1 | #region License Information
|
---|
2 | /* HeuristicLab
|
---|
3 | * Copyright (C) 2002-2016 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 |
|
---|
22 | using System;
|
---|
23 | using System.Collections.Generic;
|
---|
24 | using System.Linq;
|
---|
25 | using HeuristicLab.Common;
|
---|
26 | using HeuristicLab.Core;
|
---|
27 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
|
---|
28 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
|
---|
29 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic {
|
---|
30 | // TODO: handle correctly in all interpreters and formatters
|
---|
31 | // TODO: view for factor variables (configuration of actually allowed factors)
|
---|
32 | // TODO: handle correctly in variable impacts view
|
---|
33 | // TODO: handle correctly in Non-linear regression (infix parser and infix formatter)
|
---|
34 | // TODO: support in all analyzers which handle variable symbols specifically
|
---|
35 | // TODO: handle correctly in gradient views
|
---|
36 | // TODO: handle correctly in ERC view (create linear regression model)
|
---|
37 | // TODO: handle correctly in classification - solution comparison
|
---|
38 | // TODO: allow factor variables in decision trees (and therefore GBT)?
|
---|
39 | // TODO: support in more algs?
|
---|
40 | // TODO: support in more views?
|
---|
41 | [StorableClass]
|
---|
42 | [Item("FactorVariable", "Represents a categorical variable (comparable to factors as in R).")]
|
---|
43 | public class FactorVariable : VariableBase {
|
---|
44 |
|
---|
45 | private Dictionary<string, List<string>> variableValues;
|
---|
46 |
|
---|
47 | [Storable]
|
---|
48 | public IEnumerable<KeyValuePair<string, List<string>>> VariableValues {
|
---|
49 | get { return variableValues; }
|
---|
50 | set {
|
---|
51 | if (value == null) throw new ArgumentNullException();
|
---|
52 | variableValues.Clear();
|
---|
53 | foreach (var kvp in value) {
|
---|
54 | variableValues.Add(kvp.Key, new List<string>(kvp.Value));
|
---|
55 | }
|
---|
56 | }
|
---|
57 | }
|
---|
58 |
|
---|
59 | [StorableConstructor]
|
---|
60 | protected FactorVariable(bool deserializing)
|
---|
61 | : base(deserializing) {
|
---|
62 | variableValues = new Dictionary<string, List<string>>();
|
---|
63 | }
|
---|
64 | protected FactorVariable(FactorVariable original, Cloner cloner)
|
---|
65 | : base(original, cloner) {
|
---|
66 | variableValues =
|
---|
67 | original.variableValues.ToDictionary(kvp => kvp.Key, kvp => new List<string>(kvp.Value));
|
---|
68 | }
|
---|
69 | public FactorVariable() : this("FactorVariable", "Represents a categorical variable (comparable to factors as in R).") { }
|
---|
70 | public FactorVariable(string name, string description)
|
---|
71 | : base(name, description) {
|
---|
72 | variableValues = new Dictionary<string, List<string>>();
|
---|
73 | }
|
---|
74 |
|
---|
75 | public override ISymbolicExpressionTreeNode CreateTreeNode() {
|
---|
76 | return new FactorVariableTreeNode(this);
|
---|
77 | }
|
---|
78 |
|
---|
79 | public override IDeepCloneable Clone(Cloner cloner) {
|
---|
80 | return new FactorVariable(this, cloner);
|
---|
81 | }
|
---|
82 |
|
---|
83 | public IEnumerable<string> GetVariableValues(string variableName) {
|
---|
84 | return variableValues[variableName];
|
---|
85 | }
|
---|
86 | }
|
---|
87 | }
|
---|