Joseph M. Hellerstein Scientist

Joseph M. Hellerstein (born (1968-06-07)7 June 1968) is professor of Computer Science at the University of California, Berkeley, where he works on database systems and computer networks. After receiving a bachelor's degree from Harvard University and a master's degree from UC Berkeley, he received his PhD from the University of Wisconsin, Madison in 1995, for a thesis on query optimization supervised by Jeffrey Naughton and Michael Stonebraker. He has made seminal contributions to many areas of database systems, such as ad-hoc sensor networks, adaptive query processing, approximate query processing and online aggregation, declarative networking, and data stream processing.His work has been recognized via awards including an Alfred P. Sloan Fellowship, MIT Technology Review's inaugural TR100 list, and two ACM-SIGMOD "Test of Time" awards. He is a Fellow of the Association for Computing Machinery (2009). Key ideas from his research have been incorporated into commercial and open-source database software released by IBM, Oracle Corporation, and PostgreSQL. He has also held industrial posts including Director of Intel Research Berkeley, and Chief Scientist of Cohera Corporation.