Changeset 6740 for trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/Linear

Timestamp:

09/12/11 13:48:31 (13 years ago)

Author:

mkommend

Message:

#1597, #1609, #1640:

• Corrected TableFileParser to handle empty rows correctly.
• Refactored DataSet to store values in List<List> instead of a two-dimensional array.
• Enable importing and storing string and datetime values.
• Changed data access methods in dataset and adapted all concerning classes.
• Changed interpreter to store the variable values for all rows during the compilation step.

Location:

trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/Linear

Files:

• AlglibUtil.cs (modified) (1 diff)
• MultinomialLogitClassification.cs (modified) (1 diff)

trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/Linear/AlglibUtil.cs

@@ -31 +31 @@
 
       double[,] matrix = new double[rowsList.Count, variablesList.Count];
-      for (int row = 0; row < rowsList.Count; row++) {
-        int col = 0;
-        foreach (string column in variables) {
-          matrix[row, col] = dataset[column, rowsList[row]];
-          col++;
+
+      int col = 0;
+      foreach (string column in variables) {
+        var values = dataset.GetDoubleValues(column, rows);
+        int row = 0;
+        foreach (var value in values) {
+          matrix[row, col] = value;
+          row++;
         }
+        col++;
       }
+
       return matrix;
     }

trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/Linear/MultinomialLogitClassification.cs

@@ -78 +78 @@
       int nRows = inputMatrix.GetLength(0);
       int nFeatures = inputMatrix.GetLength(1) - 1;
-      double[] classValues = dataset.GetVariableValues(targetVariable).Distinct().OrderBy(x => x).ToArray();
+      double[] classValues = dataset.GetDoubleValues(targetVariable).Distinct().OrderBy(x => x).ToArray();
       int nClasses = classValues.Count();
       // map original class values to values [0..nClasses-1]