mahout-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Sean Owen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAHOUT-95) UserSimilarity-based NearestNNeighborhood
Date Tue, 11 Nov 2008 09:24:44 GMT

    [ https://issues.apache.org/jira/browse/MAHOUT-95?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12646512#action_12646512
] 

Sean Owen commented on MAHOUT-95:
---------------------------------

I don't think you need to copy getTopUsers(). This could be accomplished with a Rescorer.
Pass in one that returns the original value if the similarity is at least the threshold, otherwise
NaN.

> UserSimilarity-based NearestNNeighborhood
> -----------------------------------------
>
>                 Key: MAHOUT-95
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-95
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Collaborative Filtering
>            Reporter: Otis Gospodnetic
>            Priority: Minor
>         Attachments: MAHOUT-95-diff-against-nearestN.txt, MAHOUT-95.patch, MAHOUT-95.patch
>
>
> A variation of NearestNUserNeighborhood.  This version adds the minSimilarity parameter,
which is the primary factor for including/excluding other users from the target user's neighbourhood.
 Additionally, the 'n' parameter was renamed to maxHoodSize and is used to optionally limit
the size of the neighbourhood.
> The patch is for a brand new class, but we may really want just a single class (either
keep this one and axe NearestNUserNeighborhood or add this functionality to NearestNUserNeighborhood),
if this sounds good.
> I'll update the unit test and provide a patch for that if others think this can go in.
> Thoughts?

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message