Github user sethah commented on a diff in the pull request:
https://github.com/apache/spark/pull/19638#discussion_r149559666
--- Diff:
mllib/src/test/scala/org/apache/spark/ml/regression/LinearRegressionSuite.scala
---
@@ -764,13 +764,17 @@ class LinearRegressionSuite
(Intercept) 6.3022157 0.0018600 3388 <2e-16 ***
V2 4.6982442 0.0011805 3980 <2e-16 ***
V3 7.1994344 0.0009044 7961 <2e-16 ***
+
+ # R code for r2adj
--- End diff --
There may be some confusion. If you type that code, "as-is", into an R
shell, it will not work. It reference a variable called `X1`, which is never
defined. When we provide R code in comments like this, we intend for it to be
copy and pasted into a shell and just work. So, it does not function.
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