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source: stable/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/Prins/Crossovers/PrinsCrossover.cs @ 15584

Last change on this file since 15584 was 15584, checked in by swagner, 6 years ago

#2640: Updated year of copyrights in license headers on stable

File size: 2.8 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 HeuristicLab.Common;
23using HeuristicLab.Core;
24using HeuristicLab.Optimization;
25using HeuristicLab.Parameters;
26using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
27using HeuristicLab.Problems.VehicleRouting.Encodings.General;
28using HeuristicLab.Problems.VehicleRouting.Interfaces;
29
30namespace HeuristicLab.Problems.VehicleRouting.Encodings.Prins {
31  [Item("PrinsCrossover", "An operator which crosses two VRP representations.")]
32  [StorableClass]
33  public abstract class PrinsCrossover : VRPCrossover, IStochasticOperator, IPrinsOperator {
34
35    public ILookupParameter<IRandom> RandomParameter {
36      get { return (LookupParameter<IRandom>)Parameters["Random"]; }
37    }
38
39    [StorableConstructor]
40    protected PrinsCrossover(bool deserializing) : base(deserializing) { }
41
42    public PrinsCrossover()
43      : base() {
44      Parameters.Add(new LookupParameter<IRandom>("Random", "The pseudo random number generator which should be used for stochastic manipulation operators."));
45    }
46
47    protected PrinsCrossover(PrinsCrossover original, Cloner cloner)
48      : base(original, cloner) {
49    }
50
51    protected abstract PrinsEncoding Crossover(IRandom random, PrinsEncoding parent1, PrinsEncoding parent2);
52
53    public override IOperation InstrumentedApply() {
54      ItemArray<IVRPEncoding> parents = new ItemArray<IVRPEncoding>(ParentsParameter.ActualValue.Length);
55      for (int i = 0; i < ParentsParameter.ActualValue.Length; i++) {
56        IVRPEncoding solution = ParentsParameter.ActualValue[i];
57
58        if (!(solution is PrinsEncoding)) {
59          parents[i] = PrinsEncoding.ConvertFrom(solution, ProblemInstance);
60        } else {
61          parents[i] = solution;
62        }
63      }
64      ParentsParameter.ActualValue = parents;
65
66      ChildParameter.ActualValue =
67        Crossover(RandomParameter.ActualValue, parents[0] as PrinsEncoding, parents[1] as PrinsEncoding);
68
69      return base.InstrumentedApply();
70    }
71  }
72}
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