Joseph M. Hellerstein (born ) is an American professor of Computer Science at the

University of California, Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California) is a public land-grant research university in Berkeley, California. Established in 1868 as the University of California, it is the state's first land-grant u ...

, where he works on

database system In computing, a database is an organized collection of data stored and accessed electronically. Small databases can be stored on a file system, while large databases are hosted on computer clusters or cloud storage. The design of databases span ...

s and

computer network A computer network is a set of computers sharing resources located on or provided by network nodes. The computers use common communication protocols over digital interconnections to communicate with each other. These interconnections are ...

s. He co-founded

Trifacta Trifacta is a privately owned software company headquartered in San Francisco with offices in Bengaluru, Boston, Berlin and London. The company was founded in October 2012 and primarily develops data wrangling software for data exploration and sel ...

with

Jeffrey Heer Jeffrey Michael Heer (born June 15, 1979) is an American computer scientist best known for his work on information visualization and interactive data analysis. He is a professor of computer science & engineering at the University of Washington, ...

and

Sean Kandel Sean Kandel is Trifacta's Chief Technical Officer and Co-founder, along with Joseph M. Hellerstein and Jeffrey Heer. He is known for the development of new tools for data transformation and discovery and is the co-developed of Data Wrangler, an i ...

in 2012, which stemmed from their research project, Wrangler.

Education

Hellerstein attended

Harvard University Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher le ...

from 1986 to 1990 (AB computer science) and pursued his master's degree in computer science at

from 1991 to 1992. He received his Ph.D., also in computer science, from the

University of Wisconsin, Madison A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United States, t ...

in 1995, for a thesis on

query optimization Query optimization is a feature of many relational database management systems and other databases such as NoSQL and graph databases. The query optimizer attempts to determine the most efficient way to execute a given query by considering the pos ...

supervised by Jeffrey Naughton and

Michael Stonebraker Michael Ralph Stonebraker (born October 11, 1943) is a computer scientist specializing in database systems. Through a series of academic prototypes and commercial startups, Stonebraker's research and products are central to many relational databa ...

Research

Hellerstein has made contributions to many areas of

s, such as ad-hoc sensor networks, adaptive query processing, approximate query processing and online aggregation, declarative networking, and data stream processing.

Awards and recognition

Hellerstein's work has been recognized with an Alfred P.

Sloan Fellowship The Sloan Research Fellowships are awarded annually by the Alfred P. Sloan Foundation since 1955 to "provide support and recognition to early-career scientists and scholars". This program is one of the oldest of its kind in the United States. ...

, MIT

Technology Review ''MIT Technology Review'' is a bimonthly magazine wholly owned by the Massachusetts Institute of Technology, and editorially independent of the university. It was founded in 1899 as ''The Technology Review'', and was re-launched without "The" in ...

's inaugural

TR100 The Innovators Under 35 is a peer-reviewed annual award and listicle published by ''MIT Technology Review'' magazine, naming the world's top 35 innovators under the age of 35. at ''Technology Review'' with lists of winners at technologyreview.com ...

list and TR10 list, Fortune 50 smartest in Tech, and three ACM-

SIGMOD SIGMOD is the Association for Computing Machinery's Special Interest Group on Management of Data, which specializes in large-scale data management problems and databases. The annual ACM SIGMOD Conference, which began in 1975, is considered one of ...

"Test of Time" awards. He is a Fellow of the

Association for Computing Machinery The Association for Computing Machinery (ACM) is a US-based international learned society for computing. It was founded in 1947 and is the world's largest scientific and educational computing society. The ACM is a non-profit professional member ...

(2009).

References

American computer scientists Database researchers Living people Harvard University alumni University of California, Berkeley alumni University of Wisconsin–Madison College of Letters and Science alumni Fellows of the Association for Computing Machinery UC Berkeley College of Engineering faculty Year of birth missing (living people) {{compu-scientist-stub