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JEFFREY D. ULLMAN is the Stanford W. Ascherman Professor of Computer Science at Stanford University. He is the author or co-author of 16 books, including Elements of ML Programming (Prentice Hall 1998). His research interests include data mining, information integration, and electronic education. He is a member of the National Academy of Engineering, and recipient of a Guggenheim Fellowship, the Karl V. Karlstrom Outstanding Educator Award, the SIGMOD Contributions Award, and the Knuth Prize.
JENNIFER WIDOM is Associate Professor of Computer Science and Electrical Engineering at Stanford University. Her research interests include query processing on data streams, data caching and replication, semistructured data and XML, and data warehousing. She is a former Guggenheim Fellow and has served on numerous program committees, advisory boards, and editorial boards.
HECTOR GARCIA-MOLINA is the L. Bosack and S. Lerner Professor of Computer Science and Electrical Engineering, and Chair of the Department of Computer Science at Stanford University. His research interests include digital libraries, information integration, and database application on the Internet. He was a recipient of the SIGMOD Innovations Award and is a member of PITAC (President's Information-Technology Advisory Council).