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AI Lunchtime Seminar - Bethe Lectures, Professor Lenka Zdeborová, École Polytechnique Fédérale de Lausanne

Friday, March 15, 2024 at 12:15pm to 1:10pm

Bill and Melinda Gates Hall, 122
107 Hoy Rd, Ithaca, NY 14850

AI Lunchtime Seminar- Bethe Lectures, Professor Lenka Zdeborová, École Polytechnique Fédérale de Lausanne

Title: On Generalization and Uncertainty in Learning with Neural Networks

Host:  Thorsten Joachims

Abstract:  Statistical physics has studied exactly solvable models of neural networks for more than four decades. In this talk, Lenka Zdeborová will examine this work in the perspective of recent questions stemming from deep learning. She will describe several types of phase transitions that appear in the high-dimensional limit as a function of the amount of data. Discontinuous phase transitions are linked to adjacent algorithmic hardness. This so-called hard phase influences the behavior of gradient-descent-like algorithms. She will show a case where the hardness is mitigated by overparametrization, proposing that the benefits of overparametrization may be linked to the usage of a specific type of algorithm. She’ll then discuss the overconfidence of overparametrized neural networks and evaluate methods to mitigate it and calibrate the uncertainty.

Dial-In Information

Meeting ID: 973 2912 0563

Passcode: 543203

https://cornell.zoom.us/j/97329120563?pwd=MGlXa3RaL2tZSytEdDd3aEpmSHFBUT09

In addition to 122 Gates Hall, people can watch the Zoom in 700 Clark Hall.

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Event Type

Seminar

Departments

CHESS, LASSP, Applied and Engineering Physics, Astronomy, Physics, Computer Science, LEPP, CLASSE, Information Science

University Themes

Research

Tags

cascal, physics, WIP

Website

https://www.cs.cornell.edu/content/ge...

Contact E-Mail

kj37@cornell.edu

Contact Name

Kimberly Budd

Contact Phone

607-255-9124

Speaker

Lenka Zdeborova

Speaker Affiliation

Ecole Polytechnique Fedreale de Lausanne, Switzerland

Dept. Web Site

https://physics.cornell.edu/bethe-lectures

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