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https://issues.apache.org/jira/browse/SYSTEMML-1927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm closed SYSTEMML-1927.
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Resolution: Done
Assignee: Matthias Boehm
Fix Version/s: SystemML 1.0.0
> New transformcolmap builtin function
> ------------------------------------
>
> Key: SYSTEMML-1927
> URL: https://issues.apache.org/jira/browse/SYSTEMML-1927
> Project: SystemML
> Issue Type: Task
> Reporter: Matthias Boehm
> Assignee: Matthias Boehm
> Priority: Major
> Fix For: SystemML 1.0.0
>
>
> 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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