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Politecnico di Milano - Seminario L. Calatroni
by Laura M. Sangalli 13 Jun '16

13 Jun '16

Si avvisa che in data 11/07/2016, alle ore 11:30 precise, presso Aula Seminari "Saleri" VI Piano, Dipartimento di Matematica, Politecnico di Milano, nell'ambito delle iniziative MOX, si svolgerà il seguente seminario: Relatore: Luca Calatroni, Experienced Researcher Marie-Curie fellow, Camelot Biomedical systems, Genova and MIDA group, Università degli studi di Genova Titolo: Design and optimisation of non-smooth Imaging models via Partial Differential Equations Abstract: Variational methods and Partial Differential Equations (PDEs) have been extensively employed for the mathematical formulation of a myriad of problems describing physical phenomena such as heat propagation, thermodynamic transformations and many more. In imaging, PDEs following variational principles are often considered. In their general form these models combine a regularisation and a data fitting term, balancing one against the other appropriately. Typically, Total variation (TV) regularisation is used due to its edge-preserving and smoothing properties. In this talk, we focus on the use of PDEs for the optimal design of several Imaging models. Starting from the use of higher-order and non-smooth variants of classical heat-type diffusion models often employed to counteract well-known TV reconstruction drawbacks (such as staircasing), we focus in particular on the use of non-smooth optimisation approaches with PDE constraints in the context of optimal parameter estimation for some non-standard image denoising problems. Finally, we consider some TV-based models recently reinterpreted in the framework of graphs and applied to some image segmentation problems. Tutti gli interessati sono invitati a partecipare. Cordiali saluti, Laura Sangalli -- Laura Maria Sangalli MOX - Dipartimento di Matematica Politecnico di Milano Piazza Leonardo da Vinci 32 20133 Milano - Italy tel: +39 02 2399 4554 fax: +39 02 2399 4568 email: laura.sangalli(a)polimi.it url: http://mox.polimi.it/~sangalli

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Seminario PILLAI
by Matteo Ruggiero 13 Jun '16

13 Jun '16

******************************************************************* STATISTICS SEMINARS @ COLLEGIO CARLO ALBERTO ******************************************************************* Lunedi 20 Giugno 2016 alle ore 12:00, presso l’Aula Rossa del Collegio Carlo Alberto, Moncalieri (TO), si terra' il seguente seminario: Natesh PILLAI (Harvard University) BAYESIAN FACTOR MODELS IN HIGH DIMENSIONS Sparse Bayesian factor models are routinely implemented for parsimonious dependence modeling and dimensionality reduction in high-dimensional applications. We provide theoretical understanding of such Bayesian procedures in terms of posterior convergence rates in inferring high-dimensional covariance matrices where the dimension can be larger than the sample size. We will also discuss other high dimensional shrinkage priors and discuss them in the context of factor models. 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, Matteo Ruggiero --- Matteo Ruggiero University of Torino and Collegio Carlo Alberto www.matteoruggiero.it

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Session on Networks and Big Data at next AMASES Conference, Catania, Sep 15-17, 2016
by Fabrizio Lillo 10 Jun '16

10 Jun '16

Dear Colleagues, a session entitled “Networks and Big Data Analysis in Economics, Finance, and Social Systems" will take place during the AMASES Annual Conference, which will be held in Catania in the period September 15-17, 2016. It is a great pleasure to invite you to submit an extended abstract to http://www.amases2016.unict.it by specifying the session title. For information, please contact: Fabrizio Lillo (fabrizio.lillo(a)sns.it) Michele Tumminello (michele.tumminello(a)gmail.com) I am looking forward to meeting you in Catania. Best regards Fabrizio Lillo and Michele Tumminello ---------------------------------------- Fabrizio Lillo Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa ITALY New website: fabriziolillo.wordpress.com phone: +39 050509159

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Re: [Random] New graduate college Bielefeld-Seoul, fellowships available
by Enrico Priola 09 Jun '16

09 Jun '16

2016-06-09 14:45 GMT+02:00 International Research Training Group 2235 < irtg(a)math.uni-bielefeld.de>: > > > It is my pleasure to inform you that we have recently established an > international research training group in the area of real and stochastic > analysis and neighboring fields at Bielefeld University. This graduate > college is run together with the math department at Seoul National > University. It currently offers new positions for future PhD students. > Please find the announcement here: > > https://irtg.math.uni-bielefeld.de/IRTG2235_open_positions.pdf > > I would like to ask you to forward this information to students who > might be interested in joining our college. Please note the very short > deadline, so fast action would be very welcome. If you have the > possibility to send the above link to some appropriate mailing group, > then please do so. You may find more information about the college at > our webpage > > https://irtg.math.uni-bielefeld.de/ > > Thank you very much for your kind support. > > With best regards, > > Moritz Kassmann > > ------------------------------------- > > > -- > Prof. Dr. Moritz Kassmann > International Research Training Group (IRTG) 2235 > Bielefeld University > Post Box 10 01 31 > 33501 Bielefeld > Germany > > Email: irtg(a)math.uni-bielefeld.de > https://irtg.math.uni-bielefeld.de/ > >

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PhD at University of Warwick
by Pietro Caputo 09 Jun '16

09 Jun '16

Ricevo e inoltro: -------------------------------- Dear Colleagues, we have got recently more funding for our doctoral training centre MASDOC which we can use for EU-students. In case you happen to know a candidate interested to do his PhD at Warwick either in analysis or probability please let us know. Further information on the web site ( http://www2.warwick.ac.uk/fac/sci/masdoc/ ). Any question - just let me know. Thanks Best wishes Stefan Dr. Stefan Adams Associate Professor (Reader) Mathematics Institute University of Warwick Coventry CV4 7AL United Kingdom Phone: +44 (0) 24 7652 3571 Mobile: +44(0)7852314861 Email: S.Adams(a)warwick.ac.uk

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Seminario Marina Santacroce
by Marco Maggis 08 Jun '16

08 Jun '16

Con preghiera di diffusione ai possibili interessati. Annuncio di Seminario, Martedì 21 Giugno, ore 12:30, Sala di Rappresentanza Dipartimento di Matematica (UniMi) Via C. Saldini 50 Milano Professoressa Marina Santacroce, Dipartimento di Matematica, Politecnico di Torino Title: From classical to general utilities maximization: control techniques versus other approaches. Abstract: In this talk we discuss methods which give constructive characterizations of the optimal strategies for expected utility maximization problems in a continuous semimartingale setting. In particular, we focus on a method which seems to provide a valid alternative to dynamic programming and works for general utilities and, besides, displays a clear link with convex duality.

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RTD B SECS-S06 in Bicocca (fwd)
by Tiziano Vargiolu 07 Jun '16

07 Jun '16

---------- Forwarded message ---------- Date: Tue, 07 Jun 2016 09:21:10 +0200 From: Fabio Bellini <fabio.bellini(a)unimib.it> To: vargiolu(a)math.unipd.it Subject: RTD B SECS-S06 in Bicocca Ciao Tiziano, potresti inoltrare alla tua lista? Grazie mille! Cari colleghi, vi segnalo che al DISMEQ della Universit? di Milano-Bicocca ? stato bandito un posto per un ricercatore di tipo B nel settore SECS-S06. Il bando ? disponibile sulla pagina http://www.unimib.it/go/48876/Home/Italiano/Bandi-e-concorsi/Bandi-per-pers onale-docente/Reclutamento-professori-e-ricercatori/Bandi-2016/2016-Ricerca tori-a-tempo-determinato la scadenza ? il 13 giugno 2016 (luned? prossimo). Saluti Fabio Bellini

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Bando Dottorato Modena, Parma, Ferrara
by Cristian Giardina 07 Jun '16

07 Jun '16

Cari Colleghi, Vi informo che è stato pubblicato il bando per l'attribuzione dei 10 posti del Dottorato in Matematica in convenzione tra l' Universita' di Modena/Reggio Emilia, l'Universita' di Parma e l'Universita' di Ferrara. Il bando scade il giorno *30 Giugno 2016 alle ore 13*. Possono partecipare coloro che conseguiranno la Laurea Magistrale entro il 31 Ottobre 2016. Tutte le informazioni si trovano ai siti ITALIANO: http://www.unimore.it/didattica/dottorato.html?ID=36 ENGLISH: http://www.unimore.it/didattica/doctorate.html?ID=36 Cordiali saluti, Cristian Giardina'

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Seminario GOLDIN (RGS, ADAMSS, CIMAB & Matematica Applicata)
by Giacomo Aletti 07 Jun '16

07 Jun '16

Con preghiera di diffusione tra tutti i possibili interessati, scusandomi per invii multipli. Cordialmente, Giacomo Aletti -------------- Nell'ambito dei Reading Group Seminars e del Seminario di Matematica Applicata, in collaborazione col centro ADAMSS e il CIMAB, il giorno venerdì 24 Giugno 2016, alle ore 17.00, nell'Aula C (secondo piano) del Dipartimento di Matematica dell'Universita' degli Studi di Milano, Via C. Saldini, 50, Milano, "Neuronal Classification from Network Connectivity " Rebecca GOLDIN George Mason University Abstract The mammalian brain is a large network of neurons (~10^8 in rodents up to 10^11 in humans) sparsely interconnected by synapses (~10^4 per neuron). Most synapses are directional contacts between extensive tree-like structures, namely the axon of the output neuron and the dendrite of the input neuron. The ongoing assembly of complete maps of such circuits (“connectomes”) is crucial to understanding the brain structure-function relationship. Although the exact connectivity pattern of each neuron is unique, the common working assumption posits the existence of distinct “neuronal classes”, such that neurons in the same class share more similar connectivity patterns than neurons in different classes. A rigorous definition of this concept is still lacking, and even the order of magnitude of the number of neuronal classes is source of wide disagreement in neuroscience. Connectomic data may become available within the next decade for at least parts of nervous system in animal models, yet the mathematics to analyze these data is still underdeveloped. Indeed, that same mathematics should inform the data collection itself: Should we collect as much data from one animal as possible, or from as many animals as possible? Are more data with less precision better or worse than more precision with less data? We developed a class of probabilistic models that formalizes the concept of neuronal class based on network connectivity. Given a complete list of all neurons and their connections in a network, the model derives the number of neuronal classes, and an assignment of each neuron to a class. We fit the model using sparse singular value decomposition, and cluster the latent vectors into groups, and infer the neuronal classes. We tested the models on neurobiologically realistic simulated data, and found that our approach is robust and computationally tractable. We generated 50 graphs with 32,768 vertices each by stochastically assigning (secret) groups. One model consistently returned 100% correct class assignment, with 2% error in individual neural assignment, and reconstructed probability matrices well within the precision specified in the original probability matrix. This method provides a practical and theoretical foundation to bridge neuronal- and system-level neuroanatomy. Joint work with: Giorgio Ascoli, Carey Priebe, David Marchette, Paul Salomonsky, and Joshua Vogelstein t. ================= Reading Group Seminars: The Reading Group Seminars (RGS) are organized within an open community of researchers interested in applying up to date mathematical modeling and data analysis approaches to the study of biological systems. The RGS take place at the Math. Department in Milan (via Saldini). Initiatives and updates are published on the website: http://rgs.mat.unimi.it/.(http://rgs.mat.unimi.it/) -- ------------------------------- Giacomo Aletti, Associate Professor ADAMSS Centre (ex MIRIAM) Advanced Applied Mathematical and Statistical Sciences Department of Mathematics (www.mat.unimi.it) Via Saldini, 50 20133 Milano, Italy Tel: +39-02-503.16158 Fax:+39-02-503.16090 Cell:+39-340-9739142

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Seminario di Probabilità - Padova
by Paolo Dai Pra 06 Jun '16

06 Jun '16

Ho il piacere di invitarvi al seguente seminario, che si terrà Giovedì 9 Giugno, alle 14:30, in Sala Riunioni del VII piano (accesso scale A e B) della Torre Archimede presso il Dipartimento di Matematica dell'Università degli Studi di Padova. SPEAKER: Giuseppe Cannizzaro AFFILIATION: TU Berlin TITLE: Malliavin Calculus for Regularity Structures: the case of gPAM ABSTRACT: The theory of Regularity Structures allowed to solve a number of ill-posed stochastic partial differential equations. In this presentation, after recalling the main aspects of Hairer's work, we will show how it is possible to introduce Malliavin Calculus tools in this context in order to investigate probabilistic properties of the solutions to such equations. We will focus on one standard example of the theory, namely the generalized Parabolic Anderson Model (gPAM), and prove that its solution, when evaluated at a space-time point, admits a density with respect to the Lebesgue measure. Paolo Dai Pra Dipartimento di Matematica Via Trieste, 63 35121 Padova Tel. +39 0498271361 Fax +39 0498271428 daipra(a)math.unipd.it

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