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https://issues.apache.org/jira/browse/MAHOUT-1878?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Musselman resolved MAHOUT-1878.
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    Resolution: Won't Do

JIRA cleanup on Jan 31 2024

> implement quartile type thresholds for indicator matrix downsampling
> --------------------------------------------------------------------
>
>                 Key: MAHOUT-1878
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1878
>             Project: Mahout
>          Issue Type: New Feature
>          Components: Collaborative Filtering, cooccurrence
>            Reporter: Pat Ferrel
>            Assignee: Pat Ferrel
>            Priority: Major
>             Fix For: 1.0.0
>
>
> https://issues.apache.org/jira/browse/MAHOUT-1853
> second half of the above, see discussion of downsampling by fraction of 
> matrix retained, perhaps using t-digest.



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