Week of February 5, 2023

Mon Feb 6, 2023
12:00pm - zoom - Probability and Analysis Webinar
Ambar Sengupta - (University of Connecticut)
TBA

https://sites.google.com/view/paw-seminar

Tue Feb 7, 2023
1:00pm to 2:00pm - RH 440R - Dynamical Systems
Anton Gorodetski - (UC Irvine)
Selected open problems in dynamical systems

We will go over a series of open problems in dynamical systems, some of them are the problems that are being addressed by the current participants of the seminar, and some are new. 

Wed Feb 8, 2023
2:00pm to 3:00pm - 510R Rowland Hall - Combinatorics and Probability
Ioana Dumitriu - (UCSD)
Community detection in hypergraphs

The Hypergraph Stochastic Block Model (HSBM) is a complex, many-parameter model generalizing the well-known graph SBM--a paradigm for studying community detection. One of the main uses of the (H)SBM is that it allows us to develop guarantees for community detection algorithms by providing thresholds---parameter conditions that theoretically describe the necessary and sufficient requirements for community detection in the model. These thresholds naturally depend on the type of recovery desired.

I will talk about the most general conditions and thresholds we can develop, under various tweaks in the model, for almost exact and exact recovery in more, or less, general HSBM. This is joint work with Haixiao Wang and Yizhe Zhu. 

Fri Feb 10, 2023
1:00pm - DBH 1200 - Graduate Seminar
Qing Nie - (UC Irvine)
TBA