Changeset 14844 for branches

Timestamp:

04/11/17 16:13:16 (8 years ago)

Author:

gkronber

Message:

#745 ordered rows for coefficients in data-table by total absolute value

File:

• branches/HeuristicLab.Algorithms.DataAnalysis.Glmnet/3.4/ElasticNetLinearRegression.cs (modified) (1 diff)

branches/HeuristicLab.Algorithms.DataAnalysis.Glmnet/3.4/ElasticNetLinearRegression.cs

@@ -145 +145 @@
         var path = Enumerable.Range(0, nLambdas).Select(r => Tuple.Create(lambda[r], coeff[r, i] * sigma)).ToArray();
         dataRows[i] = new IndexedDataRow<double>(coeffId, coeffId, path);
-        coeffTable.Rows.Add(dataRows[i]);
-      }
+      }
+      // add to coeffTable by total weight (larger area under the curve => more important);
+      foreach (var r in dataRows.OrderByDescending(r => r.Values.Select(t => t.Item2).Sum(x => Math.Abs(x)))) {
+        coeffTable.Rows.Add(r);
+      }
+
       for (int i = 0; i < coeff.GetLength(0); i++) {
         for (int j = 0; j < coeff.GetLength(1); j++) {