to model and kind of the set up since this is statistical method is we're going to observe a bunch of strings of language and the framing here with a probabilistic language model is we want to learn a function that can just compute the probability or density of new sentences so we want to be able to compute Oh what is the probability of the sentence is it going to rain today and we're just going to give it a bunch of strings and somehow we're going to design a model that can compute this quantity so what does it mean to compute