source: branches/SpectralKernelForGaussianProcesses/HeuristicLab.Optimization.Operators/3.3/ShakingOperator.cs @ 10479

Last change on this file since 10479 was 10479, checked in by gkronber, 6 years ago

#2124 merged all changes from trunk to prepare for trunk-reintegration

File size: 3.1 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2013 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.Optimization.Operators {
31  /// <summary>
32  /// A shaking operator for VNS.
33  /// </summary>
34  [Item("ShakingOperator", "A shaking operator for VNS that can be filled with arbitrary manipulation operators.")]
35  [StorableClass]
36  public class ShakingOperator<T> : CheckedMultiOperator<T>, IMultiNeighborhoodShakingOperator where T : class, IManipulator {
37
38    public IValueLookupParameter<IntValue> CurrentNeighborhoodIndexParameter {
39      get { return (IValueLookupParameter<IntValue>)Parameters["CurrentNeighborhoodIndex"]; }
40    }
41
42    public ILookupParameter<IntValue> NeighborhoodCountParameter {
43      get { return (ILookupParameter<IntValue>)Parameters["NeighborhoodCount"]; }
44    }
45
46    [StorableConstructor]
47    protected ShakingOperator(bool deserializing) : base(deserializing) { }
48    protected ShakingOperator(ShakingOperator<T> original, Cloner cloner) : base(original, cloner) { }
49    public override IDeepCloneable Clone(Cloner cloner) {
50      return new ShakingOperator<T>(this, cloner);
51    }
52    public ShakingOperator()
53      : base() {
54      Parameters.Add(new ValueLookupParameter<IntValue>("CurrentNeighborhoodIndex", "The index of the operator that should be applied (k)."));
55      Parameters.Add(new LookupParameter<IntValue>("NeighborhoodCount", "The number of operators that are available."));
56    }
57
58    public override IOperation InstrumentedApply() {
59      if (NeighborhoodCountParameter.ActualValue == null)
60        NeighborhoodCountParameter.ActualValue = new IntValue(Operators.CheckedItems.Count());
61      else NeighborhoodCountParameter.ActualValue.Value = Operators.CheckedItems.Count();
62
63      int index = CurrentNeighborhoodIndexParameter.ActualValue.Value;
64      var shaker = base.Operators.CheckedItems.SingleOrDefault(x => x.Index == index);
65
66      OperationCollection next = new OperationCollection(base.InstrumentedApply());
67      if (shaker.Value != null)
68        next.Insert(0, ExecutionContext.CreateChildOperation(shaker.Value));
69
70      return next;
71    }
72  }
73}
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