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Posted to issues@systemml.apache.org by "Matthias Boehm (JIRA)" <ji...@apache.org> on 2017/09/21 06:10:00 UTC

[jira] [Created] (SYSTEMML-1927) New transformcolmap builtin function

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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