source: branches/2971_named_intervals/HeuristicLab.Problems.DataAnalysis.Symbolic.Regression/3.4/SymbolicRegressionModel.cs @ 16641

Last change on this file since 16641 was 16641, checked in by gkronber, 4 months ago

#2971: merged r16527:16625 from trunk/HeuristicLab.Problems.DataAnalysis.Symbolic.Regression to branch/HeuristicLab.Problems.DataAnalysis.Symbolic.Regression (resolving all conflicts)

File size: 4.4 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2019 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 HeuristicLab.Common;
25using HeuristicLab.Core;
26using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
27using HEAL.Attic;
28using HEAL.Attic;
29
30namespace HeuristicLab.Problems.DataAnalysis.Symbolic.Regression {
31  /// <summary>
32  /// Represents a symbolic regression model
33  /// </summary>
34  [StorableType("2739C33E-4DDB-4285-9DFB-C056D900B2F2")]
35  [Item(Name = "Symbolic Regression Model", Description = "Represents a symbolic regression model.")]
36  public class SymbolicRegressionModel : SymbolicDataAnalysisModel, ISymbolicRegressionModel {
37    [Storable]
38    private string targetVariable;
39    public string TargetVariable {
40      get { return targetVariable; }
41      set {
42        if (string.IsNullOrEmpty(value) || targetVariable == value) return;
43        targetVariable = value;
44        OnTargetVariableChanged(this, EventArgs.Empty);
45      }
46    }
47
48    [StorableConstructor]
49    protected SymbolicRegressionModel(StorableConstructorFlag _) : base(_) {
50      targetVariable = string.Empty;
51    }
52
53    protected SymbolicRegressionModel(SymbolicRegressionModel original, Cloner cloner)
54      : base(original, cloner) {
55      this.targetVariable = original.targetVariable;
56    }
57
58    public SymbolicRegressionModel(string targetVariable, ISymbolicExpressionTree tree,
59      ISymbolicDataAnalysisExpressionTreeInterpreter interpreter,
60      double lowerEstimationLimit = double.MinValue, double upperEstimationLimit = double.MaxValue)
61      : base(tree, interpreter, lowerEstimationLimit, upperEstimationLimit) {
62      this.targetVariable = targetVariable;
63    }
64
65    public override IDeepCloneable Clone(Cloner cloner) {
66      return new SymbolicRegressionModel(this, cloner);
67    }
68
69    public IEnumerable<double> GetEstimatedValues(IDataset dataset, IEnumerable<int> rows) {
70      return Interpreter.GetSymbolicExpressionTreeValues(SymbolicExpressionTree, dataset, rows)
71        .LimitToRange(LowerEstimationLimit, UpperEstimationLimit);
72    }
73
74    public ISymbolicRegressionSolution CreateRegressionSolution(IRegressionProblemData problemData) {
75      return new SymbolicRegressionSolution(this, new RegressionProblemData(problemData));
76    }
77    IRegressionSolution IRegressionModel.CreateRegressionSolution(IRegressionProblemData problemData) {
78      return CreateRegressionSolution(problemData);
79    }
80
81    public void Scale(IRegressionProblemData problemData) {
82      Scale(problemData, problemData.TargetVariable);
83    }
84
85    public virtual bool IsProblemDataCompatible(IRegressionProblemData problemData, out string errorMessage) {
86      return RegressionModel.IsProblemDataCompatible(this, problemData, out errorMessage);
87    }
88
89    public override bool IsProblemDataCompatible(IDataAnalysisProblemData problemData, out string errorMessage) {
90      if (problemData == null) throw new ArgumentNullException("problemData", "The provided problemData is null.");
91      var regressionProblemData = problemData as IRegressionProblemData;
92      if (regressionProblemData == null)
93        throw new ArgumentException("The problem data is not a regression problem data. Instead a " + problemData.GetType().GetPrettyName() + " was provided.", "problemData");
94      return IsProblemDataCompatible(regressionProblemData, out errorMessage);
95    }
96
97    #region events
98    public event EventHandler TargetVariableChanged;
99    private void OnTargetVariableChanged(object sender, EventArgs args) {
100      var changed = TargetVariableChanged;
101      if (changed != null)
102        changed(sender, args);
103    }
104    #endregion
105  }
106}
Note: See TracBrowser for help on using the repository browser.