The Three Faces of Bayes

Last summer, I was at a conference having lunch with Hal Daumé III when we got to talking about how “Bayesian” can be a funny and ambiguous term. It seems like the definition should be straightforward: “following the work of English mathematician Rev. Thomas Bayes,” perhaps, or even “uses Bayes’ theorem.” But many methods bearing the reverend’s name…

Encoding Human Thought Processes into a Computer

One of my favorite characters in William Gibson’s Neuromancer was a so-called “psychological construct” named The Dixie Flatline. Dixie wasn’t a person, really, but an emulation of a famous computer hacker named McCoy Pauley (based on a brain scan that was made before he died). As he — or, it — said in a conversation with the novel’s protagonist…