Computer Science

Computer Science Seminar: Dr. Alexandra Kolla


Computer Science Seminar: Dr. Alexandra Kolla

Host: Dave Doty

When: Thursday, February 23rd at 3:10pm

Where: 1131 Kemper Hall

Title: “The sound of graphs.”

Abstract: In this talk, I will discuss major implications that linear algebraic techniques have in understanding and resolving hard computational and graph theoretical questions, as well as unifying various areas of mathematics and computer science. I will focus on two representative examples, stemming from two key areas of computer science, namely Computational Complexity and robust Network Design respectively:
(1) Resolving the infamous Unique Games Conjecture and its implications to the theory of inapproximability.
(2) Constructing optimal expander graphs, and its implications to fault tolerant network design and clustering.
I will show how, via the prism of spectral graph theory, those seemingly unrelated questions can be seen to be deeply connected. I will present techniques I developed to tackle both problems, which span a wide range of areas such as linear algebra, convex optimization, group theory, harmonic analysis, and probability theory.
Bio: I am an assistant professor at the Computer Science Department at UIUC. I was a Simons Institute fellow for the academic year 2013-2014. I got my PhD at U.C Berkeley, then did a postdoc at the Institute for Advanced Study and at Microsoft Research. My research focuses on theoretical computer science and specifically spectral graph theory and its applications.

Location
1131 Kemper Hall

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