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Nick Pentreath commented on SPARK-10802: ---------------------------------------- SPARK-20679 has been completed for the new ML API. I've closed this as we won't be doing it in the RDD API as mentioned above. > Let ALS recommend for subset of data > ------------------------------------ > > Key: SPARK-10802 > URL: https://issues.apache.org/jira/browse/SPARK-10802 > Project: Spark > Issue Type: Improvement > Components: MLlib > Affects Versions: 1.5.0 > Reporter: Tomasz Bartczak > Priority: Minor > > Currently MatrixFactorizationModel allows to get recommendations for > - single user > - single product > - all users > - all products > recommendation for all users/products do a cartesian join inside. > It would be useful in some cases to get recommendations for subset of > users/products by providing an RDD with which MatrixFactorizationModel could > do an intersection before doing a cartesian join. This would make it much > faster in situation where recommendations are needed only for subset of > users/products, and when the subset is still too large to make it feasible to > recommend one-by-one. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org