I said semi-supervised learning we'll talk a little bit about that and and the way to achieve this is doing kind of quite a natural combination of two of two previously known methods which will which will describe so what is semi-supervised learning the motivation for semi-supervised learning is that labeling can there are situations where labeling is very expensive but raw data can be very cheap like for example if you're driving around with the video camera and the thing to understand about the semi-supervised learning is that it