Next Talk

Speaker: Carlos Fernandez-Granda
Title: From Seismology to Compressed Sensing and Back, a Brief History of Optimization-Based Signal Processing
Date and time: October 7, 1:00 p.m. (light refreshments at 12:45 p.m.)
Venue: WWH 1302

Abstract

In this talk we provide an overview of the history of l1-norm minimization applied to underdetermined inverse problems. In the 70s and 80s geophysicists proposed using l1-norm minimization for deconvolution from bandpass data in reflection seismography. In the 2000s, inspired by this approach and by magnetic resonance imaging, a method to provably recover sparse signals from random projections, known as compressed sensing, was developed. Theoretical insights used to analyze compressed sensing have recently been adapted to understand the potential and limitations of l1-norm minimization for deterministic problems. These include super-resolution from low-pass data and the deconvolution problem that originally motivated the geophysicists.

About this seminar

This seminar is meant to benefit young mathematicians, particularly graduate students and postdocs.
It aims to accomplish the following: The research talks should be fairly introductory and accessible to students and non-specialists in the audience.

Schedule Fall 2016

October 7

Speaker: Carlos Fernandez-Granda
Title:From Seismology to Compressed Sensing and Back, a Brief History of Optimization-Based Signal Processing
Abstract

October 28

Speaker: John Rinzel
Title:TBA
Abstract

November 4

Speaker: Scott Armstrong
Title:TBA
Abstract

November 18

Speaker: Nan Chen
Title:TBA
Abstract

Contact Info

If you would like to give a talk or ask a question about the seminar, please contact one of the seminar organizers:

Alexisz Gaalgaal [at] cims [dot] nyu [dot] edu
Reza Gheissarireza [at] cims [dot] nyu [dot] edu

Previous semesters

Spring 2016 schedule

Fall 2015 schedule

Spring 2015 schedule

Fall 2014 schedule

Spring 2014 schedule

Fall 2013 schedule

Spring 2013 schedule

Fall 2012 schedule

Spring 2013 schedule

Fall 2011 schedule

Spring 2011 schedule

Descriptions of earlier talks are here.

Department of Mathematics
Courant Institute of Mathematical Sciences
New York University
251 Mercer St.
New York, NY 10012