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source: trunk/sources/HeuristicLab.RealVector/DiscreteMultiCrossover.cs @ 1161

Last change on this file since 1161 was 111, checked in by abeham, 17 years ago

Renamed Recombination operators to MultCrossover operators and added the necessary base classes (ticket #89)
Created a static Apply method that encapsulates the functionality of the operators (ticket #88)

File size: 1.9 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2008 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 System.Collections.Generic;
24using System.Text;
25using HeuristicLab.Core;
26using HeuristicLab.Data;
27
28namespace HeuristicLab.RealVector {
29  public class DiscreteMultiCrossover : RealVectorMultiCrossoverBase {
30    public override string Description {
31      get {
32        return @"This creates a new offspring by combining the alleles in the parents such that each allele is randomly selected from one parent";
33      }
34    }
35
36    public static double[] Apply(IRandom random, IList<double[]> parents) {
37      int length = parents[0].Length;
38      double[] result = new double[length];
39      try {
40        for (int i = 0; i < length; i++) {
41          result[i] = parents[random.Next(parents.Count)][i];
42        }
43      } catch (IndexOutOfRangeException) {
44        throw new InvalidOperationException("Cannot apply multicrossover to real vectors of different length.");
45      }
46      return result;
47    }
48
49    protected override double[] Cross(IScope scope, IRandom random, IList<double[]> parents) {
50      return Apply(random, parents);
51    }
52  }
53}
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