namely there are as many classes as you have words in the dictionary so each word in the dictionary will have a class associated with it right so an image nets you have like a thousand classes but in these and that's already a lot but in these tasks you're gonna have a hundred thousand classes because there are a hundred thousand words in the English language that you wanna want to treat and there are many more but in this case they leave away all the words that appear less than five times in their corpus that's still a lot of words