Changeset 6654

Timestamp:

08/12/11 08:19:02 (13 years ago)

Author:

gkronber

Message:

#1620 improved memory consumption when importing classification problems

File:

• trunk/sources/HeuristicLab.Problems.DataAnalysis/3.4/Implementation/Classification/ClassificationProblemData.cs (modified) (3 diffs)

trunk/sources/HeuristicLab.Problems.DataAnalysis/3.4/Implementation/Classification/ClassificationProblemData.cs

@@ -267 +267 @@
     private static IEnumerable<string> CheckVariablesForPossibleTargetVariables(Dataset dataset) {
       int maxSamples = Math.Min(InspectedRowsToDetermineTargets, dataset.Rows);
-      var validTargetVariables = from v in dataset.VariableNames
-                                 let DistinctValues = dataset.GetVariableValues(v)
-                                   .Take(maxSamples)
-                                   .Distinct()
-                                   .Count()
-                                 where DistinctValues < MaximumNumberOfClasses
-                                 select v;
+      var validTargetVariables = (from v in dataset.VariableNames
+                                  let distinctValues = dataset.GetEnumeratedVariableValues(v)
+                                    .Take(maxSamples)
+                                    .Distinct()
+                                    .Count()
+                                  where distinctValues < MaximumNumberOfClasses
+                                  select v).ToArray();
 
       if (!validTargetVariables.Any())
@@ -283 +283 @@
 
     private void ResetTargetVariableDependentMembers() {
-      DergisterParameterEvents();
+      DeregisterParameterEvents();
 
       classNames = null;
@@ -357 +357 @@
       ClassificationPenaltiesParameter.Value.ItemChanged += new EventHandler<EventArgs<int, int>>(MatrixParameter_ItemChanged);
     }
-    private void DergisterParameterEvents() {
+    private void DeregisterParameterEvents() {
       TargetVariableParameter.ValueChanged -= new EventHandler(TargetVariableParameter_ValueChanged);
       ClassNamesParameter.Value.Reset -= new EventHandler(Parameter_ValueChanged);