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Posted to issues@spark.apache.org by "Alok Singh (JIRA)" <ji...@apache.org> on 2016/04/12 03:55:26 UTC

[jira] [Created] (SPARK-14550) OneHotEncoding wrapper in SparkR

Alok Singh created SPARK-14550:
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             Summary: 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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