The demand for the machine learning conference growths dramatically. Here is a funny picture of
Alex Lebrun@lxbrun with a title "NIPS conference registrations, 2002 through 2017":
This year conference had 6000 attendees. Visitors need to stay in the registration queue for approx. 2 hours. But, maybe, thanks to that we have the ability to see the video from NIPS on the official NIPS FB page: https://www.facebook.com/nipsfoundation/.
I was really impressed by Peter Abeel keynote:
Also, here is a github repo with a lot of materials: https://github.com/hindupuravinash/nips2017/