I received the B.Tech. degree in Electrical Engineering from the Indian Institute of Technology, Bombay, in 1988, and the Ph.D. degree in Electrical and Computer Engineering from the University of Maryland, College Park, in 1997. My doctoral dissertation was supervised by Prof. Prakash Narayan and was titled Model Selection and Universal Data Compression.Since 1996, I have been on the faculty of the Johns Hopkins University. Until June 2001, I was an Associate Research Scientist in the Center for Language and Speech Processing and, from July 2001 to June 2008, an Assistant Professor in the Department of Electrical and Computer Engineering and the Department of Computer Science. I became an Associate Professor in July 2008.I am also affiliated with the Johns Hopkins University Human Language Technology Center of Excellence.In Fall 2000, I held a visiting appointment in the Institute for Mathematics and its Applications (IMA), University of Minnesota, Minneapolis, MN. I organized two IMA workshops on the role of mathematics in multimedia – “Mathematical Foundations of Speech Processing and Recognition,” and “Mathematical Foundations of Natural Language Modeling.”