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seminario di G. Zanco a Milano-Bicocca ore 10.30
by federica.masiero＠unimib.it 29 Jun '14

29 Jun '14

Mi scuso per il doppio invio dell'avviso di seminario, nel messaggio precedente mancava l'orario Venerdì 4 Luglio alle ore 10.30, presso il Dipartimento di Matematica e Applicazioni dell'Università di Milano-Bicocca, via Cozzi, 55, Edificio U5, stanza 3014 (terzo piano), il Dott. Giovanni Zanco dell'Università di Pisa, terrà un seminario dal titolo "Path-dependent Stochastic Differential Equations and Kolmogorov's PDEs" Abstract: I will show some recent results obtained in joint works with F. Flandoli and F. Russo about path-dependent stochastic differential equations, their formulation in infinite-dimensional spaces and the link with existence and uniqueness results for path-dependent PDEs. I will also show the connection between the framework developed in such papers and the functional calculus introduced by B. Dupire and R. Cont and D-A. Fournié. Tutti gli interessati son invitati a partecipare. Cordiali saluti, Federica Masiero

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seminario G. Zanco a Milano-Bicocca
by federica.masiero＠unimib.it 28 Jun '14

28 Jun '14

Venerdì 4 Luglio, presso il Dipartimento di Matematica e Applicazioni dell'Università di Milano-Bicocca, via Cozzi, 55, Edificio U5, stanza 3014 (terzo piano), il Dott. G. Zanco dell'Università di Pisa, terrà un seminario dal titolo "Path-dependent Stochastic Differential Equations and Kolmogorov's PDEs" Abstract: I will show some recent results obtained in joint works with F. Flandoli and F. Russo about path-dependent stochastic differential equations, their formulation in infinite-dimensional spaces and the link with existence and uniqueness results for path-dependent PDEs. I will also show the connection between the framework developed in such papers and the functional calculus introduced by B. Dupire and R. Cont and D-A. Fournié. Tutti gli interessati son invitati a partecipare. Cordiali saluti, Federica Masiero

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assegno di ricerca
by Paola Rancoita 27 Jun '14

27 Jun '14

Cari colleghi, vi inoltro la segnalazione della Prof.ssa Di Sero riguardo un assegno di ricerca in Statistica, presso il Centro di statistica per le scienze biomediche (CUSSB) dell'Università Vita-Salute San Raffaele. Cordiali saluti, Paola Rancoita ------------------------------------------------- Carissimi Colleghe e Colleghi, desidero segnalare a breve l'emissione di un bando per un assegno di ricerca su tematiche di metodologia statistica e computazionale per dati ad alta dimensionalità (clinici e genomici) in contesti di aging e neuroscienze. In attesa dell'emissione del Bando Ufficiale che segnalerò in seguito su questa lista, tutti gli interessati possono inviare il loro curriculum già da ora alla mia attenzione (diserio.clelia(a)unisr.it). L'assegno è annuale con rinnovo previsto fino a 3 anni. E' indirizzato a giovani in possesso di dottorato di ricerca preferenzialmente in scienze statistiche (o biostatistiche), informatiche e matematiche e prevede l'inserimento in progetti di ricerca internazionali già attivi. Restando a disposizione per qualunque dettaglio, vi invio un caro saluto Clelia Clelia Di Serio, PhD Associate Professor in Medical Statistics and Epidemiology Director of CUSSB (University Centre for Statistics in the Biomedical Sciences) Vita-Salute San Raffaele University 20132 Milan, Italy

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Seminario DANIELS
by Matteo Ruggiero 27 Jun '14

27 Jun '14

**************************************************************** STATISTICS SEMINARS @ COLLEGIO CARLO ALBERTO **************************************************************** Venerdi' 4 Luglio 2014 alle ore 12:00, presso la sala rossa del Collegio Carlo Alberto, Moncalieri (TO), si terra' il seguente seminario: Michael J. DANIELS (University of Texas at Austin) A FLEXIBLE BAYESIAN APPROACH TO MONOTONE MISSING DATA IN LONGITUDINAL STUDIES WITH INFORMATIVE MISSINGNESS WITH APPLICATION TO AN ACUTE SCHIZOPHRENIA CLINICAL TRIAL Abstract: We develop a Bayesian nonparametric model for a longitudinal response in the presence of nonignorable missing data. Our general approach is to first specify a {\em working model} that flexibly models the missingness and full outcome processes jointly. We specify a Dirichlet process mixture of missing at random (MAR) models as a prior on the joint distribution of the working model. This aspect of the model governs the fit of the observed data by modeling the observed data distribution as the marginalization over the missing data in the working model. We then separately specify the conditional distribution of the missing data given the observed data and dropout. This approach allows us to identify the distribution of the missing data using identifying restrictions as a starting point. We propose a framework for introducing sensitivity parameters, allowing us to vary the untestable assumptions about the missing data mechanism smoothly. Informative priors on the space of missing data assumptions can be specified to combine inferences under many different assumptions into a final inference and accurately characterize uncertainty. These methods are motivated by, and applied to, data from a clinical trial assessing the efficacy of a new treatment for acute Schizophrenia. Joint work with Antonio Linero at the University of Florida Tutti gli interessati sono invitati a partecipare. Il seminario e' organizzato dalla "de Castro" Statistics Initiative (http://www.carloalberto.org/stats) in collaborazione con il Collegio Carlo Alberto. Cordiali saluti, Matteo Ruggiero --- Matteo Ruggiero University of Torino & Collegio Carlo Alberto http://web.econ.unito.it/ruggiero

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Seminario: Luciano Campi - presso Dipartimento di Informatica, Università di Verona
by Luca di persio 26 Jun '14

26 Jun '14

Annuncio di Seminario Luciano Campi, London School of Economics, London Giovedi' 3 Luglio, presso il Dipartimento di Informatica, Università di Verona Strada le Grazie, 15 - Sala Verde ore 15:00 (14:45 rinfresco, 15:00 inizio seminario) Title: Utility indifference valuation for non-smooth payoffs with an application to power derivatives Abstract: We consider the problem of exponential utility indifference valuation under the simplified framework where traded and nontraded assets are uncorrelated but where the claim to be priced possibly depends on both. Traded asset prices follow a multivariate Black and Scholes model, while nontraded asset prices evolve as generalized Ornstein-Uhlenbeck processes. We provide a BSDE characterization of the utility indifference price (UIP) for a large class of non-smooth, possibly unbounded, payoffs depending simultaneously on both classes of assets. Focusing then on European claims and using the Gaussian structure of the model allows us to employ some BSDE techniques (in particular, a Malliavin-type representation theorem due to Ma (2002)) to prove the regularity of Z and to characterize the UIP for possibly discontinuous European payoffs as a viscosity solution of a suitable PDE with continuous space derivatives. The optimal hedging strategy is also identified essentially as the delta hedging strategy corresponding to the UIP. Since there are no closed-form formulas in general, we also obtain asymptotic expansions for prices and hedging strategies when the risk aversion parameter is small. Finally, our results are applied to pricing and hedging power derivatives in various structural models for energy markets. Contact Person: Luca Di Persio __ Luca Di Persio - PhD assistant professor of Probability and Mathematical Finance Dept. Informatics University of Verona strada le Grazie 15 - 37134 Verona - Italy Tel : +39 045 802 7968 Dept. Math University of Trento V. Sommarive, 14 - 38123 Povo - Italy Tel : +39 0461 281686

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post-doc positions (Assegni di ricerca)at Luiss-Roma and University of Pisa
by Fausto Gozzi 21 Jun '14

21 Jun '14

Dear all We would like to inform you about two post doc positions (assegni di ricerca). 1) The first one is a 2-year position (not renewable) at Luiss University, Roma, Department of Economics and Finance. Deadline: July 31 Starting time: January 2015 Supervisor: Fausto Gozzi Title: Mathematical Models for the management of renewable resources (Modelli matematici per lo studio di sistemi eterogenei e per la gestione di risorse rinnovabili) site (english) http://ricerca.economiaefinanza.luiss.it/en/news/2014/06/12/competition-by-… site (italian) http://ricerca.economiaefinanza.luiss.it/news/2014/06/11/bando-per-la-valut… Applications are welcome. Potentially interested people may contact fgozzi(a)luiss.it for further informations 2) The second one is a 1-year position (not renewable) at University of Pisa, Department of Mathematics. The announcement is not yet ready but will appear soon; the starting time of the grant is expected in December 2014 or January 2015. Supervisor: Franco Flandoli Keywords: stochastic differential equations and stochastic PDEs, optimal control of deterministic and stochastic infinite dimensional systems, stochastic models in fluid dynamics. Applications are welcome. Since the formal announcement is not yet ready, potentially interested people may contact flandoli(a)dma.unipi.it __________________________________________________________________ kind regards Franco Flandoli, Fausto Gozzi --- Questa e-mail è priva di virus e malware perché è attiva la protezione avast! Antivirus. http://www.avast.com

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Seminario N. Leonenko a Padova- Mercoledì 2 luglio
by Marco Ferrante 21 Jun '14

21 Jun '14

Annuncio di seminario: Mercoledì 2 Luglio alle ore 12.00 in Aula 2BC30 del Dipartimento di Matematica dell'Università di Padova il Prof. Nikolai Leonenko dell'Università di Cardiff terrà il seminario Titolo: Fractional Pearson diffusions. Abstract: Pearson diffusions have stationary distributions of Pearson type. They includes Ornstein-Uhlenbeck, Cox-Ingersoll-Ross, and several others wellkown processes. Their stationary distributions solve the Pearson equation, developed by Pearson in 1914 to unify some important classes of distributions (e.g., normal, gamma, beta). Their eigenfunction expansions involve the traditional classes of orthogonal polynomials (e.g., Hermite, Laguerre, Jacobi). We develop fractional Pearson di¢ sions ([1],[2]), constructing by a non-Markovian inverse stable time change. Their transition densities are shown to solve a time-fractional analogue to the diffusion equation with polynomial coefficients. Because this process is not Markovian, the stochastic solution provides additional information about the movement of particles that di§use under this model. This is joint work with M.M. Meerschaert and A. Sikorskii (Michigan State Univeraity, USA). Anomalous diffusions have proven useful in applications to physics, geophysics, chemistry, and finance. Marco Ferrante -- Prof. Marco Ferrante Dipartimento di Matematica Universita' degli Studi di Padova Via Trieste 63 , I-35121 Padova - ITALY Tel: +39-0498271366 Fax: +39-0498271499 E-Mail: ferrante(a)math.unipd.it URL: http://www.math.unipd.it/~ferrante

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workshop "Dependence in Risk Measurement and Risk Management"
by giovanni.puccetti＠unifi.it 18 Jun '14

18 Jun '14

Dear colleague, the Department of Economics and Management of the University of Florence will organize the workshop Dependence in Risk Measurement and Risk Management on December 18-19, 2014. The participation in the Workshop will be free of charge with a mandatory registration. We welcome submissions of abstracts for contributed talks with the possibility to contribute to a special issue in Dependence Modeling to be published in early 2015. All the information about the event are available at the website https://sites.google.com/site/dependencerisk/ We would be pleased if you could forward this e-mail to anyone possibly interested and download/print the announcement from the above web-page to promote the event to your institution. We are looking forward to seeing you in Florence, best regards Giovanni Puccetti -- Assistant Professor School of Economics and Management University of Firenze Building D6/2.30 via delle Pandette 32 50127 Firenze ITALY https://sites.google.com/site/giovannipuccetti/

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Seminario Politecnico di Torino - 20 giugno
by Bertrand Lods 18 Jun '14

18 Jun '14

Dear Colleagues, this is a reminder for the two seminars on applications of Information Geometry that Luigi Malagò and Giovanni Pistone will give on coming Friday 20 June at DISMA Politecnico di Torino at 12 and 14:30 resp. Please find the abstracts at http://calvino.polito.it/~probstat/seminars/seminars14.html

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Seminario a Padova - Giovedì 26 giugno ore 16
by Marco Ferrante 18 Jun '14

18 Jun '14

Annuncio di seminario: Giovedì 26 giugno alle ore 16.00 in Aula 2AB40 del Dipartimento di Matematica dell'Università di Padova il Prof. Carles Rovira dell'Universitat de Barcelona terrà il seminario Titolo: Stochastic differential equations with non-negativity constraints driven by fractional Brownian Abstract: In this talk, we deal with existence and uniqueness result of solution for stochastic differential driven by a fractional Brownian motion with Hurst parameter $H$ and with reflection. The cases $H >\frac12$ and $H \in (\frac13,\frac12)$ must be considered separately. When $H>\1/2$, we first study an ordinary integral equation where the integral is defined in the Young sense and then we apply this result pathwise to solve the stochastic problem. On the other hand, when H $\in (\frac13,\frac12)$, we consider an existence and uniqueness result of solution for multidimensional delay differential equations with normal reflection and driven by a H\"older continuous function of order $\beta \in (\frac13,\frac12)$. Marco Ferrante

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