[Forum SIS] Seminar

[Simone Padoan]

Dear All,
We are glad to announce the following talk

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Thursday, February 27th, 2014, 
DEC - Statistics Seminar - Università Bocconi,
Room 3-E4-SR03, Via Rontgen 1 - 3rd floor
Time: 15:00pm

(The complete DEC seminars schedule is available at             
                  http://www.unibocconi.eu/statseminar)
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Speaker
Domenico Marinucci, Università degli Studi di Rima "Tor Vergata"

Title
The Geometry of Needlets Excursion Sets

Abstract
In this talk, we shall be concerned with geometric functionals and excursion probabilities for some nonlinear  transforms evaluated on wavelet/needlet components of spherical random fields. For such fields, we consider smoothed polynomial transforms, such as those arising from local estimates of angular power spectra and bispectra; we focus on the geometry of their excursion sets, and we study their asymptotic behaviour, in the high-frequency sense. We put particular emphasis on the analysis of Euler-Poincaré characteristics, which can be exploited to derive extremely accurate estimates for excursion probabilities. The present analysis is motivated by the statistical investigation of asymmetries and anisotropies in Cosmic Microwave Background radiation (CMB) data.



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Dr. Simone Padoan, PhD.
Assistant Professor

Department of Decision Sciences
Bocconi University of Milan
via Roentgen, 1 20136 Milano - Italy
tel. +39 02 5836 5368
Email: simone.padoan a unibocconi.it
Webpage: http://faculty.unibocconi.it/simonepadoan
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