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https://issues.apache.org/jira/browse/ARROW-15736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17497519#comment-17497519
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Joris Van den Bossche commented on ARROW-15736:
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For reference, we already have a "argsort" kernel ({{sort_to_indices}}, from
ARROW-1566, later renamed in ARROW-6232)
> [C++] Aggregate functions for min and max index.
> ------------------------------------------------
>
> Key: ARROW-15736
> URL: https://issues.apache.org/jira/browse/ARROW-15736
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: A. Coady
> Priority: Major
> Labels: kernel
>
> Numpy and Pandas both have `argmin` and `argmax`, for the common use case of
> finding values in parallel arrays which correspond to min or max values.
> Proposals:
> * `min_max_index` for arrays
> * `hash_min_max_index` for aggregations
> * some ability to break ties:
> ** `min_max_index` for tables with multiple sort keys, similar to
> `sort_indices`
> ** `min_max_indices` for arrays to match all equal values
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