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Yibo CaiAntoine Pitrou
153577da120
Yibo Cai authored and Antoine Pitrou committed 922fb984d20
ARROW-11541: [C++][Compute] Implement tdigest kernel

Implement approximate quantile kernel using t-digest util.

Closes #9435 from cyb70289/quantile-approx

Lead-authored-by: Yibo Cai <yibo.cai@arm.com>
Co-authored-by: Antoine Pitrou <antoine@python.org>
Signed-off-by: Antoine Pitrou <antoine@python.org>