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From "Xiangrui Meng (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-8774) Add R model formula with basic support as a transformer
Date Thu, 16 Jul 2015 03:34:04 GMT

     [ https://issues.apache.org/jira/browse/SPARK-8774?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xiangrui Meng resolved SPARK-8774.
----------------------------------
       Resolution: Fixed
    Fix Version/s: 1.5.0

Issue resolved by pull request 7381
[https://github.com/apache/spark/pull/7381]

> Add R model formula with basic support as a transformer
> -------------------------------------------------------
>
>                 Key: SPARK-8774
>                 URL: https://issues.apache.org/jira/browse/SPARK-8774
>             Project: Spark
>          Issue Type: New Feature
>          Components: ML, SparkR
>            Reporter: Xiangrui Meng
>            Assignee: Eric Liang
>            Priority: Critical
>             Fix For: 1.5.0
>
>
> To have better integration with SparkR, we can add a feature transformer to support R
formula. A list of operators R supports can be find here: http://ww2.coastal.edu/kingw/statistics/R-tutorials/formulae.html
> The initial version should support "~", "+", and "." on numeric columns and we can expand
it in the future.
> {code}
> val formula = new RModelFormula()
>   .setFormula("y ~ x + z")
> {code}
> The output should append two new columns: features and label.
> Design doc is posted at https://docs.google.com/document/d/10NZNSEurN2EdWM31uFYsgayIPfCFHiuIu3pCWrUmP_c/edit?usp=sharing,
as part of SPARK-6805.



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