Github user imatiach-msft commented on a diff in the pull request:
https://github.com/apache/spark/pull/16699#discussion_r97870619
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/optim/IterativelyReweightedLeastSquares.scala
---
@@ -20,6 +20,7 @@ package org.apache.spark.ml.optim
import org.apache.spark.internal.Logging
import org.apache.spark.ml.feature.Instance
import org.apache.spark.ml.linalg._
+import org.apache.spark.ml.regression.GLRInstance
--- End diff --
this is a bit strange - you are using the GLRInstance that you added to
specifically GeneralizedLinearRegression.scala in the more generic optimizer
IterativelyReweightedLeastSquares.scala. It doesn't seem right for this file
to depend on anything in the regression directory, it should really be the
other way around.
I'm wondering if either:
1.) We can move the GLRInstance to a more generic place
2.) OR add it to Instance.scala as a separate case class eg "OffsetInstance"
3.) OR keep the offset a separate value
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