#region License Information /* HeuristicLab * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL) * * This file is part of HeuristicLab. * * HeuristicLab is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * HeuristicLab is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with HeuristicLab. If not, see . */ #endregion using System.Collections.Generic; using System.Linq; using HeuristicLab.Common; using HeuristicLab.Core; using HeuristicLab.Data; using HeuristicLab.Parameters; using HeuristicLab.Persistence.Default.CompositeSerializers.Storable; using HeuristicLab.Random; namespace HeuristicLab.Encodings.LinearLinkageEncoding { [Item("Exactgroups Linear Linkage Creator", "Creates a random linear linkage LLE encoded solution with a given number of equal-sized groups.")] [StorableClass] public sealed class ExactGroupsLinearLinkageCreator : LinearLinkageCreator { public IValueLookupParameter ExactGroupsParameter { get { return (IValueLookupParameter)Parameters["ExactGroups"]; } } public IntValue ExactGroups { get { return ExactGroupsParameter.Value; } set { ExactGroupsParameter.Value = value; } } [StorableConstructor] private ExactGroupsLinearLinkageCreator(bool deserializing) : base(deserializing) { } private ExactGroupsLinearLinkageCreator(ExactGroupsLinearLinkageCreator original, Cloner cloner) : base(original, cloner) { } public ExactGroupsLinearLinkageCreator() { Parameters.Add(new ValueLookupParameter("ExactGroups", "The exact number of equal-sized groups to create.", new IntValue(3))); } public override IDeepCloneable Clone(Cloner cloner) { return new ExactGroupsLinearLinkageCreator(this, cloner); } public static LinearLinkage Apply(IRandom random, int length, int groups) { var groupNumbers = Enumerable.Range(0, length).Select(x => x % groups).Shuffle(random); var grouping = Enumerable.Range(0, groups).Select(x => new List()).ToList(); var idx = 0; foreach (var g in groupNumbers) grouping[g].Add(idx++); return LinearLinkage.FromGroups(length, grouping); } protected override LinearLinkage Create(IRandom random, int length) { var groups = ExactGroupsParameter.ActualValue.Value; return Apply(random, length, groups); } } }