[5624] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[15973] | 3 | * Copyright (C) 2002-2018 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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[15973] | 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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| 27 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 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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| 33 | [StorableClass]
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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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[15973] | 36 | [Storable]
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| 37 | private string targetVariable;
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| 38 | public string TargetVariable {
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| 39 | get { return targetVariable; }
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| 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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| 45 | }
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[5624] | 46 |
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| 47 | [StorableConstructor]
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[15973] | 48 | protected SymbolicRegressionModel(bool deserializing)
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| 49 | : base(deserializing) {
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| 50 | targetVariable = string.Empty;
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| 51 | }
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[9587] | 52 |
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[15973] | 53 | protected SymbolicRegressionModel(SymbolicRegressionModel original, Cloner cloner)
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| 54 | : base(original, cloner) {
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| 55 | this.targetVariable = original.targetVariable;
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| 56 | }
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| 57 |
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| 58 | public SymbolicRegressionModel(string targetVariable, ISymbolicExpressionTree tree,
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| 59 | ISymbolicDataAnalysisExpressionTreeInterpreter interpreter,
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[5720] | 60 | double lowerEstimationLimit = double.MinValue, double upperEstimationLimit = double.MaxValue)
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[15973] | 61 | : base(tree, interpreter, lowerEstimationLimit, upperEstimationLimit) {
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| 62 | this.targetVariable = targetVariable;
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| 63 | }
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[5624] | 64 |
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| 65 | public override IDeepCloneable Clone(Cloner cloner) {
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| 66 | return new SymbolicRegressionModel(this, cloner);
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| 67 | }
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| 68 |
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[12509] | 69 | public IEnumerable<double> GetEstimatedValues(IDataset dataset, IEnumerable<int> rows) {
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[5720] | 70 | return Interpreter.GetSymbolicExpressionTreeValues(SymbolicExpressionTree, dataset, rows)
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[9587] | 71 | .LimitToRange(LowerEstimationLimit, UpperEstimationLimit);
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[5624] | 72 | }
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[5818] | 73 |
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[6603] | 74 | public ISymbolicRegressionSolution CreateRegressionSolution(IRegressionProblemData problemData) {
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[8528] | 75 | return new SymbolicRegressionSolution(this, new RegressionProblemData(problemData));
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[6603] | 76 | }
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| 77 | IRegressionSolution IRegressionModel.CreateRegressionSolution(IRegressionProblemData problemData) {
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| 78 | return CreateRegressionSolution(problemData);
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| 79 | }
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[8972] | 80 |
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| 81 | public void Scale(IRegressionProblemData problemData) {
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| 82 | Scale(problemData, problemData.TargetVariable);
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| 83 | }
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[15973] | 84 |
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| 85 | #region events
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| 86 | public event EventHandler TargetVariableChanged;
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| 87 | private void OnTargetVariableChanged(object sender, EventArgs args) {
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| 88 | var changed = TargetVariableChanged;
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| 89 | if (changed != null)
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| 90 | changed(sender, args);
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| 91 | }
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| 92 | #endregion
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[5624] | 93 | }
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| 94 | }
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