On Tue, Oct 25, 2011 at 4:08 PM, Vishal Santoshi <[email protected]> wrote: > In our case the preferences is a user clicking on an article ( which > doubles as an item ). > And these articles are introduced at a frequent rate. Thus the number of new > items that > occur in the dataset has a very frequent churn and thus not necessarily > having any history. > Of course we need to recommend the latest item.
OK, but I'm still not seeing why all users need an update every time. Surely most of the 8.3M users aren't even active in a given day.
