They're implicitly zero as far as the math goes IIRC
On Sun, Apr 29, 2012 at 10:45 PM, Daniel Quach <[email protected]> wrote: > ah sorry, I meant in the context of the SVDRecommender. > > Your earlier email mentioned that the DataModel does NOT do any subtraction, > nor add back in the end, ensuring the matrix remains sparse. Does that mean > it inserts zero values?
