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source: trunk/sources/HeuristicLab.Problems.VehicleRouting/3.4/Analyzer/BestAverageWorstTours/BestVRPToursMemorizer.cs @ 14185

Last change on this file since 14185 was 14185, checked in by swagner, 8 years ago

#2526: Updated year of copyrights in license headers

File size: 4.0 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2016 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 System.Linq;
23using HeuristicLab.Common;
24using HeuristicLab.Core;
25using HeuristicLab.Data;
26using HeuristicLab.Operators;
27using HeuristicLab.Parameters;
28using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
29
30namespace HeuristicLab.Problems.VehicleRouting {
31  [Item("BestVRPToursMemorizer", "An operator that updates the best VRP tour found so far in the scope three.")]
32  [StorableClass]
33  public class BestVRPToursMemorizer : SingleSuccessorOperator {
34    public ScopeTreeLookupParameter<DoubleValue> DistanceParameter {
35      get { return (ScopeTreeLookupParameter<DoubleValue>)Parameters["Distance"]; }
36    }
37    public ScopeTreeLookupParameter<DoubleValue> VehiclesUtilizedParameter {
38      get { return (ScopeTreeLookupParameter<DoubleValue>)Parameters["VehiclesUtilized"]; }
39    }
40
41    public ValueLookupParameter<DoubleValue> BestDistanceParameter {
42      get { return (ValueLookupParameter<DoubleValue>)Parameters["BestDistance"]; }
43    }
44    public ValueLookupParameter<DoubleValue> BestVehiclesUtilizedParameter {
45      get { return (ValueLookupParameter<DoubleValue>)Parameters["BestVehiclesUtilized"]; }
46    }
47
48    public BestVRPToursMemorizer()
49      : base() {
50      Parameters.Add(new ScopeTreeLookupParameter<DoubleValue>("Distance", "The distances of the VRP solutions which should be analyzed."));
51      Parameters.Add(new ScopeTreeLookupParameter<DoubleValue>("VehiclesUtilized", "The utilized vehicles of the VRP solutions which should be analyzed."));
52
53      Parameters.Add(new ValueLookupParameter<DoubleValue>("BestDistance", "The best distance found so far."));
54      Parameters.Add(new ValueLookupParameter<DoubleValue>("BestVehiclesUtilized", "The best vehicles utilized found so far."));
55
56    }
57
58    [StorableConstructor]
59    protected BestVRPToursMemorizer(bool deserializing) : base(deserializing) { }
60
61    public override IDeepCloneable Clone(Cloner cloner) {
62      return new BestVRPToursMemorizer(this, cloner);
63    }
64
65    protected BestVRPToursMemorizer(BestVRPToursMemorizer original, Cloner cloner)
66      : base(original, cloner) {
67    }
68
69    public override IOperation Apply() {
70      int i = DistanceParameter.ActualValue.Select((x, index) => new { index, x.Value }).OrderBy(x => x.Value).First().index;
71      if (BestDistanceParameter.ActualValue == null)
72        BestDistanceParameter.ActualValue = new DoubleValue(DistanceParameter.ActualValue[i].Value);
73      else if (DistanceParameter.ActualValue[i].Value <= BestDistanceParameter.ActualValue.Value)
74        BestDistanceParameter.ActualValue.Value = DistanceParameter.ActualValue[i].Value;
75
76      i = VehiclesUtilizedParameter.ActualValue.Select((x, index) => new { index, x.Value }).OrderBy(x => x.Value).First().index;
77      if (BestVehiclesUtilizedParameter.ActualValue == null)
78        BestVehiclesUtilizedParameter.ActualValue = new DoubleValue(VehiclesUtilizedParameter.ActualValue[i].Value);
79      else if (VehiclesUtilizedParameter.ActualValue[i].Value <= BestVehiclesUtilizedParameter.ActualValue.Value)
80        BestVehiclesUtilizedParameter.ActualValue.Value = VehiclesUtilizedParameter.ActualValue[i].Value;
81
82      return base.Apply();
83    }
84  }
85}
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