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https://issues.apache.org/jira/browse/SPARK-18570?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-18570:
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Assignee: Apache Spark
> 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
> Assignee: Apache Spark
> 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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