http://www.youtube.com/watch?v=mjyBqkkIFLM&feature=relmfu
Yoav Freund's pubs:
http://cseweb.ucsd.edu/~yfreund/papers/index.html
Papers 1 and 11 are on the topic.
At around 46-47 minutes is a really cool visualization.




-- 
Lance Norskog
goksron@gmail.com