[7043] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[16565] | 3 | * Copyright (C) 2002-2019 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[7043] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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[13001] | 22 | using System;
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[7043] | 23 | using System.Collections.Generic;
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| 24 | using System.Linq;
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| 25 | using HeuristicLab.Common;
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| 26 | using HeuristicLab.Core;
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[13001] | 27 | using HeuristicLab.Data;
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[16565] | 28 | using HEAL.Attic;
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[7043] | 29 |
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| 30 | namespace HeuristicLab.Problems.DataAnalysis {
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[16565] | 31 | [StorableType("E4C0D707-F668-428F-951C-F82A475177BE")]
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[7043] | 32 | [Item("Constant Regression Model", "A model that always returns the same constant value regardless of the presented input data.")]
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[13100] | 33 | [Obsolete]
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[13941] | 34 | public class ConstantRegressionModel : RegressionModel, IStringConvertibleValue {
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| 35 | public override IEnumerable<string> VariablesUsedForPrediction { get { return Enumerable.Empty<string>(); } }
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[13921] | 36 |
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[7043] | 37 | [Storable]
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[13001] | 38 | private double constant;
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[7043] | 39 | public double Constant {
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| 40 | get { return constant; }
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[13001] | 41 | // setter not implemented because manipulation of the constant is not allowed
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[7043] | 42 | }
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| 43 |
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| 44 | [StorableConstructor]
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[16565] | 45 | protected ConstantRegressionModel(StorableConstructorFlag _) : base(_) { }
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[7043] | 46 | protected ConstantRegressionModel(ConstantRegressionModel original, Cloner cloner)
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| 47 | : base(original, cloner) {
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| 48 | this.constant = original.constant;
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| 49 | }
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[13921] | 50 |
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[7043] | 51 | public override IDeepCloneable Clone(Cloner cloner) { return new ConstantRegressionModel(this, cloner); }
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| 52 |
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[14000] | 53 | public ConstantRegressionModel(double constant, string targetVariable)
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[13941] | 54 | : base(targetVariable) {
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[7043] | 55 | this.name = ItemName;
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| 56 | this.description = ItemDescription;
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| 57 | this.constant = constant;
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[13001] | 58 | this.ReadOnly = true; // changing a constant regression model is not supported
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[7043] | 59 | }
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| 60 |
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[13941] | 61 | public override IEnumerable<double> GetEstimatedValues(IDataset dataset, IEnumerable<int> rows) {
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[7043] | 62 | return rows.Select(row => Constant);
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| 63 | }
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| 64 |
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[13941] | 65 | public override IRegressionSolution CreateRegressionSolution(IRegressionProblemData problemData) {
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[13992] | 66 | return new ConstantRegressionSolution(new ConstantModel(constant, TargetVariable), new RegressionProblemData(problemData));
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[7043] | 67 | }
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[13001] | 68 |
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| 69 | public override string ToString() {
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| 70 | return string.Format("Constant: {0}", GetValue());
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| 71 | }
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| 72 |
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| 73 | #region IStringConvertibleValue
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| 74 | public bool ReadOnly { get; private set; }
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| 75 | public bool Validate(string value, out string errorMessage) {
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| 76 | throw new NotSupportedException(); // changing a constant regression model is not supported
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| 77 | }
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| 78 |
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| 79 | public string GetValue() {
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| 80 | return string.Format("{0:E4}", constant);
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| 81 | }
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| 82 |
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| 83 | public bool SetValue(string value) {
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| 84 | throw new NotSupportedException(); // changing a constant regression model is not supported
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| 85 | }
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| 86 |
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[14140] | 87 | #pragma warning disable 0067
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[13001] | 88 | public event EventHandler ValueChanged;
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[14140] | 89 | #pragma warning restore 0067
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[13001] | 90 | #endregion
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[7043] | 91 | }
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| 92 | }
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