I have tested upto 3 billion. ALS scales, you just need to scale your cluster accordingly. More than building the model, it's getting the final recommendations that won't scale as nicely, especially when number of products is huge. This is the case when you are generating recommendations in a batch mode and shouldn't affect if the model is used to recommend in a real time/online mode.
Regards Sab On 26-Feb-2016 6:53 am, "Roberto Pagliari" <roberto.pagli...@asos.com> wrote: > Does anyone know about the maximum number of ratings ALS was tested > successfully? > > For example, is 1 billion ratings (nonzero entries) too much for it to > work properly? > > > Thank you, >
