1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2018 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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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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23 | using HeuristicLab.Common;
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24 |
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25 | namespace HeuristicLab.Problems.DataAnalysis {
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26 | public class OnlinePearsonsRSquaredCalculator : DeepCloneable, IOnlineCalculator {
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27 | private readonly OnlinePearsonsRCalculator rCalculator = new OnlinePearsonsRCalculator();
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28 |
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29 | public double RSquared
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30 | {
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31 | get
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32 | {
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33 | if (rCalculator.ErrorState != OnlineCalculatorError.None) return 0.0;
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34 | else return rCalculator.R * rCalculator.R;
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35 | }
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36 | }
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37 |
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38 | public OnlinePearsonsRSquaredCalculator() { }
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39 |
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40 | protected OnlinePearsonsRSquaredCalculator(OnlinePearsonsRSquaredCalculator original, Cloner cloner)
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41 | : base(original, cloner) {
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42 | rCalculator = cloner.Clone(original.rCalculator);
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43 | }
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44 | public override IDeepCloneable Clone(Cloner cloner) {
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45 | return new OnlinePearsonsRSquaredCalculator(this, cloner);
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46 | }
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47 |
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48 | #region IOnlineCalculator Members
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49 | public OnlineCalculatorError ErrorState
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50 | {
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51 | get { return rCalculator.ErrorState; }
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52 | }
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53 | public double Value
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54 | {
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55 | get { return RSquared; }
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56 | }
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57 | public void Reset() {
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58 | rCalculator.Reset();
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59 | }
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60 |
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61 | public void Add(double x, double y) {
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62 | rCalculator.Add(x, y);
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63 | }
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64 |
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65 | #endregion
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66 |
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67 | public static double Calculate(IEnumerable<double> first, IEnumerable<double> second, out OnlineCalculatorError errorState) {
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68 | var r = OnlinePearsonsRCalculator.Calculate(first, second, out errorState);
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69 | return r * r;
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70 | }
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71 |
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72 | public double CalculateValue(IEnumerable<double> originalValues, IEnumerable<double> estimatedValues, out OnlineCalculatorError errorState) {
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73 | return Calculate(originalValues, estimatedValues, out errorState);
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74 | }
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75 | }
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76 | }
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