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https://issues.apache.org/jira/browse/SPARK-14550?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joseph K. Bradley closed SPARK-14550.
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Resolution: Later
> OneHotEncoding wrapper in SparkR
> --------------------------------
>
> Key: SPARK-14550
> URL: https://issues.apache.org/jira/browse/SPARK-14550
> Project: Spark
> Issue Type: New Feature
> Components: ML, SparkR
> Reporter: Alok Singh
>
> Implement OneHotEncoding in R.
> In R , usually one can use model.matrix to do one hot encoding. which accepts
> formula. I think we can support simple formula here.
> model.matrix doc:
> https://stat.ethz.ch/R-manual/R-devel/library/stats/html/model.matrix.html
> here is the example, that would be nice to have
> example :
> http://stackoverflow.com/questions/16200241/recode-categorical-factor-with-n-categories-into-n-binary-columns
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