Experience
Education
Bio
My research interests are in natural language processing, and machine learning. I completed a PhD in computer science from the University of Pennsylvania in December 1998. From January 1999 to November 2002 I was a researcher at AT&T Labs-Research, and from January 2003 until December 2010 I was an assistant/associate professor at MIT. I joined Columbia University in January 2011. I am also a research scientist at Google NYC.