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Posted to issues@spark.apache.org by "Debasish Das (JIRA)" <ji...@apache.org> on 2014/11/05 02:24:33 UTC

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

Debasish Das created SPARK-4231:
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             Summary: 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


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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