Yes, what he means is that item-item similarity is just a subset of what a recommender does. You can use an in memory rec based on item-item similarity and just ask it for those similarities.
On Thu, Sep 20, 2012 at 10:19 AM, yamo93 <[email protected]> wrote: > Exactly, but i need to improve perf and i thought that an in-memory impl > will be a solution (as mentionned in my first post). > > So Seb suggested to use recommender for that but i'm afraid he sent me on a > wrong way ... >
