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source: trunk/sources/HeuristicLab.Encodings.SymbolicExpressionTreeEncoding/3.3/Manipulators/FullTreeShaker.cs @ 4047

Last change on this file since 4047 was 3512, checked in by gkronber, 15 years ago

Implemented manipulation operators. #937 (Data types and operators for symbolic expression tree encoding)

File size: 1.8 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 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.Core;
24using HeuristicLab.Operators;
25using HeuristicLab.Random;
26using HeuristicLab.Data;
27using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
28
29namespace HeuristicLab.Encodings.SymbolicExpressionTreeEncoding.Manipulators {
30  [StorableClass]
31  [Item("FullTreeShaker", "Manipulates all nodes that have local parameters.")]
32  public class FullTreeShaker : SymbolicExpressionTreeManipulator {
33
34    public FullTreeShaker()
35      : base() {
36    }
37
38    protected override void Manipulate(IRandom random, SymbolicExpressionTree symbolicExpressionTree, ISymbolicExpressionGrammar grammar, IntValue maxTreeSize, IntValue maxTreeHeight, out bool success) {
39      foreach (var node in symbolicExpressionTree.IterateNodesPrefix()) {
40        if (node.HasLocalParameters) {
41          node.ShakeLocalParameters(random, 1.0);
42        }
43      }
44      success = true;
45    }
46  }
47}
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