This lecture is very hard to understand for the novice. You also get the sense that the lecturer is jumping all over the place with no clear transition between his subject areas.<br><br>If you are new to machine learning and its mathematical theories, do a quick review of the lecture, try to understand the major approaches to unsupervised deep learning. Then look for other video lectures that do a better job explaining these concepts to novices and beginners.,(reply>), And that's why different talks are aimed to different audiences. It's called prerequisites. A specialized talk about quantum mechanics would not start with linear algebra lessons.,(reply>), I agree with +dvdbos. While it is good to provide accessible content for newcomers, there also needs to be educational material for working practitioners, like this one.,(reply>), Hard for the novice, but very insightful for the trained ones! I found it really interesting and well conducted.