source: branches/2936_GQAPIntegration/HeuristicLab.Problems.GeneralizedQuadraticAssignment/3.3/Moves/GQAPNMoveGenerator.cs @ 16077

Last change on this file since 16077 was 16077, checked in by abeham, 12 months ago

#2936: Added integration branch

File size: 3.0 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 System.Collections.Generic;
23using System.Linq;
24using HeuristicLab.Common;
25using HeuristicLab.Core;
26using HeuristicLab.Data;
27using HeuristicLab.Encodings.IntegerVectorEncoding;
28using HeuristicLab.Parameters;
29using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
30
31namespace HeuristicLab.Problems.GeneralizedQuadraticAssignment {
32  [Item("N-Move Generator", "Base class for move operators that generate N-Move moves.")]
33  [StorableClass]
34  public abstract class GQAPNMoveGenerator : GQAPMoveGenerator, IGQAPNMoveOperator {
35
36    #region Parameter Descriptions
37    public static readonly string MoveDescription = "Moves represent changes to the current solution. The n-move changes the assignment of up to or exactly n equipments.";
38    #endregion
39
40    public ILookupParameter<NMove> MoveParameter {
41      get { return (ILookupParameter<NMove>)Parameters["Move"]; }
42    }
43    public IValueLookupParameter<IntValue> NParameter {
44      get { return (IValueLookupParameter<IntValue>)Parameters["N"]; }
45    }
46
47    [StorableConstructor]
48    protected GQAPNMoveGenerator(bool deserializing) : base(deserializing) { }
49    protected GQAPNMoveGenerator(GQAPNMoveGenerator original, Cloner cloner) : base(original, cloner) { }
50    public GQAPNMoveGenerator()
51      : base() {
52      Parameters.Add(new LookupParameter<NMove>("Move", MoveDescription));
53      Parameters.Add(new ValueLookupParameter<IntValue>("N", "The maximum number of equipment(s) that should be moved.", new IntValue(2)));
54    }
55
56    public override IOperation Apply() {
57      List<Scope> scopes = new List<Scope>();
58      int counter = 0;
59      string name = MoveParameter.TranslatedName;
60      foreach (var move in GenerateMoves(AssignmentParameter.ActualValue, NParameter.ActualValue.Value, ProblemInstanceParameter.ActualValue)) {
61        scopes.Add(new Scope(counter.ToString()));
62        scopes.Last().Variables.Add(new Variable(name, move));
63        counter++;
64      }
65      ExecutionContext.Scope.SubScopes.AddRange(scopes);
66      return base.Apply();
67    }
68
69    public abstract IEnumerable<NMove> GenerateMoves(IntegerVector assignment, int n, GQAPInstance problemInstance);
70  }
71}
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