Yibo Cai created ARROW-10831:
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Summary: [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
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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