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source: branches/CEDMA-Exporter-715/sources/HeuristicLab.Selection/3.3/RightChildReducer.cs @ 2319

Last change on this file since 2319 was 1530, checked in by gkronber, 16 years ago

Moved source files of plugins Hive ... Visualization.Test into version-specific sub-folders. #576

File size: 2.9 KB
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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.Operators;
27
28namespace HeuristicLab.Selection {
29  /// <summary>
30  /// Reduces the sub scopes by one level, so that the right sub scope contains also the right child scopes
31  /// of the left sub scope and the left sub scope represents its left child scope.
32  /// <pre>                                                     
33  ///                   scope             scope 
34  ///                   / | \             /   \     
35  ///                  L ... R   =>      A     R                 
36  ///                / | \    \              / /\ \       
37  ///               A ... LR   C             C D E F     
38  ///                     /|\                             
39  ///                    D E F                             
40  /// </pre>
41  /// </summary>
42  public class RightChildReducer : ReducerBase {
43    /// <inheritdoc select="summary"/>
44    public override string Description {
45      get { return @"TODO\r\nOperator description still missing ..."; }
46    }
47
48    /// <summary>
49    /// Reduces the right child of the left sub scope and adds its sub scopes to the right sub scope.
50    /// The left sub scope is also narrowed, which means it represents then its left child.
51    /// </summary>
52    /// <param name="scope">The current scope to reduce.</param>
53    /// <returns>A list of the new reduced sub scopes.</returns>
54    protected override ICollection<IScope> Reduce(IScope scope) {
55      IScope rightChild = scope.SubScopes[scope.SubScopes.Count - 1];
56      IScope leftChild = scope.SubScopes[0];
57      IScope leftRightChild = leftChild.SubScopes[leftChild.SubScopes.Count - 1];
58
59      // merge right children
60      for (int i = 0; i < leftRightChild.SubScopes.Count; i++)
61        rightChild.AddSubScope(leftRightChild.SubScopes[i]);
62
63      leftChild = leftChild.SubScopes[0];
64
65      List<IScope> subScopes = new List<IScope>();
66      subScopes.Add(leftChild);
67      subScopes.Add(rightChild);
68      return subScopes;
69    }
70  }
71}
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