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  1. Apache Arrow
  2. ARROW-10831

[C++][Compute] Implemement quantile kernel

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Details

    • New Feature
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 4.0.0
    • C++

    Description

      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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              yibocai Yibo Cai
              yibocai Yibo Cai
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