May 2022 - Random - Mailing list — Dipartimento di Matematica, UniPI

Digital ICMNS 20202 - Minisymposia announcement, and call for submissions
by Massimiliano ... 25 May '22

25 May '22

Dear all, We are delighted to announce a tentative programme of the 8th International Conference on Mathematical Neuroscience (ICMNS 2022) which will take place in a virtual format, via Zoom, on July 6-8, 2022, between 14:00 and 18:00 (GMT+2). Attendance is free but requires registration via our website https://www.danieleavitabile.com/icmns2022digital We would like to remind you that the call for micro-talk submissions is open until the 31st of May. Micro-talk sessions are one-hour sessions consisting of a sequence of very short introductions (2 minutes, 1 slide) by the presenters to their research, followed by an opportunity to chat with individual presenters about their research in breakout rooms. You can submit micro-talks using this link https://tinyurl.com/3e3fu8wv It is our pleasure to confirm that this year's plenary speakers will be * Dani S. Bassett (University of Pennsylvania, USA) * Sue Ann Campbell (University of Waterloo, Canada) * Thomas Serre (Brown University, USA) In addition, there will be 6 minisymposium sessions: MS1: Learning (and compressing) stochastic sequences of events, organised by Antonio Galves (Universidade de São Paulo, Brasil). Speakers: Aline Duarte, Noslen Hernández, Marcela Swarc, Claudia Vargas. MS2: Patterns and Rhythms in Balanced Neural Networks, organised by James MacLaurin (New Jersey Institute of Technology, USA). Speakers: Mark Goldman Olivia Gozel Robert Rosenbaum, Moshe Silverstein. MS3: Nonlinear PDEs in neuroscience, organised by Pierre Jules Abel Roux (University of Oxford, UK) and Susanne Solem (Norwegian University of Life Sciences, Norway). Speakers: Alain Blaustein, Xu’an Dou, Delphine Salort. MS4: Metastable dynamics in neural circuits, organised by Tilo Schwalger (Technische Universität Berlin, Germany). Speakers: Daniel Levenstein, Maurizio Matti, Luca Mazzucato, Bastian Pietras. MS5: Dynamical systems for neurological disorders, Organised by Christoffer Alexandersen (University of Oxford, UK) and Louisiane Lemaire (Humboldt-Universität zu Berlin, Germany). Speakers: Georgia Brennan, Damien Depannemaecker, Efstathios Pavlidis, Heike Stein, MS6 Stochastic models for neuronal activity, organised by Laura Sacerdote (University of Turin, Italy). Speakers: Giuseppe D'Onofrio, Ryota Kobayashi, Tomar Rimjhim, Ohla Shchur. We look forward to seeing you at ICMNS2022. The Organising Committee Daniele Avitabile Áine Byrne Massimiliano Tamborrino Etienne Tanré ------ Dr. Massimiliano Tamborrino Assistant Professor Department of Statistics University of Warwick https://warwick.ac.uk/tamborrino

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One World ABC Seminar - Harita Dellaporta - May 25 - 11.30am UK time
by Massimiliano ... 24 May '22

24 May '22

Dear all, I forward you an invitation for an incoming talk at the One World ABC seminar series on Wednesday May 25, 11.30am UK time. Title, abstract and link to join are reported below. Best, Massimiliano ------ Dr. Massimiliano Tamborrino Assistant Professor Department of Statistics University of Warwick https://warwick.ac.uk/tamborrino<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwarwick.a…> --------------------------------------------------------------------- Dear all, our next One WorldABC Seminar<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwarwick.a…> on May 25 is quickly approaching! Our next speaker will be Harita Dellaporta<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwarwick.a…>, who will talk about "Robust Bayesian Inference for Simulator-based Models via the MMD Posterior Bootstrap", on Wednesday May 25, at 11.30am UK time, with an abstract reported below. Please note the different time and date! The Zoom link to join the talk is https://univ-grenoble-alpes-fr.zoom.us/j/99914483254?pwd=UzhjYWJFSndHdEN2Rk…<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Funiv-gren…> Password: 601768 We look forward to seeing you on Wednesday! Best wishes, Massimiliano on the behalf of the One World ABC Seminar Organisers. When: Wednesday May 25, 11.30am UK time Speaker: Harita Dellaporta<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwarwick.a…> (University of Warwick) Title: Robust Bayesian Inference for Simulator-based Models via the MMD Posterior Bootstrap Abstract: Simulator-based models are models for which the likelihood is intractable but simulation of synthetic data is possible. They are often used to describe complex real-world phenomena, and as such can often be misspecified in practice. In this talk, I will present a novel algorithm based on the posterior bootstrap and maximum mean discrepancy estimators. This leads to a highly-parallelisable Bayesian inference algorithm with strong robustness properties. This is demonstrated through an in-depth theoretical study which includes generalisation bounds and proofs of frequentist consistency and robustness of our posterior. The approach is then assessed on a range of examples including a g-and-k distribution and a toggle-switch model. ------ Dr. Massimiliano Tamborrino Assistant Professor Department of Statistics University of Warwick https://warwick.ac.uk/tamborrino<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwarwick.a…> -- You received this message because you are subscribed to the Google Groups "sis-news" group. To unsubscribe from this group and stop receiving emails from it, send an email to sis-news+unsubscribe(a)googlegroups.com<mailto:sis-news+unsubscribe@googlegroups.com>. To view this discussion on the web visit https://groups.google.com/d/msgid/sis-news/AM7PR01MB6547EEF0B2A018D4D68F60A…<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgroups.go…>.

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Seminar in Pisa: Enrico Malatesta
by Francesco Grotto 23 May '22

23 May '22

Dear Colleagues, we would like to invite you to the following seminar by Enrico Malatesta (Bocconi) to be held Wednesday, May 25th, at Dipartimento di Matematica 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: May 25th, 2022, 14:00-15:00 CET Speaker: Enrico Malatesta Title: Phase transitions in the landscape of solutions of overparametrized neural networks. Abstract: Current deep neural networks are nonlinear devices composed of a number of parameters that far exceed the number of data points. Understanding how these systems can fit the data almost perfectly through variants of gradient descent algorithms and achieve exceptional levels of prediction accuracy without overfitting are key conceptual challenges. In this talk I will show how common techniques used in machine learning (e.g. the choice of the activation function or the loss) deeply affect the loss landscape, tending to mild its roughness. Then we shed light on the role of overparameterization in non-convex neural networks. By analytically studying a non-convex model of random features, we identify a novel (non-equilibrium) phase transition, that we call “Local Entropy” transition, controlled by the degree of overparameterization. In non-convex models this transition is strictly different to the SAT/UNSAT threshold and it coincides with the appearance of highly entropic minima of the error loss function. Those minima, in turn, are found to be highly attractive to the learning algorithms currently used in deep learning.

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Seminar in Statistics - ALEXANDER COX
by Pierpaolo De Blasi 20 May '22

20 May '22

SEMINARS IN STATISTICS @ COLLEGIO CARLO ALBERTO <https://www.carloalberto.org/events/category/seminars/seminars-in-statistic…> Venerdi 27 Maggio 2022, alle ore 12.00, presso il Collegio Carlo Alberto, in Piazza Arbarello 8, Torino, si terrà il seguente seminario: ------------------------------------------------ Speaker: *Alexander Cox* (University of Bath) Title: *Binary branching processes with Moran type interactions* Abstract: In this talk, we will discuss the large population limit of a binary branching particle system with Moran type interactions: we introduce a new model where particles evolve, reproduce and die independently and, with a probability that may depend on the configuration of the whole system, the death of a particle may trigger the reproduction of another particle, while a branching event may trigger the death of another one. We study the occupation measure of the new model, explicitly relating it to the Feynman-Kac semigroup of the underlying Markov evolution and quantifying the L2 distance between their normalisations. This model extends the fixed size Moran-type interacting particle system discussed in Del Moral, Burdzy et al, and Villemonais, and we will indeed show that our model outperforms the latter when used to approximate a birth and death process. We discuss several other applications of our model including the neutron transport equation, Sequential Monte Carlo methods, and population size dynamics. Joint work with Emma Horton and Denis Villemonais. ------------------------------------------------ In ottemperanza alle norme anti Covid, per partecipare in presenza è necessario prenotarsi tramite il seguente form online: https://docs.google.com/forms <https://docs.google.com/forms/d/e/1FAIpQLSdJkIrE0DwYtvJq6LqUTNQvL_ZAQWFD8ez…> Sarà possibile seguire il seminario anche in streaming: Join Zoom Meeting <https://us02web.zoom.us/j/89213634464?pwd=SUUe_KLj4d6lyByzLfE5VCFezDJ4lE.1> Il seminario è organizzato dalla "de Castro" Statistics Initiative www.carloalberto.org/stats -- Pierpaolo De Blasi University of Torino & Collegio Carlo Alberto carloalberto.org/pdeblasi <https://sites.google.com/a/carloalberto.org/pdeblasi/>

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2022/23 call for PhD applications
by Irene Crimaldi 19 May '22

19 May '22

*2022/23 call for PhD applications* The IMT School for Advanced Studies Lucca’s multidisciplinary PhD Programs aim at providing research skills and tools to address complex issues of the 21st century. The IMT School is looking for bright students to recruit through competitive and open procedures. English is the official language of the School, the full time PhD positions consist of a studentship, free housing in its accessible campus in the historical town of Lucca, free access to the canteen, library and other facilities on campus, additional funds for research and international mobility. Candidates must get their Master’s degree or equivalent by October 31, 2022. Enrollment: early November 2022. *PhD Program in Economics, Analytics and Decision Sciences (EADS)* EADS is an international PhD program that trains students to undertake cutting-edge research in a wide range of economic and social disciplines with a unique multidisciplinary approach that relies on the unifying language of statistics and data science, as well as on selected tools from computer science and psychology. Students actively participate in research seminars, workshops, and conferences. EADS offers exchange programs and double degrees with collaborating institutions around the world, thanks to an established international network. All relevant information about the EADS program here: https://eads.imtlucca.it/ DEADLINE APPLICATION: June 30th , 2022, 12 p.m. *(online application form)* INFO: phdapplications(a)imtlucca.it | +39 0583 4326 530

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PhD call in Mathematics [UniTn - UniVr]
by Luca Di Persio 19 May '22

19 May '22

Dear all, this is to announce the following PhD call in Mathematics [jointly steered by the universities of Trento and Verona] https://www.unitn.it/en/ateneo/1956/announcement-of-selection Deadline for application: 6th of June, 2022, hrs. 4.00 PM (Italian time) Do not hesitate to contact me if you would like to have further info. Best, LuCa __ Luca Di Persio - PhD College of Mathematics Dept. of Computer Science University of Verona strada le Grazie 15 - 37134 Verona - Italy Tel : +39 045 802 7968 Official UniVr spinoff: www.hpa.ai <http://www.hpa8.com>

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Invito: Padua Probability Seminar: Anna Vidotto - gio 19 mag 2022 9:30AM - 10:30AM (CEST) (random@fields.dm.unipi.it)
by giacomo.giorgio07＠gmail.com 19 May '22

19 May '22

Sei stato invitato al seguente evento. Titolo: [Random] Padua Probability Seminar: Anna Vidotto Dear All: Next Wednesday, Anna Vidotto (Università degli Studi di Napoli Federico II) will give a seminar talk on the Excursion Area of Time Dependent Spherical Random Fields, which will be held in person and online via Zoom. Details: * Date and time: Wednesday, May 25, 2022 at 14.30 pm * Place: room 2AB40 at the Department of Mathematics, University of Padua (Torre Archimede, via Trieste, 63, 35121 Padova) * Zoom link: please visit the webpage https://www.math.unipd.it/~bianchi/seminari/ * Title: On the Excursion Area of Time Dependent Spherical Random Fields * Abstract: In this talk, we consider isotropic and stationary real Gaussian time dependent random fields defined on the two dimensional unit sphere S^2 and we investigate the asymptotic behavior, as T tends to infinity , of the excursion area in S^2 × [0, T... Quando: gio 19 mag 2022 9:30AM – 10:30AM Ora dell’Europa centrale - Roma Informazioni per partecipare: Partecipa con Google Meet https://meet.google.com/zcf-ewjr-tmj?hs=224 Calendario: random(a)fields.dm.unipi.it Chi: * giacomo.giorgio07(a)gmail.com - organizzatore * fischer(a)math.unipd.it * random(a)fields.dm.unipi.it Dettagli evento: https://calendar.google.com/calendar/event?action=VIEW&eid=NzIzcDFkOTZ2amRi… Invito da Google Calendar: https://calendar.google.com/calendar/ Hai ricevuto questo messaggio email di cortesia all'account random(a)fields.dm.unipi.it perché sei uno dei partecipanti a questo evento. Per disattivare la ricezione di aggiornamenti futuri per questo evento, rifiuta l'evento. In alternativa, puoi registrarti per un Account Google in https://calendar.google.com/calendar/ e verificare le impostazioni di notifica per l'intero calendario. Se inoltri questo invito potresti consentire al destinatario di inviare una risposta all'organizzatore e di essere aggiunto all'elenco degli invitati oppure di invitare altre persone indipendentemente dallo stato dell'invito o ancora di modificare la tua risposta. Ulteriori informazioni all'indirizzo https://support.google.com/calendar/answer/37135#forwarding

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Next LTI@UniTO Seminars: May 24, Amit Goyal | May 25, Marco Pagano
by Luca Regis 18 May '22

18 May '22

Dear Colleagues, it is my pleasure to bring to your attention the following two seminars in Quantitative Finance, organised by LTI@UniTO. The seminars can be attended online via Zoom at the links accessible via the buttons below. Best regards, Luca Regis -- Luca Regis Associate Professor Department of Economics and Statistics (ESOMAS) University of Torino sites.google.com/view/lucaregis <http://sites.google.com/view/lucaregis> Office: +39 011 670 6065 www.carloalberto.org/lti <http://www.carloalberto.org/lti> <#> <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/dxQszhXdTYSeK8TgXWVwPdgch-yVozm308…> <#> LTI@UniTO and Fondazione Collegio Carlo Alberto are pleased to invite you to the following seminars: <#> *May 24, 2022 | 12:00-13:15* *Predicting Corporate Bond Returns: Merton Meets Machine Learning* *Amit Goyal (University of Lausanne)* <#> *Abstract.* We investigate the return predictability of corporate bonds using big data and machine learning. We find that machine learning models substantially improve the out-of-sample performance of stock and bond characteristics in predicting future bond returns. We also find a significant improvement in the performance of machine learning models when imposing a theoretically motivated economic structure from the Merton model, compared to the reduced-form approach without restrictions. Overall, our work highlights the importance of explicitly imposing the dependence between expected bond and stock returns via machine learning and Merton model when investigating expected bond returns. <#> *To attend in person, register here* <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/hfP4I4mUbx241x0z60A6739Y-00wYiECyk…> <#> *To attend online, join Zoom Meeting* <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/H7wKsG1vuV3OD31wQ_0E5gOGft1OURjriG…> <#> <#> *May 25, 2022 | 12:00 - 13:15* *JAQ of All Trades: Job Mismatch, Firm Productivity and Managerial Quality* *Marco Pagano (University of Naples Federico II)* <#> *Abstract.* Does the matching between workers and jobs help explain productivity differentials across firms? To address this question we develop a job-worker allocation quality measure JAQ by combining employer-employee administrative data with machine learning techniques. The proposed measure is positively and significantly associated with labor earnings over workers’ careers. At firm level, it features a robust positive correlation with firm productivity, and with managerial turnover leading to an improvement in the quality and experience of management. JAQ can be constructed for any employer-employee data including workers’ occupations, and used to explore the effect of corporate restructuring on workers’ allocation and careers. <#> *To attend in person, register here* <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/ykATFHYX2laIzxQ_xgRrxeAEz3ksTLnNgK…> <#> *To attend online, join Zoom Meeting* <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/Qu65mxHMOuyATkYSpHoaTbGG4jZwv1_-MW…> <#> <#> <#> <#> <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/IfoXGKh5By8LrSGugLNRNVSXyH2VOsaTTd…> <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/8usPEOcCcpYYly0bCauwMS_rfjHMGgHJVt…> <#> FONDAZIONE COLLEGIO CARLO ALBERTO Piazza Arbarello 8 - 10122 Torino, Italy phone: +39011 15630 800 segreteria(a)carloalberto.org - www.carloalberto.org Facebook <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/96qDEBjI389G7GVS3NgHy4QU5ODhiSBUXH…> Twitter <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/NblUBI8B5HmNemhQAOs_hH9Lb0xHqj4qYn…> LinkedIn <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/rMMfajyr067kRoDawTi2FFsw8dBZwyxWPW…> Instagram <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/0wIj1P36GYdj7O34J7nWI5VyNMMLDGzqBJ…> Youtube <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/-09AvrjEn7eE8yYbc-ZCF8ERm7rdddPHti…> <#> *INFORMATION UNDER THE NEW GENERAL DATA PROTECTION REGULATION (GDPR)* Your personal information has been gathered for the exclusive purpose of informing you about the Collegio's initiatives, considering our and your legitimate interest or your consent. If you wish to have your personal data modified please contact Fondazione Collegio Carlo Alberto, piazza Arbarello 8, 1022 Torino, Italy - phone:+39011 15630 800 - privacy(a)carloalberto.org To find out about the policies regarding the processing of personal data pursuant to articles 13-14 of EU Regulation 2016/679, consult the information at the following link https://www.carloalberto.org/privacy/ <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/w47WAYiiyoXuTspFVWdMj21Cro1sSu1S1z…> *Unsubscribe* <https://4z5y5.r.a.d.sendibm1.com/mk/un/VRIj3q-1RFls3KVxbpZF_Uj0ukc9FDmZZHg7…> <#> © 2021 Fondazione Collegio Carlo Alberto

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Fwd: Cross fertilization between Physics and Mathematics
by Gustavo Posta 18 May '22

18 May '22

> Dear colleagues, > > it is our pleasure to announce the conference > > "Cross fertilization between Physics and Mathematics" > an event in honor of Giovanni Jona Lasinio. > > The conference will be held in presence (with online broadcast) > at the Accademia Nazionale dei Lincei on May 25, 2022. > > Starting at 3pm we will have Lectiones Magistrales by > > Bernard Derrida (ENS) > Giovanni Gallavotti (Università La Sapienza) > Martin Hairer (Imperial College) > > Further details, including the registration form and the details of the live broadcast, can be found on the webpage > > https://www1.mat.uniroma1.it/~desole/2022-convegno-gianni/ <https://www1.mat.uniroma1.it/~desole/2022-convegno-gianni/> > > With our best regards, > > the organizing committe: > Lorenzo Bertini, Alberto De Sole, Roberto Longo, Fabio Martinelli, Carlo Presilla ---------------------------------------------------------------- Gustavo Posta Dipartimento di Matematica Università di Roma "la Sapienza" P.le A. Moro 2, 00185 Roma Italy web: http://www1.mat.uniroma1.it/~posta e-mail: gustavo.posta(a)uniroma1.it phone: +39-06-4991-4969 ----------------------------------------------------------------

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Workshop in memory of Francesca Romana Nardi - 18-22 July 2022
by Gianmarco Bet 18 May '22

18 May '22

Dear colleagues, We are organising a workshop in memory of our colleague and friend Francesca Romana Nardi, who passed away on October 21, 2021. Colleagues from all over Italy and Europe will gather in Florence in the week of July 18-22 to talk about mathematical topics that were very close to her heart. We want to celebrate her life, her scientific contributions, and the warmth that she brought to our community. This 5-day workshop is open to everyone who’s interested. For precise details, such as venue, invite speakers, and program, please see: https://www.eurandom.tue.nl/event/celebrating-francesca/ REGISTRATION (Deadline for registration: June 30) Registration is free of charge. For organizational purposes we kindly ask all participants to fill in the following registration form: https://www.eurandom.tue.nl/registration-francesca-romana-nardi-a-life-in-p… <https://www.eurandom.tue.nl/registration-francesca-romana-nardi-a-life-in-p…> If you would like to participate and you need travel support, we might be able to help you. Please write an email to: nardi.event(a)gmail.com MEMORIAL SESSION On Thursday, July 21, there will be a streamed memorial session in the afternoon (the only online activity of the workshop!). The idea of this session is to give the floor to both participants, and colleagues that cannot join us physically in Florence for this event, who want to share a few personal words, memories or anecdotes about Francesca. Shall you give this short contribution during this memorial session, please contact us before the event at nardi.event(a)gmail.com, we will be happy to schedule your intervention (for which you should consider up to 5 minutes). Please feel free to inform about this session anyone who might be interested in contributing. Kind regards, Gianmarco Bet, on behalf of the organisers, Luisa Andreis, Luca Avena, Gianmarco Bet, Alexandre Gaudilliere, Elisabetta Scoppola, Alessandro Zocca ---------------------------------------------------------------------- Gianmarco Bet (he/him) Junior researcher https://gianmarco.bet Phone: (+39) 055 2751491 Department of Mathematics and Informatics "U. Dini" University of Florence Viale Morgagni, 65 50134 Firenze, Italy Office 64 ----------------------------------------------------------------------

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