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Posted to issues@spark.apache.org by "Felix Cheung (JIRA)" <ji...@apache.org> on 2017/01/18 17:28:26 UTC

[jira] [Comment Edited] (SPARK-18570) Consider supporting other R formula operators

    [ https://issues.apache.org/jira/browse/SPARK-18570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15828432#comment-15828432 ] 

Felix Cheung edited comment on SPARK-18570 at 1/18/17 5:27 PM:
---------------------------------------------------------------

[~KrishnaKalyan3]I think supporting 
{code}
x * y
(a+b+c)^2
{code}

and double checking
{code}
- a:b
{code}
is supported (ie. - non-constant term)

would be a great starting point!



was (Author: felixcheung):
[~KrishnaKalyan3]I think supporting 
x * y
(a+b+c)^2

and double checking
- a:b
is supported (ie. - non-constant term)

would be a great starting point!


> Consider supporting other R formula operators
> ---------------------------------------------
>
>                 Key: SPARK-18570
>                 URL: https://issues.apache.org/jira/browse/SPARK-18570
>             Project: Spark
>          Issue Type: Sub-task
>          Components: ML, SparkR
>            Reporter: Felix Cheung
>            Priority: Minor
>
> Such as
> {code}
> ∗ 
>  X∗Y include these variables and the interactions between them
> ^
>  (X + Z + W)^3 include these variables and all interactions up to three way
> |
>  X | Z conditioning: include x given z
> {code}
> Other includes, %in%, ` (backtick)
> https://stat.ethz.ch/R-manual/R-devel/library/stats/html/formula.html



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