On Fri, Dec 4, 2009 at 6:04 PM, Jake Mannix <[email protected]> wrote: > How would you do this? Take the rows of v_i cross v_i and add them > up? Isn't that another MR job?
No I suppose I meant take each row of A'A, one at a time, and dot with h. That's computing the recommendation vector with only one row in memory at a time.
