Free cookie consent management tool by TermsFeed Policy Generator

source: stable/HeuristicLab.Tests/HeuristicLab-3.3/Samples/ScatterSearchVRPSampleTest.cs @ 15837

Last change on this file since 15837 was 15584, checked in by swagner, 7 years ago

#2640: Updated year of copyrights in license headers on stable

File size: 3.7 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2018 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.IO;
23using System.Linq;
24using HeuristicLab.Algorithms.ScatterSearch;
25using HeuristicLab.Persistence.Default.Xml;
26using HeuristicLab.Problems.Instances.VehicleRouting;
27using HeuristicLab.Problems.VehicleRouting;
28using Microsoft.VisualStudio.TestTools.UnitTesting;
29
30namespace HeuristicLab.Tests {
31  [TestClass]
32  public class ScatterSearchVRPSampleTest {
33    private const string SampleFileName = "SS_VRP";
34
35    [TestMethod]
36    [TestCategory("Samples.Create")]
37    [TestProperty("Time", "medium")]
38    public void CreateScatterSearchVRPSampleTest() {
39      var ss = CreateScatterSearchVRPSample();
40      string path = Path.Combine(SamplesUtils.SamplesDirectory, SampleFileName + SamplesUtils.SampleFileExtension);
41      XmlGenerator.Serialize(ss, path);
42    }
43
44    [TestMethod]
45    [TestCategory("Samples.Execute")]
46    [TestProperty("Time", "long")]
47    public void RunScatterSearchVRPSampleTest() {
48      var ss = CreateScatterSearchVRPSample();
49      ss.SetSeedRandomly.Value = false;
50      SamplesUtils.RunAlgorithm(ss);
51      Assert.AreEqual(828.93686694283383, SamplesUtils.GetDoubleResult(ss, "BestQuality"));
52      Assert.AreEqual(868.63623986983077, SamplesUtils.GetDoubleResult(ss, "CurrentAverageQuality"));
53      Assert.AreEqual(1048.8333559209832, SamplesUtils.GetDoubleResult(ss, "CurrentWorstQuality"));
54      Assert.AreEqual(262622, SamplesUtils.GetIntResult(ss, "EvaluatedSolutions"));
55    }
56
57    private ScatterSearch CreateScatterSearchVRPSample() {
58      #region Problem Configuration
59      var provider = new SolomonInstanceProvider();
60      var instance = provider.GetDataDescriptors().Single(x => x.Name == "C101");
61      VehicleRoutingProblem vrpProblem = new VehicleRoutingProblem();
62      vrpProblem.Load(provider.LoadData(instance));
63      #endregion
64
65      #region Algorithm Configuration
66      ScatterSearch ss = new ScatterSearch();
67      ss.Engine = new SequentialEngine.SequentialEngine();
68      ss.Name = "Scatter Search - VRP";
69      ss.Description = "A scatter search algorithm which solves the \"C101\" vehicle routing problem (imported from Solomon)";
70      ss.Problem = vrpProblem;
71
72      var improver = ss.Problem.Operators.OfType<VRPIntraRouteImprovementOperator>().First();
73      improver.ImprovementAttemptsParameter.Value.Value = 15;
74      improver.SampleSizeParameter.Value.Value = 10;
75      ss.Improver = improver;
76
77      var pathRelinker = ss.Problem.Operators.OfType<VRPPathRelinker>().First();
78      pathRelinker.IterationsParameter.Value.Value = 25;
79      ss.PathRelinker = pathRelinker;
80
81      var similarityCalculator = ss.SimilarityCalculatorParameter.ValidValues.OfType<VRPSimilarityCalculator>().First();
82      ss.SimilarityCalculator = similarityCalculator;
83
84      ss.MaximumIterations.Value = 2;
85      ss.PopulationSize.Value = 20;
86      ss.ReferenceSetSize.Value = 10;
87      ss.Seed.Value = 0;
88      return ss;
89      #endregion
90    }
91  }
92}
Note: See TracBrowser for help on using the repository browser.