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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SYSTEMML-1927) New transformcolmap builtin function
Date Thu, 21 Sep 2017 06:10:00 GMT
Matthias Boehm created SYSTEMML-1927:
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             Summary: New transformcolmap builtin function
                 Key: SYSTEMML-1927
                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1927
             Project: SystemML
          Issue Type: Task
            Reporter: Matthias Boehm


Our decision tree script requires dummy coded inputs (in case of categorical attributes) as
well as a mapping matrix indicating which attributes where mapped to which dummy coded features.
This task aims to introduce a builtin function {{transformcolmap}} that allows to directly
compute this mapping matrix from the frame meta data, returned from {{transformencode}}.

Once this builtin function is in place, we might want to simplify the decision tree script,
doing all this pre-processing internally instead of require the user to handle it.



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