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Posted to dev@mahout.apache.org by "Pat Ferrel (JIRA)" <ji...@apache.org> on 2016/08/21 01:06:21 UTC

[jira] [Commented] (MAHOUT-1878) implement quartile type thresholds for indicator matrix downsampling

    [ https://issues.apache.org/jira/browse/MAHOUT-1878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15429553#comment-15429553 ] 

Pat Ferrel commented on MAHOUT-1878:
------------------------------------

see discussion here
https://issues.apache.org/jira/browse/MAHOUT-1853

> 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
>             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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