a relatively simple procedure they can do for any symbol table that you have and it relies on these probabilities and you might already start foreshadowing here chorus this is what your narrative models might be handy very good generative models might allow us to build good probability estimates that we can then use to find a real good encoding because of course if these probabilities are wrong then this tree will not be a very good tree for encoding the data so here's the same another example that you can work