John Riedl has been a member of the faculty of the computer science department of the University of Minnesota since March 1990. In 1992, he cofounded the GroupLens Research project on collaborative information filtering and has been codirecting it since its inception. In 1996, he cofounded Net Perceptions to commercialize GroupLens. Net Perceptions was the leading recommender systems company during the Internet boom. In 1999, Riedl and other Net Perceptions cofounders shared the MIT Sloan Schools E-Commerce Technology Award. Riedl received a bachelors degree in mathematics from the University of Notre Dame in 1983. He earned a masters degree in computer science in 1985 and a doctorate in computer science in 1990 from Purdue University. He is presently a professor at the University of Minnesota.