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Posted to jira@arrow.apache.org by "David Li (Jira)" <ji...@apache.org> on 2022/04/19 15:19:00 UTC

[jira] [Commented] (ARROW-16234) [C++] Implement Rank Kernel

    [ https://issues.apache.org/jira/browse/ARROW-16234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17524385#comment-17524385 ] 

David Li commented on ARROW-16234:
----------------------------------

This would have to be a vector kernel.

We may also want a group-by version (looking at the Pandas docs).

> [C++] Implement Rank Kernel
> ---------------------------
>
>                 Key: ARROW-16234
>                 URL: https://issues.apache.org/jira/browse/ARROW-16234
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Will Ayd
>            Priority: Minor
>              Labels: C++, good-second-issue, kernel
>
> Didn't see this in the library already so apologies if overlooked, but I think it would be nice to add a compute kernel for ranking. Here is a similar function in pandas:
> [https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.Series.rank.html]



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