there are a number of tricks right here that are I think not understood until this day for example the question is how do you sample these negative samples right right here this basically says get K words from your vocabulary at random according to this distribution right here now how are you going to do that basically you have a spectrum of options the one side of the spectrum is going to be completely uniform okay we sample each word with the same probability and the other side of the spectrum is something like sample this according to