Professor and Associate Head, Department of Computer SciencePurdue University

Associate Director, Health Data Science, Regenstrief Center for Healthcare Engineering (RCHE)


Ph.D/M.Phil./M.Sc. in Computer Science (May 2003), Computer Science Department, Yale University
BS/M.Sc. in Computer Engineering (July 1997), Computer Engineering and Informatics Department, University of Patras

Research Interests

Randomized Numerical Linear Algebra (RandNLA) & its applications to genomic data analysis

Links: Wikipedia, Google Scholarshort biofull CV.

Chcek out this great introductory video and blog for RandNLA by DJ Rich of TrueTheta.

Randomization in Numerical Linear Algebra made a cameo appearance in Netflix's hit series 'The Lincoln Lawyer'!  Watch this short clip from Season 1, Episode 3 (disclaimer). Michael Mahoney and I coined this term in late 2011 and the first workshop on Randomized Numerical Linear Algebra (RandNLA) was held during FOCS 2012 (check the Nuit Blanche and My Biased Coin blog posts for details).


May '24: Commencing July 1st, I will assume the role of Department Head for the Department of Computer Science at Purdue University.

May '24: Slides from my talk at the SIAM Conference on Applied Linear Algebra (LA24).

Mar '24: Congratulations to Gregory Dexter for successfully defending his thesis. Gregory will join Linkedin as Senior Research Scientist.

Feb '24: Dr. Myson Burch (PhD Purdue CS '23) discussing how to build tools that shape the future of health science.

Jan '24: Semester-long program on "Stochastic and Randomized Algorithms in Scientific Computing: Foundations and Applications" at ICERM, Brown University, in Spring 2026. Co-organized with: Harbir AntilJulianne ChungYoussef M Marzouk; Agnieszka MiedlarArvind Saibaba.

Jan '24: 2024 Gene Golub SIAM Summer School (G2S3) on Iterative and Randomized Methods for Large-Scale Inverse Problems:

Previous years: 2023; 2022; 2021; 2020; 2019201820172006-2016.