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source: branches/VRP/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/Alba/Moves/LambdaInterchange/AlbaLambdaInterchangeMoveGenerator.cs @ 4370

Last change on this file since 4370 was 4370, checked in by svonolfe, 14 years ago

Added move operators (WIP) (#1177)

File size: 3.7 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 System;
23using HeuristicLab.Core;
24using HeuristicLab.Optimization;
25using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
26using HeuristicLab.Problems.VehicleRouting.Encodings.Alba;
27using HeuristicLab.Parameters;
28using System.Collections.Generic;
29using HeuristicLab.Data;
30using HeuristicLab.Problems.VehicleRouting.Interfaces;
31
32namespace HeuristicLab.Problems.VehicleRouting.Encodings.Alba {
33  [Item("AlbaLambdaInterchangeMoveGenerator", "Generates lambda interchange moves from a given VRP encoding.  It is implemented as described in Alba, E. and Dorronsoro, B. (2004). Solving the Vehicle Routing Problem by Using Cellular Genetic Algorithms.")]
34  [StorableClass]
35  public abstract class AlbaLambdaInterchangeMoveGenerator : AlbaMoveGenerator, IExhaustiveMoveGenerator, IAlbaLambdaInterchangeMoveOperator {
36    #region IAlbaLambdaInterchangeMoveOperator Members
37
38    public ILookupParameter<AlbaLambdaInterchangeMove> LambdaInterchangeMoveParameter {
39      get { return (ILookupParameter<AlbaLambdaInterchangeMove>)Parameters["AlbaLambdaInterchangeMove"]; }
40    }
41
42    public override ILookupParameter VRPMoveParameter {
43      get { return LambdaInterchangeMoveParameter; }
44    }
45
46    protected ScopeParameter CurrentScopeParameter {
47      get { return (ScopeParameter)Parameters["CurrentScope"]; }
48    }
49
50    public IValueParameter<IntValue> LambdaParameter {
51      get { return (IValueParameter<IntValue>)Parameters["Lambda"]; }
52    }
53
54    #endregion
55
56    [StorableConstructor]
57    protected AlbaLambdaInterchangeMoveGenerator(bool deserializing) : base(deserializing) { }
58
59    public AlbaLambdaInterchangeMoveGenerator()
60      : base() {
61        Parameters.Add(new LookupParameter<AlbaLambdaInterchangeMove>("AlbaLambdaInterchangeMove", "The moves that should be generated in subscopes."));
62        Parameters.Add(new ScopeParameter("CurrentScope", "The current scope where the moves should be added as subscopes."));
63        Parameters.Add(new ValueParameter<IntValue>("Lambda", "The lambda value.", new IntValue(1)));
64    }
65
66    protected abstract AlbaLambdaInterchangeMove[] GenerateMoves(AlbaEncoding individual, IVRPProblemInstance problemInstance, int lambda);
67
68    public override IOperation Apply() {
69      IOperation next = base.Apply();
70
71      AlbaEncoding individual = VRPToursParameter.ActualValue as AlbaEncoding;
72      AlbaLambdaInterchangeMove[] moves = GenerateMoves(individual, ProblemInstanceParameter.ActualValue, LambdaParameter.Value.Value);
73      Scope[] moveScopes = new Scope[moves.Length];
74      for (int i = 0; i < moveScopes.Length; i++) {
75        moveScopes[i] = new Scope(i.ToString());
76        moveScopes[i].Variables.Add(new Variable(LambdaInterchangeMoveParameter.ActualName, moves[i]));
77      }
78      CurrentScopeParameter.ActualValue.SubScopes.AddRange(moveScopes);
79
80      return next;
81    }
82  }
83}
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