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source: branches/2521_ProblemRefactoring/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/Alba/Moves/IntraRouteInversion/AlbaStochasticIntraRouteInversionMutliMoveGenerator.cs @ 17698

Last change on this file since 17698 was 17698, checked in by abeham, 4 years ago

#2521: working on VRP (WIP)

File size: 3.3 KB
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1#region License Information
2/* HeuristicLab
3 * Copyright (C) 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.Optimization;
26using HeuristicLab.Parameters;
27using HEAL.Attic;
28using HeuristicLab.Problems.VehicleRouting.Encodings.General;
29using HeuristicLab.Problems.VehicleRouting.Interfaces;
30
31namespace HeuristicLab.Problems.VehicleRouting.Encodings.Alba {
32  [Item("AlbaStochasticIntraRouteInversionMultiMoveGenerator", "Generates multiple random intra route inversion moves from a given VRP encoding.  It is implemented as described in Alba, E. and Dorronsoro, B. (2004). Solving the Vehicle Routing Problem by Using Cellular Genetic Algorithms.")]
33  [StorableType("16DCDE21-1817-467B-B3E2-06BEF35541BD")]
34  public sealed class AlbaStochasticIntraRouteInversionMultiMoveGenerator : AlbaIntraRouteInversionMoveGenerator, IStochasticOperator,
35    IMultiMoveGenerator, IAlbaIntraRouteInversionMoveOperator, IMultiVRPMoveGenerator {
36    public ILookupParameter<IRandom> RandomParameter {
37      get { return (ILookupParameter<IRandom>)Parameters["Random"]; }
38    }
39
40    public IValueLookupParameter<IntValue> SampleSizeParameter {
41      get { return (IValueLookupParameter<IntValue>)Parameters["SampleSize"]; }
42    }
43
44    [StorableConstructor]
45    private AlbaStochasticIntraRouteInversionMultiMoveGenerator(StorableConstructorFlag _) : base(_) { }
46
47    public AlbaStochasticIntraRouteInversionMultiMoveGenerator()
48      : base() {
49      Parameters.Add(new LookupParameter<IRandom>("Random", "The random number generator."));
50      Parameters.Add(new ValueLookupParameter<IntValue>("SampleSize", "The number of moves to generate."));
51    }
52
53    public override IDeepCloneable Clone(Cloner cloner) {
54      return new AlbaStochasticIntraRouteInversionMultiMoveGenerator(this, cloner);
55    }
56
57    private AlbaStochasticIntraRouteInversionMultiMoveGenerator(AlbaStochasticIntraRouteInversionMultiMoveGenerator original, Cloner cloner)
58      : base(original, cloner) {
59    }
60
61    protected override AlbaIntraRouteInversionMove[] GenerateMoves(AlbaEncodedSolution individual, IVRPProblemInstance problemInstance) {
62      int sampleSize = SampleSizeParameter.ActualValue.Value;
63
64      AlbaIntraRouteInversionMove[] moves = new AlbaIntraRouteInversionMove[sampleSize];
65      for (int i = 0; i < sampleSize; i++) {
66        moves[i] = AlbaStochasticIntraRouteInversionSingleMoveGenerator.Apply(
67          individual, problemInstance.Cities.Value, RandomParameter.ActualValue);
68      }
69
70      return moves;
71    }
72  }
73}
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