Given that it is David Blei, it is almost certainly a variant of topic modeling:
http://www.cs.princeton.edu/~blei/topicmodeling.html On Sun, May 8, 2011 at 6:30 PM, Benson Margulies <[email protected]>wrote: > The April 30 economist has a layperson's description of what looks > like an interesting topic clustering system by Blei of Princeton and > Lafferty of CMU. Anyone know anything about it? >
