source: branches/HeuristicLab.BinPacking/HeuristicLab.Problems.BinPacking/3.3/PackingMoveEvaluator.cs @ 14050

Last change on this file since 14050 was 14050, checked in by gkronber, 3 years ago

#1966: renamed evaluators

File size: 5.2 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2015 Joseph Helm and Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using HeuristicLab.Common;
23using HeuristicLab.Core;
24using HeuristicLab.Data;
25using HeuristicLab.Encodings.PackingEncoding;
26using HeuristicLab.Operators;
27using HeuristicLab.Optimization;
28using HeuristicLab.Parameters;
29using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
30
31namespace HeuristicLab.Problems.BinPacking {
32  [Item("PackingMoveEvaluator", "A base class for operators which evaluate Packing-Solution moves.")]
33  [StorableClass]
34  public abstract class PackingMoveEvaluator<D, B, I> : SingleSuccessorOperator, IPackingMoveEvaluator, IMoveOperator
35    where D : class, IPackingPosition
36    where B : PackingShape<D>
37    where I : PackingShape<D>, IPackingItem {     
38    public override bool CanChangeName {
39      get { return false; }
40    }
41
42    public ILookupParameter<DoubleValue> QualityParameter {
43      get { return (ILookupParameter<DoubleValue>)Parameters["Quality"]; }
44    }
45    public ILookupParameter<DoubleValue> MoveQualityParameter {
46      get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
47    }
48    public ILookupParameter<ItemList<I>> PackingItemMeasuresParameter {
49      get { return (LookupParameter<ItemList<I>>)Parameters["PackingItemMeasures"]; }
50    }
51    public ILookupParameter<B> PackingBinMeasuresParameter {
52      get { return (LookupParameter<B>)Parameters["PackingBinMeasures"]; }
53    }
54    public IValueLookupParameter<IPackingSolutionDecoder> PackingSolutionDecoderParameter {
55      get { return (IValueLookupParameter<IPackingSolutionDecoder>)Parameters["PackingSolutionDecoder"]; }
56    }
57    public IValueLookupParameter<IEvaluator> PackingPlanEvaluatorParameter {
58      get { return (IValueLookupParameter<IEvaluator>)Parameters["PackingPlanEvaluator"]; }
59    }
60    protected ScopeParameter CurrentScopeParameter {
61      get { return (ScopeParameter)Parameters["CurrentScope"]; }
62    }
63    public ILookupParameter<IPackingMove> PackingMoveParameter {
64      get { return (ILookupParameter<IPackingMove>)Parameters["PackingMove"]; }
65    } 
66   
67    [StorableConstructor]
68    protected PackingMoveEvaluator(bool deserializing) : base(deserializing) { }
69    protected PackingMoveEvaluator(PackingMoveEvaluator<D, B, I> original, Cloner cloner) : base(original, cloner) { }
70    protected PackingMoveEvaluator()
71      : base() {
72      Parameters.Add(new LookupParameter<DoubleValue>("Quality", "The quality of a packing solution."));
73      Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The evaluated quality of a move on a packing solution."));
74      Parameters.Add(new LookupParameter<ItemList<I>>("PackingItemMeasures", "Packing-item data taken from the bin-packing problem-instance."));
75      Parameters.Add(new LookupParameter<B>("PackingBinMeasures", "Packing-bin data taken from the bin-packing problem-instance."));
76      Parameters.Add(new ValueLookupParameter<IPackingSolutionDecoder>("PackingSolutionDecoder", "The decoding operator that is used to calculate a packing plan from the used representation."));
77      Parameters.Add(new ValueLookupParameter<IEvaluator>("PackingPlanEvaluator", "The actual packing plan evaluation operator."));
78      Parameters.Add(new ScopeParameter("CurrentScope", "The current scope where the decoded solution should be added to."));
79      Parameters.Add(new LookupParameter<IPackingMove>("PackingMove", "The move to evaluate."));
80    }
81
82
83
84    public override IOperation Apply() {
85      IPackingMove move = PackingMoveParameter.ActualValue;
86      IPackingSolutionEncoding newSolution = move.GetSolutionAfterMove();
87      CurrentScopeParameter.ActualValue.Variables.Add(new Variable("MovedSolution", newSolution));
88
89      PackingPlan<D, B, I> packingPlan = (PackingSolutionDecoderParameter.ActualValue as PackingSolutionDecoder<D, B, I>).
90        CreatePackingPlanFromEncoding(newSolution, PackingBinMeasuresParameter.ActualValue, PackingItemMeasuresParameter.ActualValue);
91
92
93      CurrentScopeParameter.ActualValue.Variables.Add(new Variable("PackingPlanAfterMove", packingPlan));
94
95      DoubleValue quality = PackingRatioEvaluator<D, B, I>.CalculatePackingRatio(packingPlan);
96
97      double moveQuality = quality.Value;
98
99      if (MoveQualityParameter.ActualValue == null) MoveQualityParameter.ActualValue = new DoubleValue(moveQuality);
100      else MoveQualityParameter.ActualValue.Value = moveQuality;
101      return base.Apply();
102    }
103  }
104}
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