Johannes Gehrke
My research lies in the design and implementation of scalable data-driven
systems. I currently work on three main topics: Scalability in computer games
and simulations, data
privacy, and applications
of database and data mining technology to the sciences. For more on my
research, go to the homepage of the Cornell Big Red Data Group.
Selected Recent
Publications

- Walker White, Christoph Koch, Johannes Gehrke, and Alan
Demers. Better
Scripts, Better Games. ACM Queue, Vol. 6, No. 7, November/December
2008. Also in Communications of the ACM 52(3): 42-47, March 2009.
- Ben Sowell, Alan J. Demers, Johannes Gehrke, Nitin
Gupta, Haoyuan Li, and Walker M. White: From Declarative Languages to
Declarative Processing in Computer Games. CIDR 2009.
- W. White, B. Sowell, J. Gehrke, and A. Demers: Declarative Processing for
Computer Games. In Proc. of the 2008 ACM SIGGRAPH Sandbox Symposium
(Sandbox 2008).
- Nitin Gupta, Alan J. Demers, and Johannes Gehrke: SEMMO: a scalable engine for
massively multiplayer online games. SIGMOD Conference 2008: 1235-1238
.
- Robert Albright, Alan J. Demers, Johannes Gehrke, Nitin
Gupta, Hooyeon Lee, Rick Keilty, Gregory Sadowski, Ben Sowell, and Walker
M. White: SGL: a scalable
language for data-driven games. SIGMOD Conference 2008: 1217-1222.
- David Martin, Johannes Gehrke, and Joseph Halpern. Toward Expressive and Scalable
Sponsored Search Auctions. ICDE Conference 2008. Cancun, Mexico, April
2008.
- Ashwin Machanavajjhala, Daniel Kifer, John Abowd,
Johannes Gehrke, and Lars Vilhuber. Privacy: From Theory to Practice
on the Map. ICDE Conference 2008. Cancun, Mexico, April 2008.
- Walker White, Christoph Koch, Nitin Gupta, Johannes
Gehrke, and Alan Demers. Database
Research Opportunities in Computer Games. SIGMOD Record,
September 2007.
- Nitin Gupta, Fan Yang, Alan Demers, Johannes Gehrke,
and Jayavel Shanmugasundaram. User-Centric Personalized
Extensibility for Data-Driven Web Applications (System Demo). SIGMOD
Conference 2007.
- Walker White, Alan Demers, Christoph Koch, Johannes
Gehrke, and Rajmohan Rajagopalan. Scaling Games to Epic Proportions.
SIGMOD Conference 2007: 31-42.
Full
list of my publications (from DBLP).
Awards
Selected Professional Activities
People
- PhD Students
- Postdocs: Marcos Vaz Salles, Xiaokui Xiao.
- Research Programmer: Manuel
Calimlim.
- Alumni:
- Philippe Bonnet (Research
Associate, 1999-2001). First employment: Associate Professor, Department
of Computer Science, University of Copenhagen.
- Zhiyuan Chen (Ph.D., August
2002; co-advised with Praveen Seshadri). First employment: Microsoft Research.
- Adina Crăiniceanu
(Ph.D., December 2005). First employment: Assistant Professor, United States Naval Academy.
- Abhinandan Das (Ph.D., August
2005). First employment: Google.
- Alin Dobra (Ph.D., July
2003). First employment: Assistant Professor, Department of Computer and Information
Science and Engineering, University of Florida.
- Alexandre Evfimievski
(Ph.D., August 2004). First employment: IBM Almaden Research Center.
- Dan Kifer (Ph.D.,
August 2006 and postdoc September 2006 to August 2007). First employment:
Yahoo! Research then Assistant
Professor, Department of Computer Science and Engineering, Penn State
University.
- Mingsheng Hong (Ph.D.,
November 2008). First employment: Vertica.
- Prakash Linga (Ph.D.,
June 2007, co-advised with Jayavel Shanmugasundaram). First employment: Moka5.
- Ashwin Machanavajjhala
(Ph.D., August 2008). First employment: Yahoo! Research.
- David Martin (Ph.D., August
2008; co-advised with Joe Halpern). First employment: Google.
- Tobias Mayr (Ph.D.,
August 2001; co-advised with Praveen Seshadri). First employment: IBM Almaden Research Center.
- Mirek Riedewald (Research
Associate, 2002-2008). First employment: Associate Professor, Department
of Computer Science, Northeastern.
- Biswanath Panda (Ph.D.,
February 2009). First employment: Google.
- Niki Trigoni (postdoc,
November 2002 to July 2004). First employment: Lecturer, School of Computer Science and
Information Systems, Birkbeck, University of London.
- Felix Weigel (postdoc,
January 2007 to February 2009). First employment: Nokia.
- Fan Yang (Ph.D., July 2008;
co-advised with Jayavel Shanmugasundaram). First employment: Google.
- Yong Yao (Ph.D., January 2007).
First employment: IBM Silicon Valley Lab.
Acknowledgments
My
research is partially supported by the National Science Foundation under Grants
IIS-0121175, IIS-0621438, and
CNS-0627680. Any
opinions, findings, and conclusions or recommendations expressed in this
material are those of the authors and do not necessarily reflect the views of
the sponsors.