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From "Pat Ferrel (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAHOUT-1853) Improvements to CCO (Correlated Cross-Occurrence)
Date Sun, 21 Aug 2016 00:57:20 GMT

    [ https://issues.apache.org/jira/browse/MAHOUT-1853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15429550#comment-15429550
] 

Pat Ferrel commented on MAHOUT-1853:
------------------------------------

ok first part implemented. Not sure Ted's suggestion will get into this release so I'm moving
this Jira to not loose his comments. 

Finished the fixed threshold and number of indicators per item for every pair of matrices.
So A'A can have an llr threshold as well as a # per row that is different than A'B and so
forth.

> Improvements to CCO (Correlated Cross-Occurrence)
> -------------------------------------------------
>
>                 Key: MAHOUT-1853
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1853
>             Project: Mahout
>          Issue Type: New Feature
>    Affects Versions: 0.12.0
>            Reporter: Andrew Palumbo
>            Assignee: Pat Ferrel
>             Fix For: 0.13.0
>
>
> Improvements to CCO (Correlated Cross-Occurrence) to include auto-threshold calculation
for LLR downsampling, and possible multiple fixed thresholds for A’A, A’B etc. This is
to account for the vast difference in dimensionality between indicator types.



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