[5624] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[16641] | 3 | * Copyright (C) 2002-2019 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[5624] | 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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[14290] | 22 | using System;
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[5624] | 23 | using System.Collections.Generic;
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| 24 | using HeuristicLab.Common;
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| 25 | using HeuristicLab.Core;
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| 26 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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[16628] | 27 | using HEAL.Attic;
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[5624] | 28 |
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| 29 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic.Regression {
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| 30 | /// <summary>
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| 31 | /// Represents a symbolic regression model
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| 32 | /// </summary>
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[16641] | 33 | [StorableType("2739C33E-4DDB-4285-9DFB-C056D900B2F2")]
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[6555] | 34 | [Item(Name = "Symbolic Regression Model", Description = "Represents a symbolic regression model.")]
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[5624] | 35 | public class SymbolicRegressionModel : SymbolicDataAnalysisModel, ISymbolicRegressionModel {
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[13921] | 36 | [Storable]
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[14290] | 37 | private string targetVariable;
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[13921] | 38 | public string TargetVariable {
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| 39 | get { return targetVariable; }
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[14290] | 40 | set {
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| 41 | if (string.IsNullOrEmpty(value) || targetVariable == value) return;
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| 42 | targetVariable = value;
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| 43 | OnTargetVariableChanged(this, EventArgs.Empty);
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| 44 | }
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[13921] | 45 | }
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[5624] | 46 |
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| 47 | [StorableConstructor]
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[16628] | 48 | protected SymbolicRegressionModel(StorableConstructorFlag _) : base(_) {
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[14289] | 49 | targetVariable = string.Empty;
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| 50 | }
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[9587] | 51 |
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[13941] | 52 | protected SymbolicRegressionModel(SymbolicRegressionModel original, Cloner cloner)
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| 53 | : base(original, cloner) {
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[13921] | 54 | this.targetVariable = original.targetVariable;
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| 55 | }
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[5624] | 56 |
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[13941] | 57 | public SymbolicRegressionModel(string targetVariable, ISymbolicExpressionTree tree,
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[13921] | 58 | ISymbolicDataAnalysisExpressionTreeInterpreter interpreter,
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[13941] | 59 | double lowerEstimationLimit = double.MinValue, double upperEstimationLimit = double.MaxValue)
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[13921] | 60 | : base(tree, interpreter, lowerEstimationLimit, upperEstimationLimit) {
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| 61 | this.targetVariable = targetVariable;
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| 62 | }
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| 63 |
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[5624] | 64 | public override IDeepCloneable Clone(Cloner cloner) {
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| 65 | return new SymbolicRegressionModel(this, cloner);
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| 66 | }
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| 67 |
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[12509] | 68 | public IEnumerable<double> GetEstimatedValues(IDataset dataset, IEnumerable<int> rows) {
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[5720] | 69 | return Interpreter.GetSymbolicExpressionTreeValues(SymbolicExpressionTree, dataset, rows)
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[9587] | 70 | .LimitToRange(LowerEstimationLimit, UpperEstimationLimit);
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[5624] | 71 | }
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[5818] | 72 |
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[6603] | 73 | public ISymbolicRegressionSolution CreateRegressionSolution(IRegressionProblemData problemData) {
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[8528] | 74 | return new SymbolicRegressionSolution(this, new RegressionProblemData(problemData));
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[6603] | 75 | }
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| 76 | IRegressionSolution IRegressionModel.CreateRegressionSolution(IRegressionProblemData problemData) {
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| 77 | return CreateRegressionSolution(problemData);
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| 78 | }
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[8972] | 79 |
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| 80 | public void Scale(IRegressionProblemData problemData) {
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| 81 | Scale(problemData, problemData.TargetVariable);
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| 82 | }
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[14290] | 83 |
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[16243] | 84 | public virtual bool IsProblemDataCompatible(IRegressionProblemData problemData, out string errorMessage) {
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| 85 | return RegressionModel.IsProblemDataCompatible(this, problemData, out errorMessage);
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| 86 | }
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| 87 |
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| 88 | public override bool IsProblemDataCompatible(IDataAnalysisProblemData problemData, out string errorMessage) {
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| 89 | if (problemData == null) throw new ArgumentNullException("problemData", "The provided problemData is null.");
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| 90 | var regressionProblemData = problemData as IRegressionProblemData;
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| 91 | if (regressionProblemData == null)
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| 92 | throw new ArgumentException("The problem data is not a regression problem data. Instead a " + problemData.GetType().GetPrettyName() + " was provided.", "problemData");
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| 93 | return IsProblemDataCompatible(regressionProblemData, out errorMessage);
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| 94 | }
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| 95 |
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[14290] | 96 | #region events
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| 97 | public event EventHandler TargetVariableChanged;
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| 98 | private void OnTargetVariableChanged(object sender, EventArgs args) {
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| 99 | var changed = TargetVariableChanged;
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| 100 | if (changed != null)
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| 101 | changed(sender, args);
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| 102 | }
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| 103 | #endregion
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[5624] | 104 | }
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| 105 | }
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