long vs as an int later. Also some small differences in calculated results. Now passing on sqlite and postgres!!
sqlite but does not (probably correctly) in postgres. Down to 2 failures with postgres (0 with sqlite)
running, but the issue needs more investigation
using pre-rated items and comparing against similar items that have already been stored
similar items over an entire rated item set
similarity (depending on what you pass in)
user, given a queryset of Ratings and a queryset of other users.
distance between two users over a RatedItem queryset. Based on O'Reilly 'Programming Collective Intelligence'.
of ordering by rating across generic relations.
RatedItems to be annotated nicely.