I think it would be extremely good to be able to recommend on items related to more recent preferences. That is, if the timestamps are provided.
On Mon, Dec 5, 2011 at 10:27 AM, Ted Dunning <ted.dunn...@gmail.com> wrote: > The downsampling should have a target size after sampling so that users > with that many or fewer ratings are not down-sampled at all. > > This is easy to do using reservoir sampling or anything similar. You can > also just keep the first or most recent ratings. Or you can use a sampler > biased toward either of those extremes. > > On Mon, Dec 5, 2011 at 12:20 AM, Daniel Zohar <disso...@gmail.com> wrote: > > > Another issue to take into account, is to try and not down-sample too > much > > so users with 1-2 preferences still get decent results. > > >
