I believe you need to aggregate inputs per user-item in your call. I am actually not sure what happens if you don't. I think it would compute the factors twice and one would win, so yes I think it would effectively be ignored. For implicit, that wouldn't work correctly, so you do need to aggregate.
On Mon, Feb 15, 2016 at 8:30 PM, Roberto Pagliari <roberto.pagli...@asos.com> wrote: > What happens when duplicate user/ratings are fed into ALS (the implicit > version, specifically)? Are duplicates ignored? > > I’m asking because that would save me a distinct. > > > > Thank you, > --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org
