labels and the upper part does not have the labels so that's semi-supervised learning it's often the case when it's very expensive to get labels so you can only get labels for a couple of images in your data set but very often in semi-supervised learning you still assume it's the same data set there is a slightly different setup here that's called transfer learning so in transfer learning what you'll have is you'll have your data set that has the labels but it's very small so you'll notice i've drawn it smaller