source: branches/HeuristicLab.DataAnalysis.Symbolic.LinearInterpreter/HeuristicLab.Encodings.SymbolicExpressionTreeEncoding/3.4/Symbols/GroupSymbol.cs @ 9732

Last change on this file since 9732 was 9732, checked in by bburlacu, 7 years ago

#2021: Merged trunk changes for HeuristicLab.Encodings.SymbolicExpressionTreeEncoding and HeuristicLab.Problems.DataAnalysis.Symbolic. Replaced prefix iteration of nodes in the linear interpretation with breadth iteration for simplified logic and extra performance. Reversed unnecessary changes to other projects.

File size: 2.5 KB
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1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2013 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.Collections.Generic;
23using System.Linq;
24using HeuristicLab.Collections;
25using HeuristicLab.Common;
26using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
27
28namespace HeuristicLab.Encodings.SymbolicExpressionTreeEncoding {
29  [StorableClass]
30  public sealed class GroupSymbol : Symbol {
31    private const int minimumArity = 0;
32    private const int maximumArity = 0;
33
34    public override int MinimumArity {
35      get { return minimumArity; }
36    }
37    public override int MaximumArity {
38      get { return maximumArity; }
39    }
40
41    private ObservableSet<ISymbol> symbols;
42    public IObservableSet<ISymbol> SymbolsCollection {
43      get { return symbols; }
44    }
45    [Storable]
46    public IEnumerable<ISymbol> Symbols {
47      get { return symbols; }
48      private set { symbols = new ObservableSet<ISymbol>(value); }
49    }
50
51    [StorableConstructor]
52    private GroupSymbol(bool deserializing) : base(deserializing) { }
53    private GroupSymbol(GroupSymbol original, Cloner cloner)
54      : base(original, cloner) {
55      symbols = new ObservableSet<ISymbol>(original.Symbols.Select(s => cloner.Clone(s)));
56    }
57    public override IDeepCloneable Clone(Cloner cloner) {
58      return new GroupSymbol(this, cloner);
59    }
60
61    public GroupSymbol() : this("Group Symbol", Enumerable.Empty<ISymbol>()) { }
62    public GroupSymbol(string name, IEnumerable<ISymbol> symbols)
63      : base(name, "A symbol which groups other symbols") {
64      this.symbols = new ObservableSet<ISymbol>(symbols);
65      InitialFrequency = 0.0;
66    }
67
68    public override IEnumerable<ISymbol> Flatten() {
69      return base.Flatten().Union(symbols.SelectMany(s => s.Flatten()));
70    }
71  }
72}
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