[Sds-seminars] S&DS Seminar via Zoom : Lénaïc Chizat, 11/01 @ 4pm-5pm, "Analysis of gradient descent on wide two-layer ReLU neural networks"
elizavette.torres at yale.edu
elizavette.torres at yale.edu
Wed Oct 27 10:59:58 EDT 2021
<https://statistics.yale.edu/> Department of Statistics and Data Science
You are invited to a scheduled Zoom Seminar
LÉNAÏC CHIZAT, EPFL
Monday, November 01, 2021
4:00PM to 4:45PM
Zoom: https://yale.zoom.us/j/99169700816?pwd=SWEvWHI5d3dPNVdHMkZMZURMWWJPUT09
Password: 24
<https://lchizat.github.io/> Website
Title: Analysis of gradient descent on wide two-layer ReLU neural networks
Information and Abstract:
In this talk, we propose an analysis of gradient descent on wide two-layer ReLU neural networks that leads to sharp characterizations of the learned predictor. The main idea is to study the training dynamics when the width of the hidden layer goes to infinity, which is a Wasserstein gradient flow. While this dynamics evolves on a non-convex landscape, we show that for appropriate initializations, its limit, when it exists, is a global minimizer. We also study the implicit regularization of this algorithm when the objective is the unregularized logistic loss, which leads to a max-margin classifier in a certain functional space. We finally discuss what these results tell us about the generalization performance, and in particular how these models compare to kernel methods.
Zoom is Yale’s audio and visual conferencing platform.
Topic: Yale S&DS Department Seminar
Time: 4:00pm - 5:00pm
Join from PC, Mac, Linux, iOS or Android: <https://yale.zoom.us/j/99169700816?pwd=SWEvWHI5d3dPNVdHMkZMZURMWWJPUT09> https://yale.zoom.us/j/99169700816?pwd=SWEvWHI5d3dPNVdHMkZMZURMWWJPUT09
Password: 24
Or Telephone:203-432-9666 (2-ZOOM if on-campus) or 646 568 7788
Meeting ID: 991 6970 0816
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Department of Statistics and Data Science
Yale University
24 Hillhouse Avenue
New Haven, CT 06511
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