It's probably worth pointing out that this project has no relation to Infer.NET (I don't think so, anyway), another machine learning library from Microsoft Research and written in F#.
i used Infer.NET: buggy as anything, horrible syntax.
it's for doing inference in graphical models using EP; these are the same techniques as those MS use for trueskill.
this (Infer) looks like it's for a different kind of inference: classification (essentially linear, but with a few bells and whistles).
(not graphical models right now; probabilities.clj is very much lacking.)