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Berlin-Oxford International Research Training Group (IRTG) 2544 “Stochastic Analysis in Interaction”
by Tiziano De Angelis 23 Dec '19

23 Dec '19

Dear All, The advert below might be of interest to bright students interested in PhD studies abroad. Have a good Christmas break and a Happy New Year. Tiziano --------------------------------------------- The recently established Berlin-Oxford International Research Training Group (IRTG) 2544 “Stochastic Analysis in Interaction” offers 8 PhD positions (75% TVL E 13, about 1700 EUR after taxes, social security, ...) for 3 years starting April 1st, 2020, or soon thereafter. Funded by the Deutsche Forschungsgemeinschaft (DFG), the IRTG is a joint research initiative of the stochastic analysis group of FU, HU, TU and WIAS Berlin with its counterpart at the University of Oxford. The advertised positions will be based in Berlin and will offer ample opportunities to interact also with members of the Oxford team, most notably in a 6-months exchange. Embedded in a truly international environment, the IRTG students will get excellent research training in a structured programme focussing on challenges at the mathematical foundations of Stochastic Analysis as well as on challenges arising from its various applications, e.g., in physics, biology, finance or data science. The combined expertise from the Berlin and Oxford groups will provide a significant breadth in depth and fertile ground for our students' ambitious research ideas. Successful candidates will have an MSc degree (or equivalent) in Mathematics (or a closely related field), strong knowledge of stochastic analysis, and feel eager to engage in the exchange of ideas with the teams in both Berlin and Oxford. Deadline for applications is January 20, 2020 (for now). Please see https://tub.stellenticket.de/de/offers/74386/ for the official job ad and for instructions how to apply. Our IRTG webpage www.math.tu-berlin.de/irtg offers more information on the Berlin-Oxford IRTG 2544.

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RTD-B position in SECS-S/06 in Milano - call for interest
by Giovanni Puccetti 21 Dec '19

21 Dec '19

RTD-B position in Mathematical Methods for Economics, Finance and Actuarial Science in Milano - call for interest The Department of Economics, Management and Quantitative Methods (DEMM) of the University of Milano launches a call for expressions of interest to identify potential candidates for a RTD-B position in the sector 13/D4 (SECS-S/06), Mathematical Methods for Economics, Finance and Actuarial Science. The Department has been recently financed by the Italian Ministry of Education, University and Research under the program “Departments of Excellence” for the 2018/2022 period. Requests for information and expressions of interest, including a CV with publication record, must be sent to davide.parenti(a)unimi.it by January 10, 2020. Please note that this is a call for interest, not a job vacancy announcement. The Department will advertise job vacancies in 2020.

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Post-Doc at Luxembourg University
by Giovanni Peccati 20 Dec '19

20 Dec '19

Dear Colleagues, I would like to announce the opening of a post-doc position in my group at *Luxembourg University*, in the large domain of *stochastic analysis and applications*. The first possible starting date is *March 1st, 2020*. The length of the contract is two years, extendable up to 5 years. The deadline for applications is *January 31, 2020.* All information, together with the online application form, can be found here: http://emea3.mrted.ly/2db95 Please do not hesitate to share the news of this opportunity with potentially interested candidates. All my best, Giovanni -- Prof. Giovanni Peccati ------------------------------------------ UR en Mathématiques Faculté des Sciences, de la Technologie et de la Communication ------------------------------------------ Université du Luxembourg ----------------------------------------- homepage: http://sites.google.com/site/giovannipeccati/Home E-mail: giovanni.peccati(a)gmail.com

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ricertatore tipo B MAT/06 L'Aquila, proroga scadenza
by davide gabrielli 20 Dec '19

20 Dec '19

Segnalo ancora una volta il bando da ricercatore a tempo determinato di tipo B nel settore scientifico disciplinare MAT/06 Probabilità e statistica matematica presso il Dipartimento di ingegneria e scienze dell'informazione e matematica dell'Università dell'Aquila in quanto la scadenza del bando è stata prorogata. Il bando e le informazioni si trovano al seguente link https://www.univaq.it/section.php?id=1532 Nuova scadenza 02-Gennaio-2020 Si prega di darne la massima diffusione, cordiali saluti Davide Gabrielli

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Academic openings at Roma "la Sapienza"
by Gustavo Posta 19 Dec '19

19 Dec '19

The Mathematics Department of Sapienza University of Rome invites applications for academic openings at the Associate and/or Full Professor level from any fields in Mathematics covered through a direct call procedure. All area of Mathematics will be considered. Candidates are encouraged to apply by February 28, 2020. For more details see: https://www.mat.uniroma1.it/dipartimento/chiamate-dirette ---------------------------------------------------------------- Gustavo Posta Dipartimento di Matematica Guido Castelnuovo 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 ------------------------------------------------------------------ -- ________________________________________________________ Le informazioni contenute in questo messaggio di posta elettronica sono strettamente riservate e indirizzate esclusivamente al destinatario. Si prega di non leggere, fare copia, inoltrare a terzi o conservare tale messaggio se non si è il legittimo destinatario dello stesso. Qualora tale messaggio sia stato ricevuto per errore, si prega di restituirlo al mittente e di cancellarlo permanentemente dal proprio computer. The information contained in this e mail message is strictly confidential and intended for the use of the addressee only. If you are not the intended recipient, please do not read, copy, forward or store it on your computer. If you have received the message in error, please forward it back to the sender and delete it permanently from your computer system.

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I: Tenure Track Professorship of Stochastic Analysis (University of Konstanz, Germany)
by Marco Alessandro Fuhrman 19 Dec '19

19 Dec '19

Buongiorno. Inoltro un avviso di una posizione a Konstanz in Analisi stocastica. https://www.uni-konstanz.de/stellenangebote/stellenauswahl.php/stellenauswa… Cordiali saluti. Marco Fuhrman <signaturebeforequotedtext></signaturebeforequotedtext> <signatureafterquotedtext></signatureafterquotedtext>

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Assistant Professor and 2 Associate Professor, Dept. of Statistics, University of Warwick
by Massimiliano ... 18 Dec '19

18 Dec '19

Dear all, we are searching for 1 Assistant Professor (permanent) and 2 Associate Professors to join our team at the Department of Statistics, University of Warwick. The deadline for applying is January 12, 2020. For more information on the Assistant Professor, please visit https://atsv7.wcn.co.uk/search_engine/jobs.cgi?SID=amNvZGU9MTg0ODA4NyZ2dF90… For more information on the Associate Professor, please visit https://atsv7.wcn.co.uk/search_engine/jobs.cgi?owner=5062452&ownertype=fair… Best regards, Massimiliano ----------------- Dr. Massimiliano Tamborrino Assistant Professor Department of Statistics University of Warwick https://warwick.ac.uk/fac/sci/statistics/staff/academic-research/tamborrino

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Fwd: 2 years PostDoc position in dynamical systems
by Stefano Marmi 18 Dec '19

18 Dec '19

Dear Collegue, I would be grateful if you could bring to the attention of your best postgraduate students and PhD holders that a two years long research position in “Dynamical systems" is available at the Centro De Giorgi - Scuola Normale Superiore in Pisa. PhD students can also apply, provided they obtain their PhD no later than October 1st 2020. Deadline for application: *7th January 2020 (11.59 PM Italian time)*. The total two-year gross remuneration, inclusive of all taxes, is € 66,590.00 for each contract, corresponding to a monthly salary of approximately 2,000 Euros. An additional yearly research allowance of 1,000 Euros for exchange visits is also provided. The mathjobs announcement is available here: https://www.mathjobs.org/jobs/jobs/15211 To submit applications please link to the *ANNOUNCEMENT* at https://wwwold.sns.it/bando/assegni-di-ricerca-denominati-%E2%80%9Cjunior-v… and read the *OFFICIAL CALL * https://wwwold.sns.it/sites/default/files/documenti/05-11-2019/584call.pdf Applicants must submit their applications *SOLELY* by using the on-line procedure "SerSe" (https://serse.sns.it/en/) <https://serse.sns.it/en/> available on the Scuola Normale Superiore website and fulfill ALL the tender's requirements. *No other submission method will be accepted.* For additional information e-mail *job.opportunities(a)sns.it <job.opportunities(a)sns.it>*. Best regards Stefano Marmi

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EFI5 Workshop: extended deadline and YITP prizes (fwd)
by Tiziano Vargiolu 17 Dec '19

17 Dec '19

===================================== CALL FOR PAPERS - EXTENDED DEADLINE Dear All, we wish to inform you that the deadline for paper submission for the fifth edition of the Energy Finance Italia Workshop - EFI5, has been EXTENDED TO DECEMBER 23rd, in order to allow for a broader participation also to the YITP research prizes. We remind that, if our application to the Young Investigator Training Program (YITP) of the ACRI (Associazione Casse di Risparmio Italiane) will be funded, we will grant several 1-month positions to young researchers, coming from outside Italy, to spend in one Italian research institution of the network. In order to be eligible, the young researcher should submit a presentation to the workshop, and choose at least three research institutions to spend their grant at. You can find all the information on the website of the workshop: - http://host.uniroma3.it/eventi/efi5/ (general information) - http://host.uniroma3.it/eventi/efi5/html/institutional_support.html (YITP positions) All the best -------------------------------------------------------------------------- Tiziano Vargiolu Dipartimento di Matematica Phone: +39 049 8271383 Universita' di Padova Fax: +39 049 8271428 Via Trieste, 63 E-mail: vargiolu(a)math.unipd.it I-35121 Padova (Italy) WWW: http://www.math.unipd.it/~vargiolu --------------------------------------------------------------------------

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JOB: Tenured senior lectureship in Mathematical Statistics & Data Science, Gothenburg, Sweden
by Massimiliano ... 17 Dec '19

17 Dec '19

-------- Forwarded Message -------- Subject: JOB: Tenured senior lectureship in Mathematical Statistics & Data Science, Gothenburg, Sweden Date: Mon, 16 Dec 2019 18:17:54 +0100 From: Umberto Picchini <umberto.picchini(a)gmail.com><mailto:umberto.picchini@gmail.com> To: allstat(a)JISCMAIL.AC.UK<mailto:allstat@JISCMAIL.AC.UK> We are searching for a Senior Lecturer to the Division of Applied Mathematics and Statistics who would contribute to our expertise in the area of mathematical statistics towards data science. The position is permanent (tenured). The successful candidate is expected to develop and maintain a high-level research program in mathematical statistics with emphasis on computer intensive methods and participate in the undergraduate and graduate level teaching in mathematical statistics at our department. The successful candidate will strengthen and complement the research performed at theDivision of Applied Mathematics and Statistics<https://www.chalmers.se/en/departments/math/organisation/applied-mathematic…> which is internationally recognized in areas such as * Bayesian statistics, forensic statistics, * spatial statistics, extreme value theory, * biostatistics, bioinformatics, and systems biology, * stochastic differential equations, computational mathematics. We are particularly interested in enhancing our AI@MS<https://www.chalmers.se/en/departments/math/research/research-groups/AIMS/P…> group on Artificial Intelligence at Mathematical Sciences. Gothenburg is the second largest city in Sweden, located in the beautiful east coast. Read more at https://www.goteborg.com/en/ Deadline for applications: 29 February 2020. Full info and instructions to apply are at <https://www.gu.se/english/about_the_university/job-opportunities/vacancies-…> https://www.gu.se/english/about_the_university/job-opportunities/vacancies-… For further information please contact: Bernt Wennberg, Head of Department, tel +46 (0)31-772 53 26, email wennberg(a)chalmers.se <mailto:wennberg@chalmers.se>Annika Lang, Deputy Head of Division, tel +46 (0)31-772 5356, email annika.lang(a)chalmers.se <mailto:%20annika.lang@chalmers.se>Serik Sagitov, Head of Division, tel +46 (0)31-772 5351, email serik(a)chalmers.se<mailto:serik@chalmers.se> -- _________________________________________________________________________ Umberto Picchini picchini(a)chalmers.se<mailto:picchini@chalmers.se> Associate Professor https://umbertopicchini.github.io/ Department of Mathematical Sciences Twitter: @uPicchini Gothenburg University and Phone (office): +46 317 726 414 Chalmers University of Technology _________________________________________________________________________

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Fwd: I: Assistant Professorship at Chalmers
by Mario Maurelli 16 Dec '19

16 Dec '19

---------- Forwarded message --------- Da: Mario Maurelli <mario.maurelli(a)unimi.it> Date: lun 2 dic 2019 alle ore 12:01 Subject: I: Assistant Professorship at Chalmers To: mario.maurelli <mario.maurelli(a)sns.it> I wish to draw your attention to an assistant professorship position at the Department of Mathematical Sciences at Chalmers and the University of Gothenburg which has just been announced. The theme of the position is the combination of optimal transport, machine learning, and geometry. The position is very wealthy, as it includes funding for one PhD student, 5 post-doc years, traveling, etc. The ideas is that the candidate should have enough funding to start building his/her own research group. If you know any suitable candidates I would be grateful if you could pass on the information to them. The announcement of the position, including detailed information of how to apply, is available at this link: https://www.chalmers.se/en/about-chalmers/Working-at-Chalmers/Vacancies/Pag… The dead-line for applications is 10 February 2020. Best wishes, Klas Modin ___________________ Klas Modin Associate Professor Department of Mathematical Sciences Chalmers University of Technology and University of Gothenburg email: klas.modin(a)chalmers.se web: http://klasmodin.wordpress.com orcid: http://orcid.org/0000-0001-6900-1122

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Seminario Lionel Levine (Cornell), Università La Sapienza
by Silvestri, Vittoria 16 Dec '19

16 Dec '19

PREANNUNCIO DI SEMINARIO (seguirà un reminder) Seminario di Probabilità Speaker: Lionel Levine (Cornell University) Title: Random walks with local memory Martedì 7 Gennaio, ore 14:00 (sharp) Aula di Consiglio Dipartimento di Matematica Università di Roma La Sapienza Piazzale Aldo Moro, 5 Abstract: The theme of this talk is walks in a random environment of "signposts" altered by the walker. I'll focus on three related examples: 1. Rotor walk on Z^2. Your initial signposts are independent with the uniform distribution on {North,East,South,West}. At each step you rotate the signpost at your current location clockwise 90 degrees and then follow it to a nearest neighbor. Priezzhev et al. conjectured that in n such steps you will visit order n^{2/3} distinct sites. I'll outline an elementary proof of a lower bound of this order. The upper bound, which is still open, is related to a famous question about the path of a light ray in a grid of randomly oriented mirrors. This part is joint work with Laura Florescu and Yuval Peres. 2. p-rotor walk on Z. In this walk you flip the signpost at your current location with probability 1-p and then follow it. I'll explain why your scaling limit will be a Brownian motion perturbed at its extrema. This part is joint work with Wilfried Huss and Ecaterina Sava-Huss. 3. p-rotor walk on Z^2. Rotate the signpost at your current location clockwise with probability p and counterclockwise with probability 1-p, and then follow it. This walk “organizes” its environment by destroying cycles of signposts. A native environment -- stationary in time, from your perspective as the walker -- is an orientation of the uniform spanning forest, plus one additional edge. This part is joint work with Swee Hong Chan, Lila Greco, and Peter Li: https://arxiv.org/abs/1809.04710 ******************************** Vittoria Silvestri Assistant Professor Department of Mathematics University "La Sapienza" Piazzale Aldo Moro, 5 00185 - Rome ********************************

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Seminar at Scuola Normale Superiore, 17 December 2019, Luciano Campi
by Giulia Livieri 13 Dec '19

13 Dec '19

Dear all, On Tuesday, 17 December 2019 — at 11:30 — at the Scuola Normale Superiore (Room: Aula Bianchi Scienze) Prof. Luciano Campi (London School of Economics) will hold the following Seminar: Title : Correlated Equilibria and Mean Field Game Abstract: Mean field games are limit models for symmetric N-player games, as N tends to infinity, where the pre-limit models are solved in terms of Nash equilibria. A generalization of the notion of Nash equilibrium, due to Robert Aumann (1973, 1987), is that of a correlated equilibrium. Here, we discuss, in a simple non-static setting, the mean field game limit for correlated equilibria. We give a definition of correlated mean field game solution, prove that it arises as limit of N-player correlated equilibria in restricted (”open-loop”) Markov feedback strategies, and show how to construct approximate N-player equilibria starting from a correlated mean field game solution. We also compare our definition to the one by Lacker (2018) of weak solutions for mean field games without a common noise. (Joint work with Markus Fischer, Padova University) Fill free to forward this announcement to your colleagues. Best Giulia Livieri Assegnista di ricerca Scuola Normale Superiore Piazza dei Cavalieri, 7, 56126 Pisa PI room 65

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Doppio Seminario PELUCHETTI & KOWAL
by Pierpaolo De Blasi 13 Dec '19

13 Dec '19

Mercoledi 18 Dicembre 2019, presso il nuovo edificio del Collegio Carlo Alberto, in Piazza Arbarello 8, Torino, si terranno i seguenti due seminari: ———————————————————————— ore 11.00 Stefano PELUCHETTI (Cogent Labs Tokyo) DEEP NEURAL NETWORKS AND STOCHASTIC PROCESSES We review deep neural networks and their training, and then focus on the connection between neural networks and stochastic processes. Deep neural networks at initialization correspond to prior models in function space, and under appropriate assumptions they converge to Gaussian processes in the limit of infinite width. While this connection holds "a priori", it is possible to derive similar results for "a posteriori" training via gradient descent. In this talk we discuss these and related results, and we introduce a recent line of research which generalizes established results to non-Gaussian initializations and stochastic processes arising in the limit of infinite depth. ———————————————————————— ore 12.00 Daniel KOWAL (Rice University) SCALABLE BAYESIAN INFERENCE AND SUMMARIZATION FOR FUNCYIONAL DATA Modern scientific monitoring systems, such as wearable and implantable devices, commonly record data over a continuous domain at high resolutions. These functional data are high-dimensional, strongly correlated, and usually measured concurrently with other variables of interest. Bayesians models for functional data are particularly appealing: they accommodate multiple dependence structures, handle missing or irregularly-spaced data, and provide regularization via shrinkage priors. However, these models are often complex, computationally intensive, and difficult to interpret. This talk will focus on two fundamental challenges for Bayesian functional data analysis: (1) constructing sufficiently flexible and scalable functional regression models and (2) extracting interpretable posterior summaries. The proposed modeling framework is nonparametric and uses an unknown functional basis to learn prominent functional features, which are associated with scalar predictors within a regression model. A customized projection-based Gibbs sampler provides posterior inference with linear time complexity in the number of predictors, which is empirically faster than existing frequentist and Bayesian alternatives. Using the posterior distribution, a decision theoretic approach for Bayesian variable selection is developed, which identifies a subset of covariates that retains nearly the predictive accuracy of the full model. The methodology is applied to actigraphy data to investigate the association between intraday physical activity and responses to a sleep questionnaire. ———————————————————————— Tutti gli interessati sono invitati a partecipare. 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, Pierpaolo De Blasi --- University of Torino & Collegio Carlo Alberto https://sites.google.com/a/carloalberto.org/pdeblasi/ <https://sites.google.com/a/carloalberto.org/pdeblasi/>

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XXIV Brazilian School of Probability/São Paulo School of advanced science
by Francesco Caravenna 13 Dec '19

13 Dec '19

Ricevo e inoltro. > Da: Dirk Erhard <erharddirk(a)gmail.com> > Oggetto: XXIV Brazilian School of Probability/São Paulo School of advanced science > Data: 12 dicembre 2019 20:22:34 CET > > First announcement : > > XXIV Brazilian School of Probability/ São Paulo School of advanced science on singular stochastic partial differential equations and their applications > > It is a pleasure to announce the XXIV Brazilian School of Probability/ São Paulo School of advanced science on singular stochastic partial differential equations and their applications. The São Paulo school is divided into two parts and will happen in the weeks of July 28 to August 8, 2020 at Campinas University. In the first week there will be two introductory mini courses (stochastic calculus and rough paths) that lay the foundations for the courses of the second week. In the latter ones newly developed theories and their latest developments in the field of singular SPDEs and related areas will be taught. The program will be complemented with several plenary talks, invited talks, a poster session and a visit to the LNLS laboratories, where the only particle accelerator of Latin America is located. The school will give full financial support for around 100 students (50 from Brazil and 50 from abroad). More informations under https://www.ime.unicamp.br/spas2020/ <https://www.ime.unicamp.br/spas2020/>. > > The XXIV Brazilian School of Probability will coincide with the second week of the São Paulo School. As in previous years, the XXIV Brazilian School of Probability will consist of two mini courses, plenary talks, contributed talks and poster sessions, all presented in a relaxed atmosphere. This will be our first edition at IMECC-UNICAMP, which is home to one of Brazil's top ranked Mathematics departments. More informations under https://www.ime.unicamp.br/bsp2020/ <https://www.ime.unicamp.br/bsp2020/>. > > > We would be grateful if you could advertise these events among your colleagues. > > On behalf of the organizing committee > > Dirk Erhard > Adriana Neumann > Christian Olivera

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Saint-Flour 2020 - First announcement
by Francesco Caravenna 13 Dec '19

13 Dec '19

Ricevo e inoltro. > Da: Saint-Flour Summer School <stflour(a)math.univ-bpclermont.fr> > Oggetto: Saint-Flour 2020 - First announcement > Data: 12 dicembre 2019 21:08:36 CET > A: saintflour(a)math.univ-bpclermont.fr > Rispondi a: Saint-Flour Summer School <stflour(a)math.univ-bpclermont.fr> > > SAINT-FLOUR 2020 - FIRST ANNOUNCEMENT > > Dear colleagues > > The 50th Saint-Flour Probability Summer School will be held on July 5-17, 2020. > > It is supported by the Université Clermont Auvergne and Centre National de la Recherche Scientifique. > > This year, the three courses will be: > > Ivan Corwin: Integrable probability and Gibbsian line ensembles > Sylvie Méléard: The interplay between scales in mathematical modeling for ecology and evolution > Allan Sly: Random Constraint Satisfaction Problems > Further information can be found on the conference website and YouTube channel: > > http://recherche.math.univ-bpclermont.fr/stflour/stflour-en.php <http://recherche.math.univ-bpclermont.fr/stflour/stflour-en.php> > https://www.youtube.com/channel/UC640PtwmkBnrhCdop2daETw <https://www.youtube.com/channel/UC640PtwmkBnrhCdop2daETw> > > Online registration will open in march. You will receive another announcement at that time. > > Please give the information to anyone else who might be interested. > > Best regards, > > The organizing committee > > Christophe Bahadoran, Hacène Djellout, Arnaud Guillin > > ------------------------------------------------- > > Laboratoire de Mathématiques Blaise Pascal, CNRS UMR 6620 > Université Clermont-Auvergne, Campus des Cézeaux > 3, place Vasarely > TSA 60026 CS 60026 > 63178 Aubière cedex, France > > Tel: +33 (0)4 73 40 70 50 > Fax: +33 (0)4 73 40 54 50 > > mailto:stflour@math.univ-bpclermont.fr <mailto:stflour@math.univ-bpclermont.fr>

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Energy Finance Italia: deadline approaching + YITP grants for young researchers
by Tiziano Vargiolu 12 Dec '19

12 Dec '19

Dear All, we wish to remind that the deadline for paper submissions for the fifth edition of the Energy Finance Italia Workshop - EFI5, which will be held in Rome, University of Roma Tre, next February 10-11, 2020 http://host.uniroma3.it/eventi/efi5/ is rapidly approaching (Sunday, December 15). We also want to advertise that, for the 3rd consecutive year, we are applying for the Young Investigator Training Program of the ACRI (Associazione Casse di Risparmio Italiane). If funded (as in the previous 2 editions), we will grant several 1-month positions to young researchers, coming from outside Italy, to spend in one Italian research institution of the network. In order to be eligible, the young researcher should submit a presentation to the workshop, and choose at least three research institutions to spend their grant at. All those interested in such positions are kindly asked to submit an extended abstract to the workshop (see http://host.uniroma3.it/eventi/efi5/) and to contact me (vargiolu(a)math.unipd.it), in order to have more precise details on the official procedure. Best regards Tiziano -------------------------------------------------------------------------- Tiziano Vargiolu Dipartimento di Matematica Phone: +39 049 8271383 Universita' di Padova Fax: +39 049 8271428 Via Trieste, 63 E-mail: vargiolu(a)math.unipd.it I-35121 Padova (Italy) WWW: http://www.math.unipd.it/~vargiolu --------------------------------------------------------------------------

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Seminari di H.A.Mimun e G. Panizo a Roma, Univ. La Sapienza
by Faggionato, Alessandra 11 Dec '19

11 Dec '19

Buongiorno sotto trovate l'annuncio per due seminari che si terranno al Dipartimento di Matematica dell'Università La Sapienza a Roma la prossima settimana. grazie saluti alessandra ****************************************************************************************** *When*: Monday 16 December, 16:00 *Where*: Room B, Department of Mathematics, Sapienza University, Rome. *Speaker*: H.A. Mimun (Department of Mathematics, Sapienza University, Rome) *Title:* Percolation in the Miller-Abrahams random resistor network *Abstract: *The Miller-Abrahams random resistor network is used to study electron transport in amorphous solids. This resistor network is given by the complete random graph built on a marked homogeneous Poisson point process on R^d and each edge {x,y} is associated to a filament with conductance depending on the temperature, the distance between the points x,y and their associated marks. In this talk we consider the subgraph containing only edges with lower bounded conductances and, using the method of randomized algorithms developed by Duminil-Copin et al. and the renormalization argument proposed by Grimmett and Marstrand, we analyze the connection probabilities and the left-right crossings in appropriate regimes. These percolation properties are key ingredients for understanding the asymptotic behavior at low temperature of the effective conductivity of the Miller-Abrahams random resistor network. Joint work with Alessandra Faggionato (Sapienza University, Rome). ****************************************************************************************** *When*: Tuesday 17 December, 14:00 (sharp!) *Where:* Sala di Consiglio, Department of Mathematics, Sapienza University, Rome. *Speaker: *Gonzalo Panizo Garcia, IMCA, Lima, Perù *Title:* A self-interacting random walk *Abstract:* In 2011, Benjamini, Kozma and Schapira introduced a “balanced excited random walk” in the 4-dimensional lattice. In 2016, a similar model was studied by Peres, Schapira and Sousi in the 3-dimensional lattice. Here we generalize their constructions in the d-dimensional lattice, in the following way: if the walk visits a site for the first time, it makes a simple random walk step in the first d_1 dimensions, whereas if the site has been already visited, it makes a simple random walk step in the last d_2 coordinates. Both BKS and PSS proved transience in the non-overlapping case d=d_1+d_2, with d_1=d_2=4 (BKS) and d_1=1, d_2=3 (PSS). In this talk some result for the overlapping case (d_1+d_2>d) will be presented, in particular for d=4, d_1=2 and d_2=3. (Joint work with D. Camarena and A. Ramirez). -- ************************************************* Prof. Alessandra Faggionato http://www1.mat.uniroma1.it/~faggionato/ Department of Mathematics University "La Sapienza" Piazzale Aldo Moro, 5 00185 - Rome Office 5, Phone (0039) 06 49913252 *************************************************

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Workshop Junior Female Researchers in Probability, 17.-19. June 2020
by Luisa Andreis 11 Dec '19

11 Dec '19

Dear colleagues, we would like to draw your attention to the third conference for "Junior female researchers in probability" in Berlin, 17.-19. June 2020. The aim of this workshop is to promote young female researchers by giving them an opportunity to present their own work, and hear distinguished mathematicians who can inspire them to pursue a fulfilling career in probability. Keynote spekaers: Martina Hofmanova (Bielefeld) Nina Gantert (TU München) Invited speakers: Sigrid Källblad (Stockholm) Annika Lang (Göteborg) Elena Pulvirenti (Bonn) Maite Wilke Berenguer (Bochum) Female participants are invited to submit abstracts for contributed talks, and may apply for financial support. There are special travel grants for female master students interested in gaining some insight into research and get in touch with researchers. Of course participation of men is very welcome, but presentations and financial support are reserved for women. Please pass this information on to interested master students, PhD students and postdocs as well as your colleagues! More details can be found on our website: https://www.wias-berlin.de/workshops/JFRP20/ <https://www.wias-berlin.de/workshops/JFRP20/> Best regards, Luisa Andreis, Peter Bank, Dörte Kreher and Noemi Kurt IRTG 2544 Stochastic Analysis in Interaction, Berlin-Oxford

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4 postdoctoral positions in Mathematics, Computer Science and interactions in Lyon & Saint-Étienne: 2020 campaign Labex Milyon
by Pietro Caputo 11 Dec '19

11 Dec '19

ricevo e inoltro: ---------- Forwarded message --------- From: Christophe SABOT <sabot(a)math.univ-lyon1.fr> Date: Mon, Dec 9, 2019 at 2:33 PM Subject: 4 postdoctoral positions in Mathematics, Computer Science and interactions in Lyon & Saint-Étienne: 2020 campaign Labex Milyon Dear Colleagues, Please forward this message to interested colleagues and potential candidates. Best regards, Christophe Sabot Responsible of the Labex Milyon ----------------------------------------------------------------------------------------------------------------------------- The Excellence Laboratory Milyon <http://milyon.universite-lyon.fr> (Labex Milyon) opens the 2020 campaign of postdoctoral researchers in Lyon--Saint-Etienne in Mathematics, Computer Science and their interactions (including some aspects of theoretical physics). *Milyon offers four postdoctoral positions of two years* with no teaching load for the period 2020–2022. The application is open to all research areas of the labex Milyon (see here <https://milyon.universite-lyon.fr/about-research-126697.kjsp?RH=EN-MILYON-9…> ). More information on the link below: https://milyon.universite-lyon.fr/postdoctoral-positions-2020-2022--130160.… Deadline: January 7th 2020 ------------------------------------------------------------------------------------------------------------------------------

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Winter school in Leeds (13-17 January 2020)
by Tiziano De Angelis 09 Dec '19

09 Dec '19

Dear All, Just a kind reminder that registration for the winter school+workshop at the link below will close on the 15th of December. https://conferences.leeds.ac.uk/osfbp/ Best wishes Tiziano Sent from my iPhone

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Workshop "Graphs and Randomness in Turin"
by Federico Polito 09 Dec '19

09 Dec '19

Apologies for cross-posting. We are pleased to announce the workshop *Graphs and Randomness in Turin* January 20-21, 2020 Department of Mathematics "G. Peano", University of Torino, Italy For more information please see the webpage: https://sites.google.com/view/graphs-and-randomness-in-turin Registration is mandatory but free. To register please email tamas.makai(a)unito.it by January 15. Invited Speakers: - Elisabetta Candellero (Università degli Studi di Roma Tre) - Umberto De Ambroggio (University of Bath) - Nicola Del Giudice (Graz University of Technology) - Thomas M. Michelitsch (Sorbonne Université, CNRS) - Angelica Pachon (University of South Wales) - Guillem Perarnau (Universitat Politècnica de Catalunya) - Matt Roberts (University of Bath) - Tatyana Turova (Lund University) With best regards, The organisers, Tamás Makai Federico Polito -- Federico Polito Department of Mathematics University of Torino Via Carlo Alberto, 10 10123, Torino, Italy Email: federico.polito(a)unito.it Tel: +39 011 6702862

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Re: [Random] Fwd: Post-doc position in Dynamical Systems @ Univ. of Rome Tor Vergata (fwd)
by Michele Gianfelice 09 Dec '19

09 Dec '19

Salve, ricevo e inoltro p.c.. Cordialmente, m.gianfelice > ---------- Forwarded message ---------- > Date: Fri, 6 Dec 2019 17:31:58 +0100 > From: Paolo Giulietti <paologiulietti.math(a)gmail.com> > To: undisclosed-recipients: ; > Subject: Fwd: Post-doc position in Dynamical Systems @ Univ. of Rome Tor > Vergata > > > > ---------- Forwarded message --------- > From: Alfonso Sorrentino <sorrentino(a)mat.uniroma2.it> > Date: Thu, Dec 5, 2019 at 6:08 PM > Subject: Post-doc position in Dynamical Systems @ Univ. of Rome Tor > Vergata > To: > Cc: Carlangelo Liverani <liverani(a)mat.uniroma2.it>, > <butterley(a)mat.uniroma2.it>, Alfonso Sorrentino > <sorrentino(a)mat.uniroma2.it> > > > Dear colleagues, > We would like to bring to your attention the following opening for a > 2-year research fellowship in Dynamical Systems at > University of Rome Tor Vergata. > This position is supported by the national grant MIUR-PRIN 2017 "Regular > and stochastic behaviour in dynamical systems". > > More information in the enclosed documents (both in italian and english) > and on > thewebsite: https://web.uniroma2.it/module/name/Content/newlang/italiano/action/showpag… > tion_id/4992 > > Applications should be received by 30/01/2020. > > We would be very grateful if you could help us bring this advertisement to > the attention of potential candidates. > > Do not hesitate to contact us if you need further information. > > Kind regards, > > Oliver Butterley > Carlangelo Liverani > Alfonso Sorrentino > > > -- > Dipartimento di Matematica > Università degli Studi di Roma "Tor Vergata" > Via della Ricerca Scientifica 1 > 00133 Rome (Italy) > > > > > -- > ------------------------------------------------------------------------- > "NO! Try not. Do, or do not. There is no try." > > "Much to learn, you still have." > > \\Yoda\\

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Tenure track position in stochastic analysis
by Enrico Priola 07 Dec '19

07 Dec '19

====================================== Tenure Track Professorship of Stochastic Analysis (University of Konstanz, Germany) At the Department of Mathematics and Statistics of the University of Konstanz, there is an opening for a Tenure Track Professorship of Stochastic Analysis (Tenure to W3). The successful candidate is expected to have outstanding knowledge of stochastic analysis with connections to partial differential equations and an excellent research record in a current field that complements and strengthens research areas of the department, in particular in stochastics and analysis. The deadline is January 6th, 2020. Further information can be found in German and English at: https://www.uni-konstanz.de/stellenangebote/stellenauswahl.php/stellenauswa… For more informations: Markus Kunze <markus.kunze(a)uni-konstanz.de>

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Seminario Antonio Lerario Roma Tor Vergata
by Anna Vidotto 06 Dec '19

06 Dec '19

I would like to announce the following talk that will be held on Thursday December 12th 2019, at 4:30 PM, in Aula Dal Passo of the Department of Mathematics, University of Rome Tor Vergata. Speaker: Antonio Lerario (SISSA Trieste) Title: Low-degree approximation of real singularities Abstract: In this talk I will discuss some recent results that allow to approximate a real singularity given by polynomial equations of degree $d$ (e.g. the zero set of a polynomial, or the number of its critical points of a given Morse index) with a singularity which is diffeomorphic to the original one, but it is given by polynomials of degree $O(d^{1/2}log d)$. The approximation procedure is constructive (in the sense that one can read the approximating polynomial from a linear projection of the given one) and quantitative (in the sense that the approximating procedure will hold for a subset of the space of polynomials with measure increasing very quickly to full measure as the degree goes to infinity). This is based on a combination of joint works with P. Breiding, D. N. Diatta and H. Keneshlou. — This talk is part of the activity of the MIUR Excellence Department Project CUP E83C18000100006 — —————— Anna Vidotto PostDoc Researcher Dipartimento di Matematica Università degli Studi di Roma Tor Vergata https://sites.google.com/view/annavidotto

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2020 ABS Summer School on Bayesian Causal Inference (Florence, Italy)
by Consonni Guido 05 Dec '19

05 Dec '19

We are glad to announce that the 2020 Applied Bayesian Statistics Summer School (17th edition) will be held in Florence, Italy. BAYESIAN CAUSAL INFERENCE 8-12 June, 2020 Lecturer: Prof. Fan Li, Duke University, Durham, NC, USA Further details are provided below. Guido Consonni and Fabrizio Ruggeri ABS20 Directors Raffaele Argiento and Antonio Pievatolo ABS20 Executive Directors ------------------------------------------------------------------------ ******************************* * ABS20 * ******************************* Applied Bayesian Statistics School BAYESIAN CAUSAL INFERENCE Florence Center for Data Science, University of Florence Florence, Italy 8-12 June, 2020 Lecturer: Prof. Fan Li (Department of Statistical Science, Duke University, Durham, NC, USA) https://stat.duke.edu/people/fan-li The conference webpage is >>> http://www.mi.imati.cnr.it/conferences/abs20/index.html <<< Registration is now open to reserve a place (but payments are possible only from early January). Please note that the conference room allows only for a very limited number of participants. COURSE OUTLINE The aim of this course is to introduce the fundamental concepts and state-of-art methods for causal inference under the potential outcome framework. The lectures will be organized by the treatment assignment mechanisms. Topics will cover randomized experiments, observational studies with ignorable assignment mechanisms, natural experiments, sequential ignorable longitudinal treatments. Recent advances related to machine learning and more complex situations such as spatial-temporal treatments and interference will also be discussed. All methods will be illustrated via real case studies in health studies, economics and biology. Though the causal framework and most of the methods are independent of the inferential paradigm, an emphasis will be put on the Bayesian paradigm for inference. TENTATIVE PROGRAM See the daily program on the website. PRACTICAL INFORMATION The school will replicate the successful format of the previous years, and will feature lectures and practical sessions (run by a junior researcher), as well as participants' talks. It will start on Monday after lunch and end on Friday before lunch; Wednesday afternoon is free. Info on accommodation will appear soon on the website. Florence (Firenze) is easily accessible by train, airplane or car.

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RISKS Special Issue
by Luca di persio 05 Dec '19

05 Dec '19

Dear all, this is to communicate the *call for papers* related to the following RISKS Special Issue: *New Challenges in Mathematical Finance: From S(P)DEs to Machine Learning* more details can be found in the attached flyer. All the 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.hpa8.com <http://www.hpa8.com/>

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Fwd: Open PostDoc position in Augsburg
by Marco Romito 05 Dec '19

05 Dec '19

--------------------------------------------------------------------------------------------------- Assistant position (PostDoc) for 3 years "Wissenschaftliche Mitarbeiterin / Wissenschaftlicher Mitarbeiter (m/w/d)" At the Universität Augsburg, Chair of Nonlinear Analysis, in the area of stochastic partial differential equations, stochastic analysis, stochastic dynamical systems, or related fields. Scheduled to start on April 1, 2020 until March 31, 2023 For the official advertisement (in German only) see: https://www.uni-augsburg.de/de/jobs-und-karriere/stellenangebote/2019/11/25… Please sent your application including a full CV, a short description of your research interests and a list of publications (either in German or English) via e-mail preferably in a single pdf file to: dirk.bloemker(a)math.uni-augsburg.de <mailto:dirk.bloemker@math.uni-augsburg.de> For questions regarding the position or the research group at the Chair of Nonlinear Analysis, please contact directly Prof. Dr. Dirk Blömker (dirk.bloemker(a)math.uni-augsburg.de <mailto:dirk.bloemker@math.uni-augsburg.de>) Deadline: Januar 6, 2020 Requirements: PhD in Mathematics Workload: 100% position salary: E13 TV-L teaching duties: 5 hours per week during term time -- Prof. Dr. Dirk Blömker, Institut für Mathematik, Universität Augsburg, 86135 Augsburg, Germany Telefon: ++49 (0821) 598 - 2156 Telefax: ++49 (0821) 598 - 2200 E-Mail: dirk.bloemker(a)math.uni-augsburg.de Skype: bloemker21

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mini workshop - A LATE MORNING ON INFORMATION GEOMETRY - 6 Dicembre
by Paola Siri 03 Dec '19

03 Dec '19

MINIWORKSHOP Venerdì 6 Dicembre alle ore 11.00 nell’aula BUZANO del Dipartimento di Scienze Matematiche “G.L.Lagrange” (DISMA) - Politecnico di Torino si terrà il miniworkshop A LATE MORNING ON INFORMATION GEOMETRY Per i dettagli si veda la locandina allegata. Tutti gli interessati sono caldamente invitati a partecipare. Cordiali saluti, Paola Siri e Barbara Trivellato

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Fwd: [isspsm] XXXVI International Seminar on Stability Problems for Stochastic Models
by RITA GIULIANO 03 Dec '19

03 Dec '19

Ricevo e inoltro Rita Giuliano -------- Messaggio originale -------- Oggetto: [isspsm] XXXVI International Seminar on Stability Problems for Stochastic Models Data: 03.12.2019 07:47 Mittente: "isspsm2020" <isspsm2020(a)krc.karelia.ru> Destinatario: <isspsm(a)lists.cs.msu.ru> Dear Colleagues, On behalf of the organizing committee we are pleased to invite you to participate in the XXXVI INTERNATIONAL SEMINAR ON STABILITY PROBLEMS FOR STOCHASTIC MODELS HTTP://ISSPSM2020.KRC.KARELIA.RU/ which will be held in PETROZAVODSK, KARELIA, RUSSIA from 22 TO 26 OF JUNE 2020 under the auspices of the Institute of Applied Mathematical Research of the Karelian Research Centre of the Russian Academy of Sciences, Faculty of Computational Mathematics and Cybernetics of the Lomonosov Moscow State University, Institute of Informatics Problems of the Federal Research Scientific Center "Computer Science and Control" of the Russian Academy of Sciences and Moscow Centre of Fundamental and Applied Mathematics. Please, find the first information letter in the ATTACHMENT and feel free to pass this invitation to your colleagues. INTERNATIONAL PROGRAM COMMITTEE Victor Korolev (Moscow, Russia - Chairman) Vladimir Mazalov (Petrozavodsk, Russia - Chairman) Evsey Morozov (Petrozavodsk, Russia - Vice-Chairman) Irina Shevtsova (Moscow, Russia - Vice-Chairman) Andrey Gorshenin (Moscow, Russia - Secretary) Vladimir Chichagov (Perm, Russia) Sándor Baran (DEBRECEN, Hungary) István Fazekas (DEBRECEN, Hungary) Yuri Khokhlov (Moscow, Russia) Lev Klebanov (Prague, Czech Republic) Vassily Kolokoltsov (Warwick, United Kingdom) Edward Omey (Leuven, Belgium) Enzo Orsingher (Rome, Italy) Gyula Pap (DEBRECEN, Hungary) Yuri Pavlov (Petrozavodsk, Russia) Anna Rettieva (Petrozavodsk, Russia) Alexander Rumyantsev (Petrozavodsk, Russia) Georgy Shevlyakov (Saint-Petersburg, Russia) Alexander Zeifman (Vologda, Russia) THE MAIN TOPICS OF THE XXXVI SEMINAR · Limit Theorems and Stability Problems of Probability Theory · Stochastic Processes · Statistics of Time Series and Stochastic Processes · Finance, Insurance, Risk · Spatial Statistics · Applied Statistics and Data Analysis · Stochastic Dynamics · Random Graphs · Queuing Theory and Modeling · Information Systems · Probability Distributions · Discrete Probability Models · Nonparametric Statistics · Statistical Learning · Stochastic Games PUBLICATIONS Abstracts of communications on the XXXVI International Seminar on Stability Problems for Stochastic Models will be published before the Seminar. Selected proceedings of International Seminar on Stability Problems for Stochastic Models will be published in the Journal of Mathematical Sciences [1] (Springer Science+Business Media, ISSN: 1072-3374) and in the journal Informatics and Applications [2] (ISSN: 1992-2264). IMPORTANT DEADLINES · APRIL 1, 2020 - preliminary registration, abstract submission · April 15, 2020 - notification of acceptance · MAY 1, 2020 - early registration fee payment SEMINAR WEBSITE: HTTP://ISSPSM2020.KRC.KARELIA.RU/ For any questions, please, contact isspsm2020(a)krc.karelia.ru On behalf of the International Program Committee, Victor Korolev, Chairman Irina Shevtsova, Vice-Chairman On behalf of the Local Organizing Committee_,_ Vladimir Mazalov, Chairman Evsey Morozov, Vice-Chairman Links: ------ [1] http://www.springer.com/mathematics/journal/10958 [2] http://www.ipiran.ru/journal/issues/ _______________________________________________ isspsm mailing list isspsm(a)lists.cs.msu.ru https://lists.cs.msu.ru/mailman/listinfo/isspsm

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Seminario di Tyler Helmuth (Bristol) a Roma Tre, 12-12-2019
by Alexandre Stauffer 03 Dec '19

03 Dec '19

SEMINARIO Probabilita' Tyler Helmuth (University of Bristol) Titolo: Random spanning forests and hyperbolic symmetry Giovedi' 12 Dicembre 2019 ORE 10:00 Dipartimento di Matematica e Fisica Universita' degli Studi Roma Tre Largo San Leonardo Murialdo,1 - Pal.C - Aula 211 Abstract The arboreal gas is a probability measure that arises from conditioning the random subgraph given by Bernoulli(p) bond percolation to be a spanning forest, i.e., to contain no cycles. This conditioning makes sense on any finite graph G, and specializes to the uniform measure on spanning forests when p = 1/2. One is naturally lead to ask about the percolative properties of the arboreal gas, and this turns out to be a surprisingly rich question. I will discuss some results and conjectures about the arboreal gas, most of which are based on important relations between the arboreal gas and spin systems with hyperbolic symmetry. Based on joint work in progress with Roland Bauerschmidt, Nick Crawford, and Andrew Swan.

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Economists For Future (fwd)
by Tiziano Vargiolu 02 Dec '19

02 Dec '19

Per completezza: c'e' una cosa molto importante che non viene detta sotto, ma nella procedura di firma si', ed e' questa: IMPORTANT: This open letter is open to everyone to sign, not just economists! Cordiali saluti a tutti ---------- Forwarded message ---------- Date: Mon, 02 Dec 2019 13:16:12 +0000 From: Luisa Jentsch <noreply(a)econ4future.org> Reply-To: info(a)econ4future.org To: Tiziano <vargiolu(a)math.unipd.it> Subject: Economists For Future Dear Tiziano, I write to introduce you to Economists for Future?s open letter that is calling on the economics community to raise its game and devise a more impactful contribution to tackling climate change. Economists for Future is an international student-led organisation with the aim to put pressure on the economics community to treat climate change like the emergency it is. While many economists have shown great academic leadership on this issue, the overall contribution from the community has not been commensurate with the magnitude of the problem. The shortage of climate change related articles in top journals is one such demonstration. For example, the most-cited journal in our discipline has never published an article on climate change [https://lists.econ4future.org/links/iJ9AW4JXP/PfQP6QyMO/aMbvBGRdzdg/YJmX2li…]. As the next generation of economists, as young people who will live through the most severe climate effects and as individuals with a deep belief in the power of good economics to make the world a better place, we feel an acute pressure to ?do more? that we are hoping you will share. We think economists have both a responsibility and an enormous opportunity to have an even greater contribution to help tackle this emergency. The open letter (attempts to) make the case for economists seizing this opportunity to provide the intellectual framework that enables a rapid decarbonisation that is coupled with a great leap in human progress. We would like to invite you to support this initiative by signing the letter, which you can do by filling out the form on our website. [https://lists.econ4future.org/links/iJ9AW4JXP/PfQP6QyMO/aMbvBGRdzdg/K8_4G0o…] And, if you agree with it, we would kindly ask you to share your support among your social and academic networks. If you have any questions about our initiative or the letter, we would love to hear from you ? at the end of the day, we are curious students that desire more from the discipline we want to dedicate our lives to. Kind Regards, Luisa Jentsch Economists For Future Website: econ4future.org [econ4future.org] Facebook [https://lists.econ4future.org/links/iJ9AW4JXP/PfQP6QyMO/aMbvBGRdzdg/CY-m9M0…] Instagram [https://lists.econ4future.org/links/iJ9AW4JXP/PfQP6QyMO/aMbvBGRdzdg/qHhHAzS…] Twitter [https://lists.econ4future.org/links/iJ9AW4JXP/PfQP6QyMO/aMbvBGRdzdg/zMI73YS…]

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Presentazione Rapporto IVASS 2019 (fwd)
by Tiziano Vargiolu 02 Dec '19

02 Dec '19

---------- Forwarded message ---------- Date: Mon, 2 Dec 2019 09:28:26 +0100 From: Paolo Foschi <foschip(a)gmail.com> To: Tiziano Vargiolu <vargiolu(a)math.unipd.it> Cc: Paolo Foschi <foschip(a)gmail.com> Subject: Presentazione Rapporto IVASS 2019 Caro Tiziano, la prossima settimana, a Rimini, ospitiamo i tecnici dell?IVASS che presentano il rapporto sullo stato del sistema assicurativo italiano. Potresti far circolare la locandina nella mailing list random? Grazie e saluti, Paolo ?? Giornata IVASS 9 Dicembre 2019 14:00-17:00 "Il Mercato Assicurativo Italiano: Update sul 2019." Aula Magna Campus di Rimini, Universit? di Bologna Via Domenico Angher? 22, Rimini Ore 14.00 Introduzione Chair Paolo Foschi (Univ. di Bologna) Ore 14:15 Il mercato assicurativo itliano: struttura, perfomance e solvibilit?, Leandro D'Aurizio (IVASS) Ore 15:00 Assicurazioni Vita: Ramo I e Ramo III, Riccardo Cesari (IVASS) Ore 15:45 Il mercato delle polizze RC auto: aspetti economici-quantitativi, Marco Cosconati (IVASS) Ore 16.30 Discussione e domande Carlo Mazzaferro (Univ. di Bologna) ORe 17:00 Chisura dei lavori Riccardo Cesari (IVASS) Pre Info: Prof. Paolo Foschi (paolo.foschi2(a)unibo.it) Dip. di Scienze Statistiche, Universit? di Bologna

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Seminario Prof. Claudio Macci
by malongob＠unina.it 30 Nov '19

30 Nov '19

Il Prof. Claudio MACCI dell'Università di Roma Tor Vergata mercoledì 4 dicembre 2019 alle ore 16 nell'Aula E al III livello del Dipartimento di Matematica e Applicazioni dell'Università degli Studi di Napoli Federico II terrà un seminario dal titolo: Large deviations for risk measures in finite mixture models ABSTRACT Due to their heterogeneity, insurance risks can be properly described as a mixture of different fixed models, where the weights assigned to each model may be estimated empirically from a sample of available data. If a risk measure is evaluated on the estimated mixture instead of the (unknown) true one, then it is important to investigate the committed error. In this paper we study the asymptotic behaviour of estimated risk measures, as the data sample size tends to infinity, in the fashion of large deviations. We obtain large deviation results by applying the contraction principle, and the rate functions are given by a suitable variational formula; explicit expressions are available for mixtures of two models. Finally, our results are applied to the most common risk measures, namely the quantiles, the expected shortfall and the shortfall risk measure. Joint work with Valeria Bignozzi and Lea Petrella. La proponente Maria Longobardi

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Avviso seminario_Alessandra Faggionato_Giovedì 5 dicembre_ore 16
by Carlo Orrieri 28 Nov '19

28 Nov '19

Avviso di Seminario, università di Trento Stochastic homogenization in amorphous media and applications to interacting particle systems and random resistor networks Giovedì 5 dicembre 2019 Luogo: Polo Ferrari 1, via Sommarive, 5 - Povo (TN) - Aula A221 Ore: 16:00 Relatore: Alessandra Faggionato (Università La Sapienza, Roma) Abstract: We consider random walks on marked simple point processes with symmetric jump rates and unbounded jump range. Examples are given by simple random walks on Delaunay triangulations or Mott variable range hopping in doped semiconductors. We present homogenization results for the associated Markov generators. As a first application, we obtain the hydrodynamic limit of the exclusion process given by multiple random walks as above, with hard–core interaction. As a second application, we derive a limit theorem for the effective conductivity of some classes of random resistor networks. This result together with a percolation-type analysis allows to derive the low temperature scaling behavior of conductivity in some classes of strongly disordered media.

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premi banditi dalla Società Italiana di Statistica
by Antonio DI CRESCENZO 27 Nov '19

27 Nov '19

Sono disponibili sul sito della SIS bandi e regolamenti per i seguenti premi: – migliori tesi di dottorato di ricerca; – migliore tesi di Laurea Magistrale in Statistica Matematica (in ricordo del Prof. Oliviero Lessi); – Premio SIS 2019-2020 per la Didattica della Statistica. Maggiori informazioni sono accessibili agli indirizzi seguenti: http://www.sis-statistica.it/ita/9933/Premio%20per%20le%20migliori%20tesi%2… http://www.sis-statistica.it/ita/9960/Premio%20per%20la%20migliore%20tesi%2… http://www.sis-statistica.it/ita/9920/Premio%20per%20la%20Didattica%20della…

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Mini corso: ASYMPTOTICS FOR POSTERIOR BAYESIAN INFERENCE
by Matteo Ruggiero 27 Nov '19

27 Nov '19

Cari colleghi, nell’ambito del programma di Visiting Professors per la Laurea Magistrale in Stochastics and Data Science dell’Università di Torino, con piacere annunciamo il seguente mini corso: ---------------------------------------------- Botond SZABO (Leiden University) ASYMPTOTICS FOR POSTERIOR BAYESIAN INFERENCE ---------------------------------------------- Il corso avrà luogo in Corso Unione Sovietica 218/bis, 10134, Torino, secondo il seguente calendario: Dec 10: 14.00-16.00, Room 30 Dec 11: 14.00-16.00, Room 30 Dec 12: 11.15-13-15, Room 11 Dec 12: 14.00-16.00, Room 11 Il corso è rivolto agli studenti del secondo anno della Laurea Magistrale, ma la partecipazione è aperta a tutti gli interessati. Il programma completo di Visiting Professors, consultabile alla pagina https://www.master-sds.unito.it/go/visiting è supportato dalla Fondazione CRT e dalla “de Castro” Statistics Initiative (www.carloalberto.org/stats) del Collegio Carlo Alberto. Cordiali saluti, Matteo Ruggiero --- Matteo Ruggiero University of Torino and Collegio Carlo Alberto www.matteoruggiero.it

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PostDoc position in Graz
by Daniela Bertacchi 26 Nov '19

26 Nov '19

Open Assistant position (PostDoc) for 2 1/2 years Graz University of Technology, Austria Institute of Discrete Mathematics Working Groups Structure Theory and Stochastics & Noncommutative Structures (Wolfgang Woess & Franz Lehner) Scheduled to start on March 1, 2020. Requirements: PhD in Mathematics or Technical Mathematics, awarded before the beginning of the engagement. Desired qualifications: scientific interest in the fields of Stochastic Processes (random walks) and their analytic counterparts, Graph Theory, Geometric Group Theory and Noncommutative Probability, possibly combining those topics. Readiness to collaborate in research projects in these areas. Workload 40 hours/week. Teaching duties of 4 hours per week per semester, in particular for Mathematics in the Engineering sciences, in German (!). For details + how to apply, see https://www.math.tugraz.at/~woess/position Wolfgang Woess Institut fuer Diskrete Mathematik, Technische Universitaet Graz, Steyrergasse 30, A-8010 Graz, Austria email: woess(a)TUGraz.at http://www.math.TUGraz.at/~woess <http://www.math.tugraz.at/~woess>

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concorso RTD-B MAT 06 all'Aquila
by davide gabrielli 25 Nov '19

25 Nov '19

Segnalo il bando di ricercatore a tempo determinato di tipo B nel settore scientifico disciplinare MAT/06 Probabilità e statistica matematica presso il Dipartimento di ingegneria e scienze dell'informazione e matematica dell'Università dell'Aquila. Il bando si trova al seguente link https://www.univaq.it/section.php?id=1532 Scadenza 19-12-2019 Si prega di darne la massima diffusione, cordiali saluti Davide Gabrielli

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Seminar Berthet @Bocconi
by Giacomo Zanella 25 Nov '19

25 Nov '19

We announce the following DEC Statistics seminar: Thursday, November 28 12:30 Meeting room 3-e4-sr03, Bocconi University, Via Roentgen 1, 3rd floor Quentin Berthet (Google Research) Title: Optimal transport methods in statistics and machine learning: theory and applications Abstract: Optimal transport is one of the foundational problems of optimization, and a very important topic in analysis. It asks how one can transport mass with a given measure to have another measure, with minimal global transport cost. The associated Wasserstein distance is a useful statistical tool to compare distributions, taking into account geometric properties of the data. In this presentation, I will talk about two recent projects on this topic. In the first one, we propose a novel approach for unsupervised embedding alignment, and show applications to natural language processing. It is based on a new approach for Wasserstein loss minimization (joint work with E. Grave and A. Joulin). In the second one, we provide new methods and guarantees for estimation of distributions with smooth densities, in the Wasserstein distance. We show that these tools, inspired by techniques in nonparametric statistics, yield information-theoretic optimal results. We also develop ideas to handle our proposed estimators in a computationally efficient manner, and explore some of the associated computational trade-offs (joint work with J. Weed). Kind regards, Giacomo Zanella The DEC statistics seminars schedule is available at http://www.unibocconi.eu/statseminar Please note: if you are a guest and you do not have a Bocconi ID Card to access to the Bocconi Buildings, please communicate your participation by sending an email to elisa.picassi(a)unibocconi.it

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Extended deadline: MAF 2020 - 9th International Conference MATHEMATICAL AND STATISTICAL METHODS FOR ACTUARIAL SCIENCES AND FINANCE
by Marco Corazza 25 Nov '19

25 Nov '19

*CALL FOR CONTRIBUTIONS - EXTENDED DEADLINE* *MAF 2020 - 9th International Conference MATHEMATICAL AND STATISTICAL METHODS FOR ACTUARIAL SCIENCES AND FINANCE*April 15-17, 2020 - Geneve (CH) *https://www.unige.ch/maf2020/ <https://www.unige.ch/maf2020/>* * The Steering Committee is delighted to announce the 9th International Conference *MAF 2020*. * *MAF 2020* promotes interaction between *mathematicians* and *statisticians* in *actuarial sciences* and *finance*. * *MAF 2020* is open to *academicians* and to *professionals*, to encourage cooperation. * *MAF 2020* covers a *wide variety of subjects* in actuarial science and financial fields. * *MAF 2020* will be held at the *Université de Genève*, in *April 15-17*, *2020*. * *We invite submission of original contributions*. * *Important DEADLINE*: - Submission of 1-page abstracts: December 20th, 2019. - Organized session proposals: December 20th, 2019. - Submission of short papers (facultative): December 20th, 2019. - Early bird registration: December 20th, 2019. *The accepted short papers, at least 4 pages and at most 6 pages, will be included in a Springer Volume. * Keynote speakers - *Michael O'Neill*, Centre for Business Analytics, University College Dublin; - *Jaap Spronk*, Erasmus School of Economics (NEH) & Rotterdam School of Management - *Howell Tong*, London School of Economics and Political Science Apologies for cross-posting. The warmest regards, Marco CORAZZA | Ca'Foscari University of Venice (I) [Behalf of the Steering Committee] Manfred GILLI | University of Geneve (CH) Cira PERNA | University of Salerno (I) Claudio PIZZI | Ca'Foscari University of Venice (I) Marilena SIBILLO | University of Salerno (I)

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Seminatio Pierre Patie @ UniTo - 5 Dicembre
by Bruno Toaldo 25 Nov '19

25 Nov '19

********************************************************************* SEMINARI DI PROBABILITÀ E STATISTICA MATEMATICA DIPARTIMENTO DI MATEMATICA "G. PEANO" UNIVERSITÀ DEGLI STUDI DI TORINO ********************************************************************* Giovedì 5 Dicembre 2019 alle ore 14:00 nell'aula Magna del Dipartimento di Matematica "G. Peano" dell'Università degli Studi di Torino, Via Carlo Alberto 10, Il Prof. *Pierre Patie* (Cornell University, Ithaca, NY, USA) terrà un seminario dal titolo *Completely monotone intertwining relations* Abstract: In this talk, we introduce the concept of completely monotone intertwining relations as a strengthening of usual intertwining relations between Markov semi-groups. We proceed by providing some interesting applications of this new idea which includes the characterization of ergodic constants and hypercontractivity estimates for non-self-adjoint semigroups. We illustrate these results by presenting several examples that have emerged from the recent literature: discrete-to-continuous interacting particle models, degenerate hypoelliptic Ornstein-Uhlenbeck processes, and diffusion-to-jump Jacobi processes. This talk is based on a joint a work with L. Miclo (IMT Toulouse). Tutti gli interessati sono invitati a partecipare.

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First Announcement Conference SPDE&A Levico 2020
by Stefano Bonaccorsi 25 Nov '19

25 Nov '19

First Announcement of the Conference on Stochastic Partial Differential Equations & Applications - XI edition We are pleased to inform you that the "Conference on Stochastic Partial Differential Equations & Applications" will be held from June 1st to June 5th, 2020 in Levico Terme (Trento, Italy). This is the XI-th edition of a series of conferences on SPDEs which, during the years, has become one of the most popular occasions for the community to meet and discuss the latest developments. This year we have, for the first time, 4 mini-courses given by (1) Francesco Caravenna (Italy) (2) Martin Hairer (UK) (3) Martina Hofmanova (Germany) (4) Nikolay Tzvetkov (France) All the researchers in the field are invited to participate. We especially invite young researchers (at Ph.D. or Post-doctorate level) to attend the conference and give a short presentation in dedicated sessions we aim to organize. We are trying to secure funds to support their expenses. Any further information can be found in the website of the conference: https://spdelevico2020.wordpress.com/ Best regards, Stefano Bonaccorsi, Sandra Cerrai, Franco Flandoli, Lorenzo Zambotti (organizing committee)

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Seminario RYDER
by Pierpaolo De Blasi 22 Nov '19

22 Nov '19

STATISTICS SEMINARS @ COLLEGIO CARLO ALBERTO Venerdì 29 Novembre 2019, alle ore 12:00, presso il nuovo edificio del Collegio Carlo Alberto, in Piazza Arbarello 8, Torino, si terrà il seguente seminario: ------------------------------------------------ Robin RYDER (Université Paris Dauphine) A BAYESIAN NON-PARAMETRIC METHODOLOGY FOR INFERRING GRAMMAR COMPLEXITY Based on a set of strings from a language, we wish to infer the complexity of the underlying grammar. To this end, we develop a methodology to choose between two classes of formal grammars in the Chomsky hierarchy: simple regular grammars and more complex context-free grammars. To do so, we introduce a probabilistic context-free grammar model in the form of a Hierarchical Dirichlet Process over rules expressed in Greibach Normal Form. In comparison to other representations, this has the advantage of nesting the regular class within the context-free class. We consider model comparison both by exploiting this nesting, and with Bayes’ factors. The model is fit using a Sequential Monte Carlo method, implemented in the Birch probabilistic programming language. We apply this methodology to data collected from primates, for which the complexity of the grammar is a key question. (joint work with L. Murray, J. Rousseau and A. Thin) ------------------------------------------------ Tutti gli interessati sono invitati a partecipare. 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, Pierpaolo De Blasi --- University of Torino & Collegio Carlo Alberto https://sites.google.com/a/carloalberto.org/pdeblasi/ <https://sites.google.com/a/carloalberto.org/pdeblasi/>

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Mini-corsi a Strasburgo per studenti magistrali
by Dario Trevisan 21 Nov '19

21 Nov '19

Salve, segnalo questa iniziativa di mini-corsi di probabilità che si terranno a Strasburgo nella settimana 20-24 Gennaio 2020, http://irma.math.unistra.fr/stochastique/mc2020/ rivolta a studenti delle lauree magistrali francesi (M1) -- principalmente per pubblicizzare il loro M2 -- ma aperta alla presenza di studenti equivalenti italiani (primo anno di magistrale). Mi hanno comunicato che sono ancora a disposizione alcuni fondi per pagare/rimborsare viaggio e alloggio, e di fare pubblicità anche in Italia. Se siete a conoscenza di qualche studente particolarmente capace e interessato, magari che parli un po' di francese, invitatelo pure a mettersi direttamente in contatto con gli organizzatori (N. Juillet, X. Zeng). Saluti, Dario -- Dario Trevisan, Università degli Studi di Pisa, Dipartimento di Matematica, Largo Bruno Pontecorvo 5, 56127 - Pisa (PI) Italy telephone: (+39) 050 2213832 mobile: (+39) 331 2899761 Skype: dario-trevisan e-mail: dario.trevisan AT unipi.it webpage: http://people.dm.unipi.it/trevisan/

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ECSO - CMS 2020 first Call for Papers
by Martina Nardon 20 Nov '19

20 Nov '19

* Apologies for cross-posting First Announcement and Call for Papers Joint EUROPEAN CONFERENCE ON STOCHASTIC OPTIMIZATION and COMPUTATIONAL MANAGEMENT SCIENCE Conference 1-3 July 2020, Venice, Italy We are delighted to invite you to Venice, Italy, 1-3 July 2020, at the Department of Economics, Ca’ Foscari University. ECSO - CMS 2020 is jointly organized by the Department of Economics of Ca’ Foscari University of Venice, the CMS Journal and the EURO Working Group on Stochastic Optimization. ECSO 2020 is the 3rd edition of a stream of conferences organized by the EURO Working Group on Stochastic Optimization (EWGSO). The previous editions were held in Paris (2014) and Rome (2017). The scope of the conference is to bring together researchers and professionals in Stochastic Optimization and its applications in different fields spacing from economics and finance to supply chain, logistics, etc. CMS 2020 is the 17th edition of an annual meeting associated with the journal of Computational Management Science published by Springer. The aim of the conference is to provide a forum for theoreticians and practitioners from academia and industry to exchange knowledge, ideas and results in a broad range of topics relevant to the theory and practice of computational methods in management science. This joint event will provide a forum for fruitful discussions and interactions among researchers and professionals from industry and institutional sectors on decision making under uncertainty in a complex world. The conference will be within the scopes of both CMS and EWGSO and, in particular, it will focus on models, methods and computational tools in stochastic, robust and distributionally robust optimization and on computational aspects of management science with emphasis on risk management, valuation problems, measurement applications. Traditional fields of application, such as finance, energy, water management, logistics, supply chain management, and emerging ones, such as healthcare, climate risk and sustainable development, will be included. Venue: Department of Economics, Ca’ Foscari University of Venice San Giobbe Campus – Cannaregio 873, 30121 Venice, Italy Webpage: www.unive.it/ecsocms2020 IMPORTANT DATES Abstract submission: March 1, 2020 Notification of acceptance: April 1, 2020 Early registration: April 15, 2020 A Best Student Paper Prize of 600 euro will be awarded. Papers should be nominated via e-mail by the students’ supervisors (ecsocms2020(a)unive.it). Deadline for the submissions to the prize is May 15. The program will include a devoted session for presenting the best papers to compete for the prize, such that the jury could make the final choice. The paper does not have to be published. The papers should be principally authored by the student, but co-authors are permitted as long as their contributions are clarified. Only registered participants’ papers will be considered for the prize. Jury for the Student Best Paper Prize: Stein-Erik Fleten (NTNU Norwegian University of Science and Technology), Milos Kopa (Charles University of Prague), Francesca Maggioni (University of Bergamo), Ruediger Schultz (University Duisburg-Essen). INVITED SPEAKERS DARINKA DENTCHEVA, Stevens Institute of Technology (USA) DAVID MORTON, Northwestern University (USA) GAH-YI BAN, London Business School (UK) DANIEL KUHN, École polytechnique fédérale de Lausanne (CH) GIORGIO CONSIGLI, Università di Bergamo (I) Conference Secretariat: ecsocms2020(a)unive.it Conference hashtag: #ecsocms2020 Best Regards, Diana Barro, Stein-Erik Fleten and Martina Nardon Organizing and Program Committee Chairs -------------------------------------- Dr. Martina Nardon Dipartimento di Economia Università Ca' Foscari Venezia San Giobbe - Cannaregio, 873 30121 Venezia, Italy tel. +39 041 234 7413 --------------------------------------

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Fwd: [ST-NET] Edinburgh Lectureship/Readership in Probability and Stochastic Analysis
by Mario Maurelli 19 Nov '19

19 Nov '19

---------- Forwarded message --------- Da: Martin Keller-Ressel <st-net(a)mailbox.tu-dresden.de> Date: lun 21 ott 2019 alle ore 18:46 Subject: [ST-NET] Edinburgh Lectureship/Readership in Probability and Stochastic Analysis To: st-net(a)zib.de <st-net(a)zib.de> Von: Goncalo dos Reis @UoE <g.dosreis(a)ed.ac.uk> --- Dear friends, dear colleagues, Permanent position in Probability and Stochastic Analysis Position: Lectureship (assistant prof)/Readership (associate prof) As part of an ambitious long-term plan for the School of Mathematics, the University of Edinburgh is making a substantial number of new appointments in the Mathematical Sciences, which includes expansion into part of the new £40M Bayes Centre. As part of this development, we are recruiting in Probability and Stochastic Analysis (broadly interpreted) to start on 1st June 2020 or around that date by mutual agreement. We expect candidates to have either an established record of first-class research or to be able to demonstrate excellent research potential. Those pursuing interdisciplinary research with links to other fields, for instance, Computing, Engineering, Finance, Physics, or links to industry are also encouraged to apply. In addition to carrying out high-quality research, the successful candidate will contribute to the teaching of undergraduate courses and the teaching and further development of our successful MSc programmes in Mathematical Finance. Salary Scale: £41,526 - £49,553 per annum. Very strong and experienced applicants may be appointed to a Readership, for which the salary is £52,559 - £59,135. Applications close at 5pm (UK time) on 29 November 2019 Interviews will take place in Edinburgh during the week 13-17 January 2020 Informal enquiries may be made to Professor Iain Gordon (Head of School) email hosmaths(a)ed.ac.uk. further details: https://www.vacancies.ed.ac.uk/pls/corehrrecruit/erq_jobspec_version_4.jobs… with kind regards to all Goncalo dos Reis _______________________________________________ St-net mailing list St-net(a)zib.de https://listserv.zib.de/mailman/listinfo/st-net --------------------------------------------------------------------------- Dies ist das ST-NET, der (moderierte) Mail-Verteiler der DMV-Fachgruppe Stochastik e.V. Weitere Informationen finden Sie auf unserer Homepage: http://www.fg-stochastik.de This is ST-NET, the (moderated) mailing list of the DMV-Fachgruppe Stochastik e.V. For further information, please refer to our homepage: http://www.fg-stochastik.de Please note the guidelines for posting at http://www.fg-stochastik.de/beitraege-verschicken.html ---------------------------------------------------------------------------

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Fwd: Probability postdoc @ McGill
by Faggionato, Alessandra 19 Nov '19

19 Nov '19

---------- Messaggio inoltrato ---------- Da: *Louigi Addario-Berry* <louigi(a)gmail.com> Data: sabato 16 novembre 2019 Oggetto: Probability postdoc @ McGill A: "Linan Chen, Prof." <linan.chen(a)mcgill.ca>, Jessica Lin < jessica.lin(a)mcgill.ca>, Elliot Paquette <elliot.paquette(a)gmail.com> Dear colleague, We are advertising a 3-year postdoc in probability at McGill; details appear below. We would be grateful if you could pass along this ad to anyone who may be interested. The application deadline is December 10. Thanks very much, Louigi, Linan, Jessica and Elliot. -- To apply: https://www.mathjobs.org/jobs/jobs/15010 The Department of Mathematics and Statistics at McGill University is advertising a three-year postdoctoral fellowship in probability theory and related fields. The postdoctoral fellow will include a teaching obligation of two courses per year. Candidates must have a doctoral degree in mathematics or a related discipline at the date of appointment, and must have demonstrated the capacity for independent research of excellent quality. The probability group includes four faculty members from the McGill Department of Mathematics and Statistics (Louigi Addario-Berry, Linan Chen, Jessica Lin and Elliot Paquette), as well as several faculty members from other McGill departments and other Montreal universities. The fellowship will include a generous salary, and additional funding will be available to the postdoc for research-related travel. Moreover, postdoctoral fellows, depending on their residency status, may pay a reduced tax rate (via the Québec program "Tax Exemption for Foreign Postdoctoral Trainees"). McGill University is committed to equity and diversity. We welcome and encourage applications from women, Indigenous persons, people with disabilities, members of racialized communities, LGBTQIA+ individuals, and other groups which are currently underrepresented within the mathematical community. Candidates are welcome to signal any leave that affected productivity, or any other circumstances that may have had an effect on their career path. This information will be considered to ensure the equitable assessment of the candidate’s record. McGill seeks to ensure the equitable treatment and full inclusion of people with disabilities by striving for the implementation of universal design principles transversally, across all facets of the University community, and through accommodation policies and procedures. Individuals who anticipate needing accommodations for any part of the application process may contact, in confidence, accessibilityrequest.hr(a)mcgill.ca, or phone at 514-398-2477. Applications should be submitted via MathJobs.org and should include 3 references. All qualified applicants are encouraged to apply; however, in accordance with Canadian immigration requirements, Canadians and permanent residents will be given priority. To ensure full consideration applications must be received by December 10, 2019. -- Information about work permits, healthcare and benefits, parental leave, and other employment-related questions can be found at the following links. https://www.mcgill.ca/gps/postdocs https://www.mcgill.ca/gps/postdocs/international/workpermit https://www.mcgill.ca/gps/postdocs/fellows/healthcare https://www.mcgill.ca/gps/students/graduate-policies- and-regulations/parental-leave -- ************************************************* Prof. Alessandra Faggionato http://www1.mat.uniroma1.it/~faggionato/ Department of Mathematics University "La Sapienza" Piazzale Aldo Moro, 5 00185 - Rome Office 5, Phone (0039) 06 49913252 *************************************************

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Seminar Wadsworth @Bocconi
by Giacomo Zanella 18 Nov '19

18 Nov '19

We announce the following DEC Statistics seminar: Thursday, November 21 12:30 Meeting room 3-e4-sr03, Bocconi University, Via Roentgen 1, 3rd floor Jenny Wadsworth (Lancaster University) Title: Towards higher-dimensional spatial and spatio-temporal extremes Abstract: The past decade has seen a huge effort in modelling the extremes of spatial processes. Significant challenges include the development of models with an appropriate asymptotic justification for the tail; ensuring model assumptions are compatible with the data; and the fitting of these models to (at least reasonably) high-dimensional datasets. I will review basic ideas of modelling spatial extremes, and introduce a more scalable approach via conditioning on a single site being extreme, which can also be applied in the space-time context. Furthermore, the sometimes-undesirable nature of conditioning on an extreme event at a particular location can be circumvented by an importance sampling algorithm to change the conditioning event. As we move towards being able to model extremes at more locations, we must also learn to deal with the complex structures of larger datasets, such as spatial nonstationarity in the extremal dependence. Some approaches to simplify these structures via deformations tailored to extremal dependence will also be discussed. Kind regards, Giacomo Zanella The DEC statistics seminars schedule is available at http://www.unibocconi.eu/statseminar Please note: if you are a guest and you do not have a Bocconi ID Card to access to the Bocconi Buildings, please communicate your participation by sending an email to elisa.picassi(a)unibocconi.it

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Seminar: okada@DISMEQ Department of Statistics and Quantitative Methods, University of Milano-Bicocca
by Fulvia Pennoni 18 Nov '19

18 Nov '19

----------------------------------------------------------------------------------- ** 21/11/2019 h.11.00 /Building U7 4th floor - Seminar Room 4026/ Department of Statistics and Quantitative-Methods, Via Bicocca degli Arcimboldi, 8 - 20126 Milano ----------------------------------------------------------------------------- MULTIDIMENSIONAL SCALING OF ASYMMETRIC RELATIONSHIPS Akinori Okada Professor Emeritus of the Rikkyo University, Tokyo okada(a)rikkyo.ac.jp Torgerson (1952) introduces his multidimensional scaling as the first practical method of representing proximity (similarity, dissimilarity) relationships among objects in a multidimensional space or a configuration. The method is called metric, which means that the observed proximities are assumed to be interval or ratio scaled values. Shepard (1962a, b) and Kruskal (1964a, b) introduced methods which are called nonmetric multidimensional scaling. Nonmetric multidimensional scaling assumes that the observed proximities are ordinal scaled values. This mean that only the information which of two proximities is larger (or smaller) than the other is utilized in the analysis. The nonmetric multidimensional scaling of Kruskal (1964a, b) has been used most frequently in practical applications of multidimensional scaling, and several multidimensional scaling methods based on the similar idea of Kruskal (1964a, b) have been introduced. The multidimensional scaling developed so far assumes that the proximity is symmetric. Several researchers focused their attention on the asymmetry in various sorts of proximity; similarity/dissimilarity judgment, same/different judgment, reaction time, social and psychological distance, and so on. It is meaningful to develop asymmetric multidimensional scaling which can represent asymmetric proximity relationships among objects in a configuration. Various kinds of procedures to analyze an asymmetric proximity matrix were invented. We concentrate on the multidimensional scaling which is based on the distance among points, each representing an object, in a multidimensional space (distance model). The asymmetric multidimensional scaling by Okada and Imaizumi (1987) represents asymmetric proximity relationships among objects by the interpoint distance in a multidimensional configuration. The distance between two points is symmetric. It is difficult to represent asymmetric relationships simply by the interpoint distance, because the distance itself is symmetric. The model of Okada and Imaizumi (1987), which is called Distance-radius model, represents an object by a point and a circle [two-dimensional model] (sphere [three-dimensional] or hypersphere [larger than three-dimensional]) centered at the point in a multidimensional space. Several models were derived from the model. Multidimensional scaling mentioned above, regardless of metric or nonmetric and of being able to represent asymmetry or not, analyzes one proximity matrix (object x object) or one-mode two-way proximities (Carroll and Arabie, 1980). To analyze a set of proximity matrices each comes from a source (object x object x source) or two-mode three-way proximities, INDSCAL was developed by Carroll and Chang (1970). INDSCAL can represent relationships among objects and how each source (individual) has different relationships among objects each other. While INDSCAL can represents differences among sources, it cannot represent the asymmetry in relationships among objects of each source. The model of Okada and Imaizumi (1997) is an extension of the Distance-radius model which can analyze a set of asymmetric proximity matrices or two-mode three-way asymmetric proximities. The asymmetric multidimensional scaling of Okada and Imaizumi (1997) can represents asymmetric relationships among objects, and how each source has different symmetric and asymmetric relationships among objects each other as well. Several models, which are less restricted or more restricted, have been derived from Okada and Imaizumi (1997). To analyze one-mode two-way asymmetric proximities, there is another asymmetric multidimensional scaling by Okada (2011) and Okada and Tsurumi (2012) which is based on the singular value decomposition. The asymmetric multidimensional scaling has been utilized to analyze mainly the data from marketing research or brand switching. Several models and procedures have been derived by extending the model of Okada (2011) which can, for example, evaluate newly introduced brands, diagnose brands, tell how to increase the dominance of a brand in the brand switching... Another sort of procedure to analyze one-mode two-way asymmetric proximities is asymmetric cluster analysis, which can represent asymmetric proximity relationships among objects by forming clusters (Okada & Iwamoto, 1966; Okada & Yokoyama, 2015). It is important and meaningful to develop not only multidimensional scaling but also cluster analysis as well so that we can use two different kinds of methods to analyze the same proximity data (Arabie & Hubert, 1994). There are quite a few number of applications of asymmetric multidimensional scaling and cluster analysis. While these applications are not mentioned here because of the space limitation, some of them will be mentioned in the talk. The present abstract deals only with researches of the author and his colleagues. Bove and Okada (2018) gives a review which covers a wide range of asymmetric multidimensional scaling and asymmetric cluster analysis in detail. Some books mention the analysis of asymmetric relationships. Borg and Groenen (2005) has a chapter of asymmetric multidimensional scaling. Coxon and Coxon (2001) refers to asymmetric multidimensional scaling. **/References/// Arabie, P. & Hubert, L. (1994). Cluster analysis in marketing research. In Bagozzi, R. F. (Ed.), A/dvanced methods marketing research/. pp. 160-199. Cambridge, MA: Blackwell. Bove, G., & Okada, A. (2018). Methods for the analysis of asymmetric pairwise relationships. Advances in Data Analysis and Classification, *12*, 5-31. Borg, I., & Groenen, P.J.F. (2005). /Modern multidimensional scaling: Theory and applications/(2nd ed.). New York: Springer. Carroll, J. D., & Arabie, P. (1980). Multidimensional Scaling. In M. R. Rosenzweig & L. W. Porter (Eds.), /Annual Review of Psychology/, *31*, 607-649. Carroll, J. D. & Chang, J. J. (1970). Analysis of individual differences individual differences in multidimensional scaling via an /N/-way generalization of “Eckart-Young” decomposition. /Psychometrika/, /35/, 283-319. Coxon, T.F., & Coxon, M.A.A. (2001). /Multidimensional scaling/ (2nd ed.). Boca Raton, FLChapman&Hall/CRC. Kruskal, J. B. (1964a). Nonmetric multidimensional scaling by optimizing goodness of fit to a nonmetric hypothesis. /Psychometrika/, /29/, 1-27. Kruskal, J. B. (1964b). Nonmetric multidimensional scaling: A numerical method. /Psychometrika/, *29,* 115-129. Okada, A. (2011). Analyzing social affinity for foreigners by spectral decomposition: Asymmetric multidimensional scaling of EASS 2008 Data [Supekutoru bunkai niyoru gaikokujin ni taisuru shinkinkan no bunseki: EASS 2008 no deta wo mochiita hitaishou tajigenshakudokoueihou no ouyou]. In JGSS Research Center, (Ed.), /JGSS Research Series/, /11/. (pp. 119-128). Osaka: Osaka University of Commerce. Okada, A., & Imaizumi, T. (1987). Nonmetric multidimensional scaling of asymmetric proximities. /Behaviormetrika, /*21*/,/ 81-96. Okada, A., & Imaizumi, T. (1997). Asymmetric multidimensional scaling of two-mode three-way proximities. /Journal of Classification/,*14, *195-224. Okada, A., & Iwamoto, T. (1996). University enrollment flow among the Japanese prefectures: A comparison before and after the Joint First Stage Achievement Test by asymmetric cluster analysis. /Behaviormetrika/, *23*, 169-185. Okada, A., & Tsurumi, H. (2012). Asymmetric multidimensional scaling of brand switching among margarine brands./Behaviormetrika/, *39*, 111-126. Okada, A., & Yokoyama, S. (2015). Asymmetric CLUster analysis based on SKEW-Symmetry: ACLUSKEW. In I. Morlini, M. Tommaso, & M. Vichi, (Eds.), /Advance in statistical models for data analysis/.//191-199. Heidelberg, Germany: Springer-Verlag. Shepard, R. N. (1963a). The analysis of proximities: Multidimensional scaling with unknown distance function. I. /Psychometrika/, *27*, 125-140. Shepard, R. N. (1963b). The analysis of proximities: Multidimensional scaling with unknown distance function. II. /Psychometrika/, *27,* 219-246. Torgerson, W. T. (1952). Multidimensional scaling: I. Theory and method. /Psychometrika/, *17*, 401-419. ** /For more info:/***//**/fulvia.pennoni@unimib.it <mailto:fulvia.pennoni@unimib.it>/* -- Fulvia Pennoni Ph.D. Department of Statistics and Quantitative Methods University of Milano-Bicocca https://sites.google.com/view/fulviapennoni

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