source: branches/SimplifierViewsProgress/HeuristicLab.Problems.DataAnalysis.Symbolic.Regression/3.4/SymbolicRegressionSolutionImpactValuesCalculator.cs @ 15321

Last change on this file since 15321 was 15321, checked in by pfleck, 3 years ago

#1666

  • Moved CalculateImpactAndReplacementValues into base-class.
  • Use SymRegImpactCalculator for SymTimeSeriesPrognosis.
  • Unified CalculateImpactAndReplacementValues for all SimplifierViews.
File size: 2.6 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2016 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.Collections.Generic;
23using HeuristicLab.Common;
24using HeuristicLab.Core;
25using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
26
27namespace HeuristicLab.Problems.DataAnalysis.Symbolic.Regression {
28  [StorableClass]
29  [Item("SymbolicRegressionSolutionImpactValuesCalculator", "Calculate symbolic expression tree node impact values for regression problems.")]
30  public class SymbolicRegressionSolutionImpactValuesCalculator : SymbolicDataAnalysisSolutionImpactValuesCalculator {
31    public SymbolicRegressionSolutionImpactValuesCalculator() { }
32    protected SymbolicRegressionSolutionImpactValuesCalculator(SymbolicRegressionSolutionImpactValuesCalculator original, Cloner cloner)
33      : base(original, cloner) { }
34    public override IDeepCloneable Clone(Cloner cloner) {
35      return new SymbolicRegressionSolutionImpactValuesCalculator(this, cloner);
36    }
37    [StorableConstructor]
38    protected SymbolicRegressionSolutionImpactValuesCalculator(bool deserializing) : base(deserializing) { }
39
40    protected override double CalculateQualityForImpacts(ISymbolicDataAnalysisModel model, IDataAnalysisProblemData problemData, IEnumerable<int> rows) {
41      var regressionModel = (ISymbolicRegressionModel)model;
42      var regressionProblemData = (IRegressionProblemData)problemData;
43      var estimatedValues = regressionModel.GetEstimatedValues(problemData.Dataset, rows); // also bounds the values
44      var targetValues = problemData.Dataset.GetDoubleValues(regressionProblemData.TargetVariable, rows);
45      OnlineCalculatorError errorState;
46      var r = OnlinePearsonsRCalculator.Calculate(targetValues, estimatedValues, out errorState);
47      var quality = r * r;
48      if (errorState != OnlineCalculatorError.None) return double.NaN;
49      return quality;
50    }
51  }
52}
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