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source: trunk/sources/HeuristicLab.Problems.VehicleRouting/3.3/VehicleRoutingProblem.cs @ 3938

Last change on this file since 3938 was 3938, checked in by svonolfe, 14 years ago

Added CVRP implementation using the Alba encoding (#1039)
File size: 18.2 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 System.Collections.Generic;
24using System.Linq;
25using System.Text;
26using HeuristicLab.Core;
27using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
28using HeuristicLab.Optimization;
29using HeuristicLab.Parameters;
30using HeuristicLab.Data;
31using HeuristicLab.Common;
32using System.Drawing;
33using HeuristicLab.Problems.VehicleRouting.Encodings.Alba;
34using HeuristicLab.PluginInfrastructure;
35using HeuristicLab.Encodings.PermutationEncoding;
36
37namespace HeuristicLab.Problems.VehicleRouting {
38  [Item("Vehicle Routing Problem", "Represents a Vehicle Routing Problem.")]
39  [Creatable("Problems")]
40  [StorableClass]
41  public sealed class VehicleRoutingProblem : ParameterizedNamedItem, ISingleObjectiveProblem {
42    public override Image ItemImage {
43      get { return HeuristicLab.Common.Resources.VS2008ImageLibrary.Type; }
44    }
45
46    #region Parameter Properties
47    public ValueParameter<BoolValue> MaximizationParameter {
48      get { return (ValueParameter<BoolValue>)Parameters["Maximization"]; }
49    }
50    IParameter ISingleObjectiveProblem.MaximizationParameter {
51      get { return MaximizationParameter; }
52    }
53    public ValueParameter<DoubleMatrix> CoordinatesParameter {
54      get { return (ValueParameter<DoubleMatrix>)Parameters["Coordinates"]; }
55    }
56    public OptionalValueParameter<DoubleMatrix> DistanceMatrixParameter {
57      get { return (OptionalValueParameter<DoubleMatrix>)Parameters["DistanceMatrix"]; }
58    }
59    public ValueParameter<BoolValue> UseDistanceMatrixParameter {
60      get { return (ValueParameter<BoolValue>)Parameters["UseDistanceMatrix"]; }
61    }
62    public ValueParameter<IntValue> VehiclesParameter {
63      get { return (ValueParameter<IntValue>)Parameters["Vehicles"]; }
64    }
65    public ValueParameter<DoubleValue> CapacityParameter {
66      get { return (ValueParameter<DoubleValue>)Parameters["Capacity"]; }
67    }
68    public ValueParameter<DoubleArray> DemandParameter {
69      get { return (ValueParameter<DoubleArray>)Parameters["Demand"]; }
70    }
71    public ValueParameter<DoubleArray> ReadyTimeParameter {
72      get { return (ValueParameter<DoubleArray>)Parameters["ReadyTime"]; }
73    }
74    public ValueParameter<DoubleArray> DueTimeParameter {
75      get { return (ValueParameter<DoubleArray>)Parameters["DueTime"]; }
76    }
77    public ValueParameter<DoubleArray> ServiceTimeParameter {
78      get { return (ValueParameter<DoubleArray>)Parameters["ServiceTime"]; }
79    }
80    ValueParameter<IVRPCreator> SolutionCreatorParameter {
81      get { return (ValueParameter<IVRPCreator>)Parameters["SolutionCreator"]; }
82    }
83    IParameter IProblem.SolutionCreatorParameter {
84      get { return SolutionCreatorParameter; }
85    }
86    ValueParameter<IVRPEvaluator> EvaluatorParameter {
87      get { return (ValueParameter<IVRPEvaluator>)Parameters["Evaluator"]; }
88    }
89    IParameter IProblem.EvaluatorParameter {
90      get { return EvaluatorParameter; }
91    }
92    public OptionalValueParameter<DoubleValue> BestKnownQualityParameter {
93      get { return (OptionalValueParameter<DoubleValue>)Parameters["BestKnownQuality"]; }
94    }
95    IParameter ISingleObjectiveProblem.BestKnownQualityParameter {
96      get { return BestKnownQualityParameter; }
97    }
98    #endregion
99
100    #region Properties
101    public DoubleMatrix Coordinates {
102      get { return CoordinatesParameter.Value; }
103      set { CoordinatesParameter.Value = value; }
104    }
105    public DoubleMatrix DistanceMatrix {
106      get { return DistanceMatrixParameter.Value; }
107      set { DistanceMatrixParameter.Value = value; }
108    }
109    public BoolValue UseDistanceMatrix {
110      get { return UseDistanceMatrixParameter.Value; }
111      set { UseDistanceMatrixParameter.Value = value; }
112    }
113    public IntValue Vehicles {
114      get { return VehiclesParameter.Value; }
115      set { VehiclesParameter.Value = value; }
116    }
117    public DoubleValue Capacity {
118      get { return CapacityParameter.Value; }
119      set { CapacityParameter.Value = value; }
120    }
121    public DoubleArray Demand {
122      get { return DemandParameter.Value; }
123      set { DemandParameter.Value = value; }
124    }
125    public DoubleArray ReadyTime {
126      get { return ReadyTimeParameter.Value; }
127      set { ReadyTimeParameter.Value = value; }
128    }
129    public DoubleArray DueTime {
130      get { return DueTimeParameter.Value; }
131      set { DueTimeParameter.Value = value; }
132    }
133    public DoubleArray ServiceTime {
134      get { return ServiceTimeParameter.Value; }
135      set { ServiceTimeParameter.Value = value; }
136    }
137    public DoubleValue BestKnownQuality {
138      get { return BestKnownQualityParameter.Value; }
139      set { BestKnownQualityParameter.Value = value; }
140    }
141    IVRPCreator SolutionCreator {
142      get { return SolutionCreatorParameter.Value; }
143      set { SolutionCreatorParameter.Value = value; }
144    }
145    ISolutionCreator IProblem.SolutionCreator {
146      get { return SolutionCreatorParameter.Value; }
147    }
148    IVRPEvaluator Evaluator {
149      get { return EvaluatorParameter.Value; }
150      set { EvaluatorParameter.Value = value; }
151    }
152    ISingleObjectiveEvaluator ISingleObjectiveProblem.Evaluator {
153      get { return EvaluatorParameter.Value; }
154    }
155    IEvaluator IProblem.Evaluator {
156      get { return EvaluatorParameter.Value; }
157    }
158    private List<IOperator> operators;
159    public IEnumerable<IOperator> Operators {
160      get { return operators; }
161    }
162    private BestVRPSolutionAnalyzer BestVRPSolutionAnalyzer {
163      get { return operators.OfType<BestVRPSolutionAnalyzer>().FirstOrDefault(); }
164    }
165    #endregion
166
167    public VehicleRoutingProblem()
168      : base() {
169      IVRPCreator creator = new AlbaPermutationCreator();
170      IVRPEvaluator evaluator = new VRPEvaluator();
171
172      Parameters.Add(new ValueParameter<BoolValue>("Maximization", "Set to false as the Vehicle Routing Problem is a minimization problem.", new BoolValue(false)));
173      Parameters.Add(new ValueParameter<DoubleMatrix>("Coordinates", "The x- and y-Coordinates of the cities.", new DoubleMatrix()));
174      Parameters.Add(new OptionalValueParameter<DoubleMatrix>("DistanceMatrix", "The matrix which contains the distances between the cities."));
175      Parameters.Add(new ValueParameter<BoolValue>("UseDistanceMatrix", "True if a distance matrix should be calculated and used for evaluation, otherwise false.", new BoolValue(true)));
176      Parameters.Add(new ValueParameter<IntValue>("Vehicles", "The number of vehicles.", new IntValue(0)));
177      Parameters.Add(new ValueParameter<DoubleValue>("Capacity", "The capacity of each vehicle.", new DoubleValue(0)));
178      Parameters.Add(new ValueParameter<DoubleArray>("Demand", "The demand of each customer.", new DoubleArray()));
179      Parameters.Add(new ValueParameter<DoubleArray>("ReadyTime", "The ready time of each customer.", new DoubleArray()));
180      Parameters.Add(new ValueParameter<DoubleArray>("DueTime", "The due time of each customer.", new DoubleArray()));
181      Parameters.Add(new ValueParameter<DoubleArray>("ServiceTime", "The service time of each customer.", new DoubleArray()));
182      Parameters.Add(new OptionalValueParameter<DoubleValue>("BestKnownQuality", "The quality of the best known solution of this VRP instance."));
183
184      Parameters.Add(new ValueParameter<IVRPCreator>("SolutionCreator", "The operator which should be used to create new VRP solutions.", creator));
185      Parameters.Add(new ValueParameter<IVRPEvaluator>("Evaluator", "The operator which should be used to evaluate VRP solutions.", evaluator));
186
187      creator.VRPSolutionParameter.ActualName = "VRPSolution";
188      evaluator.QualityParameter.ActualName = "VRPQuality";
189      ParameterizeSolutionCreator();
190      ParameterizeEvaluator();
191
192      Initialize();
193    }
194    [StorableConstructor]
195    private VehicleRoutingProblem(bool deserializing) : base() { }
196
197    public override IDeepCloneable Clone(Cloner cloner) {
198      VehicleRoutingProblem clone = (VehicleRoutingProblem)base.Clone(cloner);
199      clone.DistanceMatrixParameter.Value = DistanceMatrixParameter.Value;
200      clone.Initialize();
201      return clone;
202    }
203
204    public void ImportFromSolomon(string solomonFileName) {
205      SolomonParser parser = new SolomonParser(solomonFileName);
206      parser.Parse();
207
208      this.Name = parser.ProblemName;
209
210      Coordinates = new DoubleMatrix(parser.Coordinates);
211      Vehicles.Value = parser.Vehicles;
212      Capacity.Value = parser.Capacity;
213      Demand = new DoubleArray(parser.Demands);
214      ReadyTime = new DoubleArray(parser.Readytimes);
215      DueTime = new DoubleArray(parser.Duetimes);
216      ServiceTime = new DoubleArray(parser.Servicetimes);
217
218      OnReset();
219    }
220
221    #region Events
222    public event EventHandler SolutionCreatorChanged;
223    private void OnSolutionCreatorChanged() {
224      EventHandler handler = SolutionCreatorChanged;
225      if (handler != null) handler(this, EventArgs.Empty);
226    }
227    public event EventHandler EvaluatorChanged;
228    private void OnEvaluatorChanged() {
229      EventHandler handler = EvaluatorChanged;
230      if (handler != null) handler(this, EventArgs.Empty);
231    }
232    public event EventHandler OperatorsChanged;
233    private void OnOperatorsChanged() {
234      EventHandler handler = OperatorsChanged;
235      if (handler != null) handler(this, EventArgs.Empty);
236    }
237    public event EventHandler Reset;
238    private void OnReset() {
239      EventHandler handler = Reset;
240      if (handler != null) handler(this, EventArgs.Empty);
241    }
242    void VehiclesValue_ValueChanged(object sender, EventArgs e) {
243      ParameterizeSolutionCreator();
244    }
245    private void CoordinatesParameter_ValueChanged(object sender, EventArgs e) {
246      Coordinates.ItemChanged += new EventHandler<EventArgs<int, int>>(Coordinates_ItemChanged);
247      Coordinates.Reset += new EventHandler(Coordinates_Reset);
248      ParameterizeSolutionCreator();
249      ClearDistanceMatrix();
250    }
251    private void Coordinates_ItemChanged(object sender, EventArgs<int, int> e) {
252      ClearDistanceMatrix();
253    }
254    private void Coordinates_Reset(object sender, EventArgs e) {
255      ParameterizeSolutionCreator();
256      ClearDistanceMatrix();
257    }
258    private void SolutionCreatorParameter_ValueChanged(object sender, EventArgs e) {
259      ParameterizeSolutionCreator();
260      ParameterizeEvaluator();
261      ParameterizeAnalyzer();
262      ParameterizeOperators();
263      OnSolutionCreatorChanged();
264    }
265    private void SolutionCreator_PermutationParameter_ActualNameChanged(object sender, EventArgs e) {
266      ParameterizeEvaluator();
267      ParameterizeAnalyzer();
268      ParameterizeOperators();
269    }
270    private void EvaluatorParameter_ValueChanged(object sender, EventArgs e) {
271      Evaluator.QualityParameter.ActualNameChanged += new EventHandler(Evaluator_QualityParameter_ActualNameChanged);
272      ParameterizeEvaluator();
273      UpdateMoveEvaluators();
274      ParameterizeAnalyzer();
275      //UpdateDistanceMatrix();
276      OnEvaluatorChanged();
277    }
278    private void Evaluator_QualityParameter_ActualNameChanged(object sender, EventArgs e) {
279      ParameterizeAnalyzer();
280    }
281    void TranslocationMoveParameter_ActualNameChanged(object sender, EventArgs e) {
282      string name = ((ILookupParameter<TranslocationMove>)sender).ActualName;
283      foreach (IPermutationTranslocationMoveOperator op in Operators.OfType<IPermutationTranslocationMoveOperator>()) {
284        op.TranslocationMoveParameter.ActualName = name;
285      }
286    }
287    #endregion
288
289    #region Helpers
290    [StorableHook(HookType.AfterDeserialization)]
291    private void Initialize() {
292      InitializeOperators();
293      CoordinatesParameter.ValueChanged += new EventHandler(CoordinatesParameter_ValueChanged);
294      Vehicles.ValueChanged += new EventHandler(VehiclesValue_ValueChanged);
295      Coordinates.ItemChanged += new EventHandler<EventArgs<int, int>>(Coordinates_ItemChanged);
296      Coordinates.Reset += new EventHandler(Coordinates_Reset);
297      SolutionCreatorParameter.ValueChanged += new EventHandler(SolutionCreatorParameter_ValueChanged);
298      EvaluatorParameter.ValueChanged += new EventHandler(EvaluatorParameter_ValueChanged);
299      Evaluator.QualityParameter.ActualNameChanged += new EventHandler(Evaluator_QualityParameter_ActualNameChanged);
300    }
301    private void InitializeOperators() {
302      operators = new List<IOperator>();
303      operators.Add(new BestVRPSolutionAnalyzer());
304      ParameterizeAnalyzer();
305      operators.AddRange(ApplicationManager.Manager.GetInstances<IVRPOperator>().Cast<IOperator>());
306      ParameterizeOperators();
307      UpdateMoveEvaluators();
308      InitializeMoveGenerators();
309    }
310    private void InitializeMoveGenerators() {
311      foreach (AlbaTranslocationMoveGenerator op in Operators.OfType<AlbaTranslocationMoveGenerator>()) {
312        if (op is IMoveGenerator) {
313          op.TranslocationMoveParameter.ActualNameChanged += new EventHandler(TranslocationMoveParameter_ActualNameChanged);
314        }
315      }
316
317    }
318    private void UpdateMoveEvaluators() {
319      ParameterizeOperators();
320      OnOperatorsChanged();
321    }
322    private void ParameterizeSolutionCreator() {
323      SolutionCreator.CitiesParameter.Value = new IntValue(Coordinates.Rows - 1);
324      SolutionCreator.VehiclesParameter.ActualName = VehiclesParameter.Name;
325      SolutionCreator.CoordinatesParameter.ActualName = CoordinatesParameter.Name;
326      Evaluator.DistanceMatrixParameter.ActualName = DistanceMatrixParameter.Name;
327      Evaluator.UseDistanceMatrixParameter.ActualName = UseDistanceMatrixParameter.Name;
328      SolutionCreator.CapacityParameter.ActualName = CapacityParameter.Name;
329      SolutionCreator.DemandParameter.ActualName = DemandParameter.Name;
330      SolutionCreator.ReadyTimeParameter.ActualName = ReadyTimeParameter.Name;
331      SolutionCreator.DueTimeParameter.ActualName = DueTimeParameter.Name;
332      SolutionCreator.ServiceTimeParameter.ActualName = ServiceTimeParameter.Name;
333    }
334    private void ParameterizeEvaluator() {
335      Evaluator.VRPSolutionParameter.ActualName = SolutionCreator.VRPSolutionParameter.ActualName;
336      Evaluator.CoordinatesParameter.ActualName = CoordinatesParameter.Name;
337      Evaluator.DistanceMatrixParameter.ActualName = DistanceMatrixParameter.Name;
338      Evaluator.UseDistanceMatrixParameter.ActualName = UseDistanceMatrixParameter.Name;
339      Evaluator.VehiclesParameter.ActualName = VehiclesParameter.Name;
340      Evaluator.CapacityParameter.ActualName = CapacityParameter.Name;
341      Evaluator.DemandParameter.ActualName = DemandParameter.Name;
342      Evaluator.ReadyTimeParameter.ActualName = ReadyTimeParameter.Name;
343      Evaluator.DueTimeParameter.ActualName = DueTimeParameter.Name;
344      Evaluator.ServiceTimeParameter.ActualName = ServiceTimeParameter.Name;
345    }
346    private void ParameterizeAnalyzer() {
347      BestVRPSolutionAnalyzer.CoordinatesParameter.ActualName = CoordinatesParameter.Name;
348      BestVRPSolutionAnalyzer.QualityParameter.ActualName = Evaluator.QualityParameter.ActualName;
349      BestVRPSolutionAnalyzer.DistanceParameter.ActualName = Evaluator.DistanceParameter.ActualName;
350      BestVRPSolutionAnalyzer.OverloadParameter.ActualName = Evaluator.OverloadParameter.ActualName;
351      BestVRPSolutionAnalyzer.TardinessParameter.ActualName = Evaluator.TardinessParameter.ActualName;
352      BestVRPSolutionAnalyzer.VRPSolutionParameter.ActualName = SolutionCreator.VRPSolutionParameter.ActualName;
353      BestVRPSolutionAnalyzer.ResultsParameter.ActualName = "Results";
354    }
355    private void ParameterizeOperators() {
356      foreach (IVRPMoveOperator op in Operators.OfType<IVRPMoveOperator>()) {
357        op.VRPSolutionParameter.ActualName = SolutionCreator.VRPSolutionParameter.ActualName;
358      }
359      foreach (IVRPMoveEvaluator op in Operators.OfType<IVRPMoveEvaluator>()) {
360        op.CoordinatesParameter.ActualName = CoordinatesParameter.Name;
361        op.DistanceMatrixParameter.ActualName = DistanceMatrixParameter.Name;
362        op.UseDistanceMatrixParameter.ActualName = UseDistanceMatrixParameter.Name;
363        op.QualityParameter.ActualName = Evaluator.QualityParameter.ActualName;
364        op.VRPSolutionParameter.ActualName = SolutionCreator.VRPSolutionParameter.ActualName;
365        op.VehiclesParameter.ActualName = VehiclesParameter.Name;
366        op.CapacityParameter.ActualName = CapacityParameter.Name;
367        op.DemandParameter.ActualName = DemandParameter.Name;
368        op.ReadyTimeParameter.ActualName = ReadyTimeParameter.Name;
369        op.DueTimeParameter.ActualName = DueTimeParameter.Name;
370        op.ServiceTimeParameter.ActualName = ServiceTimeParameter.Name;
371      }
372      string translocationMove = Operators.OfType<IMoveGenerator>().OfType<IPermutationTranslocationMoveOperator>().First().TranslocationMoveParameter.ActualName;
373      foreach (IPermutationTranslocationMoveOperator op in Operators.OfType<IPermutationTranslocationMoveOperator>())
374        op.TranslocationMoveParameter.ActualName = translocationMove;
375
376      foreach (IVRPCrossover op in Operators.OfType<IVRPCrossover>()) {
377        op.ParentsParameter.ActualName = SolutionCreator.VRPSolutionParameter.ActualName;
378        op.ChildParameter.ActualName = SolutionCreator.VRPSolutionParameter.ActualName;
379      }
380      foreach (IVRPManipulator op in Operators.OfType<IVRPManipulator>()) {
381        op.VRPSolutionParameter.ActualName = SolutionCreator.VRPSolutionParameter.ActualName;
382      }
383    }
384    private void ClearDistanceMatrix() {
385      DistanceMatrixParameter.Value = null;
386    }
387    #endregion
388  }
389}
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