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source: branches/HeuristicLab.BinPacking/HeuristicLab.Problems.BinPacking/3.3/MoveEvaluators/PackingMoveEvaluator.cs @ 9563

Last change on this file since 9563 was 9563, checked in by jhelm, 11 years ago

#1966: Implemented additional Operator-Wrappers for PackingSequence and GroupingVector; Implemented additional problem-class for Rosenbauer-Problemstatement; Added marker-interfaces for decoder-types;

File size: 5.5 KB
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1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2012 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 System;
23using HeuristicLab.Common;
24using HeuristicLab.Core;
25using HeuristicLab.Data;
26using HeuristicLab.Encodings.PackingEncoding.PackingPlan;
27using HeuristicLab.Operators;
28using HeuristicLab.Optimization;
29using HeuristicLab.Parameters;
30using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
31using HeuristicLab.Problems.BinPacking.Decoders;
32using HeuristicLab.Problems.BinPacking.Evaluators;
33using HeuristicLab.Problems.BinPacking.Interfaces;
34using HeuristicLab.Problems.BinPacking.Shapes;
35
36namespace HeuristicLab.Problems.BinPacking {
37  [Item("PackingMoveEvaluator", "A base class for operators which evaluate Packing-Solution moves.")]
38  [StorableClass]
39  public abstract class PackingMoveEvaluator<D, B, I> : SingleSuccessorOperator, IPackingMoveEvaluator, IMoveOperator
40    where D : class, IPackingDimensions
41    where B : PackingShape<D>, IPackingBin, IRegularPackingShape
42    where I : PackingShape<D>, IPackingItem, IRegularPackingShape {     
43    public override bool CanChangeName {
44      get { return false; }
45    }
46
47    public ILookupParameter<DoubleValue> QualityParameter {
48      get { return (ILookupParameter<DoubleValue>)Parameters["Quality"]; }
49    }
50    public ILookupParameter<DoubleValue> MoveQualityParameter {
51      get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
52    }
53    public ILookupParameter<ItemList<I>> PackingItemMeasuresParameter {
54      get { return (LookupParameter<ItemList<I>>)Parameters["PackingItemMeasures"]; }
55    }
56    public ILookupParameter<B> PackingBinMeasuresParameter {
57      get { return (LookupParameter<B>)Parameters["PackingBinMeasures"]; }
58    }
59    public IValueLookupParameter<IPackingSolutionDecoder> PackingSolutionDecoderParameter {
60      get { return (IValueLookupParameter<IPackingSolutionDecoder>)Parameters["PackingSolutionDecoder"]; }
61    }
62    public IValueLookupParameter<IPackingPlanEvaluator> PackingPlanEvaluatorParameter {
63      get { return (IValueLookupParameter<IPackingPlanEvaluator>)Parameters["PackingPlanEvaluator"]; }
64    }
65    protected ScopeParameter CurrentScopeParameter {
66      get { return (ScopeParameter)Parameters["CurrentScope"]; }
67    }
68    public ILookupParameter<IPackingMove> PackingMoveParameter {
69      get { return (ILookupParameter<IPackingMove>)Parameters["PackingMove"]; }
70    } 
71   
72    [StorableConstructor]
73    protected PackingMoveEvaluator(bool deserializing) : base(deserializing) { }
74    protected PackingMoveEvaluator(PackingMoveEvaluator<D, B, I> original, Cloner cloner) : base(original, cloner) { }
75    protected PackingMoveEvaluator()
76      : base() {
77      Parameters.Add(new LookupParameter<DoubleValue>("Quality", "The quality of a packing solution."));
78      Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The evaluated quality of a move on a packing solution."));
79      Parameters.Add(new LookupParameter<ItemList<I>>("PackingItemMeasures", "Packing-item data taken from the bin-packing problem-instance."));
80      Parameters.Add(new LookupParameter<B>("PackingBinMeasures", "Packing-bin data taken from the bin-packing problem-instance."));
81      Parameters.Add(new ValueLookupParameter<IPackingSolutionDecoder>("PackingSolutionDecoder", "The decoding operator that is used to calculate a packing plan from the used representation."));
82      Parameters.Add(new ValueLookupParameter<IPackingPlanEvaluator>("PackingPlanEvaluator", "The actual packing plan evaluation operator."));
83      Parameters.Add(new ScopeParameter("CurrentScope", "The current scope where the decoded solution should be added to."));
84      Parameters.Add(new LookupParameter<IPackingMove>("PackingMove", "The move to evaluate."));
85    }
86
87
88
89    public override IOperation Apply() {
90      IPackingMove move = PackingMoveParameter.ActualValue;
91      IPackingSolutionEncoding newSolution = move.GetSolutionAfterMove();
92      CurrentScopeParameter.ActualValue.Variables.Add(new Variable("MovedSolution", newSolution));
93
94      PackingPlan<D, B, I> packingPlan = (PackingSolutionDecoderParameter.ActualValue as PackingSolutionDecoder<D, B, I>).
95        CreatePackingPlanFromEncoding(newSolution, PackingBinMeasuresParameter.ActualValue, PackingItemMeasuresParameter.ActualValue);
96
97
98      CurrentScopeParameter.ActualValue.Variables.Add(new Variable("PackingPlanAfterMove", packingPlan));
99
100      DoubleValue quality = PackingRatioRegularIdenticalBinEvaluator<D, B, I>.CalculatePackingRatio(packingPlan);
101
102      double moveQuality = quality.Value;
103
104      if (MoveQualityParameter.ActualValue == null) MoveQualityParameter.ActualValue = new DoubleValue(moveQuality);
105      else MoveQualityParameter.ActualValue.Value = moveQuality;
106      return base.Apply();
107    }
108  }
109}
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