components well we have learned one of them what you back in two lectures ago probably so just a recap on sip sip gram water back it's really simple so basically always trying to do is is trying to say given one was the world in a sentence I'm going to say that others other words in this sentence is more likely to occur than every other things in my corpus and in practice you wouldn't sum over all of your dictionary you would do some negative sampling to optimize this but essentially the end we saw this certain vector that described