He is the Liem Sioe Liong/First Pacific Company professor in the Statistics department of The Wharton School at the University of Pennsylvania in Philadelphia, United States.
[1] Buja joined Center for Computational Mathematics (CCM) as a Senior Research Scientist in January 2020.
He graduated from the Swiss Federal Institute of Technology (ETHZ, Zurich) in 1980 with a PhD in Mathematics and Statistics, where his dissertation was supervised jointly by Frank Hampel, Peter J. Huber, and Hans Föllmer.
[4] Buja is a co-author of a data visualization system called XGobi, a predecessor of GGobi, for which Google provides more than 10,000 entries.
Results of his research have been discussed in multiple articles like : Science Daily,[6] Slate,[7] knowledge@wharton.