[6042] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[16453] | 3 | * Copyright (C) 2002-2019 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[6042] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System.Linq;
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| 23 | using HeuristicLab.Common;
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| 24 | using HeuristicLab.Core;
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| 25 | using HeuristicLab.Data;
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| 26 | using HeuristicLab.Operators;
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| 27 | using HeuristicLab.Parameters;
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| 28 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 29 |
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| 30 | namespace HeuristicLab.Optimization.Operators {
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| 31 | /// <summary>
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| 32 | /// A shaking operator for VNS.
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| 33 | /// </summary>
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| 34 | [Item("ShakingOperator", "A shaking operator for VNS that can be filled with arbitrary manipulation operators.")]
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| 35 | [StorableClass]
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| 36 | public class ShakingOperator<T> : CheckedMultiOperator<T>, IMultiNeighborhoodShakingOperator where T : class, IManipulator {
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| 37 |
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| 38 | public IValueLookupParameter<IntValue> CurrentNeighborhoodIndexParameter {
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| 39 | get { return (IValueLookupParameter<IntValue>)Parameters["CurrentNeighborhoodIndex"]; }
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| 40 | }
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| 41 |
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| 42 | public ILookupParameter<IntValue> NeighborhoodCountParameter {
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| 43 | get { return (ILookupParameter<IntValue>)Parameters["NeighborhoodCount"]; }
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| 44 | }
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| 45 |
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| 46 | [StorableConstructor]
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| 47 | protected ShakingOperator(bool deserializing) : base(deserializing) { }
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| 48 | protected ShakingOperator(ShakingOperator<T> original, Cloner cloner) : base(original, cloner) { }
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| 49 | public override IDeepCloneable Clone(Cloner cloner) {
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| 50 | return new ShakingOperator<T>(this, cloner);
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| 51 | }
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| 52 | public ShakingOperator()
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| 53 | : base() {
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| 54 | Parameters.Add(new ValueLookupParameter<IntValue>("CurrentNeighborhoodIndex", "The index of the operator that should be applied (k)."));
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| 55 | Parameters.Add(new LookupParameter<IntValue>("NeighborhoodCount", "The number of operators that are available."));
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| 56 | }
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| 57 |
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[10295] | 58 | public override IOperation InstrumentedApply() {
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[6042] | 59 | if (NeighborhoodCountParameter.ActualValue == null)
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| 60 | NeighborhoodCountParameter.ActualValue = new IntValue(Operators.CheckedItems.Count());
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| 61 | else NeighborhoodCountParameter.ActualValue.Value = Operators.CheckedItems.Count();
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| 62 |
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| 63 | int index = CurrentNeighborhoodIndexParameter.ActualValue.Value;
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| 64 | var shaker = base.Operators.CheckedItems.SingleOrDefault(x => x.Index == index);
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| 65 |
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[10295] | 66 | OperationCollection next = new OperationCollection(base.InstrumentedApply());
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[6042] | 67 | if (shaker.Value != null)
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| 68 | next.Insert(0, ExecutionContext.CreateChildOperation(shaker.Value));
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| 69 |
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| 70 | return next;
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| 71 | }
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| 72 | }
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| 73 | }
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