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source: trunk/sources/HeuristicLab.Problems.DataAnalysis/3.4/Implementation/Regression/ConstantRegressionModel.cs @ 13100

Last change on this file since 13100 was 13100, checked in by gkronber, 7 years ago

#1998: merged changes from the branch to trunk (btw. this branch was difficult to merge back to trunk because of it's specific structure)

File size: 3.2 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 System;
23using System.Collections.Generic;
24using System.Linq;
25using HeuristicLab.Common;
26using HeuristicLab.Core;
27using HeuristicLab.Data;
28using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
29
30namespace HeuristicLab.Problems.DataAnalysis {
31  [StorableClass]
32  [Item("Constant Regression Model", "A model that always returns the same constant value regardless of the presented input data.")]
33  [Obsolete]
34  public class ConstantRegressionModel : NamedItem, IRegressionModel, IStringConvertibleValue {
35    [Storable]
36    private double constant;
37    public double Constant {
38      get { return constant; }
39      // setter not implemented because manipulation of the constant is not allowed
40    }
41
42    [StorableConstructor]
43    protected ConstantRegressionModel(bool deserializing) : base(deserializing) { }
44    protected ConstantRegressionModel(ConstantRegressionModel original, Cloner cloner)
45      : base(original, cloner) {
46      this.constant = original.constant;
47    }
48    public override IDeepCloneable Clone(Cloner cloner) { return new ConstantRegressionModel(this, cloner); }
49
50    public ConstantRegressionModel(double constant)
51      : base() {
52      this.name = ItemName;
53      this.description = ItemDescription;
54      this.constant = constant;
55      this.ReadOnly = true; // changing a constant regression model is not supported
56    }
57
58    public IEnumerable<double> GetEstimatedValues(IDataset dataset, IEnumerable<int> rows) {
59      return rows.Select(row => Constant);
60    }
61
62    public IRegressionSolution CreateRegressionSolution(IRegressionProblemData problemData) {
63      return new ConstantRegressionSolution(new ConstantModel(constant), new RegressionProblemData(problemData));
64    }
65
66    public override string ToString() {
67      return string.Format("Constant: {0}", GetValue());
68    }
69
70    #region IStringConvertibleValue
71    public bool ReadOnly { get; private set; }
72    public bool Validate(string value, out string errorMessage) {
73      throw new NotSupportedException(); // changing a constant regression model is not supported
74    }
75
76    public string GetValue() {
77      return string.Format("{0:E4}", constant);
78    }
79
80    public bool SetValue(string value) {
81      throw new NotSupportedException(); // changing a constant regression model is not supported
82    }
83
84    public event EventHandler ValueChanged;
85    #endregion
86  }
87}
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