- Random - Mailing list — Dipartimento di Matematica, UniPI

Annuncio di seminario
by Piccioni, Mauro 24 Nov '16

24 Nov '16

*Dipartimento di Matematica, Sapienza Università di Roma * *Martedì 29 novembre* * Ore 14:00, Aula di Consiglio* * Seminario di Probabilità e Statistica Matematica* *Pietro Caputo, Dipartimento di Matematica, Università di Roma Tre* *Titolo: Random walk on sparse random directed graphs* *Abstract: **A random walk on a finite graph exhibits cutoff if its distance from stationarity remains close to the initial value for a certain number of iterations and then abruptly drops to near zero on a much shorter time scale. Originally discovered in the context of card shuffling by Aldous and Diaconis in 1986, this remarkable phenomenon is now rigorously established for many reversible chains. Here we consider the non-reversible case of random walks on sparse random directed graphs, for which even the stationary distribution is far from being understood. We establish the cutoff phenomenon, determine its time window and prove that the cutoff profile approaches a universal gaussian shape. Moreover, we determine an explicit recursive equation characterizing the stationary distribution. This talk is based on joint work with Charles Bordenave and Justin Salez.* *Tutti gli interessati sono invitati a partecipare.* *Per qualsiasi richiesta di informazione scrivere a piccioni(a)mat.uniroma1.it*

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Posto da associato per esterni bandito dall'Università di Udine (fwd)
by Tiziano Vargiolu 23 Nov '16

23 Nov '16

---------- Forwarded message ---------- Date: Wed, 23 Nov 2016 15:26:15 +0100 From: Marcellino Gaudenzi <gaudenzi2(a)gmail.com> To: Tiziano Vargiolu <vargiolu(a)math.unipd.it> Subject: Posto da associato per esterni bandito dall'Universit? di Udine Caro Tiziano, ti chiedo gentilmente di rendere noto che l'Universit? di Udine ha bandito un posto da professore associato per il settore SECS-S/06 riservato a candidati esterni all'Universit? di Udine (possono partecipare solo candidati che nel corso del triennio precedente la scadenza del bando non hanno prestato servizio, n? hanno ottenuto assegni di ricerca dell'Universit? di Udine). Allego il link al bando http://web.uniud.it/ateneo/normativa/albo_ufficiale/758%20-%202016/file Grazie, cari saluti Marcellino Gaudenzi

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Seminario di Tiziano De Angelis presso la Luiss, Mercoledi' 23 Novembre ore 18 e 10
by Fausto Gozzi 23 Nov '16

23 Nov '16

Luiss, Roma, Dipartimento di Economia e Finanza Viale Romania 32, Roma Mercoledi' 23 Novembre ore 18.10 aula 106 b Seminario di Tiziano De Angelis (University of Leeds) TITLE: The dividend problem with a finite horizon ABSTRACT: We characterize the value function of the optimal dividend problem with a finite time horizon as the unique classical solution of a suitable Hamilton-Jacobi-Bellman equation. The optimal dividend strategy is realized by a Skorokhod reflection of the fund's value at a time-dependent optimal boundary. Our results are obtained by establishing for the first time a new connection between singular control problems with an absorbing boundary and optimal stopping problems on a diffusion reflected at an elastic boundary. Link al paper <http://arxiv.org/abs/1609.01655>http://arxiv.org/abs/1609.01655 Tutti gli interessati sono invitati a partecipare. Per qualsiasi richiesta di informazione scrivere a faustogozziluiss(a)gmail.com Fausto Gozzi Fausto Gozzi Dipartimento di Economia e Finanza LUISS - Guido Carli Viale Romania, 32 00197 Roma Italy tel 06.85225723 (office) FAX 06.86506513 e-mail: fgozzi(a)luiss.it webpage: http://docenti.luiss.it/gozzi/ old addresses: Fausto Gozzi Dipartimento di Matematica per le Decisioni Economiche Finanziarie e Assicurative Facolta' di Economia Universita' di Roma La Sapienza via del Castro Laurenziano 9 00161 Roma Italy tel 06/49766275 (office) FAX 06/49766765 and also Fausto Gozzi Dipartimento di Matematica Universita' di Pisa via Filippo Buonarroti n. 2 56127 Pisa Italy tel 050/2213270 FAX 050/2213224 e-mail: GOZZI(a)DM.UNIPI.IT

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Deadlines Reminder -- First Italian Meeting on Probability and Mathematical Stastistics
by Federico Polito 22 Nov '16

22 Nov '16

Dear Colleagues, This is a reminder of the upcoming deadlines of the "First Italian Meeting on Probability and Mathematical Stastistics" which will be held in Torino from June 19-th to 22-nd, 2017: - Deadline for submission of Contributed Sessions: *December 15, 2016* - Deadline for request of financial support: *December 15, 2016* - Deadline for abstract submission (contributed talks/posters/contributed sessions talks): January 31, 2017 - Deadline for registration: March 31, 2017 More information on the Meeting's website at http://calvino.polito.it/~probstat/torino2017 On behalf of the organizing Committee, 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 6702937 Web: www.federicopolito.it

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EFI2, December 5-6, Padova, Italy: deadline approaching for registration
by Tiziano Vargiolu 22 Nov '16

22 Nov '16

(sorry for cross-postings) Dear all, we wish to remind you that the deadline for the registration as attendee to the workshop Energy Finance Italia (Padova, Italy, December 5-6, 2016) is approaching (November, 25). You can find more details on the workshop's website: http://events.math.unipd.it/efi2/ See you in Padova! 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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PhD opportunities in Warwick (in Statistics, Probability, Mathematical Finance)
by Elisabetta Candellero 21 Nov '16

21 Nov '16

Dear all, The University of Warwick is advertising several new PhD opportunities in the fields of *Statistics*, *Probability* and *Mathematical Finance*, with funding available *especially* for UK and EU students. PhD applications are considered on a rolling basis, but the deadline to apply for *funding* is early 2017 (see http://www2.warwick.ac.uk/fac/sci/statistics/postgrad/research/fees-funding/ for details). More precise information can be found at: http://www2.warwick.ac.uk/fac/sci/statistics/postgrad/research. Please forward this message to all potentially interested students. Thank you very much. Elisabetta Candellero

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Workshop on Quantitative Finance 2017 - deadline approaching (fwd)
by Tiziano Vargiolu 19 Nov '16

19 Nov '16

---------- Forwarded message ---------- Date: Sat, 19 Nov 2016 13:48:56 +0100 From: Fabio Bellini <fabio.bellini(a)unimib.it> To: fabio.bellini(a)unimib.it Subject: Workshop on Quantitative Finance 2017 - deadline approaching Dear colleagues, as you know the traditional end-of-January Workshop on Quantitative Finance will be held this year at the University of Milano-Bicocca. All the information is available on the official website https://sites.google.com/site/qfw2017/ We have funding for accommodation of foreign PhD students, please send your application with a full CV to qfw2017(a)unimib.it. We also strongly encourage participation from the financial industry; the Workshop will be closed by a round table on Blockchain Finance. Participation to the conference and to the round table is free, but registration on the official website is mandatory. The deadline for submitting the full paper or an extended abstract is 1/12/2016. Notification of acceptance will be given by 23/12/2016. The full paper for the discussant will have to be provided in any case by 8/1/2017. Looking forward to seeing you in Milan! Prof. Fabio Bellini Department of Statistics and Quantitative Methods University of Milano-Bicocca Via Bicocca degli Arcimboldi 8, 20126 Milano 0039-2-64483119 http://www.economia.unimib.it/bellini http://scholar.google.it/citations?user=P61L8P4AAAAJ&hl=it

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postdoc position available on probabilistic approaches in non-equilibrium statistical mechanics
by Francesco Caravenna 18 Nov '16

18 Nov '16

Ricevo e inoltro. > Da: Fabio Toninelli <toninelli(a)math.univ-lyon1.fr> > Oggetto: postdoc position available on probabilistic approaches in non-equilibrium statistical mechanics > Data: 18 novembre 2016 08:53:17 GMT+01:00 > > Dear Colleague, > > A post-doctoral position is available from April 2017 or later within our research group on probabilistic approaches in non-equilibrium statistical mechanics: > > http://math.univ-lyon1.fr/homes-www/toninelli/LSD.html > > The duration is one year, with possible extension for another year. The post-doctoral fellow will be working on one of the following topics: > > - Macroscopic transport phenomena > - Slow and disordered dynamics > - Interface dynamics and KPZ equation > > Depending on the topic, the research will be conducted in one of the institutes associated to our research group (see the web page). > The post-doctoral fellow will receive a net salary of 2400 euros per month and benefit from health insurance. > > Applications with a curriculum vitae and a brief research statement should be sent by the candidate before January 15, 2017 to Stefano Olla (olla(a)ceremade.dauphine.fr). > The candidate will require at least one recommendation letter to be sent directly to Stefano Olla. > > We would be grateful if you could publicize this offer among the PhD graduates of your department. > > Yours sincerely > > S. Olla, T. Bodineau, F. Toninelli. > —————————————————- > > -- > Fabio Toninelli > Institut Camille Jordan, Universite' Lyon 1 > 43 bd du 11 novembre 1918 > 69622 Villeurbanne Cedex, France > > Office 105, tel: +33 (0) 4 26 23 44 41

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Seminario SCARPA
by Matteo Ruggiero 18 Nov '16

18 Nov '16

******************************************************************* STATISTICS SEMINARS @ COLLEGIO CARLO ALBERTO ******************************************************************* Venerdi 25 Novembre 2016 alle ore 12:00, presso l’Aula Rossa del Collegio Carlo Alberto, Moncalieri (TO), si terra' il seguente seminario: Bruno SCARPA (Università di Padova) BAYESIAN MODELLING OF NETWORKS IN BUSINESS INTELLIGENCE PROBLEMS Complex network data problems are increasingly common in many fields of application. Our motivation is drawn from strategic marketing studies monitoring customer choices of specific products, along with co-subscription networks encoding multiple purchasing behavior. Data are available for several agencies within the same insurance company, and our goal is to efficently exploit co-subscription networks to inform targeted advertising of cross-sell strategies to currently mono-product customers. We address this goal by developing a Bayesian hierarchical model, which clusters agencies according to common mono-product customer choices and co-subscription networks. Within each cluster, we efficiently model customer behavior via a cluster-dependent mixture of latent eigenmodels. This formulation provides key information on mono-product customer choices and multiple purchasing behavior within each cluster, informing targeted cross-sell strategies. We develop simple algorithms for tractable inference, and assess performance in simulations and an application to business intelligence. Tutti gli interessati sono invitati a partecipare. Il seminario e' organizzato dalla "de Castro" Statistics Initiative (http://www.carloalberto.org/stats <http://www.carloalberto.org/stats>) in collaborazione con il Collegio Carlo Alberto. Cordiali saluti, Matteo Ruggiero --- Matteo Ruggiero University of Torino and Collegio Carlo Alberto www.matteoruggiero.it

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[Am-l] 5th Heidelberg Laureate Forum, September 24 - 29, 2017 // Call for Applications (fwd)
by Tiziano Vargiolu 17 Nov '16

17 Nov '16

===================================================================================================================================================================00 Calling Outstanding Young Researchers ? Application Tool Open! The application process for the 5th Heidelberg Laureate Forum has started. Young researchers in computer science and mathematics from all over the world can apply for one of the 200 coveted spots to participate in the Heidelberg Laureate Forum (HLF), an annual networking event. The HLF offers all accepted young researchers the great opportunity to personally interact with the laureates of the most prestigious prizes in the fields of mathematics and computer science. For one week, the recipients of the Abel Prize, the ACM A.M. Turing Award, the ACM Prize in Computing, the Fields Medal, and the Nevanlinna Prize engage in a cross-generational scientific dialogue with young researchers in Heidelberg, Germany. The application period for the 5th HLF runs from November 14, 2016 until February 14, 2017. Young researchers at all phases of their careers (undergrad, PhD or postdoc) are encouraged to complete and submit their applications by February 14 (midnight at the dateline) via the following link: http://application.heidelberg-laureate-forum.org The 5th HLF will take place from September 24 to 29, 2017 (with young researcher registration on September 23). This prominent, versatile event combines scientific, social and outreach activities in an informal atmosphere, fueled by comprehensive exchange and scientific inspiration. Laureate lectures, young researcher workshops and a structure welcoming unfettered discussions are the elements that compose the Forum?s platform. Over the course of the week-long HLF, young researchers will be given the exclusive possibility to profoundly connect with their scientific role models and find out how the laureates made it to the top of their fields. As described by a young researcher at the 4th HLF, ?The best professional experience of my life. I thought that receiving my PhD was the most ultimate event and highlight, but the HLF tops even that.? All applications that are completed and submitted by the deadline are meticulously reviewed by an international committee of experts to ensure that only the most qualified candidates are invited. There are 100 spaces available for each discipline of mathematics and computer science. All applicants will be notified by the end of April 2017 whether or not they will be invited. For questions regarding requirements and the application process, please contact Young Researchers Relations at: yr(a)heidelberg-laureate-forum.org<mailto:yr@heidelberg-laureate-forum.org> For more information, please visit: www.heidelberg-laureate-forum.org<http://www.heidelberg-laureate-forum.org> Background The Heidelberg Laureate Forum Foundation (HLFF) annually organizes the Heidelberg Laureate Forum (HLF), which is a networking event for mathematicians and computer scientists from all over the world. The 5th Heidelberg Laureate Forum will take place from September 24 to 29, 2017. The HLFF was established and is funded by the German foundation the Klaus Tschira Stiftung (KTS), which promotes natural sciences, mathematics and computer science. The Scientific Partners of the HLFF are the Heidelberg Institute for Theoretical Studies (HITS) and Heidelberg University. The HLF is strongly supported by the award-granting institutions, the Association for Computing Machinery (ACM), the International Mathematical Union (IMU), and the Norwegian Academy of Science and Letters (DNVA). HLF Images https://www.flickr.com/photos/hlforum/sets/72157672915109901 Press Inquiries/Contact for Journalists Wylder Green Christiane Schirok Communications Heidelberg Laureate Forum Foundation Schloss-Wolfsbrunnenweg 33, 69118 Heidelberg, Germany media[at]heidelberg-laureate-forum.org Telephone: +49-6221-533-384 Applicant Inquiries Julia Eberhardt Young Researcher and International Academic Relations Heidelberg Laureate Forum Foundation Schloss-Wolfsbrunnenweg 33, 69118 Heidelberg, Germany yr[at]heidelberg-laureate-forum.org Telephone: +49-6221-533-387 I _______________________________________________ Am-l mailing list Am-l(a)science.uu.nl http://mailman.science.uu.nl/mailman/listinfo/am-l

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Seminario ISAAC MEILIJSON @ UniTo
by Federico Polito 16 Nov '16

16 Nov '16

********************************************************************* SEMINARI DI PROBABILITA' E STATISTICA MATEMATICA DIPARTIMENTO DI MATEMATICA "G. PEANO" UNIVERSITA' DEGLI STUDI DI TORINO ********************************************************************* Martedi 22 novembre alle ore 14:30 in aula C presso il Dipartimento di Matematica "G. Peano" dell'Università degli Studi di Torino, Via Carlo Alberto 10, Il Prof. ISAAC MEILIJSON (Tel Aviv University) terrà un seminario dal titolo PLACING A BET ON MORE THAN ONE HOLE AT THE ROULETTE TABLE Abstract: In Dynamic Programming, mixed strategies consist of randomizing the choice of actions. In some problems, such as portfolio management, it makes sense to diversify actions rather than choosing among them purely or randomly. Optimal betting in casinos and roulette by a gambler with fixed goal was studied by Dubins and Savage 1965 and their school without the element of diversification (betting simultaneously on different holes of the roulette), once it was proved (Smith's theorem - Smith 1967, Dubins 1972 and Gilat and Weiss 1976) that diversification doesn't increase the probability of reaching the goal. We question the scope of this finding, that was based on the assumption that the holes on which gamblers can bet are disjoint, such as 1 and BLACK in regular roulette. A counterexample is provided in which holes are nested, such as 1 and RED. Thus, it may be rational for gamblers with fixed goal to place chips on more than one hole at the table. Tutti gli interessati sono invitati a partecipare. -- Federico Polito Department of Mathematics University of Torino Via Carlo Alberto, 10 10123, Torino, Italy Email: federico.polito(a)unito.it Tel: +39 011 6702937 Web: www.federicopolito.it

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Seminario di Probabilità - Padova
by alessandra bianchi 16 Nov '16

16 Nov '16

Ho il piacere di invitarvi al seguente seminario, che si terrà Giovedì 24 novembre, alle 14:30, in aula 2BC30 della Torre Archimede presso il Dipartimento di Matematica dell'Università degli Studi di Padova. SPEAKER: Sander Dommers AFFILIATION: University of Bochum TITLE: Metastability in the reversible inclusion process ABSTRACT: In the reversible inclusion process with N particles on a finite graph each particle at a site x jumps to site y at rate (d+\eta_y) r(x,y), where d is a diffusion parameter, \eta_y is the number of particles on site y and r(x,y) is the jump rate from x to y of an underlying reversible random walk. When the diffusion d goeas to 0 as N goeas to infinity, the particles cluster together to form a condensate. It turns out that these condensates only form on the sites where the underlying random walk spends the most time. Once such a condensate is formed the particles stick together and the condensate performs a random walk itself on much longer timescales, which can be seen as metastable behavior. We study the rates at which the condensate jumps and show that in the reversible case there are three time scales on which these jumps occur depending on how far (in graph distance) the sites are from each other. This generalizes work by Grosskinsky, Redig and Vafayi who study the symmetric case where only one timescale is present. Our analysis is based on potential theory and the martingale approach by Beltrán and Landim. This is joint work with Alessandra Bianchi and Cristian Giardinà. -- Alessandra Bianchi Dip. di Matematica Università di Padova Via Trieste, 63 - 35121 Padova, Italy phone: +39 049 827 14 06 fax: +39 049 827 14 28 e-mail: bianchi(a)math.unipd.it http://www.math.unipd.it/~bianchi/

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Annuncio di seminario
by Piccioni, Mauro 16 Nov '16

16 Nov '16

Dipartimento di Matematica, Sapienza Università di Roma Martedì 22 novembre Ore 14:00, Aula di Consiglio Seminario di Probabilità e Statistica Matematica Carlo Orrieri, Dipartimento di Matematica, Sapienza Università di Roma *Controlled Vlasov-type dynamics* *Abstract: The aim of the talk is to connect the optimal control of Vlasov-type PDEs with large systems of controlled interacting particles/agents. The main difference towards the classical mean-field theory, where the particle are freely interacting with each other, is the presence of a central planner influencing the dynamics. In this situation it is not obvious that the mean field limit should commute with the optimization. In order to develop a rigorous limit theory for this problem we employ the well-known concept of Gamma convergence.* *The talk is based on a work in project with M. Fornasier, S. Lisini and G. Savaré* Tutti gli interessati sono invitati a partecipare. Per qualsiasi richiesta di informazione scrivere a piccioni(a)mat.uniroma1.i <piccioni(a)mat.uniroma1.it>

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Open PhD position at Ghent University
by Elvira Di Nardo 15 Nov '16

15 Nov '16

%---------------------------------------------------------------------------------------------- ----- Messaggio inoltrato da Christophe.Ley(a)UGent.be ----- Data: Mon, 14 Nov 2016 16:15:02 +0000 Da: Christophe Ley <Christophe.Ley(a)UGent.be> Oggetto: Open PhD position at Ghent University Dear colleagues, I hope you are doing well. I am writing you to ask you the following: could you please forward the attached advertisement to your students who might be interested in doing a PhD in statistics at Ghent University? I am searching for a PhD student with mathematical/statistical background to work with me on the effect of the prior in Bayesian statistics. All details are in the attached document. I thank you very much in advance for your help. Best regards Christophe %------------------------------------------------------------------------------------ PhD Position in Statistics/Probability at Ghent University Department of Applied Mathematics, Computer Science and Statistics Promoter : Prof. Christophe Ley Duration: max. 4 years Requirement: Master degree in mathematics or statistics. Starting date: As soon as possible from 1st February onwards Description: This is a PhD position related to the BOF Starting Grant "Probabilistic distances and Bayesian statistics: new insights on and methods for the choice of the prior" obtained by the promoter. The choice of the prior is a key aspect in Bayesian statistics. In the literature there exist many different proposals of priors and diverging opinions on which prior to use when. The goal of this project is to tackle this problem from a new angle by importing probabilistic distances from probability theory. The PhD position also includes a short research stay at Oxford University. Application: A full application consists of ONE SINGLE PDF file which contains • a cover/motivation letter, • a comprehensive CV, • two names of reference persons. Please, submit your application via email to christophe.ley(a)ugent.be. Applications will be accepted until the position is filled, but all applications received before January 15, 2017 will receive full consideration. %------------------------------------------------------- Elvira Di Nardo Dept. Mathematics "G. Peano" University of Torino Via Carlo Alberto 10 10123 Torino, Italia tel. +39 0116702862 fax +39 0116702878 http://www.elviradinardo.it %-------------------------------------------------------

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Seminario di Giorgio Ferrari presso la Luiss, Mercoledi' 16 Novembre
by Fausto Gozzi 15 Nov '16

15 Nov '16

Luiss, Roma, Dipartimento di Economia e Finanza Viale Romania 32, Roma Mercoledi' 16 Novembre ore 18.10 aula 106 b Seminario di Giorgio Ferrari (Universitat Bielefeld) TITLE: Stochastic nonzero-sum games: a new connection between singular control and optimal stopping ABSTRACT: In this talk I present a new connection between a class of 2-player nonzero-sum games of optimal stopping and certain 2-player nonzero-sum games of singular control. I show that whenever a Nash equilibrium in the game of stopping is attained by hitting times at two separate boundaries, then such boundaries also trigger a Nash equilibrium in the game of singular control. Moreover a differential link between the players' value functions holds across the two games. An application to a problem of pollution control is finally discussed. The talk is based on a joint work with Tiziano De Angelis (The University of Leeds). Tutti gli interessati sono invitati a partecipare. Per qualsiasi richiesta di informazione scrivere a faustogozziluiss(a)gmail.com Fausto Gozzi Fausto Gozzi Dipartimento di Economia e Finanza LUISS - Guido Carli Viale Romania, 32 00197 Roma Italy tel 06.85225723 (office) FAX 06.86506513 e-mail: fgozzi(a)luiss.it webpage: http://docenti.luiss.it/gozzi/ old addresses: Fausto Gozzi Dipartimento di Matematica per le Decisioni Economiche Finanziarie e Assicurative Facolta' di Economia Universita' di Roma La Sapienza via del Castro Laurenziano 9 00161 Roma Italy tel 06/49766275 (office) FAX 06/49766765 and also Fausto Gozzi Dipartimento di Matematica Universita' di Pisa via Filippo Buonarroti n. 2 56127 Pisa Italy tel 050/2213270 FAX 050/2213224 e-mail: GOZZI(a)DM.UNIPI.IT --- Questa e-mail è stata controllata per individuare virus con Avast antivirus. https://www.avast.com/antivirus

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FCPNLO 2016
by Enrico Scalas 14 Nov '16

14 Nov '16

Car* collegh*, Vi segnalo la quarta edizione di Fractional Calculus, Probability and Non-Local Operators (FCPNLO 2016): 4th Workshop on Fractional Calculus, Probability and non-local Operators: Applications and recent Developments November 23-25, 2016 BCAM-Basque Center for Applied Mathematics, Bilbao, Basque Country, Spain http://www.bcamath.org/en/workshops/fcpnlo2016 Cordiali saluti, Enrico Scalas

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[Fwd: Post-doc position openings ERC-TRANSITION (ENS de Lyon, France)]
by davide gabrielli 14 Nov '16

14 Nov '16

---------------------------- Original Message ---------------------------- Subject: Post-doc position openings ERC-TRANSITION (ENS de Lyon, France) From: "Freddy Bouchet" <freddy.bouchet(a)ens-lyon.fr> Date: Sun, November 13, 2016 5:10 pm To: "Freddy Bouchet" <freddy.bouchet(a)ens-lyon.fr> -------------------------------------------------------------------------- Dear friends and colleagues, May I ask you to forward the following post-doc position announcement to your colleagues ? Best regards, Freddy Bouchet Post-doc position openings ERC-TRANSITION (ENS de Lyon, France) Positions 2 Postdoc positions Title Post doc 1: Large deviation theory and computation of rare events in climate dynamics Post doc 2: Computation of the probabilities of rare events in solar system dynamics TRANSITION Project The research project TRANSITION aims at developing statistical mechanics tools, mainly based on large deviation theory, in order to compute rare events which are essential in the understanding of complex dynamical systems. The problems studied span a complete range between theoretical and applied mathematics issues in developing large deviation theory for complex dynamical systems, their numerical computations, and their application to real systems. The project applications focus mainly on turbulent flows relevant for climate dynamics, but applications to other turbulent flows and the solar system dynamics are also considered. Start date Spring 2017, or Fall 2017 Please see more in the two attached descriptions. Freddy Bouchet Freddy Bouchet Laboratoire de physique (LR2 041) ENS de Lyon et CNRS 46, allée d'Italie (Site Monod) 69364 Lyon Cedex 07 Web: http://perso.ens-lyon.fr/freddy.bouchet/ Phone: (+33) (0)4 26 23 39 54 Mobile phone: (+33) (0)6 69 04 05 67 G -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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[iwfos2017] Remainder: IWFOS 2017. Call for Contributions
by Enea Bongiorno 11 Nov '16

11 Nov '16

*4th International Workshop on Functional and Operatorial Statistics (IWFOS 2017)* *LOCATION AND DATES: *A Coruña (SPAIN), June 15th - 17th, 2017. *DEADLINE TO SUBMIT SHORT CONTRIBUTIONS (6-8 pages in the required format): *December 31st, 2016. *PUBLICATIONS:* *Book of Proceedings:* Short versions (6-8 pages in the required format) of the accepted contributions (oral or poster) will be collected in a book published by *Springer* <http://www.springer.com/gp/>. *Special Issues in Scientific Journals*: This meeting will be the starting point for two Special Issues devoted to Functional Data Analysis: one in the *Journal of Multivariate Analysis* <http://www.journals.elsevier.com/journal-of-multivariate-analysis/call-for-…> and one in *Computational Statistics* <http://www.springer.com/statistics/journal/180>. It is worth mentioning that these Special Issues are not only open to the best presentations in IWFOS 2017, but also to any other innovative contributions in the field. *WEBSITE: *http://iwfos2017.udc.es Thank you for your attention. Hoping to see you in A Coruña, Sincerely Yours, On behalf of the Scientific and Organizing Committees, Ricardo Cao Philippe Vieu Germán Aneiros Enea Bongiorno -- 4th International Workshop on Functional and Operatorial Statistics IWFOS 2017, A Coruña (SPAIN) http://iwfos2017.udc.es --

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seminar announcemnt
by Marco Scarsini 10 Nov '16

10 Nov '16

Thursday 17 November from 12.00 to 13.00 LUISS room 207 viale Romania 32 00197 Roma. Speaker: Sylvain Gibaud (Institut de Mathématiques de Toulouse) Title: Demographic prisoner's dilemma: A probabilistic framework Abstract: I will present an evolutionary game model based on a multi-agent system. In it the evolution will not be managed by a generation system whereby after play a new population is drawn but instead by the fact that agents who perform poorly will die. Our model represents a spatialized prisoner's dilemma where the players move on a torus and play against other players only if they are at the same location. As it is usually done in evolutionary games, the action of the players will be fixed. A player will be either a cooperative player (who always cooperates) or a defecting player (who always defects). This system has been explored using simulations (or approximations). The presentation will show a probabilistic framework in which we can prove theoretical results. ******************************************************* Marco Scarsini Dipartimento di Economia e Finanza LUISS Viale Romania 32 00197 Roma, ITALY URL: http://docenti.luiss.it/scarsini/

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Annuncio di seminario
by Piccioni, Mauro 09 Nov '16

09 Nov '16

Dipartimento di Matematica, Sapienza Università di Roma Martedì 15 novembre Ore 14:00, Aula di Consiglio Seminario di Probabilità e Statistica Matematica Random dynamical systems: contraction and recurrence propertie Marc Peigné, Université de Tours Abstract: Consider a proper metric space X and a sequence (Fn) of i.i.d. random continuous mappings X → X. It induces the stochastic dynamical system (SDS) Xn = Fn ◦ · · · ◦ F1(x) starting at x ∈ X. We study existence and uniqueness of invariant measures, under some assumptions of contraction on the Fn, as well as recurrence and ergodicity of this process. We will consider two main examples: the case where the Fn are affine maps of the real line and the case where Xn is the reflected random walk on the positive real line. Tutti gli interessati sono invitati a partecipare. Per qualsiasi richiesta di informazione scrivere a piccioni(a)mat.uniroma1.it

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CEMRACS 2017 - Announcement (fwd)
by Tiziano Vargiolu 07 Nov '16

07 Nov '16

********************************************** ** ** CEMRACS 2017 SUMMER SCHOOL ** ** July 17 - August 25 ** MARSEILLE FRANCE ** ********************************************** The 2017 session of the CEMRACS summer school will be held from July 17 to August 25, at CIRM, Luminy (Marseille). This annual summer school on numerical methods has been existing for 20 years. The 2017 session will be dedicated to numerical methods for stochastic problems, including: * control problems, * uncertainty quantification, * mean field models, see the web page of the school for more information: http://smai.emath.fr/cemracs/cemracs17/ The summer school is organized as follows: * The first ten days are dedicated to lectures on numerical methods, including HPC training on computers. * During the next five weeks, Phd or Postdoc students work in groups of 2 or 3 on a numerical project that has been proposed by an industrial or a research department. Specialists of numerical methods and IT will support them. We are currently making three calls: *Call 1. Call 1 is for attending the lectures of the summer school (July 17-26), see the program at http://smai.emath.fr/cemracs/cemracs17/summerschool.html. *Call 2. Call 2 regards the submission of numerical projects: research departments and industrials can submit their own numerical projects. It is a way for them to accelerate the study of a numerical problem or of a numerical method. A project may include students who will work on it, or it may not include students. In the latter case, we will assign students to the project, see Call 3 below. More information is available at http://smai.emath.fr/cemracs/cemracs17/projects.html. Examples from the 2016 edition can be found at http://smai.emath.fr/cemracs/cemracs16/research/conf.php. *Call 3. Call 3 concerns students without a project who would like to work on a project, as defined in Call 2. So, this call is dedicated to Phd students and postdoc students that are not already part of a submitted project. They will be assigned to one of the projects without students (or with not enough students). Projects may end up with a publication, on the underlying numerical method or on some corresponding application. Proceedings will be edited after the event. The registration/accommodation fees are detailed on http://smai.emath.fr/cemracs/cemracs17/. For hosting a project, a participation to global expenses of CEMRACS is asked. For further details, please contact us. Emails should be sent to one of the organizers (see the list below) or at the email address cemracs17(a)smai.emath.fr Could you please circulate the information to colleagues and to industrial contacts that might be interested ? Best regards, the organizing committee: Bruno Bouchard (bouchard(a)ceremade.dauphine.fr) Jean-Fran?ois Chassagneux (chassagneux(a)univ-paris-diderot.fr) Fran?ois Delarue (delarue(a)unice.fr) Emmanuel Gobet (emmanuel.gobet(a)polytechnique.edu) Jer?me Lelong (jerome.lelong(a)imag.fr) - - - - - - - - - - - - - - - - - - - - - - - - - - Fran?ois Delarue Professeur Universit? Nice Sophia-Antipolis Laboratoire Dieudonn? Parc Valrose France-06108 Nice Cedex 02 (33) (0)4 92 07 62 80 http://math.unice.fr/~delarue

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Annuncio Sisbayes 2017 Workshop, Roma 7-8 febbraio 2017
by Brunero Liseo 07 Nov '16

07 Nov '16

SISbayes 2017 Workshop, Roma 7-8 February 2017. SISbayes 2017 is the first Workshop organized by the section on Bayesian Statistics of the Italian Statistical Society. SISbayes main goals are - To promote and coordinate applied and theoretical research in the statistical field - To encourage and organize specialized sessions and ad hoc tutorials at national and international statistical meetings - To disseminate Bayesian ideas and methods among young students and scholars in both Statistics and other fields. - To foster the application of the Bayesian paradigm in science, industry, business, finance, and official statistics. The workshop will consists of * Two tutorials delivered by prof. Alessandra Guglielmi - Politecnico di Milano: Bayesian Nonparametrics. prof. Michela Cameletti - Università di Bergamo: An Introduction to Bayesian Computing with INLA. * Five invited sessions * A Poster presentation session followed by a Poster exhibition. The website http://stat-events.wixsite.com/sisbayes2017 contains all the necessary information and it will be periodically updated. SISbayes 2017 is hosted and financially supported by Sapienza Università di Roma. Participants can register on the website. The registration fee (100 Euros; 60 Euros for students) includes admission to tutorials and conference sessions, congress materials, coffee breaks, poster session aperitif (Tuesday 7th) and lunch (Wednesday 8th) Brunero Liseo (on behalf of the Scientific Committee and the Organizing Committee) -- Organizing Committee S. Arima (Sapienza) M. Barbieri (Roma Tre) P. Brutti (Sapienza) F. De Santis (Sapienza) C. Grazian (Sapienza) S. Gubbiotti (Sapienza) B. Liseo (Sapienza) M. Perone Pacifico (Sapienza) S. Polettini (Sapienza) V. Sambucini (Sapienza) A. Tancredi(Sapienza) L. Tardella (Sapienza) Scientific Committee F. Corradi (Firenze) B. Liseo (Sapienza) A. Mattei (Firenze) A. Mira (Lugano) A. Ongaro (Milano Bicocca) S. Petrone (Bocconi) L. Ventura (Padova) ============================================ Brunero Liseo *Dip. di metodi e modelli per il territorio, l'economia e la finanza * *Sapienza Università di Roma* *Viale Castro Laurenziano, 9 Roma I-00161 *Tel. +39 06 49766973 Fax +39 06 4957606 *http://www.memotef.uniroma1.it/users/liseo-brunero <http://www.memotef.uniroma1.it/users/liseo-brunero>* =============================================

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Giornata di studi in onore di Gabriella Salinetti
by Luca Tardella 07 Nov '16

07 Nov '16

Il giorno 6 febbraio 2017 si terra' presso il Dipartimento di Scienze Statistiche di Sapienza Università di Roma la giornata di studi: "Advances in Probability, Statistics and Decision Theory" *** A Conference in Honor of Gabriella Salinetti*** E' disponibile il seguente sito web dedicato alla giornata con l'elenco dei relatori invitati e un programma preliminare http://stat-events.wixsite.com/gabriellaconference Nelle prossime settimane sarà aggiornato con ulteriori dettagli. L'iscrizione al convegno è gratuita, ma necessaria per ragioni organizzative. E' già possibile registrarsi sul sito compilando un semplice modulo on line. E' inoltre possibile contattare gli organizzatori al seguente indirizzo: gabriellaconference(a)gmail.com. Cordiali saluti

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Second Announcement : Third STAR workshop on Random Graphs
by Ben Hansen 04 Nov '16

04 Nov '16

Second Announcement : Third STAR workshop on Random Graphs The workshop will take place on Thursday 26 and Friday 27 January 2017 on the campus of the University of Utrecht (more details of the location and schedule will be added later). This will be the 3rd STAR Workshop on Random Graphs. The first took place in 2012 and the second in 2015. We are very pleased to announce the following prominent researchers have agreed to deliver plenary talks: - Marián Boguñá (Barcelona) - Mihyun Kang (Graz) - Vincent Tassion (Geneva/Zürich) - Nick Wormald (Melbourne) A limited number of slots for contributed talks are available. If you would like to propose a short talk, please let us know by e-mailing Ben Hansen at benhansen09(a)gmail.com. (In case of too much interest, selection will be based on relevance of the talk and the career stage of the speaker.) The workshop is open to all and free of charge, but please register to let us know that you are coming by sending an e-mail to: benhansen09(a)gmail.com The website of the workshop can be found at the address : http://www.math.uu.nl/stochsem/WorkshopRGs2017/

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Postdocs in Riemannian Manifold Optimization, Deep Learning and Information Geometry at RIST
by Luigi Malagò 03 Nov '16

03 Nov '16

[apologies for cross-posting] The Romanian Institute of Science and Technology (RIST) has an opening for 3 postdoc positions, in the context of the DeepRiemann project “Riemannian Optimization Methods for Deep Learning”, funded by European structural funds through the Competitiveness Operational Program (POC 2014-2020). The appointments will be for 2 years, with possible extensions up to 4 years. The DeepRiemann project aims at the design and analysis of novel training algorithms for Neural Networks in Deep Learning, by applying notions of Riemannian optimization and differential geometry. The task of the training a Neural Network is studied by employing tools from Optimization over Manifolds and Information Geometry, by casting the learning process to an optimization problem defined over a statistical manifold, i.e., a set of probability distributions. The project is highly interdisciplinary, with competences spanning from Machine Learning to Optimization, Deep Learning, Statistics, and Differential Geometry. The objectives of the project are multiple and include both theoretical and applied research, together with industrial activities oriented to transfer knowledge, from the institute to a startup or spin-off of the research group. The positions will be part of the new Machine Learning and Optimization group, which will be performing research at the intersection of Machine Learning, Stochastic Optimization, Deep Learning, and Optimization over Manifolds, including nature-inspired optimization algorithms, from the unifying perspective of Information Geometry. The group is one of two newly-formed groups in Machine Learning at RIST, where about 20 new postdoctoral research associates and research software developers will be hired in the next year. The official job announcement can be seen here: http://rist.ro/en/details/news/postdoc-positions-in-machine- learning-optimization-deep-learning-and-information-geometry.html # Jobs Description # The three open positions will focus on different and overlapping aspects of the project: 1) Optimization Algorithms over Statistical Manifolds with Applications to Deep Learning The postdoctoral researcher will conduct research on the design and implementation of novel first- and second-order methods for the optimization of functions defined over statistical models, such as exponential families, the Gaussian distribution, and Markov Random Fields. In particular the research will focus on the optimization problem associated to the training of a Neural Network, which will be studied from the perspective of Optimization over Manifolds with non-Euclidean geometries. The postdoctoral candidate will develop optimization algorithms which explicitly take into account the Riemannian and dual-affine Hessian geometries of the search space, given by the Fisher information metric. Such algorithms should be efficient, scalable, largely parallelizable, and suitable for the large scale and big data settings. Keywords: stochastic gradient descent, Riemannian manifolds, dually-flat Hessian geometries, optimization over manifolds, second-order optimization methods, large scale optimization, nature-inspired optimization algorithms 2) Theory of Neural Networks The postdoctoral researcher will contribute towards the definition of a probabilistic and geometric framework for the study of deep Neural Networks aimed at a better understanding of the working mechanisms behind the success of Deep Learning. The analysis is focused towards a better understanding of what enables Deep Learning systems to achieve remarkable successes, and of its limits, in classification and predictive analysis, with a particular focus on the learning task, in order to guide the development of novel algorithms. The research will include the study of the representational power of various Neural Networks topologies, by taking into consideration the impact of hierarchical architectures with respect to the expressiveness of the network; and the analysis of the number of local minima and of saddle points, which appear during the training and which strongly affect convergence of the optimization algorithms, depending on the nature of the network. Keywords: theory of neural networks, deep learning, learning representations, expressive power of neural networks. 3) Information Geometry of dually-flat Hessian Manifolds The postdoctoral researcher will focus on the characterization of first and second-order Riemannian and affine geometries of statistical models, or more in general Hessian manifolds, aimed at the study of optimization methods over statistical manifolds. Neural Networks can be modeled as statistical manifolds, or manifolds of Neural Networks, and the training of the network can be studied as an optimization problem over a non-linear manifold, where the weights of the network are the parameters of the model and thus the variables of the function to be optimized. The purpose of the analysis is to introduce alternative second-order approximations of a function over a statistical manifold, depending on the choice of the connection and thus how parallel transport is implemented, which are at the basis of the design of second-order optimization methods. Keywords: information geometry, geometry of statistical models, natural gradient, dually-flat manifolds, Hessian geometries. # Desired Qualifications # - PhD in machine learning, theoretical computer science, stochastic optimization, statistics, applied mathematics, including fields such as manifold optimization, differential geometry, statistical mechanics, and related fields - Strong publication record - Strong analytical skills, such as problem solving and logical thinking - Enthusiasm to work in a multidisciplinary and international research environment - Good written and oral communication skills in English Knowledge in machine learning is helpful, but not strictly mandatory. Doctoral students close to the competition of their thesis will also be considered. The positions are to start as early as December 2016 or at any agreed later date. Applications will be reviewed as they are received. RIST offers competitive salaries and top-level working conditions. The net salary for these positions will be around 2.000 euro per month, with a possible increase up to 2.200 euro, based on new tax incentives for research and development activities in Romania. Positions are endowed with travel resources. The cost of living in Cluj is significantly lower than in Western Europe or the USA (e.g., it is 1/3 of the cost of living in London, UK). # How to Apply # In order to apply to this position, the candidate should send an email to deepriemann.jobs(a)rist.ro, mentioning in the subject of the email "DeepRiemann Postdoc Application". The email should include among the attachments: - A cover letter - A complete CV with full list of publications - A short research statement (max 3 pages), which describes your research interests and explain why your skills, knowledge and experience makes you a suitable candidate for one or more of the open positions - The pdfs of 2 selected publications - Name and contact information of up to 3 referees, which will be contacted directly by the institute for a reference letter Informal inquiries can be sent to Dr. Luigi Malagò <malago(a)rist.ro>, Principal Investigator of the DeepRiemann project. # About the Institute # The Romanian Institute of Science and Technology is a non-governmental, not-for-profit, independent research institute, founded in 2009, with the purpose of offering scientists a place to conduct research in Romania with top working conditions, comparable to those you can find in Western Europe. RIST currently performs research on computational and experimental neuroscience, computational intelligence, machine learning, and dynamical systems. The institute is currently undergoing a phase of significant and sustained growth supported by European and Romanian structural funds, with plans for hiring around 20 new scientists and researchers in the next year. The institute has close contacts with the Babeș-Bolyai University, which is the largest university in Romania, and with the Technical University of Cluj-Napoca. The institute is located in Cluj-Napoca, in the heart of Transylvania, which has been named by Lonely Planet as the top region to visit in 2016. Cluj is a welcoming and innovative city, recently listed as one of the major tech hubs (with a 9% growth per year for IT industry). Cluj has 12 universities, over 70k students every year, and an extremely vibrant startup scene, which has recently named the Silicon Valley of Transylvania. Cluj is Europe's friendliest city for foreigners, according to a study by the UK Office of National Statistics, and Romania is no. 16 in the Internations best expat destinations of 2016. About 1100 French citizens, 800 Italian citizens and 500 German citizens live in Cluj (source). The city has an international airport, only 8km away from the city center, with flights to more than 30 European destinations. More information about Cluj: https://vimeo.com/171864331 https://vimeo.com/166021527 -- Luigi Malagò Principal Investigator Romanian Institute of Science and Technology - RIST Address: Str. Cireşilor 29, 400487 Cluj-Napoca, Romania Homepage: http://www.luigimalago.it Office: +40 364 408794 Mobile: +39 340 6249299

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