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https://issues.apache.org/jira/browse/SPARK-18570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15822922#comment-15822922
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Krishna Kalyan commented on SPARK-18570:
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Thanks [~yanboliang] [~felixcheung],
We could start by supporting interaction term x*y. (x + y + x:y). Could you
please advice on what other operators we could support?.
Thanks,
Krishna
> 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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