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Seminar in Pisa: Langxuan Su
by Francesco Grotto 16 Mar '22

16 Mar '22

Dear Colleagues, we would like to invite you to the following seminar by Langxuan Su (Duke University) to be held next Wednesday in Pisa and online via Google Meets. The organizers, A. Agazzi and F. Grotto ------------------------------------------------------- Location: Sala Seminari, Dipartimento di Matematica, Pisa Google Meet Link: https://meet.google.com/gji-phwo-vbg Time: March 23, 2022, 15:00 CET Speaker: Langxuan Su (Duke University) Title: A Large Deviation Approach to Posterior Consistency in Dynamical Systems Abstract: We provide asymptotic results concerning (generalized) Bayesian inference for certain dynamical systems based on a large deviation approach. Given a sequence of observations, a class of parametrized model processes and a loss function, we specify the generalized posterior distribution. We state conditions on the model family and the loss function such that the posterior distribution converges. The two conditions we require are: (1) a conditional large deviation behavior for a single model process, and (2) an exponential continuity condition over the model family for the map from the parameter to the loss incurred between a model process and the observations. The proposed framework is quite general, we apply it to two very different classes of dynamical systems: continuous time hypermixing processes and Gibbs processes on shifts of finite type. We also show that the generalized posterior distribution concentrates asymptotically on those parameters that minimize the expected loss and a divergence term, hence proving posterior consistency.

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Workshop "Taming Uncertainty and Complexity in Economics and Finance" (LUISS, May 26-28, 2022)
by Giorgio Ferrari 15 Mar '22

15 Mar '22

Dear All, it is our pleasure to announce the Workshop "/Taming Uncertainty and Complexity in Economics and Finance/", to be held at LUISS University in Rome in the period *May 26-May 28, 2022*: https://sites.google.com/view/workshop-luiss-rome/overview The workshop is thought as a forum for discussing new developments concerning stochastic methods and models arising in economics, finance, and game theory. The participation to the workshop is free. However, due to Covid-regulations in place at LUISS, the number of external participants is limited to 20. If you would like to join the workshop, please write an email to workshopbielefeldluiss(a)gmail.com by April 15 and the participation will be granted on a "first come first served" basis. We will inform you after April 15 about the state of your application. Best wishes, Giorgio Ferrari (on the behalf of the organizers) -- Questa e-mail è stata controllata per individuare virus con Avast antivirus. https://www.avast.com/antivirus

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Avviso pubblicazione bando assegno di ricerca "Modelli matematici per levoluzione spazio-temporale delle variabili economiche "
by Fausto Gozzi 14 Mar '22

14 Mar '22

Buongiorno Giro alla lista la seguente copmunicazione riguardante un assegno di ricerca presso la Luiss di cui sono responsabile Cordiali saluti a tutti Fausto Gozzi >con la presente si avvisa che con DR n. 16 del >22 febbraio 2022 è stato emanato il bando per lassegno di ricerca in oggetto. > > > >Il bando è pubblico sul sito Luiss e sul sito >MIUR-Euraxess e verrà inoltre pubblicizzato >tramite i canali social della Luiss Guido Carli. > > > >La scadenza per la presentazione è fissata il >giorno 25 marzo 2022 alle ore 14:00 (CET) UTC+1. > > > >Il bando è stato pubblicato alle seguenti pagine del sito Luiss: > > > ><https://economiaefinanza.luiss.it/avvisi/ricerca>https://economiaefinanza.luiss.it/avvisi/ricerca > > > >https://economiaefinanza.luiss.it/ricerca/assegni-di-ricerca/bandi-di-conco… > > > ><https://economiaefinanza.luiss.it/en/research/research-grants/research-gran…>https://economiaefinanza.luiss.it/en/research/research-grants/research-gran… > > > >Il link per la presentazione delle candidature >è: ><http://jsa.luiss.it/LGCAssegni/index.zul?CDS=AS4094>http://jsa.luiss.it/LGCAssegni/index.zul?CDS=AS4094. > > > > Fausto Gozzi Dipartimento di Economia e Finanza LUISS - Guido Carli Viale Romania, 32 00197 Roma Italy tel 06.85225723 (office) FAX 06.86506513 e-mail: fgozzi(a)luiss.it webpage: http://docenti.luiss.it/gozzi/ old address, sometimes still used: Fausto Gozzi Dipartimento di Matematica Universita' di Pisa Largo Bruno Pontecorvo n.5 56127 Pisa Italy tel 050/2213270

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Workshop Deterministic and stochastic fractional diﬀerential equations and jump processes
by Enrico Scalas 13 Mar '22

13 Mar '22

Care colleghe e colleghi, nel caso foste interessat*, quasi tutte le presentazioni del workshop "Deterministic and stochastic fractional diﬀerential equations and jump processes" (tenutosi all'Isaac Newton Institute di Cambridge, UK) sono ora disponibili online: https://www.newton.ac.uk/event/fd2w01/ Approfitto per segnalare il secondo workshop della serie che comincera' il 21 marzo: Fractional kinetics, hydrodynamic limits and fractals https://www.newton.ac.uk/event/fd2w02/ Cordiali saluti, Enrico Scalas

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Padova Seminars in Probability and Finance - Benedikt Jahnel (WIAS, Berlin)
by Marco Formentin 13 Mar '22

13 Mar '22

Dear Colleagues, we would like to invite you to the following seminar that will take place on March 25 at 14.30. The seminar will be held online via the Zoom platform. The organizers, Alessandra Bianchi, Giorgia Callegaro, Marco Formentin _____________________________________________________ Speaker: Benedikt Jahnel (WIAS, Berlin)  Title: Phase transitions and large deviations for the Boolean model of continuum percolation for Cox point processes  MARCH 25 (Friday) - 14:30 Zoom link https://unipd.zoom.us/j/83753744114 (meeting ID 837 5374 4114), available also on the webpage https://www.math.unipd.it/~bianchi/seminari/ Abstract: In this talk, I consider the Boolean model with random radii based on Cox point processes, i.e., Poisson point processes in random environment. Under a condition of stabilization for the random environment, our results establish existence and non-existence of subcritical regimes for the size of the cluster at the origin in terms of volume, diameter and number of points, also including their moments. The second part of the talk will address rates of convergence of the percolation probability for the Cox--Boolean model with fixed radii in a variety of asymptotic regimes. This is based on joint work with Christian Hirsch, András Tóbiás and Élie Cali.

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(PMS)^2 online talk: Valentina Cammarota
by Maurizia Rossi 13 Mar '22

13 Mar '22

Dear colleagues, we are happy to announce the following online talk: Speaker: *Valentina Cammarota* (Università di Roma La Sapienza) Title: *No repulsion between critical points for random plane wave and planar Gaussian random fields.* Abstract: Random plane wave is conjectured to be a universal model for high-energy eigenfunctions of the Laplace operator on generic compact Riemannian manifolds. This is known to be true on average. We discuss one of important geometric observable: critical points. We first compute one-point function for the critical point process, in particular we compute the expected number of critical points inside any open set. After that we compute the short-range asymptotic behaviour of the two-point function. This gives an unexpected result that the second factorial moment of the number of critical points in a small disc scales as the fourth power of the radius. Joint work with Dmitry Beliaev and Igor Wigman. Date and time: *Monday March 14, 17:30-18:30 (Rome time zone)*. Zoom link: https://us02web.zoom.us/j/84185018822?pwd=UE80NXJ2Z01GaWN3aTduMGVpeG9EQT09 ID riunione: *841 8501 8822* Passcode: *713253* This is a talk of the *(PMS)^2: Pavia-Milano Seminar series on Probability and Mathematical Statistics* organized jointly by the universities Milano-Bicocca, Pavia, Milano-Politecnico and Milano-Statale. For more information see the dedicated webpage: https://paviamilanoseminars.wordpress.com/ Participation is free and welcome! Best regards, The organizers (Mario Maurelli, Carlo Orrieri, Maurizia Rossi, Margherita Zanella) -- Maurizia Rossi Dipartimento di Matematica e Applicazioni Università degli Studi di Milano-Bicocca https://mauriziarossi.wordpress.com

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(Update) Seminario ERNESTO DE VITO @ UniTo
by Elvira Di Nardo 12 Mar '22

12 Mar '22

********************************************************************* SEMINARI DI PROBABILITA' E STATISTICA MATEMATICA DIPARTIMENTO DI MATEMATICA "G. PEANO" UNIVERSITA' DEGLI STUDI DI TORINO *con il supporto della fondazione CRT* ********************************************************************* https://sites.google.com/view/torinostochastics/seminar-series-on-data-scie… Nell'ambito delle attività seminariali del Dottorato in Modeling and Data Science, *Giovedì 17 Marzo 2022 alle ore 17:00* in Aula Magna presso il Dipartimento di Matematica "G. Peano" dell'Università degli Studi di Torino, Via Carlo Alberto 10, il Prof. *Ernesto De Vito* (Dipartimento di Matematica, Università di Genova) terrà un seminario dal titolo *Machine Learning from a mathematical view point: a gentle introduction.* Abstract: The talk is devoted to a mathematical introduction to Machine Learning. We focus on supervised learning setting and kernel methods with square loss by using classical tools from the theory of inverse problems. Tutti gli interessati sono invitati a partecipare. E' possibile seguire il seminario on line su piattaforma WebEx. Chi fosse interessato, può scrivermi e provvederò a inviare l'invito. -- %------------------------------------------------------- Elvira Di Nardo Dept. Mathematics "G. Peano" University of Torino Via Carlo Alberto 10 10123 Torino, Italia tel. +39 0116702862 fax +39 0116702878 http://www.elviradinardo.it %-------------------------------------------------------

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Webinar Marc Henrard 17 March 2022, 16:30: "Benchmark transition: why mathematicians/statisticians are required"
by Marco Bianchetti 12 Mar '22

12 Mar '22

Statistics Seminars 2022 Dipartimento di Scienze Statistiche “Paolo Fortunati”, Università di Bologna *Marc Henrard *(muRisQ Advisory) * “Benchmark transition: why mathematicians/statisticians are required” * *Giovedì 17 marzo 2022 alle ore 16.00 * _____________________________________________________________________________ Riunione di Microsoft Teams *Partecipa da computer o app per dispositivi mobili* Fai clic qui per partecipare alla riunione <https://teams.microsoft.com/l/meetup-join/19%3ameeting_ZTYyNzU0ZTgtNmNjMy00…> Altre informazioni <https://aka.ms/JoinTeamsMeeting> | Opzioni riunione <https://teams.microsoft.com/meetingOptions/?organizerId=7e2f9ad3-2ed9-4de5-…> ____________________________________________________________________________

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Seminario ERNESTO DE VIVO @ UniTo
by Elvira Di Nardo 12 Mar '22

12 Mar '22

********************************************************************* SEMINARI DI PROBABILITA' E STATISTICA MATEMATICA DIPARTIMENTO DI MATEMATICA "G. PEANO" UNIVERSITA' DEGLI STUDI DI TORINO ********************************************************************* https://sites.google.com/view/torinostochastics/seminar-series-on-data-scie… Giovedì 17 Marzo 2022 alle ore 17:00 in Aula Magna presso il Dipartimento di Matematica "G. Peano" dell'Università degli Studi di Torino, Via Carlo Alberto 10, il Prof. *Ernesto De Vivo* (Dipartimento di Matematica, Università di Genova) terrà un seminario dal titolo *Machine Learning from a mathematical view point: a gentle introduction.* Abstract: The talk is devoted to a mathematical introduction to Machine Learning. We focus on supervised learning setting and kernel methods with square loss by using classical tools from the theory of inverse problems. Tutti gli interessati sono invitati a partecipare. -- %------------------------------------------------------- Elvira Di Nardo Dept. Mathematics "G. Peano" University of Torino Via Carlo Alberto 10 10123 Torino, Italia tel. +39 0116702862 fax +39 0116702878 http://www.elviradinardo.it %-------------------------------------------------------

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Seminar in Statistics - CRISTINA BUTUCEA
by Pierpaolo De Blasi 12 Mar '22

12 Mar '22

SEMINARS IN STATISTICS @ COLLEGIO CARLO ALBERTO <https://www.carloalberto.org/events/category/seminars/seminars-in-statistic…> Venerdi 18 Marzo 2022, alle ore 12.00, presso il Collegio Carlo Alberto, in Piazza Arbarello 8, Torino, si terrà il seguente seminario: ------------------------------------------------ Speaker: *Cristina Butucea* (CREST, ENSAE IP Paris) Title: *Nonlinear functionals estimation under local differential privacy* Abstract: The concept of differential privacy provides a rigorous formalism to randomize data and quantify the amount of privacy. We consider i.i.d. individuals with outcomes distributed according to the common probability distribution P. This original data is further randomized using a privacy mechanism into observations that the statistician is allowed to use in order to recover information about the distribution P. We will consider local differential privacy where each sample from the original data is privatized on the user’s local machine before its release. We build privatized samples and nonparametric estimation methods of nonlinear functionals of the probability density and prove their optimality. We show that for the estimation of a quadratic functional, interactive procedures that use previously released private data are faster than the non interactive ones. In both cases we show how to produce privacy mechanisms and estimators adaptive to (free of) the smoothness of the underlying density. We extend these results to non smooth functionals of the density. This is based on joint work with A. Rohde, L. Steinberger and Y. Issartel. ------------------------------------------------ In ottemperanza alle norme anti Covid, per partecipare in presenza è necessario prenotarsi tramite il seguente form online: https://forms.gle/s6n5Z8QwNYp7fypw7 Sarà possibile seguire il seminario anche in streaming: Join Zoom Meeting <https://us02web.zoom.us/j/88303761211?pwd=MzFhOThna1B5WWFqWVNySEVMcEVMdz09> Meeting ID: 883 0376 1211 Passcode: 493770 Il seminario è organizzato dalla "de Castro" Statistics Initiative www.carloalberto.org/stats Cordiali saluti, Pierpaolo De Blasi -- Pierpaolo De Blasi University of Torino & Collegio Carlo Alberto carloalberto.org/pdeblasi <https://sites.google.com/a/carloalberto.org/pdeblasi/> -- Pierpaolo De Blasi University of Torino & Collegio Carlo Alberto carloalberto.org/pdeblasi <https://sites.google.com/a/carloalberto.org/pdeblasi/>

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