[jira] [Resolved] (SPARK-4396) Support lookup by index in Rating

["Xiangrui Meng (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-4396?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xiangrui Meng resolved SPARK-4396.
----------------------------------
       Resolution: Fixed
    Fix Version/s: 1.2.0

Issue resolved by pull request 3261
[https://github.com/apache/spark/pull/3261]

> Support lookup by index in Rating
> ---------------------------------
>
>                 Key: SPARK-4396
>                 URL: https://issues.apache.org/jira/browse/SPARK-4396
>             Project: Spark
>          Issue Type: New Feature
>          Components: MLlib, PySpark
>            Reporter: Xiangrui Meng
>            Assignee: Xiangrui Meng
>             Fix For: 1.2.0
>
>
> In PySpark, ALS can take an RDD of (user, product, rating) tuples as input. However, model.predict outputs an RDD of Rating. So on the input side, users can use r[0], r[1], r[2], while on the output side, users have to use r.user, r.product, r.rating. We should allow lookup by index in Rating.



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