Virtual Seminar - Pratik Chaudhari

Thursday Jul 9, 2020, 10:30 AM → 12:00 PM America/New_York

Via Zoom

Bio: 
Pratik Chaudhari is an Assistant Professor in Electrical and Systems Engineering and Computer and Information Science at the University of Pennsylvania. He is a member of the GRASP Laboratory. From 2018--19, he was a Senior Applied Scientist at Amazon Web Services and a Postdoctoral Scholar in Computing and Mathematical Sciences at CalTech. Pratik received his PhD (2018) in Computer Science from UCLA, his Master's (2012) and Engineer's (2014) degrees in Aeronautics and Astronautics from MIT and his Bachelor’s degree (2010) from IIT Bombay. He was a part of nuTonomy Inc. (now Aptiv) from 2014--16.

Title: Learning with Few Labeled Data

Abstract: 
The relevant limit for machine learning is not N → infinity but instead N → 0, the human visual system is proof that it is possible to learn categories with extremely few samples. This ability comes from having seen millions of _other_ objects. The first part of the talk will discuss algorithms to adapt representations of deep neural networks to new categories given few labeled data. The second part will exploit a formal connection of thermodynamics and machine learning to characterize such adaptation and build stochastic processes that help explore the fundamental limits of representation learning. This theory leads to algorithms for transfer learning that can guarantee the classification performance on the target task.

This talk will discuss results from https://arxiv.org/abs/1909.02729, https://arxiv.org/abs/1710.11029 and https://arxiv.org/abs/2002.12406.