Got your point, thanks Sharma and Peng for your replies.
On Mon, Aug 25, 2014 at 4:50 PM, Yash Sharma <[email protected]> wrote: > Mahout collab filtering would remove the items you have already rated since > you would not want to see the same items which you have already used and > rated. > > > On Mon, Aug 25, 2014 at 2:14 PM, Wei Li <[email protected]> wrote: > > > OK, why not just output the items uses clicked or rated before? does it > > output the these records if we provide the userFile option? thanks. > > > > > > On Mon, Aug 25, 2014 at 4:41 PM, Peng Zhang <[email protected]> > wrote: > > > > > If there are no suitable recommendations for a user, the output will > not > > > contain any records related to this user. > > > > > > > > > Peng Zhang > > > > > > > > > On Aug 25, 2014, at 4:38 PM, Wei Li <[email protected]> wrote: > > > > > > > thanks Peng's answers. Yes, I know this case, but RecommenderJob does > > not > > > > output these records? > > > > > > > > > > > > On Mon, Aug 25, 2014 at 3:37 PM, Peng Zhang <[email protected]> > > > wrote: > > > > > > > >> If an item is not similar to anyone else, and a user only connects > > with > > > >> this item, this user doesnt get any recommended items. > > > >> > > > >> This is just one example. > > > >> > > > >> Peng Zhang > > > >> > > > >> -- > > > >> Sent from my iPhone > > > >> > > > >>> On Aug 25, 2014, at 2:22 PM, Wei Li <[email protected]> wrote: > > > >>> > > > >>> Hi Mahout users: > > > >>> > > > >>> We have tried the item-based CF recommender with a user_id, > > item_id, > > > >>> rating data. while the recommendation output is less than our > > expected, > > > >> for > > > >>> example, if we have 1000 users, the output should have 1000 > records, > > > one > > > >>> for each user, right? > > > >>> > > > >>> Best > > > >>> Wei > > > >> > > > > > > > > >
