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https://issues.apache.org/jira/browse/BEAM-12550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17406258#comment-17406258
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Beam JIRA Bot commented on BEAM-12550:
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This issue is P2 but has been unassigned without any comment for 60 days so it
has been labeled "stale-P2". If this issue is still affecting you, we care!
Please comment and remove the label. Otherwise, in 14 days the issue will be
moved to P3.
Please see https://beam.apache.org/contribute/jira-priorities/ for a detailed
explanation of what these priorities mean.
> Implement parallelizable skew and kurtosis
> -------------------------------------------
>
> Key: BEAM-12550
> URL: https://issues.apache.org/jira/browse/BEAM-12550
> Project: Beam
> Issue Type: Improvement
> Components: dsl-dataframe
> Reporter: Brian Hulette
> Priority: P2
> Labels: stale-P2
>
> skew and kurtosis should be parallelizable/lifftable by using a similar
> [approach as std and
> var|https://github.com/apache/beam/blob/a0f5e932d8a9aa491b16361abdc629b5e9a483f6/sdks/python/apache_beam/dataframe/frames.py#L1307-L1310].
> See
> https://en.wikipedia.org/wiki/Algorithms_for_calculating_variance#Higher-order_statistics
> which has information on extending that approach to calculating the third and
> fourth central moments, needed for skew and kurtosis.
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