Dear all,
we are glad to announce the following hybrid seminar

February 27, 2024,  12:15 PM

Where: Sala Riunioni B - edificio Zeta (Campus Scientifico), Via Torino, 155 Mestre (Venice, Italy)

             Zoom:https://unive.zoom.us/j/85153268624?pwd=MzBhdlA2M1B2dThJQ2Y5T0EwUE5PZz09

Speaker: Federico Ferraccioli, Università degli Studi di Padova

Title: Detecting stable modes using stochastic gradients


Abstract:

In the framework of density based clustering, modes represent a crucial concept as they identify high-density regions that can be associated to different groups of observations. The possibility to conduct inference on the resulting clusters remains nonetheless an intriguing yet quite intricate problem. To tackle this challenge, we propose a procedure that leverages on the connection between mean-shift clustering and stochastic gradient methods. This enables the definition of a sampling procedure, which can be used to construct confidence regions for the modes of a density. We investigate the asymptotic properties of the proposed method and evaluate its performances across different scenarios.

Best regards,

Carlo Gaetan

-- 
- 
Dipartimento di Scienze Ambientali, Informatica e Statistica - DAIS
Università Ca' Foscari - Venezia
Z.A12 - Edificio Zeta 
Via Torino, 155
I-30172 Mestre (VE)
ITALY

phone: ++39  041 234 8404 
           
e-mail:[gaetan"at"unive"dot"it]
web:[http://www.dais.unive.it/~gaetan]


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