For those who didn't make it to WikiConference USA, you can watch everything that happened in the biggest auditorium on YouTube. (Don't forget the settings to play at higher speed—most people don't talk as fast as you can listen.)
While it isn't focused on Discovery, I found Andrew Lih's talk to be very interesting:
Links to the other National Archives recordings are on the schedule:
Other talks were also recorded, but not by the National Archives. I'm sure they'll pop up somewhere online eventually.
See more on machine learning as a service here:
—Trey
Trey Jones
Software Engineer, Discovery
Wikimedia Foundation