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https://issues.apache.org/jira/browse/MAHOUT-1368?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Suneel Marthi resolved MAHOUT-1368.
-----------------------------------
Resolution: Fixed
Assignee: Suneel Marthi
Patch committed to trunk.
> Convert OnlineSummarizer to use the new TDigest
> -----------------------------------------------
>
> Key: MAHOUT-1368
> URL: https://issues.apache.org/jira/browse/MAHOUT-1368
> Project: Mahout
> Issue Type: Bug
> Reporter: Ted Dunning
> Assignee: Suneel Marthi
> Fix For: 0.9
>
> Attachments: MAHOUT-1368.patch
>
>
> The new TDigest provides better accuracy for quartile estimation as well as
> producing any other quantile you might like. The current quartile estimation
> of the OnlineSummarizer fails for highly skewed distributions and can't
> really be extended to provide other quantiles. The TDigest handles all of
> this.
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