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No Free Lunch Seminar by Roberto Casarin, Thu July 2 1:00 PM Aula Bianchi @ SNS
by Giacomo Bormetti 19 Jun '15

19 Jun '15

Dear all, Thu Jul 2 2015, 1:00 PM in Aula Bianchi, Scuola Normale Superiore Pisa Roberto Casarin Department of Economics - Università Ca' Foscari di Venezia will deliver the seminar "Bayesian Nonparametric Calibration and Combination of Predictive Distributions" Abstract: We introduce a Bayesian approach to predictive density calibration and combination that accounts for parameter uncertainty and model set incompleteness through the use of random calibration functionals and random combination weights. Building on the work of Ranjan and Gneiting (2010) and Gneiting and Ranjan (2013), we use infinite beta mixtures for the calibration. The proposed Bayesian nonparametric approach takes advantage of the flexibility of Dirichlet process mixtures to achieve any continuous deformation of linearly combined predictive distributions. The inference procedure is based on Gibbs sampling and allows accounting for uncertainty in the number of mixture components, mixture weights, and calibration parameters. The weak posterior consistency of the Bayesian nonparametric calibration is provided under suitable conditions for unknown true density. We study the methodology in simulation examples with fat tails and multimodal densities and apply it to density forecasts of daily S&P returns and daily maximum wind speed at the Frankfurt airport. Joint work with Federico Bassetti and Francesco Ravazzolo. All interested people are kindly invited. Best, Giacomo -- Giacomo Bormetti Assistant Professor of Financial Mathematics -------------------------- Faculty of Mathematical and Natural Sciences Scuola Normale Superiore Pisa Piazza dei Cavalieri, 7 56126 Pisa - Italy email: giacomo.bormetti(a)sns.it http://mathfinance.sns.it/index.php/people/41-group-members/51-giacomo-borm… phone: +39 050 509248

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Bando concorso II fascia-SECS-S/06 Bologna (fwd)
by Tiziano Vargiolu 19 Jun '15

19 Jun '15

---------- Forwarded message ---------- Date: Thu, 18 Jun 2015 15:01:45 +0000 From: Sabrina Mulinacci <sabrina.mulinacci(a)unibo.it> Subject: Bando concorso II fascia-SECS-S/06 Bologna Carissimi, segnalo che il Dipartimento di Scienze Statistiche "Paolo Fortunati" dell'Universit? Bologna ha bandito un posto di II fascia (ex art.18) nel Settore Concorsuale: 13/D4 - METODI MATEMATICI DELL'ECONOMIA E DELLE SCIENZE ATTUARIALI E FINANZIARIE- SSD: SECS-S/06 - con sede di servizio Rimini. Tutti gli interessati possono trovare tutti i dettagli e la relativa documentazione al link http://www.stat.unibo.it/it/dipartimento/documentazione-per-procedure-ex-ar… Un caro saluto a tutti Sabrina Mulinacci

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Bando concorso II fascia-SECS-S/06 Bologna
by Sabrina Mulinacci 19 Jun '15

19 Jun '15

Carissimi, segnalo che il Dipartimento di Scienze Statistiche "Paolo Fortunati" dell'Università Bologna ha bandito un posto di II fascia (ex art.18) nel Settore Concorsuale: 13/D4 - METODI MATEMATICI DELL'ECONOMIA E DELLE SCIENZE ATTUARIALI E FINANZIARIE- SSD: SECS-S/06 - con sede di servizio Rimini. Tutti gli interessati possono trovare tutti i dettagli e la relativa documentazione al link http://www.stat.unibo.it/it/dipartimento/documentazione-per-procedure-ex-ar… Un caro saluto a tutti Sabrina Mulinacci

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SEMINARI CONGIUNTI DI PROBABILITA' - ROMA1 E ROMA3
by Faggionato, Alessandra 19 Jun '15

19 Jun '15

MERCOLEDI' 24 GIUGNO, PRESSO IL DIPARTIMENTO DI MATEMATICA DELLA SAPIENZA, VI SARANNO 2 SEMINARI DI PROBABILITA', CO-ORGANIZZATI DA ROMA1 E ROMA3. Riporto sotto i dettagli Grazie per l'attenzione Alessandra Faggionato Mercoledi' 24 Giugno, ore 14:30 Aula Picone, Dipartimento di Matematica (La Sapienza) Seminario congiunto di Probabilita' (Roma1 e Roma 3) Speaker: Vittoria Silvestri (Cambdrige) Title: Fluctuation results for Hastings-Levitov planar growth Abstract: In 1998 the physicists Hastings and Levitov introduced a family of continuum models to describe a range of physical phenomena of planar aggregation/diffusion. These consist of growing random clusters on the complex plane, which are built by iterated composition of random conformal maps. It was shown by Norris and Turner (2012) that in the case of i.i.d. maps the limiting shape of these clusters is a disc: in this talk I will show that the fluctuations around this shape are given by a random holomorphic Gaussian field F on {|z| > 1}, of which I will provide an explicit construction. When the cluster is allowed to grow indefinitely, I will show that the boundary values of F converge to a distribution-valued Fractional Gaussian Field on the unit circle, which is log-correlated, and critical in a sense that I will explain. **************************************************************************************************************** Mercoledi' 24 Giugno, ore 15:30 Aula Picone, Dipartimento di Matematica (La Sapienza) Seminario congiunto di Probabilita' (Roma1 e Roma 3) Speaker: Oriane Blondel (Lione) Title: Random walk on the East model (and other environments with spectral gap) Abstract: The East model is a one-dimensional interacting particle system with non attractive spin-flip dynamics. In the physics literature, it is a key example of a model with glassy features. Here we take this model as a random environment and investigate the behaviour of a random walk whose jump rates depend on the current configuration. The analysis relies on general results established for random walks in random environment when the environment is Markovian with positive spectral gap. Joint work with Luca Avena and Alessandra Faggionato. -- Prof. Alessandra Faggionato Department of Mathematics University La Sapienza Piazzale A. Moro, 2 00186 Rome - Italy

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Avviso di seminario :: Yangxin Huang@DSS (Scienze Statistiche, Sapienza)
by Pierpaolo Brutti 18 Jun '15

18 Jun '15

----------------------------------------------------------------------------- A v v i s o d i S e m i n a r i o ----------------------------------------------------------------------------- Giovedì 25 Giugno, ore 11:00am ----------------------------------------------------------------------------- Stanza 34 Dipartimento di Scienze Statistiche Sapienza Università di Roma YANGXIN HUANG (University of South Florida, Tampa, FL, USA) terrà un seminario dal titolo BAYESIAN APPROACH ON MIXTURE OF JOINT MODELS FOR SURVIVAL AND LONGITUDINAL DATA WITH MULTIPLE FEATURES tutti gli interessati sono invitati a partecipare. ----------------------------------------------------------------------------- Maggiori informazioni sui seminari presso il DSS sono consultabili a quest'indirizzo: http://goo.gl/Y6OQYm Saluti Pierpaolo Brutti -- ___________________________________________ INVESTI SUL FUTURO, FAI CRESCERE L’UNIVERSITÀ: *DONA IL 5 PER MILLE ALLA SAPIENZA* CODICE FISCALE *80209930587*

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MAF 2016 at the University Paris-Dauphine
by Marco Corazza 17 Jun '15

17 Jun '15

Seventh international conference *MAF 2016 - Mathematical and Statistical Methods for Actuarial Sciences and Finance* *WHEN and WHERE* The Conference will be held from March 30 to April 1, 2016 at the University Paris-Dauphine, in Paris (France). *ORGANIZERS* - Department Master in Sciences of Organizations - University Paris-Dauphine, Paris (France) - Department of Economics - Ca' Foscari University of Venice, Venice (Italy) *AIM* The aim of the Conference is to present theoretical and methodological results, and significant applications in Actuarial Sciences, Insurance and Finance by means of the capabilities of the interdisciplinary mathematical-statistical approach. *DEADLINES* Interested people should submit an abstract (no more than two pages) within December 1, 2015. Proposals should be submitted electronically through the website: http://maf2016-paris.dauphine.fr/. Contributors will be notified the acceptance of their proposals by January 11, 2016. Then, a paper should be submit for publication (detailed information will follow). *TOPICS* (This list is only indicative) Actuarial models; Models for financial derivatives; Analysis of high frequency financial data; Multivariate techniques for financial market analysis; Behavioral finance; Carbon and green finance; Optimization in insurance; Credit risk methods and models; Pricing; Dynamic optimization in finance; Real world finance; Forecasting of dynamical actuarial and financial phenomena; Risk management ; Solvency analysis; Fund performance evaluation; Sovereign risk; Insurance portfolio risk analysis; Static and dynamic portfolio selection and management; Interest rate models; Longevity risk; Trading systems; Machine learning and soft-computing in finance; Volatility models; Management in insurance business; Models and methods for financial time series analysis. *PUBLICATIONS* A selection of accepted papers will be published: in a volume edited by an international publisher; in a special issue of the international journals "Mathematical Methods in Economics and Finance". *CONTACTS* E-mail: maf2016(a)dauphine.fr. -- Marco Corazza Department of Economics Ca' Foscari University of Venice San Giobbe, Cannaregio 873 30121 Venezia, Italy Mobile: (+39) 366 602-9134 Phone: (+39) 041 234-6921 Fax: (+39) 041 234-7444 E-mail: corazza(a)unive.it -- -- "Nota automatica aggiunta dal sistema di posta. Destina il 5 per mille per sostenere con borse di studio gli studenti meritevoli di Ca' Foscari. E' un atto volontario, non costa nulla e non sostituisce l'8 per mille. Scegli Ca' Foscari: codice fiscale 80007720271 Please note that the above message is addressed only to individuals filing Italian income tax returns."

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Seminario prof. Juan Romo
by Francesca Ieva 16 Jun '15

16 Jun '15

Si comunica che in data *23 giugno 2015 alle ore 14.30* presso il *Dipartimento di Matematica del Politecnico di Milano* (Aula Saleri, 6° piano ed. Nave, via Bonardi 9) il prof. Juan Romo, dell'università Carlos III di Madrid, terrà un seminario dal titolo _ _"_Detecting functional outliers: the outliergram_" Tutti gli interessati sono invitati a partecipare. Cordialmete Francesca Ieva -- Francesca Ieva Department of Mathematics Università degli Studi di Milano, via Saldini 50, 20133 Milano web: https://sites.google.com/site/mypagefi mail to: francesca.ieva(a)unimi.it **************** Per destinare il 5x1000 all'Universita' degli Studi di Milano: indicare nella dichiarazione dei redditi il codice fiscale 80012650158. http://www.unimi.it/13084.htm?utm_source=firmaMail&utm_medium=email&utm_con…

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scouting per individuazione del Direttore di IMT
by Irene Crimaldi 16 Jun '15

16 Jun '15

Salve, comunico che con* Decreto IMT n.01978(47).VII.1 del 12 giugno 2015* è stata avviata la procedura di scouting finalizzata alla individuazione del Direttore dell'Istituto IMT Alti Studi Lucca *http://www.imtlucca.it/ <http://www.imtlucca.it/>* . L'avviso di scouting insieme alla designazione del Comitato di selezione è disponibile all'indirizzo web *http://www.imtlucca.it/direttore <http://www.imtlucca.it/direttore>* . La scadenza per la presentazione delle manifestazioni di interesse è fissata al *31 luglio prossimo*. Un cordiale saluto, Irene Crimaldi IMT Institute for Advanced Studies Lucca

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June 19th 2015, 11.30h Agustin Mayo Iscar talks on Robust Model based clustering
by Francesca Greselin 15 Jun '15

15 Jun '15

On June 19th 2015, 11.30h at Dipartimento di Statistica e Metodi Quantitativi Sala del Consiglio (edificio U7, 4° piano, 4064) Via Bicocca degli Arcimboldi, 8 – 20126 Milano Agustín Mayo-Iscar - Universidad de Valladolid and IMUVA will give a talk on “Robust model-based clustering and mixture modeling by using trimming and restrictions” Abstract The use of trimming procedures is common in many statistical settings to achieve robustness against outlying observations. Notably, to obtain robustness in model-based clustering and mixture modeling, the only adoption of trimming is not enough. Constraints on the scatters, corresponding to the clusters or to the mixture components, are needed too. The talk presents robust methodology based on the joint application of trimming and feasible restrictions for different clusters and mixture models settings. As it is typical in all proposals designed for this aim, some input parameter needs to chosen, to set the trimming level and the scatter constraints. Data driven tools for helping the user in choosing such values will be also presented. for more info: e-mail: francesca.greselin(a)unimib.it http://www.dismeq.unimib.it

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Seminario di Elliot Lieb il 16-06-2015 a Roma Tre
by Pietro Caputo 15 Jun '15

15 Jun '15

SEMINARIO Prof. Elliott Lieb Princeton University (with Mathieu Lewin, C.N.R.S.) Titolo: Indirect Coulomb Energy with Gradient Correction Martedi' 16 Giugno 2015 ORE 14:30 Dipartimento di Matematica e Fisica Universita' degli Studi Roma Tre Aula F, primo piano, edificio Aule Largo San Leonardo Murialdo,1 Abstract We prove a Lieb-Oxford-type inequality on the indirect part of the Coulomb energy (also known as the exchange-correlation energy) of a general many-particle quantum state, with a lower constant than the original statement but involving an additional gradient correction. The result is similar to an inequality of Benguria, Bley and Loss, except that our correction term is purely local, which is more usual for density functional theory. No previous knowledge of the subject will be assumed; a short tutorial on the subject and its importance to quantum chemistry will be presented.

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