source: branches/2936_GQAPIntegration/HeuristicLab.Problems.GeneralizedQuadraticAssignment/3.3/Operators/Shakers/NMoveShakingOperator.cs @ 16712

Last change on this file since 16712 was 16712, checked in by gkronber, 3 months ago

#2936: adapted branch to new persistence (works with HL trunk r16711)

File size: 4.0 KB
Line 
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 HeuristicLab.Common;
23using HeuristicLab.Core;
24using HeuristicLab.Data;
25using HeuristicLab.Encodings.IntegerVectorEncoding;
26using HeuristicLab.Operators;
27using HeuristicLab.Optimization;
28using HeuristicLab.Parameters;
29using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
30using HEAL.Attic;
31
32namespace HeuristicLab.Problems.GeneralizedQuadraticAssignment.Operators {
33  [Item("NMoveShakingOperator", "Performs a number of shaking operations that increase in strength.")]
34  [StorableType("22D9F959-9BAB-497D-B593-FF19BD8CE9AB")]
35  public class NMoveShakingOperator : SingleSuccessorOperator, IProblemInstanceAwareGQAPOperator,
36    IAssignmentAwareGQAPOperator, IMultiNeighborhoodShakingOperator, IStochasticOperator {
37
38
39    public ILookupParameter<GQAPInstance> ProblemInstanceParameter {
40      get { return (ILookupParameter<GQAPInstance>)Parameters["ProblemInstance"]; }
41    }
42    public ILookupParameter<IntegerVector> AssignmentParameter {
43      get { return (ILookupParameter<IntegerVector>)Parameters["Assignment"]; }
44    }
45    public IValueLookupParameter<IntValue> CurrentNeighborhoodIndexParameter {
46      get { return (IValueLookupParameter<IntValue>)Parameters["CurrentNeighborhoodIndex"]; }
47    }
48    public ILookupParameter<IntValue> NeighborhoodCountParameter {
49      get { return (ILookupParameter<IntValue>)Parameters["NeighborhoodCount"]; }
50    }
51    public ILookupParameter<IRandom> RandomParameter {
52      get { return (ILookupParameter<IRandom>)Parameters["Random"]; }
53    }
54
55    [StorableConstructor]
56    protected NMoveShakingOperator(StorableConstructorFlag _) : base(_) { }
57    protected NMoveShakingOperator(NMoveShakingOperator original, Cloner cloner) : base(original, cloner) { }
58    public NMoveShakingOperator() {
59      Parameters.Add(new LookupParameter<GQAPInstance>("ProblemInstance", GQAP.ProblemInstanceDescription));
60      Parameters.Add(new LookupParameter<IntegerVector>("Assignment", GQAPSolutionCreator.AssignmentDescription));
61      Parameters.Add(new ValueLookupParameter<IntValue>("CurrentNeighborhoodIndex", "The index of the operator that should be applied (k)."));
62      Parameters.Add(new LookupParameter<IntValue>("NeighborhoodCount", "The number of operators that are available."));
63      Parameters.Add(new LookupParameter<IRandom>("Random", "The random number generator to use."));
64    }
65
66    public override IDeepCloneable Clone(Cloner cloner) {
67      return new NMoveShakingOperator(this, cloner);
68    }
69
70    public override IOperation Apply() {
71      var random = RandomParameter.ActualValue;
72      var assignment = AssignmentParameter.ActualValue;
73      var capacities = ProblemInstanceParameter.ActualValue.Capacities;
74
75      if (NeighborhoodCountParameter.ActualValue == null)
76        NeighborhoodCountParameter.ActualValue = new IntValue(assignment.Length);
77      else NeighborhoodCountParameter.ActualValue.Value = assignment.Length;
78
79      int index = CurrentNeighborhoodIndexParameter.ActualValue.Value;
80
81      var move = StochasticNMoveSingleMoveGenerator.GenerateUpToN(random, assignment, index + 1, capacities);
82      NMoveMaker.Apply(assignment, move);
83
84      return base.Apply();
85    }
86  }
87}
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