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Seminars in Statistics at Collegio Carlo Alberto - Chris Oates (Newcastle University)
by Matteo Giordano 30 Oct '26

30 Oct '26

SEMINARS IN STATISTICS @ COLLEGIO CARLO ALBERTO <https://www.carloalberto.org/events/category/seminars/seminars-in-statistic…> Venerdì 06/11/2026, presso il Collegio Carlo Alberto, in Piazza Arbarello 8, Torino, si terrà il seguente seminario: 12.00-13.00 Speaker: Chris Oates (Newcastle University) Title: Overcoming Model Misspecification in Bayesian Inference of Molecular Signalling Networks Abstract: Bayesian inference of molecular signalling networks usually relies on tractability of the marginal likelihood, enabling the set of possible networks to be efficiently explored. As such, linear models with independent errors and conjugate priors are routinely used. However, the dynamics of molecular signalling are nonlinear, and relevant confounders are often unobserved; failure to account for these complexities will almost certainly lead to over-confident inferences in the standard Bayesian framework. To confront this reality, we develop a post-Bayesian approach to inference of molecular signalling networks, guided by the principle that uncertainty should not vanish when the statistical model is misspecified, even in the infinite-data limit. Technically, we extend the predictively-oriented (PrO) posterior of McLatchie et al. (2025) to the setting of latent variable models, empirically investigating the properties of PrO posteriors in the challenging network inference context. Sarà possibile seguire il seminario anche in streaming: chiunque volesse collegarsi è pregato di inviare un’email a matteo.giordano(a)unito.it <mailto:matteo.giordano@unito.it> Il seminario è organizzato dalla "de Castro" Statistics Initiative (www.carloalberto.org/stats <http://www.carloalberto.org/stats>) in collaborazione con il Collegio Carlo Alberto. Cordiali saluti, Matteo Giordano Tenure-Track Assistant Professor (RTT) Department of Economics, Social Studies, Applied Mathematics and Statistics (ESOMAS) www.matteogiordano.weebly.com <https://matteogiordano.weebly.com/>

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OWABI seminar - today - Chris Oates
by Massimiliano Tamborrino 29 Oct '26

29 Oct '26

Dear all, a kind reminder that the first OWABI seminar www.warwick.ac.uk/owabi<http://www.warwick.ac.uk/owabi> is today, Thursday the 29th October at 11am UK time, when Chris Oates<https://oates.work/> (Newcastle University) will be talking about "Overcoming Model Misspecification in Bayesian Inference of Molecular Signalling Networks" with an abstract reported below. The talk will be streamed at the OWABI MS Team channel General | OWABI Seminar: One World Approximate Bayesian Inference Seminar | Microsoft Teams<https://teams.microsoft.com/l/team/19%3AdhZ_4e_XLNJzCXPAMzTvT6BZ5KShEETkd_w…> at the following link Join: https://teams.microsoft.com/meet/3744683199415937?p=eu2tG5Ukrf84zJvPmB Meeting ID: 374 468 319 941 593 7 Passcode: Km6Ws2Hx Speaker: Chris Oates<https://oates.work/> (Newcastle University) Title: Overcoming Model Misspecification in Bayesian Inference of Molecular Signalling Networks Abstract: Bayesian inference of molecular signalling networks usually relies on tractability of the marginal likelihood, enabling the set of possible networks to be efficiently explored. As such, linear models with independent errors and conjugate priors are routinely used. However, the dynamics of molecular signalling are nonlinear, and relevant confounders are often unobserved; failure to account for these complexities will almost certainly lead to over-confident inferences in the standard Bayesian framework. To confront this reality, we develop a post-Bayesian approach to inference of molecular signalling networks, guided by the principle that uncertainty should not vanish when the statistical model is misspecified, even in the infinite-data limit. Technically, we extend the predictively-oriented (PrO) posterior of McLatchie et al. (2025) to the setting of latent variable models, empirically investigating the properties of PrO posteriors in the challenging network inference context. This is joint work with Yinghan Li, Heishiro Kanagawa, Francesca Romana Crucinio, and Matthew A. Fisher. Keywords: model misspecification, post-Bayesian, predictively-oriented posteriors Reference: Y. Li, H. Kanagawa, F. R. Crucinio, M. A. Fisher, C.J. Oates. Overcoming Model Misspecification in Bayesian Inference of Molecular Signalling Networks. Preprint at ArXiv:2609.24590 https://arxiv.org/abs/2609.24590 Best, Massimiliano on the behalf of the OWABI Organisers ------ Dr. Massimiliano Tamborrino Reader (Associate Professor) and WIHEA Fellow Department of Statistics University of Warwick https://warwick.ac.uk/tamborrino

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Annuncio seminario 4/11: Luca Scarpa (Polimi) presso Milano-Bicocca
by Federica Masiero 29 Oct '26

29 Oct '26

Buongiorno vi segnalo il seguente seminario che Luca Scarpa (Politecnico di Milano) terrà presso l’Università degli Studi di Milano-Bicocca: *Data e ora:* Mercoledì 4 Novembre 2026, ore 15:00 *Luogo:* Aula U4-07 (Edificio U4, Piazza della Scienza 4, Milano) - Università degli Studi di Milano-Bicocca *Relatore:* Luca Scarpa (Politecnico di Milano) *Titolo:* Strong Feller property and irreducibility for stochastic PDEs with degenerate multiplicative noise *Abstract:* We establish strong Feller property and irreducibility for the transition semigroup associated to a class of nonlinear stochastic partial differential equations with multiplicative degenerate noise. As a by-product, we prove uniqueness of the invariant measure under very mild assumptions. The drift of the equation diverges exactly where the noise coefficient vanishes, resulting in a competition between the dissipative effects and the degeneracy of the noise.The main idea is to introduce a mathematical method to measure the accumulation of the solution towards the potential barriers, allowing to give rigorous meaning to the inverse of the noise operator even in the degenerate case. If the singularity of the drift and the degeneracy of the noise are suitably balanced, the dynamics are shown to stabilise for large times. From the mathematical point of view, the results provide a first generalisation of the classical work by Peszat & Zabczyk to the case of degenerate multiplicative diffusions. From the application perspective, the models cover interesting scenarios in physics, in the context of evolution of relative concentrations of mixtures, under the influence of thermodynamically-relevant potentials of Flory-Huggins type. Tutti gli interessati sono invitati a partecipare Cordialmente Federica Masiero -- Federica Masiero Dipartimento di Matematica e Applicazioni, Università di Milano Bicocca, Edificio U5 via Roberto Cozzi, 55, 20126 Milano

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incarico di ricerca, Sapienza
by Alessandro Alla 29 Oct '26

29 Oct '26

Buongiorno, Vi informo che e' appena uscito il bando per un Incarico di Ricerca di 1 anno, presso il Dipartimento di Matematica, Sapienza Universita' di Roma, sotto la mia supervisione, dal titolo "Efficient numerical methods for Partial Differential Equations". Scadenza del bando: 27 Novembre 2026 Maggiori informazioni al link https://web.uniroma1.it/trasparenza/bando/247427_idr12026 Vi prego di far circolare l'informazione tra i possibili interessati. Cordiali saluti Alessandro Alla ———————————————————————————————- Alessandro Alla Associate Professor Sapienza Università di Roma Department of Mathematics Junior Research Fellow Scuola Superiore di Studi Avanzati Sapienza (SSAS) E-Mail: alessandro.alla(a)uniroma1.it www.alessandroalla.com -- *Fai crescere le giovani ricercatrici e i giovani ricercatori*** *con il 5 per mille alla Sapienza* Scrivi il codice fiscale dell'Università *80209930587 **Cinque per mille <https://www.uniroma1.it/it/node/23149>*

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Two postdoc position in Rome Tor Vergata
by Giorgio Cipolloni 28 Oct '26

28 Oct '26

Dear Colleagues, Giorgio Cipolloni (https://giorgiocipolloni.github.io) is opening 2 postdoc positions in Rome Tor Vergata. The positions are for two years, with a possible one-year extension, and carry no teaching duties. For details see https://pica.cineca.it/uniroma2/cr20260326/ and the attached file. Unfortunately, the call is in Italian, but the interested candidates are very welcome to contact Giorgio Cipolloni at giorgiocipolloni93(a)gmail.co <giorgiocipolloni93(a)gmail.com>m <giorgiocipolloni93(a)gmail.com> for any information. The application deadline is November 14th 2026. I would be grateful if you could share this announcement with potential candidates. Best, Giorgio

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Seminario di Simmaco Di Lillo alla Sapienza - 3 Novembre
by Faggionato, Alessandra 28 Oct '26

28 Oct '26

Buongiorno, Martedì 3 Novembre alla Sapienza Simmaco di Lillo terrà il seminario descritto sotto. Tutti gli interessati sono invitati a partecipare. Cordialmente, Alessandra Faggionato %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Where: Sala di Consiglio, Dipartimento di Matematica G. Castelnuovo, Sapienza. When: November 3 2026, at 14:00. Speaker: Simmaco Di Lillo (Roma Tor Vergata - University of Luxembourg) Title: Geometry and Spectra of Deep Neural Networks Abstract: In this talk we show how tools from spherical harmonic analysis, stochastic geometry and random fields can be used to study deep neural networks. In the infinite-width limit, a deep network induces an isotropic Gaussian field on the sphere, and we investigate its behaviour as the depth increases. At the spectral level, a single parameter, easily computed from the activation, splits networks into three regimes. Depending on the regime, the fields converge to a constant, converge in L^2 while their Sobolev norms diverge, or have their angular power spectrum drift towards arbitrarily high frequencies. At the geometric level, we study the boundary volumes of excursion sets. For irregular activations (e.g., Heaviside) they exhibit fractal behaviour, with Hausdorff dimension increasing with depth. For more regular ones (e.g., ReLU, logistic, tanh) the same spectral parameter determines whether the expected boundary volumes vanish, stay constant or diverge exponentially. Based on joint works with Domenico Marinucci, Michele Salvi, Stefano Vigogna -- ****************************************************************************** Prof. Alessandra Faggionato https://sites.google.com/mat.uniroma1.it/alessandrafaggionato/home Department of Mathematics University "La Sapienza" Piazzale Aldo Moro, 5 00185 - Rome Office 123, first floor ******************************************************************************

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Roma Tre - 28 ottobre ore 16:00 - Seminario di Pietro Caputo
by Elisabetta Candellero 26 Oct '26

26 Oct '26

Nell'ambito dei "Tè di Matematica", per celebrare il pensionamento di Fabio Martinelli, mercoledì *28 ottobre* alle *ore 16:00*, presso il Dipartimento di Matematica e Fisica di Roma Tre, Pietro Caputo terrà un seminario dal titolo *"Entropy and Gibbs samplers: from functional inequalities to mixing times".* *Abstract:* Functional inequalities provide a powerful framework for studying convergence to equilibrium in stochastic dynamics and Markov chains, at the intersection of probability theory and statistical mechanics. For interacting spin systems such as the Ising and hard-core models, spectral gaps and logarithmic Sobolev inequalities relate structural properties of their Gibbs measures to the rate at which the dynamics used to sample from them approach equilibrium. These themes have also become central to the analysis of randomized algorithms for sampling and counting in theoretical computer science. Fabio Martinelli has made highly influential contributions to this field since the early 1990s. On the occasion of his retirement, I will introduce some of its central ideas and discuss more recent developments, with particular emphasis on entropy factorization and Gibbs samplers. Il seminario si svolgerà in presenza presso il Dipartimento di Matematica e Fisica, Lungotevere Dante 376, aula *M1*.

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Call for Applications: 1-Year Research Fellowship-Dept. MEMOTEF, Sapienza
by Claudia Ceci 26 Oct '26

26 Oct '26

Dear Colleagues, I am pleased to share that the Department of Methods and Models in Economics, Territory and Finance (MEMOTEF) at Sapienza Università di Roma has officially opened a call for applications for a *1-year Research Fellowship *(*Incarico di Ricerca*). The research activity will focus on the quantitative modeling and parametric pricing of innovative risk-transfer instruments for emerging risks, alongside the application of stochastic control techniques and dynamic optimization methods to design effective risk-mitigation strategies. The contract is for 12 months (renewable depending on funding and project needs). A Master’s degree (*Laurea Magistrale*) in Mathematics, Finance, Economics, or related quantitative disciplines is required. *A PhD is considered a preferred qualification, but is not mandatory.* All details regarding eligibility, application procedures, and deadlines are available *here* <https://trasparenza.uniroma1.it/page/5/details/37185/bando-incarico-di-rice…> . *Deadline for applications:* 18.11.2026 (23:59, local time) I would be very grateful if you could share this call with your networks or forward it to potential candidates who might be interested. Best regards, Claudia Ceci Dipartimento di Metodi e Modelli per l’Economia, il Territorio e la Finanza (MEMOTEF) Università di Roma La Sapienza Via Del Castro Laurenziano 9 Roma 00161 Italy Email: claudia.ceci(a)uniroma1.it -- *Fai crescere le giovani ricercatrici e i giovani ricercatori*** *con il 5 per mille alla Sapienza* Scrivi il codice fiscale dell'Università *80209930587 **Cinque per mille <https://www.uniroma1.it/it/node/23149>*

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Next Webinar PRISMA - Nov 10, 2026 - Speakers: Elena Bandini & Francesco Russo
by Luciano Campi 26 Oct '26

26 Oct '26

Dear colleagues and friends We are happy to announce the next webinar of the team UMI - PRISMA (http://www.umi-prisma.polito.it/) PRISMA webinars follow a colloquium-style format designed to foster exchange and discussion within the Italian probability and statistics community. Each session features two speakers, who give two closely connected 30-minute talks providing the community with a perspective on their research area. Over the past few years, recordings of the seminars have been made available on the UMI YouTube channel: https://youtube.com/playlist?list=PLmySpc-jrtAMq84VH71evyqPc1hl6eEQb The next event is scheduled for Tuesday, Nov 10, 2026. The speakers will be Elena Bandini (Università di Bologna) and Francesco Russo (ENSTA), who will speak on: Weak Dirichlet processes, path-dependent martingale problems and BSDEs according to the following schedule 16:00 Elena Bandini 16:30 Break and discussions 16:45 Francesco Russo 17:15 Conclusions and discussions The abstract can be found in the attached pdf. The seminars will be streamed on Teams at the following link: <https://teams.microsoft.com/meet/3990193635962130?p=dPpioonTpoD8sCgnfh> teams.microsoft.com<https://teams.microsoft.com/meet/3990193635962130?p=dPpioonTpoD8sCgnfh> [X]<https://teams.microsoft.com/meet/3990193635962130?p=dPpioonTpoD8sCgnfh> We look forward to seeing many of you there! Luciano Campi, Maurizia Rossi -------------------------------------------------------- Luciano Campi Full Professor University of Milan Department of Mathematics Email: luciano.campi(a)unimi.it Web: sites.google.com/site/lucianocampi1

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Probability Seminar by Ronan Herry (Univ. Rennes 1) at Milano-Bicocca
by Maurizia Rossi 25 Oct '26

25 Oct '26

Dear colleagues, I am glad to announce the following seminar, which will take place on *Friday, 30 October 2026, at 11:00* at the University of *Milano-Bicocca*, Department of Physics, *Building U2*, *Room 5017* (5th floor). Speaker: *Ronan Herry* (Université de Rennes) https://www.ronanherry.org/ *Title:* Limit distributions for polynomials with independent Gaussian entries. *Abstract:* In this talk, I will try to explain a recent result of Dominique Malicet, Guillaume Poly and myself where we proved that, for all integers d, the set polynomials of degree ≤ d evaluated in an i.i.d. Gaussian sequence is closed for the convergence in law. For people familiar with multiple stochastic integrals, it says that any limit in law of a sequence of a fixed degree d multiple integral can be represented as a sum of multiple integrals of degree ≤ d. In the first part of the talk I will motivate this result and give some consequences of our results. In the second part, I will illustrate the general strategy with the case d=2 and 3. Everyone is welcome to attend! Best regards, Maurizia Rossi -- Maurizia Rossi Dipartimento di Matematica e Applicazioni Università degli Studi di Milano-Bicocca https://mauriziarossi.wordpress.com

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