| 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2018 Joseph Helm and Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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| 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using HeuristicLab.Common;
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| 23 | using HeuristicLab.Core;
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| 24 | using HeuristicLab.Data;
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| 25 | using HeuristicLab.Operators;
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| 26 | using HeuristicLab.Optimization;
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| 27 | using HeuristicLab.Parameters;
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| 28 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 29 |
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| 30 | namespace HeuristicLab.Problems.BinPacking2D {
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| 31 | [StorableClass]
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| 32 | public abstract class MoveEvaluatorBase<TSol, TMove> : SingleSuccessorOperator,
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| 33 | ISingleObjectiveMoveEvaluator, ISingleObjectiveMoveOperator, IOperator<TSol>
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| 34 | where TSol : class, IItem
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| 35 | where TMove : class, IItem {
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| 36 | public ILookupParameter<TSol> EncodedSolutionParameter {
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| 37 | get { return (ILookupParameter<TSol>)Parameters["EncodedSolution"]; }
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| 38 | }
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| 39 | public ILookupParameter<DoubleValue> QualityParameter {
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| 40 | get { return (ILookupParameter<DoubleValue>)Parameters["Quality"]; }
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| 41 | }
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| 42 | public ILookupParameter<DoubleValue> MoveQualityParameter {
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| 43 | get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
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| 44 | }
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| 45 | public ILookupParameter<ReadOnlyItemList<PackingItem>> ItemsParameter {
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| 46 | get { return (LookupParameter<ReadOnlyItemList<PackingItem>>)Parameters["Items"]; }
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| 47 | }
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| 48 | public ILookupParameter<PackingShape> BinShapeParameter {
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| 49 | get { return (LookupParameter<PackingShape>)Parameters["BinShape"]; }
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| 50 | }
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| 51 | public ILookupParameter<IDecoder<TSol>> DecoderParameter {
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| 52 | get { return (ILookupParameter<IDecoder<TSol>>)Parameters["Decoder"]; }
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| 53 | }
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| 54 | public ILookupParameter<IEvaluator> SolutionEvaluatorParameter {
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| 55 | get { return (ILookupParameter<IEvaluator>)Parameters["SolutionEvaluator"]; }
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| 56 | }
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| 57 | public ILookupParameter<TMove> MoveParameter {
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| 58 | get { return (ILookupParameter<TMove>)Parameters["Move"]; }
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| 59 | }
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| 60 |
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| 61 |
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| 62 | [StorableConstructor]
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| 63 | protected MoveEvaluatorBase(bool deserializing) : base(deserializing) { }
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| 64 | protected MoveEvaluatorBase(MoveEvaluatorBase<TSol, TMove> original, Cloner cloner) : base(original, cloner) { }
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| 65 | protected MoveEvaluatorBase()
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| 66 | : base() {
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| 67 | Parameters.Add(new LookupParameter<TSol>("EncodedSolution", "The encoded solution candidate to evaluate"));
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| 68 | Parameters.Add(new LookupParameter<DoubleValue>("Quality", "The quality of a packing solution."));
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| 69 | Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The evaluated quality of a move on a packing solution."));
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| 70 | Parameters.Add(new LookupParameter<ReadOnlyItemList<PackingItem>>("Items", "Packing-item data taken from the bin-packing problem-instance."));
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| 71 | Parameters.Add(new LookupParameter<PackingShape>("BinShape", "Packing-bin data taken from the bin-packing problem-instance."));
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| 72 | Parameters.Add(new LookupParameter<IDecoder<TSol>>("Decoder", "The decoding operator that is used to calculate a packing plan from the used representation."));
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| 73 | Parameters.Add(new LookupParameter<IEvaluator>("SolutionEvaluator", "The actual packing plan evaluation operator."));
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| 74 | Parameters.Add(new LookupParameter<TMove>("Move", "The move to evaluate."));
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| 75 | }
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| 76 |
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| 77 | public override IOperation Apply() {
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| 78 | var move = MoveParameter.ActualValue;
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| 79 | var encSolCandidate = EncodedSolutionParameter.ActualValue;
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| 80 | var binShape = BinShapeParameter.ActualValue;
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| 81 | var items = ItemsParameter.ActualValue;
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| 82 |
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| 83 |
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| 84 | double moveQuality = EvaluateMove(encSolCandidate, move, binShape, items);
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| 85 |
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| 86 | if (MoveQualityParameter.ActualValue == null)
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| 87 | MoveQualityParameter.ActualValue = new DoubleValue(moveQuality);
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| 88 | else
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| 89 | MoveQualityParameter.ActualValue.Value = moveQuality;
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| 90 | return base.Apply();
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| 91 | }
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| 92 |
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| 93 | public abstract double EvaluateMove(TSol encodedSolutionCandidate, TMove move, PackingShape binShape, ReadOnlyItemList<PackingItem> items);
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| 94 | }
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| 95 | }
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