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source: branches/2434_crossvalidation/HeuristicLab.Problems.PTSP/3.3/Moves/TwoOpt/PTSPAnalyticalInversionMoveEvaluator.cs

Last change on this file was 13470, checked in by abeham, 9 years ago

#2221:

  • implemented review comments
    • hid rng as private class, implemented djb2 hash function (hash function implementation may also change)
    • added missing probabilities
    • base class for instance providers
    • prebuild event events
    • build platforms
    • unit test will be removed on trunk integration
    • corrected assembly file version
    • distance calculator parameter was not hidden, can be changed by user, updates distance matrix
    • fixed performance problems (ouch!) also for estimated ptsp (inlined GetDistance method)
  • added moves (full evaluation) for analytical tsp
  • added local improvement operators for analytical ptsp
  • added recalculation of distance matrix when parameters change
  • still lots of other changes
File size: 2.7 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 System;
23using HeuristicLab.Common;
24using HeuristicLab.Core;
25using HeuristicLab.Data;
26using HeuristicLab.Encodings.PermutationEncoding;
27using HeuristicLab.Parameters;
28using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
29
30namespace HeuristicLab.Problems.PTSP {
31  [Item("PTSP Analytical Inversion Move Evaluator", "Evaluates an inversion move (2-opt) by a full solution evaluation.")]
32  [StorableClass]
33  public class PTSPAnalyticalInversionMoveEvaluator : AnalyticalPTSPMoveEvaluator, IPermutationInversionMoveOperator {
34
35    public ILookupParameter<InversionMove> InversionMoveParameter {
36      get { return (ILookupParameter<InversionMove>)Parameters["InversionMove"]; }
37    }
38
39    [StorableConstructor]
40    protected PTSPAnalyticalInversionMoveEvaluator(bool deserializing) : base(deserializing) { }
41    protected PTSPAnalyticalInversionMoveEvaluator(PTSPAnalyticalInversionMoveEvaluator original, Cloner cloner) : base(original, cloner) { }
42    public PTSPAnalyticalInversionMoveEvaluator()
43      : base() {
44      Parameters.Add(new LookupParameter<InversionMove>("InversionMove", "The move to evaluate."));
45    }
46
47    public override IDeepCloneable Clone(Cloner cloner) {
48      return new PTSPAnalyticalInversionMoveEvaluator(this, cloner);
49    }
50
51    public static double EvaluateMove(Permutation tour, InversionMove move, Func<int, int, double> distance, DoubleArray probabilities) {
52      var afterMove = (Permutation)tour.Clone();
53      InversionManipulator.Apply(afterMove, move.Index1, move.Index2);
54      return AnalyticalProbabilisticTravelingSalesmanProblem.Evaluate(afterMove, distance, probabilities);
55    }
56
57    protected override double EvaluateMove(Permutation tour, Func<int, int, double> distance, DoubleArray probabilities) {
58      return EvaluateMove(tour, InversionMoveParameter.ActualValue, distance, probabilities);
59    }
60  }
61}
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