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Save the date: OWABI live from BayesComp - 19th June 1pm UK time
by Massimiliano Tamborrino 09 Jun '25

09 Jun '25

Dear all, the next OWABI seminar https://www.warwick.ac.uk/owabi, the last of this Season, is also going to be a special one, featuring two selected talks live from BayesComp https://bayescomp2025.sg/! The two talks are scheduled on Thursday the 19th June at 1pm UK time (note the different date and time!), given by * Filippo Pagani (University of Warwick): Approximate Bayesian Fusion * Maurizio Filippone (KAUST): GANs Secretly Perform Approximate Bayesian Model Selection with abstracts reported below. The talks will be streamed on Zoom at the link: https://monash.zoom.us/j/81050994376?pwd=aF52Ab2oUlNYPO251d4nDw0jXRemia.1<https://www.google.com/url?q=https%3A%2F%2Fmonash.zoom.us%2Fj%2F81050994376…> Meeting ID: 810 5099 4376 Passcode: 137607 1st OWABI Talk: 1-1.30pm Uk time Speaker: Filippo Pagani<https://filippopagani.github.io/> (University of Warwick) Title: Approximate Bayesian Fusion Abstract: Bayesian Fusion is a powerful approach that enables distributed inference while maintaining exactness. However, the approach is computationally expensive. In this work, we propose a novel method that incorporates numerical approximations to alleviate the most computationally expensive steps, thereby achieving substantial reductions in runtime. Our approach retains the flexibility to approximate the target posterior distribution to an arbitrary degree of accuracy, and is scalable with respect to both the size of the dataset and the number of computational cores. Our method offers a practical and efficient alternative for large-scale Bayesian inference in distributed environments. 2nd OWABI Talk: 1.30-2pm Uk time Speaker: Maurizio Filippone<https://www.kaust.edu.sa/en/study/faculty/maurizio-filippone> (KAUST) Title: Approximate Bayesian Fusion Abstract: Generative Adversarial Networks (GANs) are popular models achieving impressive performance in various generative modeling tasks. In this work, we aim at explaining the undeniable success of GANs by interpreting them as probabilistic generative models. In this view, GANs transform a distribution over latent variables Z into a distribution over inputs X through a function parameterized by a neural network, which is usually referred to as the generator. This probabilistic interpretation enables us to cast the GAN adversarial-style optimization as a proxy for marginal likelihood optimization. More specifically, it is possible to show that marginal likelihood maximization with respect to model parameters is equivalent to the minimization of the Kullback-Leibler (KL) divergence between the true data generating distribution and the one modeled by the GAN. By replacing the KL divergence with other divergences and integral probability metrics we obtain popular variants of GANs such as f-GANs, Wasserstein-GANs, and Maximum Mean Discrepancy (MMD)-GANs. This connection has profound implications because of the desirable properties associated with marginal likelihood optimization, such as (i) lack of overfitting, which explains the success of GANs, and (ii) allowing for model selection, which opens to the possibility of obtaining parsimonious generators through architecture search. We are looking forward to seeing you at the next OWABI seminar(s), 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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Fwd: 1 year postdoc in Probability at Warwick (deadline 19/06/25)
by Bruno Toaldo 08 Jun '25

08 Jun '25

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YEPXX | 23-27 June | final announcement
by Simone Baldassarri 06 Jun '25

06 Jun '25

Dear colleagues, This is the final announcement for the 20th edition of the Young European Probabilists (YEP) workshop *Interacting Particle Systems on Random Structures, *which will take place on *23-27 June, 2025* in *EURANDOM* at Eindhoven University of Technology.We inform you that the registration closes on *Sunday 15 June 2025.* Young researchers are encouraged to participate and contribute with a poster presentation by submitting their proposals through the registration form. Please visit the website of the event YEPXX | Interacting Particle Systems on Random Structures <https://www.eurandom.tue.nl/event/yepxx-interacting-particle-systems-on-ran…> for further information. We would be grateful if you could circulate the announcement among potentially interested researchers. Please feel free to contact us for any additional information. Looking forward to meeting you in Eindhoven! The organizing committee, Simone Baldassarri, Remco van der Hofstad, Vanessa Jacquier, Matthias Löwe

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course prof. Z. Brzeniak - Pavia - 11-27 june
by Enrico Priola 06 Jun '25

06 Jun '25

Dear colleagues, we are glad to announce the following course by prof. Zdzislaw Brzezniak at the Department of Mathematics in Pavia (period: june 11-27) - STOCHASTIC DIFFERENTIAL EQUATIONS - (https://unipv.unifind.cineca.it/resource/af/495318) Lectures in Sezione Laureati of Collegio Nuovo (Via Abbiategrasso 404, Pavia): 1. Wednesday 11 June, 9-11 and 14-15 2. Thursday 12 June, 12-13 and 14-16 3. Friday 13 June, 9-11 and 14-15 4. Thursday 19 June, 9-11 and 14-15 5. Friday 20 June, 12-13 and 14-16 6. Wednesday 25 June, 9-11 and 14-15 7. Thursday 26 June, 9-11 and 14-15 8. Friday 27 June, 9-11 and 14-15 All the best Enrico Priola -- Enrico Priola Dipartimento di Matematica, Università di Pavia Via Adolfo Ferrata 5, 27100 Pavia tel +39 0382 985639

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Seminario PRISMA venerdì 6 giugno 2025 - S. Mazzonetto & P. Pigato
by Sonia Mazzucchi 06 Jun '25

06 Jun '25

Seminari on-line del gruppo UMI - PRISMA (http://www.umi-prisma.polito.it/) I seminari PRISMA hanno un formato di "colloquium" per creare un'occasione di scambio e discussione con tutta la comunità dei probabilisti e statistici italiani. Ogni giornata comprende due relatori che tengono due seminari di 30 minuti strettamente connessi, per presentare alla comunità una prospettiva sul proprio ambito di ricerca. Da quest'anno le registrazioni dei seminari vengono pubblicate sul canale YouTube dell'UMI: https://youtube.com/playlist?list=PLmySpc-jrtAMq84VH71evyqPc1hl6eEQb Il prossimo appuntamento è per oggi *venerdì 6 giugno* 2025. I relatori saranno *Sara Mazzonetto* (Université de Lorraine) e *Paolo Pigato* (Università di Roma 2 “Tor Vergata”) che parleranno di: *Diffusioni a soglia e il ruolo del tempo locale* con il seguente orario: 16:00 Primo seminario 16:30 Pausa e discussione 16:45 Secondo seminario 17:15 Conclusione e discussione Trovate di seguito il riassunto. I seminari verranno trasmessi via Zoom al seguente link: https://unitn.zoom.us/j/82271416480 ID riunione: 822 7141 6480 Codice d’accesso: 130382 Vi aspettiamo numerosi! Alberto Chiarini e Sonia Mazzucchi %%%%%%%%%%%%%%%%%%%%%%%%%%%% RELATORI: Sara Mazzonetto (Université de Lorraine) e Paolo Pigato (Università di Roma 2 “Tor Vergata”) TITOLO: Diffusioni a soglia e il ruolo del tempo locale RIASSUNTO: Le diffusioni a soglia sono soluzioni di equazioni differenziali stocastiche i cui coefficienti cambiano in modo discontinuo a seconda della posizione del processo rispetto a delle barriere (soglie). Sono usate nella modellizzazione di vari fenomeni, in finanza/economia, ingegneria e altre scienze. In questo seminario, daremo un’introduzione a questi processi dal punto di vista matematico e parleremo delle loro applicazioni. Considereremo poi alcuni problemi di inferenza dei parametri, discutendo risultati asintotici sotto diverse ipotesi e sottolineando le difficoltà tecniche provenienti in particolare dalla connessione tra discontinuità, moto browniano skew e tempi locali. .%%%%%%%%%%%%%%%%%%%%%%%%%%%%

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QFinLab Seminar - Marco Tolotti (Università Ca’ Foscari Venezia) - 9/6/2025, 12:15 @ Department of Mathematics, Politecnico di Milano
by Alessandro Calvia 05 Jun '25

05 Jun '25

Dear colleagues, you are all invited to participate in the following seminar organized by QFinLab - Department of Mathematics, Politecnico di Milano. Monday, 9 June 2025, 12.15-13.15 Seminar room, third floor, building 14, Via Bonardi 9, Milano (Leonardo Campus) Marco Tolotti (Università Ca’ Foscari Venezia) Title: Market Dynamics, Learning, and the Equity Premium Puzzle in an Agent-Based Model of Information Acquisition. Abstract: We analyze a financial market with a large number of investors who use an imitation-based learning mechanism to choose among various strategies that differ in the amount and quality of information they incorporate. Agents’ strategies evolve through a straightforward learning mechanism in which traders occasionally imitate more successful strategies adopted by peers they encounter. In this context, equilibrium is defined as a state where investors, on average, win half the time and lose in the remaining periods. Through an agent-based model, we show that at equilibrium, most investors rely on a limited number of strategies. In most scenarios, two strategies dominate: overly cautious traders, who hold little equity and capture the largest market share, and informed traders, who achieve higher average profits. Our model can help to justify the existence of an equity premium puzzle: in equilibrium, the higher mean profit of informed investors is associated with a median profit that is equal to that of more prudent or misinformed investors. All news can be found on the QFinLab webpage<https://www.qfinlab.polimi.it/seminars-and-meetings/>. The organizers: Michele Azzone and Alessandro Calvia.

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Announcement for upcoming StatPhys29 Satellite Conference
by Anna Gallo 05 Jun '25

05 Jun '25

Dear all, On behalf of the organizers, I am pleased to announce the upcoming StatPhys29 Satellite Conference: *Perspectives in Nonlinear Dynamics 2025:* *from Dynamical Systems to Artificial Intelligence,* which will be held from July 21 to 25, 2025, at the IMT School in Lucca. Click HERE <https://pnld2025.imtlucca.it/registration> to apply: *deadline June 15, 2025!* For more information, visit the website https://pnld2025.imtlucca.it/ or contact the organizers. Young researchers and PhD students are encouraged to apply for a short talk! Don’t hesitate to forward this invitation to anyone who could be interested. Best regards, PNLD Committee

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Conference in Parma
by Davide ADDONA 05 Jun '25

05 Jun '25

Dear colleagues, It is a great pleasure for me to announce the upcoming conference Evolution Equations & Functional and Analytical Methods for PDEs which will be held in Parma, Italy, from September 1 to September 5, 2025, at the Santa Elisabetta Conference Center on the campus of the University of Parma. During the conference, expert researchers in the field of evolution equations, approached from both deterministic and stochastic perspectives, will present recent results in the study of evolutionary problems. Participation is free of charge, but registration is mandatory. Young researchers are encouraged to apply for a short talk (15 minutes) by registering on the website of the conference and filling out the registration form no later than July 15th, 2025. For more information, visit the web site https://sites.google.com/unisa.it/ee-fam-for-pdes/home or contact the organizers at the email address ee2025parma(a)gmail.com The organizers

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Intensive short PhD courses in Mathematical Finance
by Athena Picarelli 05 Jun '25

05 Jun '25

Dear colleagues, We are pleased to announce that, in conjunction with the 12th General AMaMeF Conference that will take place at the Department of Economics of the University of Verona, on the 23-27 of June, we will host a series of special seminars led by some of the distinguished plenary speakers. These seminars, taking place during the weeks immediately preceding and following the Conference, are specifically designed for PhD students and offer an exceptional opportunity to engage with advanced topics in mathematical finance and to interact closely with leading experts in the field. All the seminars will take place in aula Vaona (Polo Santa Marta, Via Cantarane 24, 1st floor). Here the program: - *XUNYU ZHOU (Columbia University)* "Continuous Time Reinforcement Learning" Tuesday 17 June, h. 9.30-11.30 Wednesday 18 June, h. 9.30-11.30 Thursday 19 June, h. 9.30-11.30 - *SAMUEL COHEN (University of Oxford)* "Deep Galerkin method for PDEs": Monday 30 June, h. 10.00-12.00 Tuesday 1 July, h. 10.00-12.00 Wednesday 2 July, h. 10.00-12.00 - *AGOSTINO CAPPONI (Columbia University)* "Advances in Mathematics and Machine Learning for Finance" : Monday 30 June, h. 14.00-16.00: Microstructure of automated market makers. Introduction of the main properties and conceptual innovation of AMMs, and draw parallel with limit order books (CLOB). It will be shown how the convexity of the AMM pricing curve and depth of liquidity pools relates to price impact. It will be highlighted how mathematical control techniques can be used to decide on the best execution venues (AMMs vs CLOBs), and show what data can be used to validate model predictions Tuesday 1 July, h. 14.00-16.00: Machine Learning in Finance. State-of-art ML techniques, and how they can be used to solve financial mathematics problems. Introduction of diffusion maps, graph machine learning methods, and causal investing. Wednesday 2 July, h. 14.00-16.00: Goal-Based Wealth Management. A new framework to solve dynamic portfolio optimization problems in finance will be discussed. Rather than postulating risk-averse utility functions, the investor will specify deadlines and amounts of liabilities to be matched by an investment strategy. The basic framework, as well as future extensions and avenues of research, including the inclusion of insurance funds, stochastic deadlines, and connections to multiple optimal stopping will be presented. Best wishes, Athena Picarelli -- *Athena Picarelli* Professor Coordinator of the PhD program in Economics and Finance Dipartimento di Scienze Economiche Università di Verona Polo Santa Marta, Verona.

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Seminario Anderson Melchor Hernandez - Politecnico di Milano - 12 Giugno 2025
by Luca Scarpa 04 Jun '25

04 Jun '25

Si segnala il seguente seminario a tutti gli interessati. Giovedì 12 Giugno 2025, ore 11:00. Aula Seminari III Piano, Dipartimento di Matematica, Politecnico di Milano. Speaker: Anderson Melchor Hernandez, Università di Bologna. Title: Convergence of quantum neural networks at infinite width Abstract: Quantum neural networks constitute the quantum version of deep neural models. These new models are based on quantum circuits and generate functions given by the expectation values of a quantum observable measured on the output of a quantum circuit made by parametric one-qubit and two-qubit gates. The parameters of the circuit encode both the input data and the parameters of the model itself. These parameters are typically optimized by gradient descent, which involves iterative adjustment to minimize a cost function and improve the performance of the quantum circuit in the processing and analysis of data. Significant progress has been made in addressing the question of whether training can perfectly fit the training examples while simultaneously avoiding overfitting. A fundamental breakthrough has been the proof that, in the limit of infinite width, the probability distribution of the function generated by a deep neural network trained on a supervised learning problem converges to a Gaussian process. Recent developments have inspired renewed interest in quantum machine learning, raising the question of whether quantum neural networks exhibit analogous properties. In this presentation, I will explore some of the recent advancements in this area, highlighting key insights and findings. This talk is based on joint collaborations with Giacomo de Palma, Filippo Girardi, and Davide Pastorello. Link Zoom: https://polimi-it.zoom.us/j/95413417796?pwd=DzfocIrWXSq96LbS0fjekatHjSSyOe.1 Link Seminario Polimi: https://www.mate.polimi.it/Eventi/?id=2602&sezione_di_ricerca=&stringa=&sub… ----- Prof. Luca Scarpa, PhD Associate Professor in Probability Department of Mathematics Politecnico di Milano Via E. Bonardi 9 20133 Milano, Italy e.mail: luca.scarpa(a)polimi.it<mailto:luca.scarpa@polimi.it> url: https://sites.google.com/view/lucascarpa

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