#region License Information /* HeuristicLab * Copyright (C) 2002-2015 Joseph Helm and 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.Encodings.PackingEncoding; using HeuristicLab.Operators; using HeuristicLab.Optimization; using HeuristicLab.Parameters; using HeuristicLab.Persistence.Default.CompositeSerializers.Storable; namespace HeuristicLab.Problems.BinPacking { [Item("PackingMoveEvaluator", "A base class for operators which evaluate Packing-Solution moves.")] [StorableClass] public abstract class PackingMoveEvaluator : SingleSuccessorOperator, IPackingMoveEvaluator, IMoveOperator where D : class, IPackingDimensions where B : PackingShape where I : PackingShape, IPackingItem { public override bool CanChangeName { get { return false; } } public ILookupParameter QualityParameter { get { return (ILookupParameter)Parameters["Quality"]; } } public ILookupParameter MoveQualityParameter { get { return (ILookupParameter)Parameters["MoveQuality"]; } } public ILookupParameter> PackingItemMeasuresParameter { get { return (LookupParameter>)Parameters["PackingItemMeasures"]; } } public ILookupParameter PackingBinMeasuresParameter { get { return (LookupParameter)Parameters["PackingBinMeasures"]; } } public IValueLookupParameter PackingSolutionDecoderParameter { get { return (IValueLookupParameter)Parameters["PackingSolutionDecoder"]; } } public IValueLookupParameter PackingPlanEvaluatorParameter { get { return (IValueLookupParameter)Parameters["PackingPlanEvaluator"]; } } protected ScopeParameter CurrentScopeParameter { get { return (ScopeParameter)Parameters["CurrentScope"]; } } public ILookupParameter PackingMoveParameter { get { return (ILookupParameter)Parameters["PackingMove"]; } } [StorableConstructor] protected PackingMoveEvaluator(bool deserializing) : base(deserializing) { } protected PackingMoveEvaluator(PackingMoveEvaluator original, Cloner cloner) : base(original, cloner) { } protected PackingMoveEvaluator() : base() { Parameters.Add(new LookupParameter("Quality", "The quality of a packing solution.")); Parameters.Add(new LookupParameter("MoveQuality", "The evaluated quality of a move on a packing solution.")); Parameters.Add(new LookupParameter>("PackingItemMeasures", "Packing-item data taken from the bin-packing problem-instance.")); Parameters.Add(new LookupParameter("PackingBinMeasures", "Packing-bin data taken from the bin-packing problem-instance.")); Parameters.Add(new ValueLookupParameter("PackingSolutionDecoder", "The decoding operator that is used to calculate a packing plan from the used representation.")); Parameters.Add(new ValueLookupParameter("PackingPlanEvaluator", "The actual packing plan evaluation operator.")); Parameters.Add(new ScopeParameter("CurrentScope", "The current scope where the decoded solution should be added to.")); Parameters.Add(new LookupParameter("PackingMove", "The move to evaluate.")); } public override IOperation Apply() { IPackingMove move = PackingMoveParameter.ActualValue; IPackingSolutionEncoding newSolution = move.GetSolutionAfterMove(); CurrentScopeParameter.ActualValue.Variables.Add(new Variable("MovedSolution", newSolution)); PackingPlan packingPlan = (PackingSolutionDecoderParameter.ActualValue as PackingSolutionDecoder). CreatePackingPlanFromEncoding(newSolution, PackingBinMeasuresParameter.ActualValue, PackingItemMeasuresParameter.ActualValue); CurrentScopeParameter.ActualValue.Variables.Add(new Variable("PackingPlanAfterMove", packingPlan)); DoubleValue quality = PackingRatioRegularIdenticalBinEvaluator.CalculatePackingRatio(packingPlan); double moveQuality = quality.Value; if (MoveQualityParameter.ActualValue == null) MoveQualityParameter.ActualValue = new DoubleValue(moveQuality); else MoveQualityParameter.ActualValue.Value = moveQuality; return base.Apply(); } } }