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source: branches/LearningClassifierSystems/HeuristicLab.Optimization.Operators.LCS/3.3/GAssist/DefaultRule/MinorDefaultRule.cs @ 9605

Last change on this file since 9605 was 9605, checked in by sforsten, 11 years ago

#1980:

  • set plugin dependencies
  • added smart initialization
  • added hierarchical selection
  • fixed major and minor default rule
  • fixed several smaller bugs
  • some refactoring has been done
File size: 2.9 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2012 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.Collections.Generic;
23using System.Linq;
24using HeuristicLab.Common;
25using HeuristicLab.Core;
26using HeuristicLab.Data;
27using HeuristicLab.Parameters;
28using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
29
30namespace HeuristicLab.Optimization.Operators.LCS.DefaultRule {
31  [Item("MinorDefaultRule", "Description missing")]
32  [StorableClass]
33  public class MinorDefaultRule : DefaultRuleOperator, IStochasticOperator {
34
35    #region Parameter Properties
36    public ILookupParameter<IRandom> RandomParameter {
37      get { return (ILookupParameter<IRandom>)Parameters["Random"]; }
38    }
39    #endregion
40
41    [StorableConstructor]
42    protected MinorDefaultRule(bool deserializing) : base(deserializing) { }
43    protected MinorDefaultRule(MinorDefaultRule original, Cloner cloner)
44      : base(original, cloner) {
45    }
46    public MinorDefaultRule()
47      : base() {
48      Parameters.Add(new LookupParameter<IRandom>("Random"));
49    }
50    public override IDeepCloneable Clone(Cloner cloner) {
51      return new MinorDefaultRule(this, cloner);
52    }
53
54    public override IOperation Apply() {
55      if (NichingParameter.ActualValue == null) {
56        NichingParameter.ActualValue = new BoolValue(false);
57        NichesParameter.ActualValue = new IntValue(1);
58        var problemData = GAssistNichesProblemDataParameter.ActualValue;
59        var trainingIndices = problemData.TrainingIndices;
60        var actions = problemData.FetchAction(trainingIndices);
61
62        Dictionary<IGAssistNiche, int> classCount = new Dictionary<IGAssistNiche, int>(actions.First().Comparer);
63        foreach (var niche in GAssistNichesProblemDataParameter.ActualValue.GetPossibleNiches()) {
64          classCount[niche] = 0;
65        }
66        foreach (var action in actions) {
67          classCount[action] += 1;
68        }
69        var minAction = classCount.MinItems(x => x.Value).ToList();
70        var index = RandomParameter.ActualValue.Next(0, minAction.Count);
71        DefaultClassParameter.ActualValue = minAction[index].Key;
72      }
73      return base.Apply();
74    }
75  }
76}
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