The Science Behind the Netflix Algorithms That Decide What You'll Watch Next | Underwire | Wired.com
Eric Barker stashed this in Entertainment
So they DON'T cross-correlate with likes on Facebook? Interesting...
Does Netflix keep track of my viewing?
Amatriain: We know what you played, searched for, or rated, as well as the time, date, and device. We even track user interactions such as browsing or scrolling behavior. All that data is fed into several algorithms, each optimized for a different purpose. In a broad sense, most of our algorithms are based on the assumption that similar viewing patterns represent similar user tastes. We can use the behavior of similar users to infer your preferences.