#region License Information /* HeuristicLab * Copyright (C) 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; using System.Threading; using HEAL.Attic; using HeuristicLab.Common; using HeuristicLab.Core; using HeuristicLab.Data; using HeuristicLab.Operators; using HeuristicLab.Parameters; namespace HeuristicLab.Optimization { [Item("Single-objective MoveEvaluator", "Evaluates a parameter vector that results from a move.")] [StorableType("EE4B1EBA-50BF-40C7-B338-F4A9D9CC554E")] internal sealed class SingleObjectiveMoveEvaluator : SingleSuccessorOperator, ISingleObjectiveEvaluationOperator, ISingleObjectiveMoveEvaluator, IStochasticOperator, ISingleObjectiveMoveOperator where TEncodedSolution : class, IEncodedSolution { public ILookupParameter RandomParameter { get { return (ILookupParameter)Parameters["Random"]; } } public ILookupParameter> EncodingParameter { get { return (ILookupParameter>)Parameters["Encoding"]; } } public ILookupParameter QualityParameter { get { return (ILookupParameter)Parameters["Quality"]; } } public ILookupParameter MoveQualityParameter { get { return (ILookupParameter)Parameters["MoveQuality"]; } } public Action, IRandom, CancellationToken> Evaluate { get; set; } [StorableConstructor] private SingleObjectiveMoveEvaluator(StorableConstructorFlag _) : base(_) { } private SingleObjectiveMoveEvaluator(SingleObjectiveMoveEvaluator original, Cloner cloner) : base(original, cloner) { } public SingleObjectiveMoveEvaluator() { Parameters.Add(new LookupParameter("Random", "The random number generator to use.")); Parameters.Add(new LookupParameter>("Encoding", "An item that holds the problem's encoding.")); Parameters.Add(new LookupParameter("Quality", "The quality of the parameter vector.")); Parameters.Add(new LookupParameter("MoveQuality", "The quality of the move.")); } public override IDeepCloneable Clone(Cloner cloner) { return new SingleObjectiveMoveEvaluator(this, cloner); } public override IOperation Apply() { var random = RandomParameter.ActualValue; var encoding = EncodingParameter.ActualValue; var solutionContext = ScopeUtil.CreateSolutionContext(ExecutionContext.Scope, encoding); if (!solutionContext.IsEvaluated) Evaluate(solutionContext, random, CancellationToken.None); var qualityValue = solutionContext.EvaluationResult.Quality; MoveQualityParameter.ActualValue = new DoubleValue(qualityValue); ScopeUtil.CopyToScope(ExecutionContext.Scope, solutionContext); return base.Apply(); } } }