#region License Information /* HeuristicLab * Copyright (C) 2002-2015 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 HeuristicLab.Common; using HeuristicLab.Core; using HeuristicLab.Data; using HeuristicLab.Operators; using HeuristicLab.Parameters; using HeuristicLab.Persistence.Default.CompositeSerializers.Storable; namespace HeuristicLab.Algorithms.ALPS { [Item("ReseedingController", "An operator that controls if reseeding is needed.")] [StorableClass("C7506098-D653-4F9C-8B1E-651287E3B5DB")] public sealed class ReseedingController : SingleSuccessorOperator { public ILookupParameter GenerationsParameter { get { return (ILookupParameter)Parameters["Generations"]; } } public ILookupParameter AgeGapParameter { get { return (ILookupParameter)Parameters["AgeGap"]; } } public OperatorParameter FirstLayerOperatorParameter { get { return (OperatorParameter)Parameters["FirstLayerOperator"]; } } public IOperator FirstLayerOperator { get { return FirstLayerOperatorParameter.Value; } set { FirstLayerOperatorParameter.Value = value; } } [StorableConstructor] private ReseedingController(bool deserializing) : base(deserializing) { } private ReseedingController(ReseedingController original, Cloner cloner) : base(original, cloner) { } public override IDeepCloneable Clone(Cloner cloner) { return new ReseedingController(this, cloner); } public ReseedingController() : base() { Parameters.Add(new LookupParameter("Generations", "The current number of generations.")); Parameters.Add(new ValueLookupParameter("AgeGap", "The frequency of reseeding the lowest layer and scaling factor for the age-limits for the layers.")); Parameters.Add(new OperatorParameter("FirstLayerOperator", "The operator that is performed on the first layer if reseeding is required.")); } public override IOperation Apply() { int generations = GenerationsParameter.ActualValue.Value; int ageGap = AgeGapParameter.ActualValue.Value; var next = new OperationCollection(base.Apply()); if (generations % ageGap == 0) { var layerZeroScope = ExecutionContext.Scope.SubScopes[0]; if (FirstLayerOperator != null) next.Insert(0, ExecutionContext.CreateChildOperation(FirstLayerOperator, layerZeroScope)); } return next; } } }