- CBMS Conference on Sparse Approximation and Signal Recovery Algorithms May 22-26, 2017
- IMA Public Lecture, Group Testing, March, 2017.
- University of Minnesota Applied Math Colloquium, March, 2017.
- IMA Workshop on Statistical Learning Theory, 2016.
- Algebraic and Spectral Graph Theory, BIRS, 2016.
- Plenary speaker, Mathematics and Image Analysis, Paris, January, 2016.
- Plenary speaker, Canadian Mathematical Society, Montreal, December, 2015.
- Lectures at summer school on Computational Harmonic Analysis, Univ.~of Maryland, July, 2015.
- Plenary speaker, International Biomedical and Astronomical Signal processing (BASP) Frontiers Workshop, Switzerland, 2015.
- Speaker, AIM Workshop on implications of the Kadison-Singer proof, California, 2014.
- Invited speaker, Strata+Hadoop industry conference on massive data, New York, 2014.
- International Congress of Mathematicians (ICM), Seoul, Korea, 2014.
- Applied Mathematics Colloquium, University of Colorado-Boulder, 2013.
- Boeing Applied Mathematics Seminar, University of Washington, 2013.
- Symposium Speaker on Big Data, National Academies of Science Kavli Frontiers of Science Symposium, Irvine, CA, 2012.
- Statistics and Computation Colloquium, University of Chicago, 2012.
- Invited speaker, ICALP 2012 Workshop on Group Testing, 2012.
- Invited speaker, Sensing and Analysis of High Dimensional Data (SAHD), Duke University, 2011.
- Plenary Speaker, Neural Information Processing Systems (NIPS), Granada Spain, December 2011.
- Plenary Speaker, Signal Processing with Adaptive Sparse Structured Representations (SPARS), St.~Malo, FRANCE, 2009.
- Applied Mathematics Seminar speaker, Department of Mathematics, Stanford University, October 2008.
- Speaker, Workshop on Sublinear Algorithms, Dagstuhl Germany, August 2008.
- Tutorial Presentation, SIAM Imaging Conference, San Diego, July 2008.
- Speaker, Mining Massive Data Sets, Stanford University, June 2008.
- Michigan Section of the MAA, Plenary talk, May 2008.
- Applied Mathematics Colloquium, Brown University, May 2008.
- Applied Mathematics Seminar, Vanderbilt University, April 2008.
- Applied Mathematics Colloquium, University of Pennsylvania, February 2008.
- Invited Speaker, Information Theory and its Applications (ITA), UC-San Diego, January 2008.
- Applied Mathematics Colloquium, Cornell University, September 2007.
- Speaker, Workshop on Multiscale Methods, Oberwolfach Germany, July 2007.
- Plenary speaker, von Neumann Symposium, Park City, Utah, 2007.
- Colloquium speaker, Program in Applied and Computational Mathematics, Princeton University, Princeton, NJ, 2006.
- Invited speaker, Sequences and Codes, IRMACS Centre, Simon Fraser University, Vancouver, BC, 2006.
- Invited speaker, Abel Symposium, Alesund, Norway, 2006.
- Colloquium speaker, Department of Applied Mathematics, Columbia University, New York, NY, 2006.
- Colloquium speaker, Department of Mathematics, Wayne State University, Detroit, MI, 2006.
- Colloquium speaker, Department of Computer Science, Harvard University, Boston, MA, 2005.
- Colloquium speaker, Departments of Mathematics and Statistics, Boston University, Boston, MA, 2005.
- Invited speaker, Sparse Representation in Redundant Systems Conference, Univ. of Maryland, College Park, MD 2005.
- Invited address, AMS Sectional Meeting, Newark, DE 2005.
- Invited speaker, Multiscale Geometry and Analysis in High Dimensions Conference, IPAM, Los Angeles, CA 2004.
- Plenary speaker, SIAM Annual Conference, San Diego, CA 2001.
- Invited speaker, Session on Internet Research As an Experimental Science, AAAS Annual Meeting, Anaheim, CA, January 1999.
- Invited speaker, SIAM Regional Meeting on Mathematics in Industry, Worcester, MA, May 1998.