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source: branches/FitnessLandscapeAnalysis/HeuristicLab.Problems.NK/BinaryVectorComparers/MedianBitBinaryVectorComparer.cs @ 12566

Last change on this file since 12566 was 12566, checked in by ascheibe, 9 years ago

#2306

  • removed unused usings
  • renamed plugin.cs file
  • fixed prebuild event
  • fixed plugin dependencies
  • added license headers
  • updated assemblyinfo
File size: 2.1 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 System.Linq;
23using HeuristicLab.Common;
24using HeuristicLab.Core;
25using HeuristicLab.Encodings.BinaryVectorEncoding;
26using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
27
28namespace HeuristicLab.Problems.NK {
29
30  [Item("Median Bit Binary Vector Comparer", "Compares two binary vectors by the median positive bit location")]
31  [StorableClass]
32  public sealed class MedianBitBinaryVectorComparer : BinaryVectorComparer {
33
34    [StorableConstructor]
35    private MedianBitBinaryVectorComparer(bool deserializing) : base(deserializing) { }
36    private MedianBitBinaryVectorComparer(MedianBitBinaryVectorComparer original, Cloner cloner)
37      : base(original, cloner) {
38    }
39    public MedianBitBinaryVectorComparer() { }
40    public override IDeepCloneable Clone(Cloner cloner) {
41      return new MedianBitBinaryVectorComparer(this, cloner);
42    }
43
44    public static int MedianBit(BinaryVector x) {
45      var activeIndices = x.Select((b, i) => new { b, i }).Where(v => v.b).ToList();
46      if (activeIndices.Count > 0)
47        return activeIndices[activeIndices.Count / 2].i;
48      else
49        return 0;
50    }
51    public override int Compare(BinaryVector x, BinaryVector y) {
52      return MedianBit(x) - MedianBit(y);
53    }
54  }
55}
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