March 2018 - Random - Mailing list — Dipartimento di Matematica, UniPI

Concorso da RTDb di MAT/06 a Padova - scadenza 25/8/2016
by Marco Ferrante 25 Jun '24

25 Jun '24

Cari colleghi, vi segnalo che il Dipartimento di Matematica dell'Università di Padova ha bandito un posto di ricercatore di tipo B nel settore MAT/06. Il bando è disponibile alla pagina http://www.math.unipd.it/it/news/?id=1898 La scadenza per la presentazione delle domande è il 25 agosto 2016. Marco Ferrante

1 1

A Winter Day in Probability and Statistical Physics
by Francesca Romana Nardi 27 Apr '18

27 Apr '18

Carissimi, stiamo preparando la prossima giornata di seminari del 16 Marzo 2018 (terzo incontro della serie di giornate sulla probabilita` e le sue applicazioni alla Fisica, Biologia e Scienze sociali). Ricordo che ciascuno oratore fara` una lezione introduttiva e divulgativa di 45 minuti pensata proprio per i non esperti, seguita da altri 45 minuti di tipo seminario (vedi programma). Per maggiori informazioni e aggiornamenti sulle giornate passate e future abbiamo istituito una pagina web che vi invitiamo a visitare periodicamente. http://web.math.unifi.it/users/fnardi/seminari/ A WINTER DAY IN PROBABILITY AND STATISTICAL PHYSICS University of Florence Friday 16 March 2018 Lecturers: Frank den Hollander (Leiden) and Giovanni Peccati (Luxenbourg) Location: Aula Magna di Via S. Gallo 10, Firenze Prof. Frank den Hollander (Leiden University) Title: Large deviations for the Wiener sausage Abstract: The Wiener sausage is the 1-environment of Brownian motion. It is an important mathematical object because it is one of the simplest non-Markovian functionals of Brownian motion. The Wiener sausage has been studied intensively since the 1970's. It plays a key role in the study of various stochastic phenomena, including heat conduction, trapping in random media, spectral properties of random Schrödinger operators, and Bose-Einstein condensation. In these lectures we look at two specific quantities: the volume and the capacity. After an introduction to the Wiener sausage, we show that both the volume and the capacity satisfy a downward large deviation principle. We identify the rate and the rate function, and analyse the properties of the rate function. We also explain how the large deviation principles are proved with the help of the skeleton approach. Joint work with Michiel van den Berg (Bristol) and Erwin Bolthausen (Zurich). Giovanni Peccati (University of Luxembourg) Title: Stein's method and stochastic geometry Abstract: The so-called 'Stein's method' for probabilistic approximations is a collection of powerful analytical techniques, allowing one to explicitly assess the distance between the distributions of two random objects, by using caracterizing differential operators. Originally developed by Ch. Stein at the end of the sixties for dealing with one-dimensional normal approximations under weak dependence assumptions, Stein's method has rapidly become a crucial tool in many areas of modern stochastic analysis, ranging from random matrix theory and random graphs, to mathematical physics, geometry, combinatorics and statistics. In the first part of my talk, I will provide a self-contained introduction to Stein's method for normal approximations, by focussing on some connection with generalised integration by parts formulae, both in a continuous and discrete setting. In the second part of my talk, I will present some recent applications of Stein's method in stochastic geometry, with specific emphasis on the geometry of random fields, and on random geometric graphs. Program: 11.00-11.45 Introductory lecture: den Hollander 11.45-12.00 Break 12.00-12.45 Seminar: den Hollander 13.00-14.30 Lunch 14.30-15.15 Introductory lecture: Peccati 15.15-15.30 Break 15.30-16.15 Seminar: Peccati Organizers: F. Caravenna, N. Cancrini, E.N.M. Cirillo, P. Dai Pra, A. De Masi, D. Fanelli, F. Flandoli C. Giardina`, R. Livi, D. Marinucci, F. Martinelli, I.G. Minelli, F.R. Nardi, E. Presutti, B. Scoppola, E. Scoppola Note pratiche: 1) E` importante prenotare il biglietto del treno il piu` presto possibile per poter usufruire di sconti!!!! 2) Stiamo prenotando un ristorante con un paio di menu fissi (di cui uno vegerariano) che possa ospitarci, ma ho bisogno del numero di persone che vogliono mangiare insieme. A coloro che fossero interessati chiedo di mandare un email a francescaromana.nardi(a)unifi.it Resta fermo il fatto che saremo in pieno centro di Firenze, quindi ci sono moltissime altre possibilita` per mangiare se preferite regolarvi indipendentemente. Vi aspettiamo numerosi Francesca R. Nardi Dipartimento di Matematica e Informatica Università degli Studi di Firenze Viale Morgagni 67, Firenze, Italy

1 2

Roma Tre 10-04-2018: Hubert Lacoin, Wetting and Layering for Solid-and-Solid
by Pietro Caputo 30 Mar '18

30 Mar '18

SEMINARIO Probabilita' Hubert Lacoin (IMPA, Rio de Janeiro, Brasil) Titolo: Wetting and Layering for Solid-and-Solid Martedi' 10 Aprile 2018 ORE 14:30 Dipartimento di Matematica e Fisica Universita' degli Studi Roma Tre Largo San Leonardo Murialdo,1 - Pal.C - AULA 311 Abstract Solid-on-Solid (SOS) was introduced in the early 50s as a simplified model for lattice interfaces. It is believed to display the same low temperature behavior as three-dimensiona systems with phase coexistence while being considerably easier to analyze. The objective of this talk is to present the result we recently obtained for SOS interacting with a solid substrate, which is the problem associated with the following energy functional $$ V(phi)=eta sum_{xsim y}|phi(x)-phi(y)|-sum_{x}left(h{f 1}_{{phi(x)=0}}-infty{f 1}_{{phi(x)<0}} ight), $$ for $(phi(x))_{xin mathbb Z^2}$ (the graph of $phi$ representing the interface). We prove that for eta sufficiently large, there exists a decreasing sequence $(h^*_n(eta))_{nge 0}$, satisfying $lim_{n oinfty}h^*_n(eta)=h_w(eta)$, and such that: (A) The free energy associated with the system is infinitely differentiable on $mathbb R setminus left({h^*_n}_{nge 1}cup h_w( eta) ight)$, and not differentiable on ${h^*_n}_{nge 1}$. (B) For each nge 0 within the interval $(h^*_{n+1},h^*_n)$ (with the convention $h^*_0=infty$), there exists a unique translation invariant Gibbs state which is localized around height $n$, while at a point of non-differentiability, at least two ergodic Gibbs states coexist. The respective typical heights of these two Gibbs states are $n-1$ and $n$. The value $h^*_n$ corresponds thus to a first order layering transition from level $n$ to level $n-1$.

1 0

[WORKSHOP] Stochastic Analysis, Geometry and Statistics at Imperial College London, June 21-22
by Brigo, Damiano 27 Mar '18

27 Mar '18

Workshop on Stochastic Analysis, Geometry and Statistics at Imperial College London, June 21-22, 2018. http://www.imperial.ac.uk/sagest-2018/ Invited speakers: Michael Betancourt (Symplectomorphic, LLC) David Elworthy (Warwick) Peter Friz (TU Berlin) Mark Girolami (Alan Turing Institute) Karen Haberman (Bonn) Martin Hairer (Imperial College London) Yves Le Jan (Université Paris-Sud) Xue-Mei Li (Imperial College London) Terry Lyons (Oxford) Nigel Newton (Essex) James Norris (Cambridge) Grigorios Pavliotis (Imperial College London) Giovanni Pistone (Turin) Amanda Turner (Lancaster) ORGANISING COMMITTEE John Armstrong (KCL) Damiano Brigo Thomas Cass CONFERENCE SECRETARIAT Claudio Bellani Emilio Rossi Ferrucci FUNDING BODIES CFM - Imperial Institute of Quantitative Finance Department of Mathematics, Imperial College London Department of Mathematics, King's College London London Mathematical Society CONTACTS AND REGISTRATION http://www.imperial.ac.uk/sagest-2018/contacts-and-registration/ ------ Prof. Damiano Brigo Chair at the Department of Mathematics Mathematical Finance and Stochastic Analysis Groups Imperial College London www3.imperial.ac.uk/people/damiano.brigo

1 0

HFFE2018 CALL FOR PAPERS @ Scuola Normale Superiore
by Daniele Tantari 26 Mar '18

26 Mar '18

Dear colleagues, we are pleased to announce the workshop *Frontiers in High-Frequency Financial Econometrics * that will be held at Scuola Normale Superiore in Pisa (Italy) on 28-29 September 2018. The aim of the Workshop is to bring together leading experts and young researchers in the field of financial econometrics and mathematical finance with application to high-frequency finance. The main purpose is to listen to new ideas, and discuss about future perspective in the field. The organizers encourage submissions of papers on any topic within the overall theme of the conference with a special emphasis on the following areas: realized (co)variance estimation and forecasting, high-frequency finance, liquidity and price discovery, market microstructure analysis. The scientific committee of the workshop consists of: Giacomo Bormetti (University of Bologna), Fulvio Corsi (University of Pisa), Fabrizio Lillo (University of Bologna), Maria Elvira Mancino (University of Florence), Stefano Marmi (Scuola Normale Superiore), Davide Pirino (University of Rome "Tor Vergata"), Roberto Renò (University of Verona) *CALL FOR PAPERS* *Both papers and extended abstracts (max 4 pages) are accepted for presentation in a regular session or a poster session.* The final program of the workshop will include both submitted and invited papers. Our keynote speakers are: - *Yacine Ait-Sahalia *(Princeton University) - *Nikolaus Hautsch* (University of Vienna) - *André Lucas *(VU University Amsterdam) - *Mathieu Rosenbaum *(Ecole Polytechnique) For more information on submission and registration, see the attached flyer and the conference website https://www.hffe2018sns.com/ or contact hffe.workshop(a)gmail.com *Important dates:* Submission of a complete paper or extended abstract: May 31th, 2018 Decision: June 30th, 2018 Registration deadline: August 15th, 2018 On behalf of the organizing committee, Best Regards, Daniele Tantari

1 0

Opening of a Post Doc position in Luxembourg
by Giovanni Peccati 26 Mar '18

26 Mar '18

Cari Colleghi, ho appena aperto un bando per un postdoc di due anni e mezzo (30 mesi) nel mio gruppo in Lussemburgo. La scadenza è il 30 aprile 2018, ed il postdoc dovrebbe iniziare tra il primo giugno 2018 (al più presto) e il primo dicembre 2018 (al più tardi). Qui sotto, trovate l'annuncio in inglese, con le necessarie istruzioni. Cordiali saluti, Giovanni Peccati --------------------------------- Dear Colleagues, I am happy to announce the opening of a new post-doc position in my group at *Luxembourg University, with specific focus on stochastic analysis and stochastic geometry. * The length is *2 years and a half* (30 months), starting anytime between *June 1st, 2018,* and *December 1st, 2018*. The deadline for applications is *April 30th, 2018.* The exact details of the position can be found here: http://emea3.mrted.ly/1ryuy The webpage also contains a link for online applications. Please, do not hesitate to share this announcement with your colleagues - in case they might be interested. With my best regards, Giovanni Peccati --------------------------------------- -- 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

1 0

MSP 2018 - LAST CALL
by gianluca cassese 26 Mar '18

26 Mar '18

*LAST CALL FOR PAPERS* *The Mathematics of Subjective Probability - MSP 2018* The MSP 2018 Workshop will be held in September 3-5, at the University of Milan Bicocca. https://sites.google.com/view/MSP-2018 The workshop will host the following keynote speakers: - *Ehud Kalai*: *"Bayesian Learning with Economic Applications";* - *Rajeeva Karandikar*: *"Limit Theorems on Finitely Additive Probability Spaces"* ; - *Massimo Marinacci*: "*Uncertainty and All That*", - *Eugenio Regazzini*: "*Possible Effects of de Finetti's Coherence Principle on Statistical Reasoning*" - *William D. Sudderth*: "*Finite Additivity in Dubins-Savage Gambling and Stochastic Games *". MSP 2018 is open to contributions from all fields in which the subjective approach to probability is relevant, from Statistics to Economics and Game Theory. The list of potential topics includes (*but is not limited to*): - Ambiguity; Bayesian statistics; Coherence; Conditioning; Decision models under risk and uncertainty; Equivalent martingale measures; Finitely additive probabilities; Gambling; Game Theory; Limit theorems; Mass transportation; Merging of opinions; Multiple priors; Partial knowledge. The Springer Journal "*Decisions in Economics and Finance*" plans to devote a special issue to the workshop *Important dates* - *Paper submission -- April 31th* - *Notification of acceptance -- May 31st* - *Conference subscription -- June 30th* The organizing committee, --------------------------- Gianluca Cassese Pietro Rigo Barbara Vantaggi --------------------------

1 0

[COURSE] RobustStatistics@MilanoBicocca - SAVE THE DATE
by Francesca Greselin 23 Mar '18

23 Mar '18

ROBUST STATISTICS: FOUNDATIONS AND RECENT DEVELOPMENTS *April 9-13, 2018University of Milano-BicoccaMilan, Italy* Lecturers: Antony Atkinson <https://www.researchgate.net/profile/Anthony_Atkinson3>, London School of Economics, UK Marco Riani <https://www.researchgate.net/profile/Marco_Riani>, University of Parma, IT Agustin Mayo-Iscar <https://www.researchgate.net/profile/Agustin_Mayo>, University of Valladolid, ES RobustStatistics@MilanoBicocca is focused on giving a perspective on the modern challenges of robust statistics, combining novel statistical techniques with challenging problems in different application fields. *Monday April 9* Introduction to robust statistics, *Antony Atkinson *(9 a.m.-1 p.m.) Applications in Matlab, *Marco Riani *(2.30 - 5.30 p.m.) *Tuesday April 10* Robust regression analysis and transformations, *Antony Atkinson* (9 a.m.-1 p.m.) Applications in Matlab, *Marco Riani* (2.30 - 5.30 p.m.) *Wednesday April 11* Robust multivariate analysis and transformations, *Antony Atkinson* (9 a.m.-1 p.m.) Applications in Matlab, *Marco Riani* (2.30 - 5.30 p.m.) *Thursday **April 12* Introduction to robust clustering, *Agustin Mayo Iscar *(9 a.m.-1 p.m.) Applications in R and Matlab, *Agustin Mayo Iscar, Marco Riani *(2.30 - 5.30 p.m.) *Friday April 13 * Advances in robust clustering, *Agustin Mayo Iscar *(9 a.m.-1 p.m.) Applications in R and Matlab, *Agustin Mayo Iscar, Marco Riani *(2.30 - 5.30 p.m.) *For additional information please visit the course <http://www.cladag2017.unimib.it/robust-statistics-foundations-and-recent-de…> website <http://www.cladag2017.unimib.it/robust-statistics-foundations-and-recent-de…>.* *This course is supported by the Milano-Bicocca Department of STATISTICS and QUANTITATIVE METHODS <http://www.dismeq.unimib.it/en/>, within:* *The course is open to all people interested in the topic,we just ask to send an email to francesca.greselin(a)unimib.it <francesca.greselin(a)unimib.it> for organizational matters.*

1 0

Seminars at Scuola Normale Superiore, 27-28 March 2018, Elisa Alos
by Giulia 23 Mar '18

23 Mar '18

Dear all, Prof. Elisa Alos (Universitat Pompeu Fabra) will hold the two following Seminars. =========================================================================================================================================================================================== On Tuesday, 27 March 2018 — at 11:00 — Room: Aula Fermi: Title : The implied volatility surface in modeling problems Abstract: In the Black-Scholes model, the volatility parameter is constant. But it is well-known that, if we compute this volatility parameter by inverting market option prices, the result (the implied volatility) will depend on the strike price (a variation described graphically as a smile or skew) and on time to maturity. Classical stochastic volatility models, where the volatility is allowed to be a diffusion process, can capture the observed smiles and skews, but they cannot easily explain the term structure. For instance, recent numerical analysis state that the skew slope is approximately $O((T )^{-k})$, for some positive $k$ and where $T$ denotes the time to maturity, while the rate for these stochastic volatility models is $O(1)$. In this talk, we will see how to construct new stochastic volatility models that can describe this phenomena. Towards this end, we will present short-time approximations for the implied volatility skew and smile. The obtained formulas will give us a useful tool to identify the volatilities that can explain this term structure. Based on this approach, some new models have been proposed recently (as, for example, rough volatilities). In this talk we will discuss on the state of the art of this modeling research, and we will discuss the main advantages and disavantages of these new models. =========================================================================================================================================================================================== On Wednesday, 28 March 2018 — at 14:00 — Room: Aula Bianchi Scienze Title : On the link between the Malliavin derivative operator and the implied volatility behaviour Abstract: We use Malliavin calculus techniques to obtain an expression for the short-time behavior of the at-the-money implied volatility skew and smile, in the context of stochastic volatility models. Our analysis does not requiere the volatility to be a diffusion or a Markov process. The obtained results will give us a tool to construct new models that can allow us to explain the empirical term structure of the implied volatility surface (joint works with J. León and J. Vives). =========================================================================================================================================================================================== 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

1 0

Seminar at Scuola Normale Superiore, 27 March 2018, Elisa Alos
by Giulia 21 Mar '18

21 Mar '18

Dear all, On Wednesday, 27 March 2018 — at 11:00 — at the Scuola Normale Superiore (Room: Aula Fermi) Prof. Elisa Alos (Universitat Pompeu Fabra, Barcellona) will hold the following Seminar: Title : The implied volatility surface in modeling problems Abstract: In the Black-Scholes model, the volatility parameter is constant. But it is well-known that, if we compute this volatility parameter by inverting market option prices, the result (the implied volatility) will depend on the strike price (a variation described graphically as a smile or skew) and on time to maturity. Classical stochastic volatility models, where the volatility is allowed to be a diffusion process, can capture the observed smiles and skews, but they cannot easily explain the term structure. For instance, recent numerical analysis state that the skew slope is approximately $O((T )^{-k})$, for some positive $k$ and where $T$ denotes the time to maturity, while the rate for these stochastic volatility models is $O(1)$. In this talk, we will see how to construct new stochastic volatility models that can describe this phenomena. Towards this end, we will present short-time approximations for the implied volatility skew and smile. The obtained formulas will give us a useful tool to identify the volatilities that can explain this term structure. Based on this approach, some new models have been proposed recently (as, for example, rough volatilities). In this talk we will discuss on the state of the art of this modeling research, and we will discuss the main advantages and disavantages of these new models. 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

1 0

Seminar at Scuola Normale Superiore, 28 March 2018, Elisa Alos
by Giulia 21 Mar '18

21 Mar '18

Dear all, On Wednesday, 28 March 2018 — at 14:00 — at the Scuola Normale Superiore (Room: Aula Bianchi Scienze) Prof. Elisa Alos (Universitat Pompeu Fabra, Barcellona) will hold the following Seminar: Title : On the link between the Malliavin derivative operator and the implied volatility behaviour Abstract: We use Malliavin calculus techniques to obtain an expression for the short-time behavior of the at-the-money implied volatility skew and smile, in the context of stochastic volatility models. Our analysis does not requiere the volatility to be a diffusion or a Markov process. The obtained results will give us a tool to construct new models that can allow us to explain the empirical term structure of the implied volatility surface (joint works with J. León and J. Vives). 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

1 0

Seminario di Probabilità - Padova - Cambio aula
by Paolo Dai Pra 21 Mar '18

21 Mar '18

Vi invito al seguente seminario, già annunciato, di cui vi segnalo un cambio di aula. Martedì Venerdì 23 Marzo 2018 alle 11:30 in Aula 1BC45 della Torre Archimede presso il Dipartimento di Matematica dell'Università degli Studi di Padova. SPEAKER: Marco Zamparo AFFILIATION: Politecnico di Torino TITLE: Large Deviations Principles in Renewal Theory ABSTRACT: Cramér's theorem provides a large deviations principle for the empirical mean of independent and identically distributed random variables. In this seminar, I establish a generalization of Cramér's theorem for multivariate renewal-reward processes under optimal hypotheses. The way to attack the problem is the following. A large deviations principle is first obtained for renewal processes constrained by the event that one of the renewals occurs at a predetermined time. Then, results are transferred to standard renewal processes by resorting to conditioning. The constrained setting makes it possible to solve the problem by using an argument based on convexity and sub-additivity, which is inspired by the approach of Bahadur and Zabell to derive the modern form of the Cramér's theorem. Interestingly, with a different interpretation of the time coordinate, constrained renewal processes include important models of statistical mechanics, such as the pinning model of polymers and the Poland-Scheraga model of DNA denaturation. These models are briefly reviewed in the seminar. M. Zamparo, Large Deviations in Renewal Theory and Renewal Models of Statistical Mechanics, arXiv:1801.09941. Paolo Dai Pra Dipartimento di Matematica Via Trieste, 63 35121 Padova Tel. +39 0498271361 Fax +39 0498271428 daipra(a)math.unipd.it

1 0

Workshop `Randomness and Symmetry’, UCD, June 18-22, 2018
by Bisi, Elia 21 Mar '18

21 Mar '18

Ricevo e inoltro. ________________________________ From: Randomness & Symmetry Workshop <randsym18(a)ucd.ie> Sent: 21 March 2018 11:56 To: Bisi, Elia Subject: Workshop `Randomness and Symmetry’, UCD, June 18-22, 2018 Dear colleagues, This is a preliminary announcement for the workshop `Randomness and Symmetry’, to be held at University College Dublin, June 18-22, 2018. Confirmed speakers include - Elia Bisi (Warwick), Philippe Bougerol (Paris), Jeremie Bouttier (Saclay), Manon Defosseux (Paris), Persi Diaconis (Stanford), Nick Ercolani (Arizona), Jonathan Novak (San Diego), Satya Majumdar (Orsay), Dan Romik (Davis), Gregory Schehr (Orsay), Craig Tracy (Davis), Pierre Van Moerbeke (Leuven), Balint Virag (Toronto), Paul Zinn-Justin (Melbourne). There is limited space available (and some funding for PhD students and young researchers) to participate in this workshop. To apply / register your interest, please email randsym18(a)ucd.ie<mailto:randsym18@ucd.ie> before May 1, 2018. Further details are available on the workshop web page http://www.maths.ucd.ie/~noconnell/randsym18/main.html With best wishes, on behalf of the organisers, Fabio Deelan Cunden Antoine Dahlqvist Neil O’Connell

1 0

MSCA Master Class 2018 @ POLIMI
by Daniele Marazzina 20 Mar '18

20 Mar '18

Con preghiera di diffusione >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Politecnico di Milano is launching a pilot Master Class (MSCA EF MASTER CLASS 2018 @ POLIMI) for potential applicants to the MSCA - European Individual Fellowship call 2018. https://www.polimi.it/en/faculty-and-staff/calls-and-competitions/call-for-… The aim of the call is to attract and train young and talented researchers to successfully applying for MSCA European Fellowship with the Politecnico di Milano as host institution. Applications are open for the published 30 "Supervisors project proposals". Among those 30 projects, we announce the following Risk and Potentialities of Cryptocurrencies<https://www.polimi.it/fileadmin/user_upload/Lavora-con-noi/MSCA_EF_Master_C…> https://www.polimi.it/fileadmin/user_upload/Lavora-con-noi/MSCA_EF_Master_C… Candidates will be pre-selected based on their expression of interest, CV and motivation. Promising candidates will be invited to the Politecnico di Milano for 3 days (11-13 June 2018) to meet with their supervisors, to visit laboratories and facilities, to attend an in depth training course on the proposal writing and to make use of full support in the application writing process by POLIMI advisors. Candidate fellows and supervisors will be guided throughout the whole application process with deadline on 12th September 2018. Only those who get funding through the European Commission’s MSCA IF program will be admitted to Politecnico di Milano.

1 0

Lectures on "Neural Networks for Time Series Analysis" - University of Verona, Italy - March 21, 23, 28, 29, 2018
by Luca di persio 17 Mar '18

17 Mar '18

Dear all, this is to announce a minicourse on "Neural Networks for Time Series Analysis" that will take place at Ca'Vgnal 2 College of Mathematics - Dept. of Computer Science - UniVr Strada le Grazie, 15 - Verona located here https://goo.gl/maps/Yx2JU Speaker Oleksandr Honchar [HPA – University of Verona] Program, Abstract and timetable Lecture 1: Introduction to machine learning and time series analysis Lecture 2: Data preparation and feed-forward neural networks Lecture 3: Convolutional and recurrent neural networks Lecture 4: Building a trading strategy and further applications Abstract In this mini-course we will study artificial neural networks as a tool for time series classification and forecasting. We will review theoretical concepts of feed-forward, convolutional and recurrent neural networks, their modern architectures and implement them in Python. The emphasis of the mini-course is on practical applications, so we will use before mentioned algorithms to forecast stock prices movements and build a real asset trading strategy and backtest it. After attending this course, students will understand basic pipeline of machine learning based time series analysis: data preprocessing, fitting the model, evaluation of results and will be able to use their own models for building algorithmic trading strategies. 21/3 – 15:30-17:30 – Meeting Room – 2nd floor 23/3 – 15:30-17:30 – Meeting Room – 2nd floor 28/3 – 15:30-17:30 – Meeting Room – 2nd floor 29/3 – 15:30-17:30 – Meeting Room – 2nd floor The initiative is organised within the framework of the Stochastic Semester VPSMS18 [VPSMS2018.org] , see also: http://www.di.univr.it/?ent=seminario&id=4262&lang=it http://vpsms2018.org/event/minicourse-neural-networks- for-time-series-analysis/ Do not hesitate to contact me for further info. Best, LuCa __ Luca Di Persio - PhD College of Mathematics Dept. of Computer Science - University of Verona strada le Grazie 15 - 37134 Verona - Italy Tel : +39 045 802 7968

1 0

Seminario ENRICO SCALAS @ UniTo
by Federico Polito 16 Mar '18

16 Mar '18

********************************************************************* SEMINARI DI PROBABILITA' E STATISTICA MATEMATICA DIPARTIMENTO DI MATEMATICA "G. PEANO" UNIVERSITA' DEGLI STUDI DI TORINO ********************************************************************* Lunedì 26 Marzo 2018 alle ore 14:30 in Aula A presso il Dipartimento di Matematica "G. Peano" dell'Università degli Studi di Torino, Via Carlo Alberto 10, Il Prof. ENRICO SCALAS (Department of Mathematics, University of Sussex, UK) terrà un seminario dal titolo A STYLIZED MODEL FOR WEALTH DISTRIBUTION Abstract: The recent book by T. Piketty (Capital in the Twenty-First Century) promoted the important issue of wealth inequality. In the last twenty years, physicists and mathematicians developed models to derive the wealth distribution using discrete and continuous stochastic processes (random exchange models) as well as related Boltzmann-type kinetic equations. In this literature, the usual concept of equilibrium in Economics is either replaced or completed by statistical equilibrium. In order to illustrate this activity with a concrete example, we present a stylised random exchange model for the distribution of wealth. We first discuss a fully discrete version (a Markov chain with finite state space). We then study its discrete-time continuous-state-space version and we prove the existence of the equilibrium distribution. Finally, we discuss the connection of these models with Boltzmann-like kinetic equations for the marginal distribution of wealth. This paper shows in practice how it is possible to start from a finitary description and connect it to continuous models following Boltzmann's original research program. https://arxiv.org/abs/1609.08978 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 6702862 Web: www.federicopolito.it

1 0

Fwd: COFUND Parigi : 20 borse di dottorato
by Marco Romito 16 Mar '18

16 Mar '18

1 0

Seminario di Probabilità - Padova
by Paolo Dai Pra 16 Mar '18

16 Mar '18

Ho il piacere di invitarvi al seguente seminario, che si terrà Martedì Venerdì 23 Marzo 2018 alle 11:30 in Sala Riunioni VII Piano della Torre Archimede presso il Dipartimento di Matematica dell'Università degli Studi di Padova. SPEAKER: Marco Zamparo AFFILIATION: Politecnico di Torino TITLE: Large Deviations Principles in Renewal Theory ABSTRACT: Cramér's theorem provides a large deviations principle for the empirical mean of independent and identically distributed random variables. In this seminar, I establish a generalization of Cramér's theorem for multivariate renewal-reward processes under optimal hypotheses. The way to attack the problem is the following. A large deviations principle is first obtained for renewal processes constrained by the event that one of the renewals occurs at a predetermined time. Then, results are transferred to standard renewal processes by resorting to conditioning. The constrained setting makes it possible to solve the problem by using an argument based on convexity and sub-additivity, which is inspired by the approach of Bahadur and Zabell to derive the modern form of the Cramér's theorem. Interestingly, with a different interpretation of the time coordinate, constrained renewal processes include important models of statistical mechanics, such as the pinning model of polymers and the Poland-Scheraga model of DNA denaturation. These models are briefly reviewed in the seminar. M. Zamparo, Large Deviations in Renewal Theory and Renewal Models of Statistical Mechanics, arXiv:1801.09941. Paolo Dai Pra Dipartimento di Matematica Via Trieste, 63 35121 Padova Tel. +39 0498271361 Fax +39 0498271428 daipra(a)math.unipd.it

1 0

Master programmes at the University of Kent
by Fabrizio Leisen 15 Mar '18

15 Mar '18

Con preghiera di diffusione. Contattami pure se avete bisogno di ulteriori informazioni. Cordiali saluti, Fabrizio Leisen A postgraduate degree in Statistics from the University of Kent can open many doors both in industry and research. The taught programmes in Statistics and Statistics with Finance provide exemption from the professional examinations of the Royal Statistical Society and qualification for Graduate Statistician status. The School of Mathematics, Statistics and Actuarial Science has a strong reputation for world-class research and a well-established system of support and training, with a high level of contact between staff and research students. Postgraduate students develop analytical, communication and research skills. Developing computational skills and applying them to mathematical problems forms a significant part of the postgraduate training in the School. The School encourages all postgraduate statistics students to take part in statistics seminars and to help in tutorial classes. The Statistics Group is forward-thinking, with varied research, and received high rankings in the Research Excellence Framework (REF) 2014 for research power and quality. An overview of the Statistics group activities can be found at https://www.kent.ac.uk/smsas/statistics/research/index.html For more information about postgraduate statistics programmes at Kent visit www.kent.ac.uk/smsas or contact the Admissions Officer: E: smsaspgadmissions(a)kent.ac.uk T: +44 (0) 1227 816050 Director: Fabrizio Leisen, F.Leisen(a)kent.ac.uk -- Fabrizio Leisen Reader in Statistics School of Mathematics, Statistics and Actuarial Sciences Sibson Building, University of Kent, Canterbury, CT2 7FS http://www.kent.ac.uk/smsas/statistics/our-people/profiles/leisen_fabrizio.… http://sites.google.com/site/fabrizioleisen/

1 0

Call for PhD positions at University of Oslo
by Giulia Di Nunno 15 Mar '18

15 Mar '18

Dear Colleagues, this is to draw your attention to the call for two PhD positions at the University of Oslo in stochastic analysis and its applications to finance, insurance, energy and risk. Specifically one position is in the scopes of to the project STORM “Stochastics for Time-Space Risk Models" http://www.mn.uio.no/math/english/research/projects/storm/index.html <http://www.mn.uio.no/math/english/research/projects/storm/index.html> Description and call: https://www.jobbnorge.no/en/available-jobs/job/149487/phd-research-fellowsh… <https://www.jobbnorge.no/en/available-jobs/job/149487/phd-research-fellowsh…> The other one is in Stochastic Analysis and its Applications Description and call: https://www.jobbnorge.no/en/available-jobs/job/149496/phd-research-fellowsh… <https://www.jobbnorge.no/en/available-jobs/job/149496/phd-research-fellowsh…> For both the deadline of application is April 15th, 2018. You can also find a number of other open positions that can be interesting for a wider audience: http://www.mn.uio.no/math/om/jobb/ <http://www.mn.uio.no/math/om/jobb/> Please help to advertise these calls and bring them to the attention of your colleagues and possible candidates. Thank you in advance! Best wishes Giulia --- Giulia di Nunno Professor Department of Mathematics University of Oslo http://folk.uio.no/giulian/ <http://folk.uio.no/giulian/>

1 0

Bocconi summer school on "Graphical models" - deadline extension
by Antonio Lijoi 14 Mar '18

14 Mar '18

** DEADLINE EXTENSION FOR APPLICATIONS ** Bocconi Summer School in Advanced Statistics & Probability: “Graphical Models” http://asps.lakecomoschool.org July 9-20, 2018 La scadenza per inoltrare le domande di partecipazione alla Bocconi Summer School in Advanced Statistics & Probability su "Graphical Models" e' stata posticipata al ** 28 marzo 2018 ** La Summer School si svolgera’ presso la Lake Como School of Advanced Studies, e le lezioni saranno tenute da: Steffen Lauritzen (University of Copenhagen) Robin Evans (University of Oxford) Si ricorda che il Bocconi Institute of Data Science (BIDSA) conferira’ due BIDSA Awards a candidati meritevoli, che copriranno le registration fees. Cogliamo anche l’occasione per annunciare nuove iniziative all’interno della scuola. In particolare, quest'anno avremo il piacere di ospitare due seminari: Julia Mortera (Universita' di Rome Tre): "Graphical Models in Forensic Science" Fabio Corradi (Universita' di Firenze): "On the Probability of Causation for Querying the Cause of an Effect, and its Fundamental Conditions" Informazioni piu' dettagliate saranno rese disponibili quanto prima sul sito della Summer School. Inoltre, sono anche previsti seminari informali in cui i partecipanti, che ne facciano preventivamente richiesta, possono presentare la propria ricerca su temi attinenti la scuola. Ulteriori dettagli sono disponibili su http://asps.lakecomoschool.org o possono essere richiesti a bss.statistics(a)unibocconi.it

1 0

[short conference with courses]: NETWORKING BIOSTATISTICS
by Paola Rancoita 14 Mar '18

14 Mar '18

*NETWORKING BIOSTATISTICS* Networking Biostatistics is a short international COSTNET conference organized by Italian and Dutch International Biometric Society (IBS) regions to promote networks among IBS regions, networks among biostatisticians, early career researchers and PhD students, and collaboration among biomedical researchers and biostatisticians in general, looking for network procedures and statistical methods for a real contribution in modelling modern biomedical data. The conference includes five parts: 1. *Invited speaker sessions* on advanced methods for biomedical data. 2. *Short poster presentations*: poster contributions will be introduced with a 5 minutes flash presentation. 3. *Posters session with awards*. 4. *Round table* with spontaneous contributions on “Networking modern biomedical researchers and biostatisticians: from big Data to Big information” 5. *Two short courses on network modelling*: - “Co-data learning: the group-regularized ridge and elastic net” (Mark van de Wiel) - “Introduction to graphical models and applications to genomics” (Paola Vicard/Francesco Stingo) Confirmed invited speakers are: Bianca Papi, Rotterdam (NL) Francesco Stingo, Università degli Studi di Firenze (IT) Luca Tardella, Sapienza Università di Roma (IT) Maria Grazia Valsecchi, Università degli Studi di Milano-Bicocca (IT) Mark van de Wiel, VU University Medical Center (NL) Veronica Vinciotti, Brunel University London (UK) Ernst Wit, University of Groeningen (NL) Abstracts for poster presentations can be submitted by sending an email to netbiostat(a)ibs-italy.org by *March**18th, 2018*. The Conference will be held at Vita-Salute San Raffaele University (Milan) in *April 12-13th, 2018*. All details about the event can be found at the website: http://ibs-italy.org/?page_id=703&lang=en

1 0

avviso seminario Morlais
by Marco Alessandro Fuhrman 13 Mar '18

13 Mar '18

La professoressa Marie-Amélie Morlais del Laboratoire Manceau de Mathématiques (LMM), Institut du Risque et de l’Assurance IRA, Le Mans Université, terrà un seminario dal titolo Max-min and min-max systems of variational inequalities: connection with multidimensional BSDEs with bilateral obstacles and switching game il giorno lunedì 19 marzo 2018 alle ore 14:00 in sala rappresentanza del Dipartimento di Matematica dell'Università di Milano (via Saldini 50, 20133 Milano). Tutti gli interessati sono cordialmente invitati. La prof.ssa Morlais resterà in visita fino a giovedì 22 marzo. Cordiali saluti, Marco Fuhrman Abstract. This talk is based on two joint works (published in 2015 and 2017) with Prof. S. Hamadène (LMM Le Mans), Prof. B. Djehiche (KTH Stockholm Sweden) and X. Zhao (former PhD student of S. Hamadène) . These two papers focus on the connection between systems of interconnected PDEs, related multidimensional BSDEs and a general switching game (second paper). As an introduction, I recall the (rich) literature which links the optimal switching problem with explicit multidimensional BSDEs and related systems of variational inequalities. The relationship between those objects shall be given as well. I will finally present the so called min-max and max-min systems of PDEs whose viscosity solutions are heuristically identified (via the verification result) as the lower and upper value of the switching game. In the second part (first paper), I will explain the main steps allowing to construct solutions to both the min max and max min systems of variational inequalities. I stress the fact that, due to the non-linearities of those systems and the presence of interconnected obstacles, those solutions are a priori irregular: thus, to construct a solution, the use of viscosity theory is useful. In a third part (main result of the second paper) the connection with a multidimensional BSDE with bilateral obstacles is established (existence and uniqueness for the BSDE solution are then established in a Markovian framework of randomness). Finally and as an application, we provide an explicit relationship with the switching game: this consists in providing (sufficient) conditions ensuring the existence of both the switching game value and an optimal mixed strategy (as well as the relationship with the BSDE solution). Some open questions remaining unsolved shall be presented as a conclusion.

1 0

De Finetti Seminar: SCHACHERMAYER
by Marco Maggis 12 Mar '18

12 Mar '18

On behalf of the Scientific Committee of the de Finetti Risk Seminars, we are glad to invite you to participate at the following Lecture *The Amazing Power of Dimensional Analysis in Finance: Market Impact and the Intraday Trading Invariance Hypothesis* Walter Schachermayer University of Vienna Abstract: A basic problem when trading in financial markets is to analyze the prize movement caused by placing an order. Clearly we expect- ceteris paribus - that placing an order will move the price to the disadvantage of the agent. This price movement is called the market impact. Following the recent work of A. Kyle and A. Obizhaeva we apply dimensional analysis - a line of arguments well known in classical physics to analyze to which extent the square root law applies. This universal law claims that the market impact is proportional to the square root of the size of the order. We also analyze the dependence of the trading activity on a stock, i.e. number of trades per unit of time, in dependence of some suitable explanatory variables. Dimensional analysis leads to a 2/3 law: the number of trades is proportional to the power 2/3 of the exchanged risk. The mathematical tools of this analysis reside on elementary linear algebra. Joint work with Mathias Pohl, Alexander Ristig and Ludovic Tangpi. LOCATION: The seminar will be held on Wednesday, March 14, at 18.00 at Sala di Rappresentanza, Mathematics Department, Via Saldini 50, Milano. Scientific Committee: Prof. Simone Cerreia-Voglio (Univ. Bocconi) Prof. Marco Frittelli (Univ. degli Studi di Milano) Prof. Fabio Maccheroni (Univ. Bocconi) Prof. Massimo Marinacci (Univ. Bocconi) Prof. Emanuela Rosazza Gianin (Univ. Milano-Bicocca) Dott. Marco Maggis (Univ. degli Studi di Milano)

1 0

seminario Marco Bianchetti in Bicocca
by fabio bellini 09 Mar '18

09 Mar '18

Il giorno mercoledì 21 marzo alle ore 14.30 presso la Aula Seminari 4026 del DISMEQ al IV piano dell'edificio U7, il dott. Marco Bianchetti di Intesa Sanpaolo terrà un seminario su Learning the Optimal Risk - Advanced Risk-Based Portfolio Management with Global Optimization and Machine Learning Algorithms Abstract We consider the portfolio optimization problem from a trading and risk management point of view. Given a generic initial portfolio of financial instruments (e.g. stocks, derivatives and securities) with a given risk profile and subject to risk management limits, we aim to find optimal trading strategies, based on eligible tradable and liquid market instruments (i.e. quoted stocks and plain vanilla derivatives and securities), able to globally optimize the portfolio risk figures while respecting the required risk limits. We make use of an evolutionary approach based on genetic algorithms, where a population of candidate trading strategies is evolved using crossover, mutation and elitism, until optimal solutions are found as the best trading strategies that both minimize the selected risk measures and respect the risk limits. We apply our idea to different test cases based on real portfolios including linear and non-linear real financial instruments. We show that different optimal trading strategies may exist, depending on the combination of risk-based objective functions and limits. Our approach is general with respect to initial portfolios, risk profiles, measures and limits, eligible optimization instruments, trading strategies, and optimization algorithms. It can be applied, in principle, to real portfolios of financial institutions, provided that, in practice, a single operational framework and sufficient computational resources are available. Strong financial insight is needed both to select the optimization parameters, i.e. the eligible trading strategies, and to understand the financial soundness of the solutions proposed by the optimization metaheuristic (joint work with Marco Scaringi). Tutti gli interessati sono invitati a partecipare. -- Prof. Fabio Bellini Department of Statistics and Quantitative Methods University of Milano-Bicocca Via Bicocca degli Arcimboldi 8, 20126 Milano 0039-2-64483119 http://scholar.google.it/citations?user=P61L8P4AAAAJ&hl=it

1 0

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

Random March 2018