source: branches/2520_PersistenceReintegration/HeuristicLab.Encodings.PermutationEncoding/3.3/ShakingOperators/PermutationShakingOperator.cs @ 16453

Last change on this file since 16453 was 16453, checked in by jkarder, 10 months ago

#2520: updated year of copyrights

File size: 3.8 KB
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1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2019 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.Collections;
25using HeuristicLab.Common;
26using HeuristicLab.Core;
27using HeuristicLab.Optimization;
28using HeuristicLab.Optimization.Operators;
29using HeuristicLab.Parameters;
30using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
31using HeuristicLab.PluginInfrastructure;
32
33namespace HeuristicLab.Encodings.PermutationEncoding {
34  /// <summary>
35  /// A shaking operator for VNS.
36  /// </summary>
37  [Item("PermutationShakingOperator", "A shaking operator for VNS which uses available manipulation operators to perform the shaking.")]
38  [StorableClass]
39  public class PermutationShakingOperator : ShakingOperator<IPermutationManipulator>, IPermutationMultiNeighborhoodShakingOperator, IStochasticOperator {
40
41    public ILookupParameter<Permutation> PermutationParameter {
42      get { return (ILookupParameter<Permutation>)Parameters["Permutation"]; }
43    }
44
45    public ILookupParameter<IRandom> RandomParameter {
46      get { return (LookupParameter<IRandom>)Parameters["Random"]; }
47    }
48
49    [StorableConstructor]
50    protected PermutationShakingOperator(bool deserializing) : base(deserializing) { }
51    protected PermutationShakingOperator(PermutationShakingOperator original, Cloner cloner) : base(original, cloner) { }
52    public override IDeepCloneable Clone(Cloner cloner) {
53      return new PermutationShakingOperator(this, cloner);
54    }
55    public PermutationShakingOperator()
56      : base() {
57      Parameters.Add(new LookupParameter<Permutation>("Permutation", "The permutation to shake."));
58      Parameters.Add(new LookupParameter<IRandom>("Random", "The random number generator that will be used for stochastic shaking operators."));
59      foreach (IPermutationManipulator shaker in ApplicationManager.Manager.GetInstances<IPermutationManipulator>().OrderBy(x => x.Name))
60        if (!(shaker is MultiPermutationManipulator)) Operators.Add(shaker);
61    }
62
63    #region Wiring of some parameters
64    protected override void Operators_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<IPermutationManipulator>> e) {
65      base.Operators_ItemsAdded(sender, e);
66      ParameterizeOperators(e.Items);
67    }
68
69    protected override void Operators_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedItem<IPermutationManipulator>> e) {
70      base.Operators_ItemsReplaced(sender, e);
71      ParameterizeOperators(e.Items);
72    }
73
74    private void ParameterizeOperators(IEnumerable<IndexedItem<IPermutationManipulator>> items) {
75      if (items.Any()) {
76        foreach (IStochasticOperator op in items.Select(x => x.Value).OfType<IStochasticOperator>())
77          op.RandomParameter.ActualName = RandomParameter.Name;
78        foreach (IPermutationManipulator op in items.Select(x => x.Value).OfType<IPermutationManipulator>())
79          op.PermutationParameter.ActualName = PermutationParameter.Name;
80      }
81    }
82    #endregion
83  }
84}
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