Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/17090#discussion_r103352432
--- Diff: mllib/src/main/scala/org/apache/spark/ml/recommendation/ALS.scala
---
@@ -285,6 +285,43 @@ class ALSModel private[ml] (
@Since("1.6.0")
override def write: MLWriter = new ALSModel.ALSModelWriter(this)
+
+ @Since("2.2.0")
+ def recommendForAllUsers(num: Int): DataFrame = {
+ recommendForAll(userFactors, itemFactors, $(userCol), num)
+ }
+
+ @Since("2.2.0")
+ def recommendForAllItems(num: Int): DataFrame = {
+ recommendForAll(itemFactors, userFactors, $(itemCol), num)
+ }
+
+ /**
+ * Makes recommendations for all users (or items).
+ * @param srcFactors src factors for which to generate recommendations
+ * @param dstFactors dst factors used to make recommendations
+ * @param srcOutputColumn name of the column for the source in the
output DataFrame
+ * @param num number of recommendations for each record
+ * @return a DataFrame of (srcOutputColumn: Int, recommendations), where
recommendations are
+ * stored as an array of (dstId: Int, ratingL: Double) tuples.
--- End diff --
ratingL -> rating
---
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