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source: trunk/HeuristicLab.Problems.DataAnalysis/3.4/Implementation/Regression/RegressionModel.cs @ 17982

Last change on this file since 17982 was 17180, checked in by swagner, 5 years ago

#2875: Removed years in copyrights

File size: 4.5 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 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 HEAL.Attic;
27
28namespace HeuristicLab.Problems.DataAnalysis {
29  [StorableType("2998B895-4724-489C-A4CA-9ADD10C7CA49")]
30  [Item("Regression Model", "Base class for all regression models.")]
31  public abstract class RegressionModel : DataAnalysisModel, IRegressionModel {
32    [Storable]
33    private string targetVariable;
34    public string TargetVariable {
35      get { return targetVariable; }
36      set {
37        if (string.IsNullOrEmpty(value) || targetVariable == value) return;
38        targetVariable = value;
39        OnTargetVariableChanged(this, EventArgs.Empty);
40      }
41    }
42
43    [StorableConstructor]
44    protected RegressionModel(StorableConstructorFlag _)
45      : base(_) {
46      targetVariable = string.Empty;
47    }
48
49    protected RegressionModel(RegressionModel original, Cloner cloner)
50      : base(original, cloner) {
51      this.targetVariable = original.targetVariable;
52    }
53
54    protected RegressionModel(string targetVariable)
55      : base("Regression Model") {
56      this.targetVariable = targetVariable;
57    }
58    protected RegressionModel(string targetVariable, string name)
59      : base(name) {
60      this.targetVariable = targetVariable;
61    }
62    protected RegressionModel(string targetVariable, string name, string description)
63      : base(name, description) {
64      this.targetVariable = targetVariable;
65    }
66
67    public abstract IEnumerable<double> GetEstimatedValues(IDataset dataset, IEnumerable<int> rows);
68    public abstract IRegressionSolution CreateRegressionSolution(IRegressionProblemData problemData);
69
70    public virtual bool IsProblemDataCompatible(IRegressionProblemData problemData, out string errorMessage) {
71      return IsProblemDataCompatible(this, problemData, out errorMessage);
72    }
73
74    public override bool IsProblemDataCompatible(IDataAnalysisProblemData problemData, out string errorMessage) {
75      if (problemData == null) throw new ArgumentNullException("problemData", "The provided problemData is null.");
76      var regressionProblemData = problemData as IRegressionProblemData;
77      if (regressionProblemData == null)
78        throw new ArgumentException("The problem data is not compatible with this regression model. Instead a " + problemData.GetType().GetPrettyName() + " was provided.", "problemData");
79      return IsProblemDataCompatible(regressionProblemData, out errorMessage);
80    }
81
82    public static bool IsProblemDataCompatible(IRegressionModel model, IRegressionProblemData problemData, out string errorMessage) {
83      if (model == null) throw new ArgumentNullException("model", "The provided model is null.");
84      if (problemData == null) throw new ArgumentNullException("problemData", "The provided problemData is null.");
85      errorMessage = string.Empty;
86
87      if (model.TargetVariable != problemData.TargetVariable)
88        errorMessage = string.Format("The target variable of the model {0} does not match the target variable of the problemData {1}.", model.TargetVariable, problemData.TargetVariable);
89
90      var evaluationErrorMessage = string.Empty;
91      var datasetCompatible = model.IsDatasetCompatible(problemData.Dataset, out evaluationErrorMessage);
92      if (!datasetCompatible)
93        errorMessage += evaluationErrorMessage;
94
95      return string.IsNullOrEmpty(errorMessage);
96    }
97
98    #region events
99    public event EventHandler TargetVariableChanged;
100    private void OnTargetVariableChanged(object sender, EventArgs args) {
101      var changed = TargetVariableChanged;
102      if (changed != null)
103        changed(sender, args);
104    }
105    #endregion
106  }
107}
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