[8409] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[15583] | 3 | * Copyright (C) 2002-2018 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[8409] | 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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| 22 | using System.Collections.Generic;
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[8935] | 23 | using HeuristicLab.Common;
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[10469] | 24 | using HeuristicLab.Core;
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| 25 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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[8409] | 26 |
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| 27 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic.Regression {
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[10469] | 28 | [StorableClass]
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| 29 | [Item("SymbolicRegressionSolutionImpactValuesCalculator", "Calculate symbolic expression tree node impact values for regression problems.")]
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[8409] | 30 | public class SymbolicRegressionSolutionImpactValuesCalculator : SymbolicDataAnalysisSolutionImpactValuesCalculator {
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[10469] | 31 | public SymbolicRegressionSolutionImpactValuesCalculator() { }
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| 32 | protected SymbolicRegressionSolutionImpactValuesCalculator(SymbolicRegressionSolutionImpactValuesCalculator original, Cloner cloner)
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| 33 | : base(original, cloner) { }
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| 34 | public override IDeepCloneable Clone(Cloner cloner) {
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| 35 | return new SymbolicRegressionSolutionImpactValuesCalculator(this, cloner);
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| 36 | }
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| 37 | [StorableConstructor]
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| 38 | protected SymbolicRegressionSolutionImpactValuesCalculator(bool deserializing) : base(deserializing) { }
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[8946] | 39 |
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[15371] | 40 | protected override double CalculateQualityForImpacts(ISymbolicDataAnalysisModel model, IDataAnalysisProblemData problemData, IEnumerable<int> rows) {
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[8946] | 41 | var regressionModel = (ISymbolicRegressionModel)model;
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| 42 | var regressionProblemData = (IRegressionProblemData)problemData;
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[15371] | 43 | var estimatedValues = regressionModel.GetEstimatedValues(problemData.Dataset, rows); // also bounds the values
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| 44 | var targetValues = problemData.Dataset.GetDoubleValues(regressionProblemData.TargetVariable, rows);
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[12720] | 45 | OnlineCalculatorError errorState;
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| 46 | var r = OnlinePearsonsRCalculator.Calculate(targetValues, estimatedValues, out errorState);
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| 47 | var quality = r * r;
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| 48 | if (errorState != OnlineCalculatorError.None) return double.NaN;
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| 49 | return quality;
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| 50 | }
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[8409] | 51 | }
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| 52 | }
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