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Posted to dev@mahout.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2009/06/19 07:19:07 UTC
[jira] Commented: (MAHOUT-135) Allow FileDataModel to transpose
users and items
[ https://issues.apache.org/jira/browse/MAHOUT-135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12721653#action_12721653 ]
Sean Owen commented on MAHOUT-135:
----------------------------------
Looks OK to me -- I applied the patch locally and tweaked a few things. Seems like a rare use case but simple to implement anyway. Mind if I submit over here?
> Allow FileDataModel to transpose users and items
> ------------------------------------------------
>
> Key: MAHOUT-135
> URL: https://issues.apache.org/jira/browse/MAHOUT-135
> Project: Mahout
> Issue Type: Improvement
> Components: Collaborative Filtering
> Reporter: Grant Ingersoll
> Assignee: Grant Ingersoll
> Priority: Minor
> Fix For: 0.2
>
> Attachments: MAHOUT-135.patch
>
>
> Sometimes it would be nice to flip around users and items in the FileDataModel. This patch adds a transpose boolean that flips userId and itemId in the processLine method.
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Re: [jira] Commented: (MAHOUT-135) Allow FileDataModel to transpose
users and items
Posted by Ted Dunning <te...@gmail.com>.
Transposing is actually a common need as you abstract away from users and
ratings.
On Thu, Jun 18, 2009 at 10:19 PM, Sean Owen (JIRA) <ji...@apache.org> wrote:
> Looks OK to me -- I applied the patch locally and tweaked a few things.
> Seems like a rare use case but simple to implement anyway. Mind if I submit
> over here?
>
> > Allow FileDataModel to transpose users and items
>
>