source: branches/VRP/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/Alba/Crossovers/AlbaCrossover.cs @ 4365

Last change on this file since 4365 was 4365, checked in by svonolfe, 12 years ago

Worked on VRP operators (WIP) (#1177)

File size: 3.3 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 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.Core;
23using HeuristicLab.Encodings.PermutationEncoding;
24using HeuristicLab.Parameters;
25using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
26using HeuristicLab.Data;
27using HeuristicLab.Optimization;
28using HeuristicLab.Problems.VehicleRouting.Interfaces;
29
30namespace HeuristicLab.Problems.VehicleRouting.Encodings.Alba {
31  [Item("AlbaCrossover", "An operator which crosses two VRP representations.")]
32  [StorableClass]
33  public abstract class AlbaCrossover : AlbaOperator, IVRPCrossover, IStochasticOperator {
34    public ILookupParameter<IRandom> RandomParameter {
35      get { return (LookupParameter<IRandom>)Parameters["Random"]; }
36    }
37
38    public ILookupParameter<ItemArray<IVRPEncoding>> ParentsParameter {
39      get { return (ScopeTreeLookupParameter<IVRPEncoding>)Parameters["Parents"]; }
40    }
41
42    public ILookupParameter<IVRPEncoding> ChildParameter {
43      get { return (ILookupParameter<IVRPEncoding>)Parameters["Child"]; }
44    }
45   
46    [StorableConstructor]
47    protected AlbaCrossover(bool deserializing) : base(deserializing) {
48    }
49
50    public AlbaCrossover()
51      : base() {
52      Parameters.Add(new LookupParameter<IRandom>("Random", "The pseudo random number generator which should be used for stochastic manipulation operators."));
53
54      Parameters.Add(new ScopeTreeLookupParameter<IVRPEncoding>("Parents", "The parent permutations which should be crossed."));
55      ParentsParameter.ActualName = "VRPTours";
56      Parameters.Add(new LookupParameter<IVRPEncoding>("Child", "The child permutation resulting from the crossover."));
57      ChildParameter.ActualName = "VRPTours";
58    }
59
60    protected abstract AlbaEncoding Crossover(IRandom random, AlbaEncoding parent1, AlbaEncoding parent2);
61
62    public override IOperation Apply() {
63      ItemArray<IVRPEncoding> parents = new ItemArray<IVRPEncoding>(ParentsParameter.ActualValue.Length);
64      for (int i = 0; i < ParentsParameter.ActualValue.Length; i++) {
65        IVRPEncoding solution = ParentsParameter.ActualValue[i];
66
67        /*if (!(solution is AlbaEncoding)) {
68          parents[i] = AlbaEncoding.ConvertFrom(solution, VehiclesParameter.ActualValue.Value,
69            DistanceMatrixParameter);
70        } else*/ {
71          parents[i] = solution;
72        }
73      }
74      ParentsParameter.ActualValue = parents;
75
76      ChildParameter.ActualValue =
77        Crossover(RandomParameter.ActualValue, parents[0] as AlbaEncoding, parents[1] as AlbaEncoding); 
78
79      return base.Apply();
80    }
81  }
82}
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