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source: trunk/sources/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/General/Crossovers/RandomParentCloneCrossover.cs @ 12012

Last change on this file since 12012 was 12012, checked in by ascheibe, 9 years ago

#2212 merged r12008, r12009, r12010 back into trunk

File size: 3.2 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 HeuristicLab.Common;
23using HeuristicLab.Core;
24using HeuristicLab.Optimization;
25using HeuristicLab.Parameters;
26using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
27using HeuristicLab.Problems.VehicleRouting.Interfaces;
28using HeuristicLab.Problems.VehicleRouting.Variants;
29
30namespace HeuristicLab.Problems.VehicleRouting.Encodings.General.Crossovers {
31  [Item("RandomParentCloneCrossover", "An operator which randomly chooses one parent and returns a clone.")]
32  [StorableClass]
33  public sealed class RandomParentCloneCrossover : VRPOperator, IStochasticOperator, IGeneralVRPOperator, IVRPCrossover {
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    private RandomParentCloneCrossover(bool deserializing) : base(deserializing) { }
48
49    public RandomParentCloneCrossover()
50      : base() {
51      Parameters.Add(new LookupParameter<IRandom>("Random", "The pseudo random number generator which should be used for stochastic manipulation operators."));
52
53      Parameters.Add(new ScopeTreeLookupParameter<IVRPEncoding>("Parents", "The parent permutations which should be crossed."));
54      ParentsParameter.ActualName = "VRPTours";
55      Parameters.Add(new LookupParameter<IVRPEncoding>("Child", "The child permutation resulting from the crossover."));
56      ChildParameter.ActualName = "VRPTours";
57    }
58
59    public override IDeepCloneable Clone(Cloner cloner) {
60      return new RandomParentCloneCrossover(this, cloner);
61    }
62
63    private RandomParentCloneCrossover(RandomParentCloneCrossover original, Cloner cloner)
64      : base(original, cloner) {
65    }
66
67    public override IOperation InstrumentedApply() {
68      if (RandomParameter.ActualValue.Next() < 0.5)
69        ChildParameter.ActualValue = ParentsParameter.ActualValue[0].Clone() as IVRPEncoding;
70      else
71        ChildParameter.ActualValue = ParentsParameter.ActualValue[1].Clone() as IVRPEncoding;
72
73      return base.InstrumentedApply();
74    }
75  }
76}
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