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source: branches/HiveHiveEngine/HeuristicLab.Problems.VehicleRouting/3.3/Encodings/Alba/Moves/LambdaInterchange/AlbaStochasticLambdaInterchangeMutliMoveGenerator.cs @ 13401

Last change on this file since 13401 was 7259, checked in by swagner, 13 years ago

Updated year of copyrights to 2012 (#1716)

File size: 3.3 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2012 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 HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
28
29namespace HeuristicLab.Problems.VehicleRouting.Encodings.Alba {
30  [Item("AlbaStochasticLambdaInterchangeMultiMoveGenerator", "Generates multiple random lambda interchange 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.")]
31  [StorableClass]
32  public sealed class AlbaStochasticLambdaInterchangeMultiMoveGenerator : AlbaLambdaInterchangeMoveGenerator, IStochasticOperator, IMultiMoveGenerator, IAlbaLambdaInterchangeMoveOperator {
33    public ILookupParameter<IRandom> RandomParameter {
34      get { return (ILookupParameter<IRandom>)Parameters["Random"]; }
35    }
36
37    public IValueLookupParameter<IntValue> SampleSizeParameter {
38      get { return (IValueLookupParameter<IntValue>)Parameters["SampleSize"]; }
39    }
40
41    [StorableConstructor]
42    private AlbaStochasticLambdaInterchangeMultiMoveGenerator(bool deserializing) : base(deserializing) { }
43    private AlbaStochasticLambdaInterchangeMultiMoveGenerator(AlbaStochasticLambdaInterchangeMultiMoveGenerator original, Cloner cloner) : base(original, cloner) { }
44    public AlbaStochasticLambdaInterchangeMultiMoveGenerator()
45      : base() {
46      Parameters.Add(new LookupParameter<IRandom>("Random", "The random number generator."));
47      Parameters.Add(new ValueLookupParameter<IntValue>("SampleSize", "The number of moves to generate."));
48    }
49    public override IDeepCloneable Clone(Cloner cloner) {
50      return new AlbaStochasticLambdaInterchangeMultiMoveGenerator(this, cloner);
51    }
52
53    public static AlbaLambdaInterchangeMove[] GenerateAllMoves(AlbaEncoding individual, int lambda, int sampleSize, IRandom random) {
54      AlbaLambdaInterchangeMove[] moves = new AlbaLambdaInterchangeMove[sampleSize];
55      for (int i = 0; i < sampleSize; i++) {
56        moves[i] = AlbaStochasticLambdaInterchangeSingleMoveGenerator.Apply(
57          individual, individual.Cities, lambda, random);
58      }
59
60      return moves;
61    }
62
63    protected override AlbaLambdaInterchangeMove[] GenerateMoves(AlbaEncoding individual, int lambda) {
64      int sampleSize = SampleSizeParameter.ActualValue.Value;
65
66      return GenerateAllMoves(individual, lambda, sampleSize, RandomParameter.ActualValue);
67    }
68  }
69}
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