source: trunk/sources/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/SymbolicDataAnalysisExpressionTreeSimplificationOperator.cs @ 13241

Last change on this file since 13241 was 13241, checked in by gkronber, 6 years ago

#2175: merged all changes from branch to trunk (preserving the original .csproj-files so that I don't have to change reference and output paths)

File size: 2.9 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.Encodings.SymbolicExpressionTreeEncoding;
25using HeuristicLab.Operators;
26using HeuristicLab.Parameters;
27using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
28
29namespace HeuristicLab.Problems.DataAnalysis.Symbolic {
30  [Item("SymbolicExpressionTreeSimplificationOperator", "Simplfies symbolic expression trees encoding a mathematical formula.")]
31  [StorableClass]
32  public class SymbolicDataAnalysisExpressionTreeSimplificationOperator : SingleSuccessorOperator, ISymbolicExpressionTreeOperator {
33    private const string SymbolicExpressionTreeParameterName = "SymbolicExpressionTree";
34
35    public ILookupParameter<ISymbolicExpressionTree> SymbolicExpressionTreeParameter {
36      get { return (ILookupParameter<ISymbolicExpressionTree>)Parameters[SymbolicExpressionTreeParameterName]; }
37    }
38
39    private readonly SymbolicDataAnalysisExpressionTreeSimplifier simplifier = new SymbolicDataAnalysisExpressionTreeSimplifier();
40
41    [StorableConstructor]
42    protected SymbolicDataAnalysisExpressionTreeSimplificationOperator(bool deserializing) : base(deserializing) { }
43    protected SymbolicDataAnalysisExpressionTreeSimplificationOperator(SymbolicDataAnalysisExpressionTreeSimplificationOperator original, Cloner cloner)
44      : base(original, cloner) { }
45    public override IDeepCloneable Clone(Cloner cloner) {
46      return new SymbolicDataAnalysisExpressionTreeSimplificationOperator(this, cloner);
47    }
48
49    public SymbolicDataAnalysisExpressionTreeSimplificationOperator() {
50      Parameters.Add(new LookupParameter<ISymbolicExpressionTree>(SymbolicExpressionTreeParameterName, "The symbolic expression tree to simplify."));
51    }
52
53    public override IOperation Apply() {
54      var tree = SymbolicExpressionTreeParameter.ActualValue;
55      var simplifiedTree = simplifier.Simplify(tree);
56      simplifiedTree = simplifier.Simplify(simplifiedTree);
57      SymbolicExpressionTreeParameter.ActualValue = simplifiedTree;
58
59      return base.Apply();
60    }
61  }
62}
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