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Seminario LAVANCIER
by Matteo Ruggiero 03 Apr '15

03 Apr '15

**************************************************************** STATISTICS SEMINARS @ COLLEGIO CARLO ALBERTO **************************************************************** Venerdi' 10 Aprile 2015 alle ore 12:00, presso la Classroom 4 del Collegio Carlo Alberto, Moncalieri (TO), si terra' il seguente seminario: Frédéric LAVANCIER (Université de Nantes) DETERMINANTAL POINT PROCESS MODELS AND STATISTICAL INFERENCE Abstract: In this talk, I will demonstrate that Determinantal point processes (DPPs) provide useful models for the description of repulsive spatial point processes. Such data are usually modeled by Gibbs point processes, where the likelihood and moment expressions are intractable and simulations are time consuming. I will recall the definition of a DPP and review some of these appealing properties which make DPP models well suited for statistical analysis. In particular the ’most repulsive’ DPP will be characterized. Parametric models of DPPs will be introduced, where the likelihood and moment expressions can be easily evaluated and realizations can be quickly simulated. Some illustrations on real datasets will be presented. This work has been carried out in collaboration with Jesper Møller and Ege Rubak, Aalborg University. The study of the repulsiveness of DPPs is part of a joint work with Christophe Biscio, University of Nantes. Tutti gli interessati sono invitati a partecipare. Il seminario e' organizzato dalla "de Castro" Statistics Initiative (http://www.carloalberto.org/stats) in collaborazione con il Collegio Carlo Alberto. Cordiali saluti e auguri di buone feste, Matteo Ruggiero --- Matteo Ruggiero University of Torino and Collegio Carlo Alberto www.matteoruggiero.it

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Seminario di Roy Cerqueti presso Prometeia - Bologna
by Giacomo Scandolo 02 Apr '15

02 Apr '15

Il giorno Giovedì 9 Aprile 2015, alle ore 14:30 presso la sede di Prometeia (sala grande, primo piano) via G.Marconi 43, Bologna Roy CERQUETI (Università di Macerata) terrà un seminario dal titolo "Markov chains approximation for resampling and bootstrapping" Abstract Markov chain theory is proving to be a powerful approach to resample highly nonlinear time series in the context of bootstrap procedures. In this talk a discussion on this theme is provided, with a special focus on the estimation of the memory of a Markov chain (i.e. its order) and on the identification of its relevant states. In particular, the choice of memory lags and the aggregation of irrelevant states are obtained by looking for regularities in the transition probabilities. At this aim, suitable optimization models are developed under an information theory perspective. More specifically, two competing objectives that a researcher will in general pursue when dealing with bootstrapping are considered: preserving the “structural” similarity between the original and the simulated series and assuring a controlled diversification of the latter. Several critical issues emerge and are analyzed, such as the remarkable complexity of the optimization problem due to the high cardinality of the admissible regions and the presence of interconnections between more than one resampled series in a multivariate framework. Numerical experiments based on real data validate the theoretical treatment of the problem. --- Questa e-mail è priva di virus e malware perché è attiva la protezione avast! Antivirus. http://www.avast.com

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6 PhD positions in Spain, Italy and the Netherlands (fwd)
by Tiziano Vargiolu 02 Apr '15

02 Apr '15

---------- Forwarded message ---------- Date: Tue, 24 Mar 2015 10:37:54 +0100 From: Andrea Pascucci <andrea.pascucci(a)unibo.it> To: Tiziano Vargiolu <vargiolu(a)math.unipd.it> Cc: Kees Oosterlee <kees.oosterlee(a)cwi.nl>, Carlos V?zquez Cend?n <carlosv(a)udc.es> Subject: 6 PhD positions in Spain, Italy and the Netherlands Dear friends and colleagues, I would much appreciate if you could help me broadcast the announcement below. Sorry in advance for any duplicates. Best regards, Andrea Pascucci ****************************************************************************************************************************** Applications are invited for six Early Stage Researchers (ESRs, like PhDs) who will work closely with industrial partners on a PhD Thesis in financial mathematics. The gross amount of the research fellowship contract is the sum of: - a yearly living allowance which is a flat rate set out in the contract of about 39.800,00 euro par year obtained as a product of a flat rate times a correction coefficient; - a monthly mobility allowance which is a flat rate of 600,00 euro par month. For researcher with family charges will be paid a family allowance of 500,00 euro par month. The Envisaged Job Starting Date is October 2015. Applications should include copy of a valid ID with photo, a detailed CV, a motivation letter, a list of MSc courses and grades (transcripts), a copy of the master thesis, and if available a list of publications. Applications can be sent before 15 April 2015 following the instructions at https://portals.project.cwi.nl/wake-up-call ****************************************************************************************************************************** -- --------------------------------------------------------------- Andrea Pascucci andrea.pascucci(a)unibo.it Dipartimento di Matematica http://www.dm.unibo.it/~pascucci P.zza di Porta S. Donato, 5 40126 Bologna - Italy Office Tel. +39-0512094428 Fax +39 0510821834 Skype: andrea.pascucci Get DropBox here: http://db.tt/Y2GN2TCx ---------------------------------------------------------------

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Posizione post-doc in Budapest
by Fabio Zucca 01 Apr '15

01 Apr '15

Ricevo e inoltro il messaggio allegato con preghiera di diffusione a chi pensate possa essere interessato. Si tratta di una posizione post-doc in Budapest con una deadline ufficiale del 10 aprile (probabilmente "trattabile"). Mi scuso in anticipo con chi l'avesse già ricevuto. Fabio Zucca <><><><><><><><><><><><><> Fabio Zucca Assistant Professor Dipartimento di Matematica Politecnico di Milano Piazza Leonardo da Vinci 32 20133 Milano, Italy e.mail: fabio.zucca(a)polimi.it URL: http://www1.mate.polimi.it/~zucca/ Tel: +39022399 4546 Fax: +39022399 4621 <><><><><><><><><><><><><>

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No Free Lunch Seminar by Dr. Joao da Gama Batista, Fri April 10 1:00 PM Aula Bianchi @ SNS
by Giacomo Bormetti 31 Mar '15

31 Mar '15

Fri April 10 2015, 1:00 PM in Aula Bianchi, Scuola Normale Superiore Pisa Joao da Gama Batista Laboratoire de mathématiques appliquées aux systèmes École Centrale de Paris will deliver the seminar "Sudden trust collapse in networked societies" Abstract: Trust is a collective, self-fulfilling phenomenon that suggests analogies with phase transitions. We introduce a stylized model for the build-up and collapse of trust in networks, which generically displays a first order transition. The basic assumption of our model is that whereas trustworthiness begets trustworthiness, panic also begets panic, in the sense that a small decrease in trustworthiness may be amplified and ultimately lead to a sudden and catastrophic drop of collective trust. We show, using both numerical simulations and mean-field analytic arguments, that there are extended regions of the parameter space where two equilibrium states coexist: a well-connected network where global confidence is high, and a poorly connected network where global confidence is low. In these coexistence regions, spontaneous jumps from the well-connected state to the poorly connected state can occur, corresponding to a sudden collapse of trust that is not caused by any major external catastrophe. In large systems, spontaneous crises are replaced by history dependence: whether the system is found in one state or in the other essentially depends on initial conditions. All interested people are kindly invited. Best, Giacomo -- Giacomo Bormetti Assistant Professor of Financial Mathematics -------------------------- Faculty of Sciences Scuola Normale Superiore Pisa Piazza dei Cavalieri, 7 56126 Pisa - Italy email: giacomo.bormetti(a)sns.it http://mathfinance.sns.it/index.php/people/41-group-members/51-giacomo-borm… phone: +39 050 509248

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missDATA2015 : Last call for early bird registration
by Pierre-Yves Louis 29 Mar '15

29 Mar '15

from Vincent Audigier, *AUDIGIER Vincent,* Applied Mathematic Department, Agrocampus Ouest 65 rue de Saint-Brieuc, 35042 Rennes Cedex, France Tel: (+33)2 23 48 54 76 Website: http://vincentaudigier.weebly.com/ Dear colleagues, The statistic department of Agrocampus and the data mining group of the french statistical society organize the international conference on missing values and matrix completion MissData in Rennes (France) from 18 to 19 June 2015 at Agrocampus Ouest. The conference website is: http://missdata2015.agrocampus-ouest.fr The objective of this conference is to spotlight the latest research in missing values and matrix completion. We aim to bring together theoretical and applied researchers from different fields of application such as in social-science, genetics, medical analysis, survey, collaborative filtering, image reconstruction, etc. The program comprises R tutorials, invited lectures, a lightning talk session and a lively poster session during the reception. Awards will be given to up to three posters. The invited speakers are some of the main contributors on the topic from different fields:*Mouna Akacha* (Novartis, Switzerland), *Christophe Biernaki* (University Lille 1, France),*Stefan van Buuren* (University of Utrecht, the Netherlands),*John W. Graham* (Pennsylvania State University, US),*David Haziza*, (Montreal University, Canada),*Olga Klopp* (Paris Ouest University, France),*Roderick Little* (University of Michigan, US),*Joseph L. Schaefer* (Census Bureau, Washignton, US),*Shaun Seaman* (Medical Research Council Biostatistics Unit, UK),*Pierre Vandergheynst* (EPFL, Switzerland),*Recai Yucel* (University Albany, US). We would be glad to have you as a participant or even better as a contributor Important date: *Early bird registration and poster/lightning talk submission deadline : April 1, 2015* contact email:missdata2015@agrocampus-ouest.fr Vincent Audigier from the committee.

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Second call for papers: CIBB 2015, Naples, September 10-12, 2015
by Paola Rancoita 27 Mar '15

27 Mar '15

============================================================================================================================================== *SECOND CALL FOR PAPERS * *CIBB 2015* *12th International Meeting on Computational Intelligence Methods for Bioinformatics and Biostatistics* *CNR Research Area “Napoli 1”, Naples, Italy** **September 10-12, 2015** * *http://bioinfo.na.iac.cnr.it/cibb2015/** **cibb2015(a)gmail.com* ============================================================================================================================================== *Scope of CIBB 2015* CIBB (Computational Intelligence methods for Bioinformatics and Biostatistics) is a meeting with more than 10-year history. Its main goal is to provide a forum open to researchers from different disciplines to present problems concerning computational techniques in bioinformatics, systems biology and medical informatics, to discuss cutting edge methodologies and accelerate life science discoveries. Following this tradition and roots, this year's meeting will bring together researchers from the international scientific community interested in this field to discuss the advancements and the future perspectives in bioinformatics and biostatistics. Applied biologists are also invited to participate in order to propose novel challenges aimed to have high impact for molecular biology and translational medicine. *Technical areas addressed by CIBB 2015 include, but are not limited to:* High dimensional statistical analysis of omic data; Next generation sequencing bioinformatics; Multi-omic data integration; Methods for supervised and unsupervised learning; Prediction of protein structures; Methods for comparative genomics; Algorithms for molecular evolution and phylogenetic analysis; Mathematical modelling and simulation of biological systems; Systems and synthetic biology; Bio-molecular databases and data mining; Bio-medical text mining and imaging; Statistical methods for the analysis of clinical data; Methods for the visualization of high dimensional complex omic data; Software tools for bioinformatics. *CIBB 2015 is jointly organized by:* • INNS International Neural Network Society SIG Bioinformatics • INNS International Neural Network Society SIG Bio-pattern • IEEE-CIS-BBCT Task forces on Neural Networks and Evolutionary Computation • Istituto per le Applicazioni del Calcolo, “M. Picone”, CNR Napoli The scientific programs of CIBB 2015 will include Keynote Speakers, contributed papers, tutorial and special sessions. The contributed papers will be presented in plenary oral sessions, special sessions, or poster sessions. *Publications* Accepted papers will be published on a flash drive with a specific ISBN number for the conference proceedings. A selection of papers presented at CIBB 2015 will appear in a post-conference monograph. We are in contact with Springer to have them published in the Springer series of Lecture Notes in Bioinformatics (LNBI) as usual for CIBB. Moreover, we are planning to publish the best papers in an extended form in a special issue of an international scientific journal. *Important Dates * Tutorial and Special Session Proposal: April 3, 2015 Paper submission deadline: April 10, 2015 Notification of acceptance: June 12, 2015 Final paper due: July 10, 2015 Conference: September 10-12, 2015 *Tutorials and Special Sessions* *Tutorial proposals* to CIBB, including title, one page long abstract, and short CV of presenters, are due by April 3, 2015. Please send proposals to cibb2015(a)gmail.com. *Special Session proposals* to CIBB, including the session's title and scope, short CV of sessions chairs, preliminary list of at least 4 potential authors are due by April 3, 2015. Proposals of special sessions will be evaluated as soon as they are submitted. A special session must have at least 4 accepted papers. Please send proposals to cibb2015(a)gmail.com *Paper Submission* Papers must be prepared following the guidelines illustrated on the CIBB web site and should be long between 4 and 6 pages. Papers should be submitted in PDF format on the Easy Chair conference system. *Organizing Committee* /General Chairs/ - Claudia Angelini, Istituto per le Applicazioni del Calcolo, Italy - Adriano Decarli, University of Milan, Italy - Erik Bongcam-Rudloff, Swedish University of Agricultural Sciences, Sweden. /Biostatistics Technical Chair/ - Paola MV Rancoita, Vita-Salute San Raffaele University, Italy /Bioinformatics Technical Chair/ - Stefano Rovetta, University of Genova, Italy /Special Session and Tutorial Chairs/ To be communicated /Local Organizing Committee/ Valerio Costa, Institute of Genetics and Biophysics, Italy Italia De Feis, Istituto per le Applicazioni del Calcolo, Italy Angelo Facchiano, Istituto di Scienze dell'Alimentazione, Italy /Publicity Chair/ Francesco Masulli, University of Genova, Italy & Temple University, USA /Publication Chair/ Riccardo Rizzo, Istituto di Calcolo e Reti ad Alte Prestazioni, Italy /Steering Committee/ Pierre Baldi, University of California, Irvine, CA, USA Elia Biganzoli, University of Milan, Italy Alexandru Floares, Oncological Institute Cluj-Napoca, Romania Jon Garibaldi, University of Nottingham, United Kingdom Nikola Kasabov, Auckland University of Technology, New Zealand Francesco Masulli, University of Genova, Italy & Temple University, USA Leif Peterson, TMHRI, Houston, Texas, USA Roberto Tagliaferri, University of Salerno, Italy

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Seminario di Bernardo Nipoti a Pavia
by Carbone Raffaella 26 Mar '15

26 Mar '15

Cari colleghi, vi annuncio che martedì 31 marzo, alle ore 14 precise, nell'aula Beltrami del Dipartimento di Matematica dell'Universita' di Pavia, Bernardo Nipoti (Dipartimento di Economia e Statistica - Università di Torino) terrà un seminario dal titolo Rediscovery of Good-Turing estimators via Bayesian Nonparametrics Sunto: The problem of estimating discovery probabilities originated in the context of statistical ecology, and in recent years it has become popular due to its frequent appearance in challenging applications arising from biology, bioinformatics, genetics, linguistics, etc. A full range of statistical approaches, parametric and nonparametric as well as frequentist and Bayesian, have been proposed for estimating discovery probabilities. We investigate the relationship between the celebrated Good-Turing approach, which is a frequentist nonparametric approach developed in the 1940s, and the Bayesian nonparametric approach recently introduced in the literature. Specifically, under the assumption of a two parameter Poisson-Dirichlet prior, we show that Bayesian nonparametric estimators of discovery probabilities are asymptotically equivalent to suitably smoothed Good-Turing estimators. As a by-product of this result, we present and discuss a methodology for deriving asymptotic credible intervals to be associated to the Bayesian nonparametric estimators of discovery probabilities. Cordiali saluti, Raffaella Carbone -- Raffaella Carbone, PhD Ricercatore di Probabilità e Statistica Matematica Dipartimento di Matematica dell'Università degli Studi di Pavia

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Master of Science in Industrial and Applied Mathematics (MSIAM)
by Ester Mariucci 26 Mar '15

26 Mar '15

Buongiorno, volevo comunicare la creazione del nuovo Master of Science in Industrial and Applied Mathematics (equivalente ad una Laurea Magistrale) a Grenoble: http://msiam.imag.fr/doku.php Per gli studenti interessati, sono disponibili delle borse di studio finanziate dal labex Persyval: https://persyval-lab.org/en/education/call/master-scholarship-academic-year… Cordiali saluti, Ester Mariucci

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Seminario P. Brutti a Tor Vergata - lunedì 30 Marzo
by Claudio Durastanti 26 Mar '15

26 Mar '15

Ciclo di Seminari - Progetto ERC grant PASCAL (Probabilistic and Statistical Techniques for Cosmological Applications) Lunedì 30 marzo ore 14 - Aula Belpasso - Dipartimento di Matematica Università di Roma Tor Vergata Speaker: Pierpaolo Brutti, Università "La Sapienza" - Roma Title: Estimating the Intrinsic Dimension: The Bayesian way Abstract: In this talk I will first review some of the methods proposed for making inference on the intrinsic dimension of point cloud data sampled from a low-dimensional structure embedded in a high–dimensional ambient space, and then I will describe a Bayesian solution based on a composite likelihood built under working independence assumptions suggested by MacKay and Ghahramani. In order to get a posterior with approximately correct asymptotic behavior and curvature, I will consider some options to calibrate this pseudolikelihood and then compare in simulated and real examples a standard MCMC method against a variation of the default Bayesian framework of Ventura et al. (2013) (joint work with Alessandro Lanteri). Cordiali saluti Claudio Durastanti

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