Slides of the optional Pytorch lecture

My apologies, that took a bit longer than I wanted, but I added the link to the slides in the calendar now. Anyways, here it is again too: https://docs.google.com/presentation/d/139mKvUb4tLjHj0NlCVAmgFvl39MASgY2MFrAZdBM9_k/edit?usp=sharing