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source: branches/2434_crossvalidation/HeuristicLab.Problems.PTSP/3.3/Moves/TwoPointFiveOpt/TwoPointFiveMoveGenerator.cs

Last change on this file was 13412, checked in by abeham, 9 years ago

#2221:

  • Completely refactored PTSP branch
    • Added two sets of problem instances based on TSPLIB: homogeneous and heterogeneous
    • Implemented missing EvaluateByCoordinates for 1-shift moves
    • Made it clear that move evaluators are for estimated PTSP only
    • Changed parameter realization from a rather strange list of list of ints to a list of bool arrays
    • Reusing code of the 2-opt and 1-shift move evaluators in 2.5 move evaluator
    • Introducing distance calculators to properly handle the case when no distance matrix is given (previous code only worked with distance matrix and without only with euclidean distance in some settings)
    • Fixed several smaller code issues: protected, static, method parameters, copy & paste, interfaces, naming, parameters, serialization hooks, license headers, doc comments, data types
File size: 3.0 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2015 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.Encodings.PermutationEncoding;
25using HeuristicLab.Operators;
26using HeuristicLab.Optimization;
27using HeuristicLab.Parameters;
28using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
29
30
31namespace HeuristicLab.Problems.PTSP {
32  [Item("TwoPointFiveMoveGenerator", "Base class for all inversion and shift (2.5-opt) move generators.")]
33  [StorableClass]
34  public abstract class TwoPointFiveMoveGenerator : SingleSuccessorOperator, ITwoPointFiveMoveOperator, IMoveGenerator {
35    public override bool CanChangeName {
36      get { return false; }
37    }
38
39    public ILookupParameter<Permutation> PermutationParameter {
40      get { return (ILookupParameter<Permutation>)Parameters["Permutation"]; }
41    }
42    public ILookupParameter<TwoPointFiveMove> TwoPointFiveMoveParameter {
43      get { return (LookupParameter<TwoPointFiveMove>)Parameters["TwoPointFiveMove"]; }
44    }
45
46    [StorableConstructor]
47    protected TwoPointFiveMoveGenerator(bool deserializing) : base(deserializing) { }
48    protected TwoPointFiveMoveGenerator(TwoPointFiveMoveGenerator original, Cloner cloner) : base(original, cloner) { }
49    protected TwoPointFiveMoveGenerator()
50      : base() {
51      Parameters.Add(new LookupParameter<Permutation>("Permutation", "The permutation for which moves should be generated."));
52      Parameters.Add(new LookupParameter<TwoPointFiveMove>("TwoPointFiveMove", "The moves that should be generated in subscopes."));
53      Parameters.Add(new ScopeParameter("CurrentScope", "The current scope where the moves should be added as subscopes."));
54    }
55
56    public override IOperation Apply() {
57      var p = PermutationParameter.ActualValue;
58      var moves = GenerateMoves(p);
59      var moveScopes = new Scope[moves.Length];
60      for (int i = 0; i < moveScopes.Length; i++) {
61        moveScopes[i] = new Scope(i.ToString());
62        moveScopes[i].Variables.Add(new Variable(TwoPointFiveMoveParameter.ActualName, moves[i]));
63      }
64      ExecutionContext.Scope.SubScopes.AddRange(moveScopes);
65      return base.Apply();
66    }
67
68    protected abstract TwoPointFiveMove[] GenerateMoves(Permutation permutation);
69  }
70}
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