Raghu Ramakrishnan is VP and Research Fellow at Yahoo! Research, where
he heads the Community Systems group.  He is on leave from the
University of Wisconsin-Madison, where he is Professor of Computer
Sciences, and was founder and CTO of QUIQ, a company that pioneered
question-answering communities such as Yahoo! Answers, and provided
collaborative customer support for several companies, including Compaq
and Sun. His research is in the area of database systems, with a focus
on data retrieval, analysis, and mining. He has developed scalable
algorithms for clustering, decision-tree construction, and itemset
counting, and was among the first to investigate mining of
continuously evolving, stream data. His work on query optimization and
deductive databases has found its way into several commercial database
systems, and his work on extending SQL to deal with queries over
sequences has influenced the design of window functions in
SQL:1999. His paper on the Birch clustering algorithm received the
SIGMOD 10-Year Test-of-Time award, and he has written the widely-used
text "Database Management Systems" (WCB/McGraw-Hill, with J. Gehrke),
now in its third edition.

He is Chair of ACM SIGMOD, on the Board of Directors of ACM SIGKDD and
the Board of Trustees of the VLDB Endowment, and has served as
editor-in-chief of the Journal of Data Mining and Knowledge Discovery,
associate editor of ACM Transactions on Database Systems, and the
Database area editor of the Journal of Logic Programming. Dr.
Ramakrishnan is a Fellow of the Association for Computing Machinery
(ACM), and has received several awards, including a Distinguished
Alumnus Award from IIT Madras, a Packard Foundation Fellowship, an NSF
Presidential Young Investigator Award, and an ACM SIGMOD Contributions
Award.