Github user yanboliang commented on a diff in the pull request:
https://github.com/apache/spark/pull/16009#discussion_r89671075
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/feature/ChiSqSelector.scala ---
@@ -49,15 +49,13 @@ private[feature] trait ChiSqSelectorParams extends
Params
*
* @group param
*/
- @Since("1.6.0")
--- End diff --
Usually we don't add ```since``` tag to variables and functions in traits,
since they may be inherited by new child classes later on and the tag is
incorrect for them.
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