[11450] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[14186] | 3 | * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[11450] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System.IO;
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| 23 | using HeuristicLab.Algorithms.GeneticAlgorithm;
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[12743] | 24 | using HeuristicLab.Encodings.LinearLinkageEncoding;
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[11450] | 25 | using HeuristicLab.Persistence.Default.Xml;
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[12743] | 26 | using HeuristicLab.Problems.Programmable;
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[11450] | 27 | using HeuristicLab.Selection;
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| 28 | using Microsoft.VisualStudio.TestTools.UnitTesting;
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| 29 |
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| 30 | namespace HeuristicLab.Tests {
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| 31 | [TestClass]
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[12743] | 32 | public class GAGroupingProblemSampleTest {
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| 33 | private const string SampleFileName = "GA_Grouping";
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| 34 | #region Code
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| 35 | private const string ProblemCode = @"
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| 36 | using System;
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| 37 | using System.Linq;
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| 38 | using System.Collections.Generic;
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| 39 | using HeuristicLab.Common;
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| 40 | using HeuristicLab.Core;
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| 41 | using HeuristicLab.Data;
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| 42 | using HeuristicLab.Encodings.LinearLinkageEncoding;
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| 43 | using HeuristicLab.Optimization;
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| 44 | using HeuristicLab.Problems.Programmable;
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[11450] | 45 |
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[12743] | 46 | namespace HeuristicLab.Problems.Programmable {
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| 47 | public class CompiledSingleObjectiveProblemDefinition : CompiledProblemDefinition, ISingleObjectiveProblemDefinition {
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| 48 | private const int ProblemSize = 100;
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| 49 | public bool Maximization { get { return false; } }
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| 50 |
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| 51 | private bool[,] allowedTogether;
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| 52 |
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| 53 | public override void Initialize() {
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| 54 | var encoding = new LinearLinkageEncoding(""lle"", length: ProblemSize);
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| 55 | allowedTogether = new bool[encoding.Length, encoding.Length];
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| 56 | var random = new System.Random(13);
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| 57 | for (var i = 0; i < encoding.Length - 1; i++)
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| 58 | for (var j = i + 1; j < encoding.Length; j++)
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| 59 | allowedTogether[i, j] = allowedTogether[j, i] = random.Next(2) == 0;
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| 60 |
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| 61 | Encoding = encoding;
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| 62 | }
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| 63 |
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| 64 | public double Evaluate(Individual individual, IRandom random) {
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| 65 | var penalty = 0;
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| 66 | var groups = individual.LinearLinkage(""lle"").GetGroups().ToList();
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| 67 | for (var i = 0; i < groups.Count; i++) {
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| 68 | for (var j = 0; j < groups[i].Count; j++)
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| 69 | for (var k = j + 1; k < groups[i].Count; k++)
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| 70 | if (!allowedTogether[groups[i][j], groups[i][k]]) penalty++;
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| 71 | }
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| 72 | if (penalty > 0) return penalty + ProblemSize;
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| 73 | else return groups.Count;
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| 74 | }
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| 75 |
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| 76 | public void Analyze(Individual[] individuals, double[] qualities, ResultCollection results, IRandom random) { }
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| 77 |
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| 78 | public IEnumerable<Individual> GetNeighbors(Individual individual, IRandom random) {
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| 79 | foreach (var move in ExhaustiveSwap2MoveGenerator.Generate(individual.LinearLinkage(""lle""))) {
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| 80 | var neighbor = individual.Copy();
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| 81 | var lle = neighbor.LinearLinkage(""lle"");
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| 82 | Swap2MoveMaker.Apply(lle, move);
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| 83 | yield return neighbor;
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| 84 | }
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| 85 | }
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| 86 | }
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| 87 | }
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| 88 | ";
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| 89 | #endregion
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| 90 |
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[11450] | 91 | [TestMethod]
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| 92 | [TestCategory("Samples.Create")]
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| 93 | [TestProperty("Time", "medium")]
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[12743] | 94 | public void CreateGaGroupingProblemSampleTest() {
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| 95 | var ga = CreateGaGroupingProblemSample();
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[11514] | 96 | string path = Path.Combine(SamplesUtils.SamplesDirectory, SampleFileName + SamplesUtils.SampleFileExtension);
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| 97 | XmlGenerator.Serialize(ga, path);
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[11450] | 98 | }
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[11514] | 99 |
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[11450] | 100 | [TestMethod]
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| 101 | [TestCategory("Samples.Execute")]
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| 102 | [TestProperty("Time", "long")]
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[12743] | 103 | public void RunGaGroupingProblemSampleTest() {
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| 104 | var ga = CreateGaGroupingProblemSample();
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[11450] | 105 | ga.SetSeedRandomly.Value = false;
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| 106 | SamplesUtils.RunAlgorithm(ga);
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[12743] | 107 | Assert.AreEqual(26, SamplesUtils.GetDoubleResult(ga, "BestQuality"));
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| 108 | Assert.AreEqual(27.58, SamplesUtils.GetDoubleResult(ga, "CurrentAverageQuality"));
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| 109 | Assert.AreEqual(105, SamplesUtils.GetDoubleResult(ga, "CurrentWorstQuality"));
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[11450] | 110 | Assert.AreEqual(99100, SamplesUtils.GetIntResult(ga, "EvaluatedSolutions"));
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| 111 | }
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| 112 |
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[12743] | 113 | private GeneticAlgorithm CreateGaGroupingProblemSample() {
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[11450] | 114 | GeneticAlgorithm ga = new GeneticAlgorithm();
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[11514] | 115 |
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[11450] | 116 | #region Problem Configuration
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[12743] | 117 | var problem = new SingleObjectiveProgrammableProblem() {
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| 118 | ProblemScript = { Code = ProblemCode }
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| 119 | };
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| 120 | problem.ProblemScript.Compile();
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[11450] | 121 | #endregion
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| 122 | #region Algorithm Configuration
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[12743] | 123 | ga.Name = "Genetic Algorithm - Grouping Problem";
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| 124 | ga.Description = "A genetic algorithm which solves a grouping problem using the linear linkage encoding.";
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| 125 | ga.Problem = problem;
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| 126 | SamplesUtils.ConfigureGeneticAlgorithmParameters<TournamentSelector, MultiLinearLinkageCrossover, MultiLinearLinkageManipulator>(
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| 127 | ga, 100, 1, 1000, 0.05, 2);
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[11450] | 128 | #endregion
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[11514] | 129 |
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[11450] | 130 | return ga;
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| 131 | }
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| 132 | }
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| 133 | }
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