[11291] | 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2014 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 HeuristicLab.Common;
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[11271] | 23 | using HeuristicLab.Core;
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| 24 | using HeuristicLab.Data;
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| 25 | using HeuristicLab.Optimization.Operators;
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| 26 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 27 |
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| 28 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic {
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| 29 | [Item("PhenotypicSimilarityCalculator", "An operator that calculates the similarity betweeon two trees based on the correlation of their outputs.")]
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| 30 | [StorableClass]
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| 31 | public class PhenotypicSimilarityCalculator : SingleObjectiveSolutionSimilarityCalculator {
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| 32 | public PhenotypicSimilarityCalculator(PhenotypicSimilarityCalculator original, Cloner cloner)
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| 33 | : base(original, cloner) {
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| 34 | }
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| 35 |
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| 36 | public PhenotypicSimilarityCalculator() { }
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| 37 |
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| 38 | [StorableConstructor]
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| 39 | protected PhenotypicSimilarityCalculator(bool deserializing) : base(deserializing) { }
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| 40 |
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| 41 | public override IDeepCloneable Clone(Cloner cloner) {
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| 42 | return new PhenotypicSimilarityCalculator(this, cloner);
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| 43 | }
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| 44 |
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| 45 | public override double CalculateSolutionSimilarity(IScope leftSolution, IScope rightSolution) {
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| 46 | var leftValues = (DoubleArray)leftSolution.Variables["EstimatedValues"].Value;
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| 47 | var rightValues = (DoubleArray)rightSolution.Variables["EstimatedValues"].Value;
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| 48 | OnlineCalculatorError error;
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| 49 | var r2 = OnlinePearsonsRSquaredCalculator.Calculate(leftValues, rightValues, out error);
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| 50 |
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| 51 | if (r2 > 1.0)
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| 52 | r2 = 1.0; // sometimes due to fp errors it can happen that the r2 is over 1 (like 1.0000000009)
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| 53 |
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| 54 | return error != OnlineCalculatorError.None ? 0 : r2;
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| 55 | }
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| 56 | }
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| 57 | }
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