[Forum SIS] Politecnico di Milano, seminario B. Scarpa

[Laura M. Sangalli]

Si avvisa che in data 25-01-2012, alle ore 14:45 precise,
presso Aula Seminari F. Saleri VI Piano MOX - Dipartimento di 
Matematica, Politecnico di Milano,
nell'ambito delle iniziative MOX e del progetto FIRB Futuro in Ricerca 
SNAPLE (http://mox.polimi.it/~sangalli/firb.html), si svolgerà il 
seguente seminario:

Relatore:
Bruno Scarpa,
Dipartimento di Scienze Statistiche, Università degli Studi di Padova

Titolo:
Enriched Stick Breaking Processes for Functional Data

Abstract:
In many applications involving functional data, prior information is 
available about the proportion of curves having different attributes. It 
is not straightforward to include such information in existing 
procedures for functional data analysis. Generalizing the functional 
Dirichlet process (FDP), we propose a class of stick-breaking priors for 
distributions of functions. These priors incorporate functional atoms 
drawn from a Gaussian process. The stick-breaking weights are specified 
to allow user-specified prior probabilities for curve attributes, with 
hyperpriors accommodating uncertainty. Compared with the FDP, the random 
distribution is enriched for curves having attributes known to be 
common. Theoretical properties are considered, methods are developed for 
posterior computation, and the approach is illustrated using data on 
temperature curves in menstrual cycles.


Tutti gli interessati sono invitati a partecipare.


Cordiali saluti,
Laura Sangalli


-- 
Laura Maria Sangalli
MOX - Dipartimento di Matematica
Politecnico di Milano
Piazza Leonardo da Vinci 32
20133 Milano - Italy
tel: +39 02 2399 4554
fax: +39 02 2399 4568
email: laura.sangalli at polimi.it
url: http://mox.polimi.it/~sangalli