Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/17090#discussion_r103354132
--- Diff: mllib/src/main/scala/org/apache/spark/ml/recommendation/ALS.scala
---
@@ -285,6 +286,55 @@ class ALSModel private[ml] (
@Since("1.6.0")
override def write: MLWriter = new ALSModel.ALSModelWriter(this)
+
+ /**
+ * Returns top `num` items recommended for each user, for all users.
+ * @param num number of recommendations for each user
--- End diff --
number -> max number
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