Changeset 12597 for branches/GBT-trunkintegration/HeuristicLab.Algorithms.DataAnalysis/3.4/GradientBoostedTrees/LossFunctions/AbsoluteErrorLoss.cs

Timestamp:

07/06/15 13:02:19 (9 years ago)

Author:

gkronber

Message:

#2261: comments

File:

• branches/GBT-trunkintegration/HeuristicLab.Algorithms.DataAnalysis/3.4/GradientBoostedTrees/LossFunctions/AbsoluteErrorLoss.cs (modified) (2 diffs)

branches/GBT-trunkintegration/HeuristicLab.Algorithms.DataAnalysis/3.4/GradientBoostedTrees/LossFunctions/AbsoluteErrorLoss.cs

@@ -52 +52 @@
 
       while (targetEnum.MoveNext() & predEnum.MoveNext() & weightEnum.MoveNext()) {
+        // weight * sign(res)
         var res = targetEnum.Current - predEnum.Current;
         if (res > 0) yield return weightEnum.Current;
@@ -61 +62 @@
     }
 
+    // return median of residuals
     public LineSearchFunc GetLineSearchFunc(IEnumerable<double> target, IEnumerable<double> pred, IEnumerable<double> weight) {
       var targetArr = target.ToArray();