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https://issues.apache.org/jira/browse/JENA-1156?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15192422#comment-15192422
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ASF subversion and git services commented on JENA-1156:
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Commit 9538e47368e886d3710f22b41ff9f409d1a86626 in jena's branch
refs/heads/master from [~andy.seaborne]
[ https://git-wip-us.apache.org/repos/asf?p=jena.git;h=9538e47 ]
JENA-1156: add agg:stdev, agg:stdev_samp, agg:stdev_pop and variance.
And DISINCT versions: URI + "d"
Contributes to JENA-803.
Includes refactoring in the gramamr for SPARQL 1.1.
Includes fixes and changes to the grammar for the ARQ language.
> Custom aggreagtes for the statistical operations.
> -------------------------------------------------
>
> Key: JENA-1156
> URL: https://issues.apache.org/jira/browse/JENA-1156
> Project: Apache Jena
> Issue Type: Improvement
> Affects Versions: Jena 3.0.1
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Fix For: Jena 3.1.0
>
>
> Add custom aggregates for the equivalent of SQL's STDEV, STDEVP, VAR, and
> VARP as
> {noformat}
> afn:stddev
> afn:stddevp
> afn:var
> afn:varp
> {noformat}
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