You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@mahout.apache.org by "Sebastian Schelter (JIRA)" <ji...@apache.org> on 2014/04/27 09:52:14 UTC
[jira] [Resolved] (MAHOUT-1428) Recommending already consumed items
[ https://issues.apache.org/jira/browse/MAHOUT-1428?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sebastian Schelter resolved MAHOUT-1428.
----------------------------------------
Resolution: Won't Fix
No activity for several weeks.
> Recommending already consumed items
> -----------------------------------
>
> Key: MAHOUT-1428
> URL: https://issues.apache.org/jira/browse/MAHOUT-1428
> Project: Mahout
> Issue Type: Bug
> Components: Collaborative Filtering
> Reporter: Mario Levitin
> Fix For: 1.0
>
>
> Mahout does not recommend items which are already consumed by the user.
> For example,
> In the getAllOtherItems method of GenericUserBasedRecommender class there is the following line
> possibleItemIDs.removeAll(dataModel.getItemIDsFromUser(theUserID));
> which removes user's items from the possibleItemIDs to prevent these items from being recommended to the user. This is ok for many recommendation cases but for many other cases it is not.
> The Recommender classes (I mean all of them, NN-based and SVD-based as well as hadoop and non-hadoop versions) might have a parameter for this for excluding or not excluding user items in the returned recommendations.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
Re: [jira] [Resolved] (MAHOUT-1428) Recommending already consumed items
Posted by dodi hakim <do...@gmail.com>.
Is it possible to re-open the issue so I can work on this?
On 27 April 2014 17:52, Sebastian Schelter (JIRA) <ji...@apache.org> wrote:
>
> [
> https://issues.apache.org/jira/browse/MAHOUT-1428?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel]
>
> Sebastian Schelter resolved MAHOUT-1428.
> ----------------------------------------
>
> Resolution: Won't Fix
>
> No activity for several weeks.
>
> > Recommending already consumed items
> > -----------------------------------
> >
> > Key: MAHOUT-1428
> > URL: https://issues.apache.org/jira/browse/MAHOUT-1428
> > Project: Mahout
> > Issue Type: Bug
> > Components: Collaborative Filtering
> > Reporter: Mario Levitin
> > Fix For: 1.0
> >
> >
> > Mahout does not recommend items which are already consumed by the user.
> > For example,
> > In the getAllOtherItems method of GenericUserBasedRecommender class
> there is the following line
> > possibleItemIDs.removeAll(dataModel.getItemIDsFromUser(theUserID));
> > which removes user's items from the possibleItemIDs to prevent these
> items from being recommended to the user. This is ok for many
> recommendation cases but for many other cases it is not.
> > The Recommender classes (I mean all of them, NN-based and SVD-based as
> well as hadoop and non-hadoop versions) might have a parameter for this for
> excluding or not excluding user items in the returned recommendations.
>
>
>
> --
> This message was sent by Atlassian JIRA
> (v6.2#6252)
>
--
Best Regards,
Dodi Amar Hakim