#region License Information /* HeuristicLab * Copyright (C) 2002-2010 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 HeuristicLab.Common; using HeuristicLab.Core; using HeuristicLab.Operators; using HeuristicLab.Persistence.Default.CompositeSerializers.Storable; namespace HeuristicLab.Optimization.Operators { /// /// Operator that migrates the selected sub scopes in each subscope in an unidirectional ring. /// [Item("UnidirectionalRingMigrator", "Migrates the selected sub scopes in each subscope in an unidirectional ring.")] [StorableClass] public class UnidirectionalRingMigrator : SingleSuccessorOperator, IMigrator { [StorableConstructor] protected UnidirectionalRingMigrator(bool deserializing) : base(deserializing) { } protected UnidirectionalRingMigrator(UnidirectionalRingMigrator original, Cloner cloner) : base(original, cloner) { } public UnidirectionalRingMigrator() : base() { } public override IDeepCloneable Clone(Cloner cloner) { return new UnidirectionalRingMigrator(this, cloner); } /// /// Migrates every first sub scope of each child to its left neighbour (like a ring). ///
                                                               
    ///          __ scope __              __ scope __
    ///         /     |     \            /     |     \
    ///       Pop1   Pop2   Pop3  =>   Pop1   Pop2   Pop3
    ///       / \    / \    / \        / \    / \    / \
    ///      R   S  R   S  R   S      R   S  R   S  R   S
    ///     /|\  | /|\  | /|\  |     /|\  | /|\  | /|\  |
    ///     ABC  A DEF  D GHI  G     ABC  G DEF  A GHI  D
    /// 
///
/// The next operation. public override IOperation Apply() { IScope scope = ExecutionContext.Scope; List emigrantsList = new List(); for (int i = 0; i < scope.SubScopes.Count; i++) { IScope emigrants = scope.SubScopes[i].SubScopes[1]; scope.SubScopes[i].SubScopes.Remove(emigrants); emigrantsList.Add(emigrants); } // shift first emigrants to end of list emigrantsList.Add(emigrantsList[0]); emigrantsList.RemoveAt(0); for (int i = 0; i < scope.SubScopes.Count; i++) scope.SubScopes[i].SubScopes.Add(emigrantsList[i]); return base.Apply(); } } }