Changeset 13784 for trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/GaussianProcess/CovarianceFunctions/CovarianceProduct.cs
- Timestamp:
- 04/22/16 13:47:35 (8 years ago)
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-
- 1 edited
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trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/GaussianProcess/CovarianceFunctions/CovarianceProduct.cs
r13721 r13784 23 23 using System.Collections.Generic; 24 24 using System.Linq; 25 using System.Linq.Expressions;26 25 using HeuristicLab.Common; 27 26 using HeuristicLab.Core; … … 93 92 } 94 93 95 public static I Enumerable<double> GetGradient(double[,] x, int i, int j, List<ParameterizedCovarianceFunction> factorFunctions) {94 public static IList<double> GetGradient(double[,] x, int i, int j, List<ParameterizedCovarianceFunction> factorFunctions) { 96 95 var covariances = factorFunctions.Select(f => f.Covariance(x, i, j)).ToArray(); 96 var gr = new List<double>(factorFunctions.Sum(f => f.CovarianceGradient(x, i, j).Count)); 97 97 for (int ii = 0; ii < factorFunctions.Count; ii++) { 98 98 foreach (var g in factorFunctions[ii].CovarianceGradient(x, i, j)) { … … 100 100 for (int jj = 0; jj < covariances.Length; jj++) 101 101 if (ii != jj) res *= covariances[jj]; 102 yield return res;102 gr.Add(res); 103 103 } 104 104 } 105 return gr; 105 106 } 106 107 }
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