Joseph M. Hellerstein

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Joseph M. Hellerstein
Joseph M. Hellerstein.jpg
Born (1968-06-07) 7 June 1968 (age 50)[1]
Alma materHarvard University (B.S.)

University of California, Berkeley (M.S.)

University of Wisconsin–Madison (PhD)
Scientific career
FieldsComputer Science
InstitutionsUniversity of California, Berkeley
Doctoral advisorJeffrey Naughton, Michael Stonebraker
Doctoral studentsSam Madden

Joseph M. Hellerstein (born (1968-06-07)7 June 1968[1]) is professor of Computer Science at the University of California, Berkeley, where he works on database systems and computer networks. He co-founded Trifacta with Jeffrey Heer and Sean Kandel in 2012, which stemmed from their research project, Wrangler.[2]


Hellerstein attended Harvard University from 1986-1990 and pursued his masters in Computer Science at University of California Berkeley from 1991-1992.

Ph.D Studies and Research[edit]

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,[3][4] adaptive query processing,[5] approximate query processing and online aggregation,[6] declarative networking, and data stream processing.[7]

Awards and recognition[edit]

His work has been recognized via awards including an Alfred P. Sloan Fellowship, MIT Technology Review's inaugural TR100 list and TR10 list,[8] Fortune 50 smartest in Tech,[9] and three ACM-SIGMOD "Test of Time" awards.[10] He is a Fellow of the Association for Computing Machinery (2009).[11] 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 Labs, and Chief Scientist of Cohera Corporation.


  1. ^ a b Library of Congress (1998-07-06). "Hellerstein, Joseph M., 1968-". Library of Congress Name Authority File. Retrieved on 2011-12-15 from
  2. ^ "Data Wrangler". Retrieved 2016-01-20.
  3. ^ Madden, S.; Franklin, M. J.; Hellerstein, J. M.; Hong, W. (2002). "TAG". ACM SIGOPS Operating Systems Review. 36: 131. doi:10.1145/844128.844142.
  4. ^ Madden, S.; Franklin, M. J.; Hellerstein, J. M.; Hong, W. (2003). "The design of an acquisitional query processor for sensor networks". Proceedings of the 2003 ACM SIGMOD international conference on Management of data - SIGMOD '03. p. 491. doi:10.1145/872757.872817. ISBN 158113634X.
  5. ^ Avnur, R.; Hellerstein, J. M. (2000). "Eddies". ACM SIGMOD Record. 29 (2): 261. doi:10.1145/335191.335420.
  6. ^ Hellerstein, J. M.; Haas, P. J.; Wang, H. J. (1997). "Online aggregation". ACM SIGMOD Record. 26 (2): 171. doi:10.1145/253262.253291.
  7. ^ Chandrasekaran, S.; Shah, M. A.; Cooper, O.; Deshpande, A.; Franklin, M. J.; Hellerstein, J. M.; Hong, W.; Krishnamurthy, S.; Madden, S. R.; Reiss, F. (2003). "TelegraphCQ". Proceedings of the 2003 ACM SIGMOD international conference on Management of data - SIGMOD '03. p. 668. doi:10.1145/872757.872857. ISBN 158113634X.
  8. ^ Naone, Erica. "TR10: Cloud Programming - MIT Technology Review". MIT Technology Review. Retrieved 2016-02-01.
  9. ^ "The 50 smartest people in tech". Fortune. Retrieved 2016-02-01.
  10. ^ 2013 The Design of an Acquisitional Query Processor for Sensor Networks. Samuel Madden, Michael J. Franklin, Joseph M. Hellerstein, Wei Hong
  11. ^