words and you might also want to like clip because you might have like extremely long tail frequency distributions and things like that so but at the other day you just have there your ID WJ and you had some bias terms and you're just trying to compare that to the log of the rock codes count so this allows us to go from that giant m by m matrix which might be a million by a million to an M by n matrix where there's M words and each is an N dimensional vector and often this turns out that these can approximate that full