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https://issues.apache.org/jira/browse/SPARK-14523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15861789#comment-15861789
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Joseph K. Bradley commented on SPARK-14523:
-------------------------------------------

I'd like to keep this open until we have linked tasks for the missing 
functionality.

[~hujiayin] This is for parity w.r.t. the RDD-based API, not for adding new 
functionality to MLlib.  I think there's already a JIRA for ARIMA somewhere.

> Feature parity for Statistics ML with MLlib
> -------------------------------------------
>
>                 Key: SPARK-14523
>                 URL: https://issues.apache.org/jira/browse/SPARK-14523
>             Project: Spark
>          Issue Type: Sub-task
>          Components: ML
>            Reporter: yuhao yang
>
> Some statistics functions have been supported by DataFrame directly. Use this 
> jira to discuss/design the statistics package in Spark.ML and its function 
> scope. Hypothesis test and correlation computation may still need to expose 
> independent interfaces.



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