[jira] [Commented] (SPARK-4231) Add RankingMetrics to examples.MovieLensALS

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-4231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14197315#comment-14197315 ] 

Apache Spark commented on SPARK-4231:
-------------------------------------

User 'debasish83' has created a pull request for this issue:
https://github.com/apache/spark/pull/3098

> Add RankingMetrics to examples.MovieLensALS
> -------------------------------------------
>
>                 Key: SPARK-4231
>                 URL: https://issues.apache.org/jira/browse/SPARK-4231
>             Project: Spark
>          Issue Type: Improvement
>          Components: Examples
>    Affects Versions: 1.2.0
>            Reporter: Debasish Das
>             Fix For: 1.2.0
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> examples.MovieLensALS computes RMSE for movielens dataset but after addition of RankingMetrics and enhancements to ALS, it is critical to look at not only the RMSE but also measures like prec@k and MAP.
> In this JIRA we added RMSE and MAP computation for examples.MovieLensALS and also added a flag that takes an input whether user/product recommendation is being validated.
>  



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