer"]; }
42    }
43    private ILookupParameter<IntArray> AgeLimitsParameter {
44      get { return (ILookupParameter<IntArray>)Parameters["AgeLimits"]; }
45    }
46    private ILookupParameter<IntValue> NumberOfLayersParameter {
47      get { return (ILookupParameter<IntValue>)Parameters["NumberOfLayers"]; }
48    }
49    private ILookupParameter<IntValue> EvaluatedSolutionsParameter {
50      get { return (ILookupParameter<IntValue>)Parameters["EvaluatedSolutions"]; }
51    }
52    private ILookupParameter<IntValue> PopulationSizeParameter {
53      get { return (ILookupParameter<IntValue>)Parameters["PopulationSize"]; }
54    }
55
56    [StorableConstructor]
57    private SteadyStateMatingPoolCreator(bool deserializing)
58      : base(deserializing) { }
59    private SteadyStateMatingPoolCreator(SteadyStateMatingPoolCreator original, Cloner cloner)
60      : base(original, cloner) { }
61    public override IDeepCloneable Clone(Cloner cloner) {
62      return new SteadyStateMatingPoolCreator(this, cloner);
63    }
64    public SteadyStateMatingPoolCreator()
65      : base() {
66      Parameters.Add(new LookupParameter<IScope>("WorkingScope"));
67      Parameters.Add(new LookupParameter<IScope>("LayersScope"));
68      Parameters.Add(new LookupParameter<IntValue>("Layer"));
69      Parameters.Add(new LookupParameter<IntArray>("AgeLimits"));
70      Parameters.Add(new LookupParameter<IntValue>("NumberOfLayers"));
71      Parameters.Add(new LookupParameter<IntValue>("EvaluatedSolutions"));
72      Parameters.Add(new LookupParameter<IntValue>("PopulationSize"));
73
74    }
75
76    public override IOperation Apply() {
77      int layerNumber = LayerParameter.ActualValue.Value;
78      var workingScope = WorkingScopeParameter.ActualValue;
79      var layers = LayersScopeParameter.ActualValue;
80      var ageLimits = AgeLimitsParameter.ActualValue;
81      int numberOfLayers = NumberOfLayersParameter.ActualValue.Value;
82      int evaluations = EvaluatedSolutionsParameter.ActualValue.Value;
83      int popSize = PopulationSizeParameter.ActualValue.Value;
84
85      var currentLayer = layers.SubScopes[layerNumber].SubScopes;
86      var prevLayer = layerNumber > 0 ? layers.SubScopes[layerNumber - 1].SubScopes : Enumerable.Empty<IScope>();
87
88      var ageLimit = layerNumber < numberOfLayers - 1 ? ageLimits[layerNumber] : int.MaxValue;
89
90      var matingPool =
91        from individual in currentLayer.Union(prevLayer)
92        let evalsCreated = ((IntValue)individual.Variables["EvalsCreated"].Value).Value
93        let age = (evaluations - evalsCreated) / popSize
94        where age < ageLimit
95        select (IScope)individual/*.Clone()*/;
96
97      foreach (var individual in matingPool) {
98        workingScope.SubScopes.Add(individual);
99      }
100      return base.Apply();
101    }
102  }
103}
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