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source: trunk/sources/HeuristicLab.Problems.VehicleRouting/3.3/Encodings/Alba/Moves/LambdaInterchange/LambdaInterchangeMoveMaker.cs @ 4206

Last change on this file since 4206 was 4206, checked in by svonolfe, 14 years ago

Updated naming and description of the VRP operators (#1039)

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.Data;
24using HeuristicLab.Operators;
25using HeuristicLab.Optimization;
26using HeuristicLab.Parameters;
27using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
28using System.Collections.Generic;
29
30namespace HeuristicLab.Problems.VehicleRouting.Encodings.Alba {
31  [Item("LambdaInterchangeMoveMaker", "Peforms a lambda interchange moves on a given VRP encoding and updates the quality. It is implemented as described in Alba, E. and Dorronsoro, B. (2004). Solving the Vehicle Routing Problem by Using Cellular Genetic Algorithms.")]
32  [StorableClass]
33  public class LambdaInterchangeMoveMaker : AlbaMoveMaker, IAlbaLambdaInterchangeMoveOperator, IMoveMaker {
34    public override bool CanChangeName {
35      get { return false; }
36    }
37    public ILookupParameter<DoubleValue> QualityParameter {
38      get { return (ILookupParameter<DoubleValue>)Parameters["Quality"]; }
39    }
40    public ILookupParameter<DoubleValue> MoveQualityParameter {
41      get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
42    }
43    public ILookupParameter<LambdaInterchangeMove> LambdaInterchangeMoveParameter {
44      get { return (ILookupParameter<LambdaInterchangeMove>)Parameters["LambdaInterchangeMove"]; }
45    }
46
47    [StorableConstructor]
48    private LambdaInterchangeMoveMaker(bool deserializing) : base(deserializing) { }
49
50    public LambdaInterchangeMoveMaker()
51      : base() {
52      Parameters.Add(new LookupParameter<DoubleValue>("Quality", "The quality of the solution."));
53      Parameters.Add(new LookupParameter<LambdaInterchangeMove>("LambdaInterchangeMove", "The move to make."));
54      Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The relative quality of the move."));
55    }
56
57    public static void Apply(AlbaEncoding solution, LambdaInterchangeMove move) {
58      LambdaInterchangeManipulator.Apply(
59        solution,
60        move.Tour1, move.Position1, move.Length1,
61        move.Tour2, move.Position2, move.Length2);
62    }
63
64    public override IOperation Apply() {
65      IOperation next = base.Apply();
66     
67      AlbaEncoding solution = VRPToursParameter.ActualValue as AlbaEncoding;
68
69      LambdaInterchangeMove move = LambdaInterchangeMoveParameter.ActualValue;
70      DoubleValue moveQuality = MoveQualityParameter.ActualValue;
71      DoubleValue quality = QualityParameter.ActualValue;
72     
73      //perform move
74      Apply(solution, move);
75
76      quality.Value = moveQuality.Value;
77
78      return next;
79    }
80  }
81}
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