As an explanation for why there have been no posts in a long time, I’m now working on the Growth and Engagement team at Facebook. I’m on a small subteam that is tasked with creating metrics to enable us to directly compare and contrast user experience across the various platforms, such as web and mobile. Facebook has over 1B active users, and relies heavily on machine learning for a wide variety of tasks. Thus, for someone interested in ubiquitous machine learning (e.g., me), I can’t think of a better place to be. It’s a lot of fun, but has also kept me extremely busy.