See https://github.com/tdunning/in-memory-cooccurrence for an in-memory implementation.
Should just require three or so lines of code. On Fri, Jun 21, 2013 at 11:23 AM, Sebastian Schelter <[email protected]> wrote: > > Not that it much matters, I tend to filter out user x item entries based > on > > the item *and* the user prevalence. This gives me a nicely bounded > number > > of occurrences for every user and every item. > > I'd be interested in implementing this. Can you share a few more > details? Having another pass that counts item frequencies shouldn't hurt > much. > > Best, > Sebastian > >
