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https://issues.apache.org/jira/browse/ARROW-10831?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated ARROW-10831:
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Labels: pull-request-available (was: )
> [C++][Compute] Implemement quantile kernel
> ------------------------------------------
>
> Key: ARROW-10831
> URL: https://issues.apache.org/jira/browse/ARROW-10831
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Yibo Cai
> Assignee: Yibo Cai
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Similar function as
> [https://numpy.org/doc/stable/reference/generated/numpy.quantile.html]
> Support chunked array, and calculate multiple quantiles at once.
> Possibly implement features in steps:
> - implement exact quantile kernel which records all chunks and partition at
> finalize
> - reduce memory footprint for integer inputs by maintaining "value:count"
> histogram
> - implement approximate quantile kernel without storing input values
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