source: branches/2839_HiveProjectManagement/HeuristicLab.Encodings.LinearLinkageEncoding/3.4/Creators/ExactGroupsLinearLinkageCreator.cs @ 16057

Last change on this file since 16057 was 16057, checked in by jkarder, 15 months ago

#2839:

File size: 2.9 KB
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1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2018 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;
29using HeuristicLab.Random;
30
31namespace HeuristicLab.Encodings.LinearLinkageEncoding {
32  [Item("Exactgroups Linear Linkage Creator", "Creates a random linear linkage LLE encoded solution with a given number of equal-sized groups.")]
33  [StorableClass]
34  public sealed class ExactGroupsLinearLinkageCreator : LinearLinkageCreator {
35
36    public IValueLookupParameter<IntValue> ExactGroupsParameter {
37      get { return (IValueLookupParameter<IntValue>)Parameters["ExactGroups"]; }
38    }
39
40    public IntValue ExactGroups {
41      get { return ExactGroupsParameter.Value; }
42      set { ExactGroupsParameter.Value = value; }
43    }
44
45    [StorableConstructor]
46    private ExactGroupsLinearLinkageCreator(bool deserializing) : base(deserializing) { }
47    private ExactGroupsLinearLinkageCreator(ExactGroupsLinearLinkageCreator original, Cloner cloner) : base(original, cloner) { }
48
49    public ExactGroupsLinearLinkageCreator() {
50      Parameters.Add(new ValueLookupParameter<IntValue>("ExactGroups", "The exact number of equal-sized groups to create.", new IntValue(3)));
51    }
52
53    public override IDeepCloneable Clone(Cloner cloner) {
54      return new ExactGroupsLinearLinkageCreator(this, cloner);
55    }
56
57    public static LinearLinkage Apply(IRandom random, int length, int groups) {
58      var groupNumbers = Enumerable.Range(0, length).Select(x => x % groups).Shuffle(random);
59      var grouping = Enumerable.Range(0, groups).Select(x => new List<int>()).ToList();
60      var idx = 0;
61      foreach (var g in groupNumbers)
62        grouping[g].Add(idx++);
63
64      return LinearLinkage.FromGroups(length, grouping);
65    }
66
67    protected override LinearLinkage Create(IRandom random, int length) {
68      var groups = ExactGroupsParameter.ActualValue.Value;
69      return Apply(random, length, groups);
70    }
71  }
72}
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