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source: branches/2708_ScopedAlgorithms/HeuristicLab.Problems.Knapsack/3.3/MoveEvaluators/KnapsackMoveEvaluator.cs

Last change on this file was 13404, checked in by abeham, 9 years ago

#2521:

  • Adapted Knapsack problem to new problem infrastructure
  • Introduced additional interfaces in binary vector encoding
  • Improved KnapsackImprovementOperator which requires less evaluated solutions in case of an infeasible start solution

Loosely related change:

  • All LookupParameters are now shown by default
  • Wiring code should make sure that wired parameters are hidden
File size: 3.4 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2015 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.BinaryVectorEncoding;
26using HeuristicLab.Operators;
27using HeuristicLab.Parameters;
28using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
29
30namespace HeuristicLab.Problems.Knapsack {
31  /// <summary>
32  /// A base class for operators which evaluate Knapsack moves.
33  /// </summary>
34  [Item("KnapsackMoveEvaluator", "A base class for operators which evaluate Knapsack moves.")]
35  [StorableClass]
36  public abstract class KnapsackMoveEvaluator : SingleSuccessorOperator, IKnapsackMoveEvaluator, IBinaryVectorMoveOperator {
37    public ILookupParameter<DoubleValue> QualityParameter {
38      get { return (ILookupParameter<DoubleValue>)Parameters["Quality"]; }
39    }
40    public ILookupParameter<DoubleValue> MoveQualityParameter {
41      get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
42    }
43    public ILookupParameter<BinaryVector> BinaryVectorParameter {
44      get { return (ILookupParameter<BinaryVector>)Parameters["BinaryVector"]; }
45    }
46    public ILookupParameter<IntValue> KnapsackCapacityParameter {
47      get { return (ILookupParameter<IntValue>)Parameters["KnapsackCapacity"]; }
48    }
49    public ILookupParameter<IntArray> WeightsParameter {
50      get { return (ILookupParameter<IntArray>)Parameters["Weights"]; }
51    }
52    public ILookupParameter<IntArray> ValuesParameter {
53      get { return (ILookupParameter<IntArray>)Parameters["Values"]; }
54    }
55
56    [StorableConstructor]
57    protected KnapsackMoveEvaluator(bool deserializing) : base(deserializing) { }
58    protected KnapsackMoveEvaluator(KnapsackMoveEvaluator original, Cloner cloner) : base(original, cloner) { }
59    protected KnapsackMoveEvaluator()
60      : base() {
61      Parameters.Add(new LookupParameter<DoubleValue>("Quality", "The quality of a Knapsack solution."));
62      Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The evaluated quality of a move on a Knapsack solution."));
63      Parameters.Add(new LookupParameter<BinaryVector>("BinaryVector", "The solution as BinaryVector."));
64      Parameters.Add(new LookupParameter<IntValue>("KnapsackCapacity", "Capacity of the Knapsack."));
65      Parameters.Add(new LookupParameter<IntArray>("Weights", "The weights of the items."));
66      Parameters.Add(new LookupParameter<IntArray>("Values", "The values of the items."));
67      Parameters.Add(new LookupParameter<DoubleValue>("Penalty", "The penalty value for each unit of overweight."));
68    }
69  }
70}
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