The Institute for Statistics and Mathematics is pleased to invite you to the next research seminar, taking place on campus:

Sirio Legramanti(Department of Economics, University of Bergamo)
Leveraging Covariates in Bayesian Nonparametric Clustering: An Application to Transportation Networks
Wednesday, December 18, 2024, 17:30, in Building D4, Room D4.0.127.

Abstract:

In clustering, observed individual data are often accompanied by covariates that can assist the clustering process itself. This is the case, for example, of transportation networks, where each node has spatial coordinates, and it is often desirable that clusters of nodes are spatially cohesive. In fact, the obtained clusters may be used to inform public policy decisions, and it may be preferrable that such policies are uniform over neighboring areas. Naturally, depending on the application, different notions of closeness can be used to define such neighborhoods, thus potentially requiring proper transformations of the spatial covariates. Motivated by real-world data about the monthly subscriptions to the public transportation system of the Bergamo province (Italy), we show how to incorporate properly-transformed spatial covariates into a state-of-the-art stochastic block model, while allowing to weight the contribution of covariates.

(joint work with Valentina Ghidini and Raffaele Argiento)

We aim to stream all on-campus talks via Zoom. A direct link to the stream will be posted on our website.

For further information and the seminar schedule, please see:
www.wu.ac.at/en/statmath/research/resseminar