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Caltech

CMX Lunch Seminar

Wednesday, April 19, 2023
12:00pm to 1:00pm
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Online Event
Mean field theory in Inverse Problems: from Bayesian inference to overparameterization of networks
Qin Li, Associate Professor of Mathematics, Department of Mathematics, UW-Madison,

rning areas, but they both deal with many particle systems. In sampling, one evolves a large number of samples (particles) to match a target distribution function, and in optimizing over-parameterized neural networks, one can view neurons particles that feed each other information in the DNN flow. These perspectives allow us to employ mean-field theory, a powerful tool that translates dynamics of many particle system into a partial differential equation (PDE), so rich PDE analysis techniques can be used to understand both the convergence of sampling methods and the zero-loss property of over-parameterization of ResNets. We showcase the use of mean-field theory in these two machine learning areas. 

For more information, please contact Jolene Brink by phone at (626)395-2813 or by email at [email protected] or visit Zoom Link.