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Deborah Siegel commented on SPARK-6823: --------------------------------------- does SPARK-9681 address RFormula supporting identity? eg. (~ . ) for model.matrix of features? would be useful. > Add a model.matrix like capability to DataFrames (modelDataFrame) > ----------------------------------------------------------------- > > Key: SPARK-6823 > URL: https://issues.apache.org/jira/browse/SPARK-6823 > Project: Spark > Issue Type: New Feature > Components: ML, SparkR > Reporter: Shivaram Venkataraman > > Currently Mllib modeling tools work only with double data. However, data > tables in practice often have a set of categorical fields (factors in R), > that need to be converted to a set of 0/1 indicator variables (making the > data actually used in a modeling algorithm completely numeric). In R, this is > handled in modeling functions using the model.matrix function. Similar > functionality needs to be available within Spark. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org