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Seminario Dott.ssa Zehra Eksi
by Katia Colaneri 14 Feb '17

14 Feb '17

Il giorno giovedì 16 febbraio alle ore 16 presso il Dipartimento di Economia dell'Università di Perugia, la Dott.ssa Zehra Eksi, Assistant Professor presso la WU-Vienna University of Economics and Business, e ospite del Dipartimento di Economia in qualità di professore visitatore nell'ambito del progetto YITP (Young Investigation Training Program), terrà un seminario dal titolo "EM Algorithm for Markov Chains observed via Gaussian Noise and Point Processes Information" *Abstract*: In this paper we obtain an Expectation-Maximization (EM) algorithm for a setting in which the state variable follows a finite-state Markov chain observed via diffusive and point process information. Such a setting may arise, for example, in the modelling of sovereign credit risk where information stems from default history (jump component) and CDS spreads (diffusive component). Obtaining the EM algorithm amounts to the derivation of finite-dimensional filters for quantities such as number of jumps and sojourn times associated to the Markov chain. In this context, we obtain both exact and unnormalized filters for the related quantities. Moreover, we compute discretized robust versions of the unnormalized filters. Next, we introduce a novel goodness of fit test to check how well the estimated model explains a given data set. Finally, we run a simulation study to test speed and accuracy of the algorithm. In particular, we provide a comparison for the estimates resulting from the robust and naive discretization and the value of point process information (This is a Joint work with Camilla Damian and Ruediger Frey) Tutti gli interessati sono invitati a partecipare. Dott.ssa Katia Colaneri Department of Economics, University of Perugia Via A. Pascoli 20, Perugia 06123- Italy e-mail: katia.colaneri@unipg <katia.colaneri(a)gmail.com>.it

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Mini-workshop announcement: Stochastic Analysis Day 2017, Monday, February 27, Pisa
by Carina Geldhauser 13 Feb '17

13 Feb '17

Stochastic Analysis Day 2017 The Stochastic Analysis Day 2017 will take place on Monday, February 27, at the Department of Mathematics of the University of Pisa. Speakers: * J.C. Alfonso Lopez (Braunschweig) * L. Bianchi (Berlin) * T. Funaki (Tokyo) * C. Geldhauser (Pisa) * H. Hatzikirou (Braunschweig) *M. Maurelli (Berlin) More information can be found on the website http://www.dm.unipi.it/pages/romito/SPASS/workshop/20170227/ Registration is not obligatory, but highly recommended for organizational purposes. To register, please contact the organizers.

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WIRN 2017 - First Call for Papers - 27th Italian Workshop on Neural Networks
by Marco Corazza 13 Feb '17

13 Feb '17

*** WIRN 2017 - First Call for Papers *** *** 27th Italian Workshop on Neural Networks *** *** June 14-16, Vietri sul Mare, Salerno, Italy *** WIRN 2017 – PRELIMINAY CALL FOR PAPERS The Italian Workshop on Neural Networks (WIRN) is the annual conference of the Italian Society of Neural Networks (SIREN). The conference is organized in co-operation with the International Institute for Advanced Scientific Studies (IIASS) of Vietri S/M (Italy), and is a traditional event devoted to the discussion of novelties and innovations related to field of Artificial Neural Networks. In recent years, it also became a multidisciplinary forum on psychological and cognitive theories for modelling human behaviours. The 27th Edition of the Italian Workshop on Neural Networks (WIRN 2017) will be held at the IIASS of Vietri sul Mare, near Salerno, Italy. CALL FOR PAPERS, SPECIAL SESSIONS PROPOSALS: Prospective authors are invited to contribute high quality papers in the topic areas listed below and proposals for special sessions. Special sessions aim to bring together researchers in special focused topics. Each special session should include at least 3 contributing papers. A proposal for a special session should include a summary statement (1 page long) describing the motivation and relevance of the proposed special session, together with the article titles and author names of the papers that will be included in the track. Contributions should be high quality, original and not published elsewhere or submitted for publication during the review period. Please visit the web site for further details of the required paper format. Papers will be reviewed by the Program Committee, and may be accepted for oral or poster presentation. All accepted contributions will be published in a special volume printed by Springer and indexed by SCOPUS. Authors will be limited to one paper per registration. Manuscripts should not exceed the limit of 8 pages. The description of the submission procedure will appear soon on the SIREN Website www.associazionesiren.org TOPIC AREAS: Suggested topics for the conference include, but are not limited to, the following research and application areas: - General Topics of Interest about Computational Intelligence: Neural Networks, Fuzzy Systems, Evolutionary Computation and Swarm Intelligence, Support Vector Machines, Complex Networks, Bayesian and Kernel Networks, Consciousness and Models of Emotion Cognitive and Psychological Models of Human Behavior. - Algorithms & Architectures: Among others: Opportunist Networks, Metabolic Networks, ICA and BSS, Deep Neural Networks, Bio-inspired Neural Networks, Wavelet Neural Networks, Intelligent Algorithms for Signal (Speech, Faces, Gestures, Gaze, etc) Processing and Recognition. - Implementations: Among others: Hardware Implementations and Embedded Systems, Neuromorphic Circuits and Hardware, Spike-based VLSI NNs, Intelligent Interactive Dialogue Systems, Embodied Conversational Agents. - Applications: Among others: Finance and Economics, Big Data Analysis, Neuroinformatics and Bioinformatics, Brain-Computer Interface and Systems, Data Fusion, Time Series Modelling and Prediction, Intelligent Infrastructure and Transportation Systems, Sensors and Network of Sensors, Smart Grid, Process Monitoring and Diagnosis, Intelligent and Adaptive Systems for Human-Machine Interaction. PAPER SUBMISSION: Important Dates - Special Session/Workshop proposals: March 16, 2017; - Paper Submission deadline: April 16, 2017; - Notification of acceptance: May 16, 2017; - Camera-ready copy: on site, June 1, 2017; - Conference Dates: June 14-16, 2017. More detailed instructions will follow soon on the SIREN home page www.associazionesiren.org or in www.wirn2017.polito.it. -- Marco Corazza Department of Economics Ca' Foscari University of Venice San Giobbe, Cannaregio 873 30121 Venezia, Italy Mobile: (+39) 366 602-9134 Phone: (+39) 041 234-6921 Fax: (+39) 041 234-7444 E-mail: corazza(a)unive.it --

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PhD in Financial Mathematics at the Scuola Normale Superiore (Pisa). Call 2017-2018
by Fabrizio Lillo 12 Feb '17

12 Feb '17

The call for applications to the 2017/2018 PhD program in Financial Mathematics at the Scuola Normale Superiore, Pisa, has been published on the web site http://phd.sns.it/call-2017-2018/, and on the home page of the institutional web site of the Scuola (www.sns.it). The deadline is February 20, 2017 Should you need any further information, please address your request to Fabrizio Lillo (fabrizio.lillo(a)sns.it). Thank you very much in advance. ---------------------------------------- Fabrizio Lillo Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa ITALY New website: fabriziolillo.wordpress.com phone: +39 050509159

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seminario Cosimo Munari in Bicocca /2
by Fabio Bellini 10 Feb '17

10 Feb '17

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seminario Cosimo Munari in Bicocca /2
by Fabio Bellini 10 Feb '17

10 Feb '17

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2 Seminari Firenze 14/2/17 ore 10 al DISEI
by cecilia mancini 09 Feb '17

09 Feb '17

Nell'ambito del ciclo di seminari del Dipartimento di Scienze per l'Economia e l'Impresa (DISEI) dell'Universita' di Firenze, il giorno Martedì 14 Febbraio 2017 (Edificio D6/Aula Bracco, ossia 1.12): si terranno i seguenti 2 seminari ore 10 Francesca Lilla (Università di Bologna) OPTION PRICING WITH HIGH FREQUENCY ESTIMATES OF CONTINUOUS AND DISCONTINUOUS VOLATILITY COMPONENTS ore 11 Susana Martins, University of Minho & NIPE, Braga, Portugal MODELLING SOVEREIGN DEBT CONTAGION: A SMOOTH TRANSITION APPROACH Tutti gli interessati sono cordialmente invitati a partecipare. La lista dei seminari Disei è raggiungibile al seguente indirizzo: http://www.disei.unifi.it/vp-104-seminari.html Abstract dei seminari OPTION PRICING WITH HIGH FREQUENCY ESTIMATES OF CONTINUOUS AND DISCONTINUOUS VOLATILITY COMPONENTS Jump-diffusion model represents the popular approach to match return stylized facts. Its estimation is simplified since prices are observable quantities, but it does not appear to be sufficient to yield the rapid increases in volatility which have been historically experienced. Examining price evolution at ultra high frequency, traditional measures of jump variation tend to spuriously assign a burst in volatility to the jump components. What jump-diffusion model identifies as genuine price jumps are period of heightened volatility. Starting from these findings, I develop a new multifactor volatility model, labeled as VARG-J, in which volatility is decomposed in two components: continuous and discontinuous. The first involves small changes while the second occasional big moves. The VARG-J model belongs to the class of affine discrete-time models based on high frequency volatility measures. The pricing approach performed in this paper allows to incorporate risk premia in order to compensate for two new sources of risk concerning both volatility components, beyond the risk related to shocks in log-returns. Combining high-frequency returns and option data, the empirical analysis illustrates that volatility jump component is a key ingredient for reproducing the observed volatility smile and for improving the pricing performances of S&P 500 Index options. MODELLING SOVEREIGN DEBT CONTAGION: A SMOOTH TRANSITION APPROACH ABSTRACT: In this paper, we study the timing and extent of the European sovereign debt contagion across nine Eurozone countries from 2005 until 2016. In this setting, financial contagion is measured as a significant increase in cross-market correlations which are assumed to follow a Smooth Transition Conditional Correlation (STCC-) GARCH model. The cross-market correlations change smoothly between two extreme states according to an observable transition variable. This variable is specified both as a function of time and lagged returns. When using time, a pre-crisis and two crises sub-periods are identified. Our results suggest contagion effects within the periphery countries, notably from Greece and Portugal, and between the periphery and core countries.

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CLADAG 2017: Call for Papers
by Francesca Greselin 09 Feb '17

09 Feb '17

11th Scientific Meeting of the Classification and Data Analysis Group of the Italian Statistical Society CLADAG 2017 September 13rd to 15th, 2017 University of Milano-Bicocca, Milan, Italy We happily announce and invite paper submissions for the *11th Scientific Meeting of the Classification and Data Analysis Group of the Italian Statistical Society - CLADAG 2017* conference, which will take place at the University of Milano-Bicocca, from September 13th to 15th. Areas of interest to the conference include: • Classification Theory • Multivariate Data Analysis • Proximity Structure Analysis • Applied Classification and Data Analysis • Software Developments People who wish to submit a paper should send the title of their paper by February 28th. Details of title submission are available at http://www.cladag2017.unimib.it The conference will be a mix of plenary, invited and submitted talks and posters. Invited sessions details can be seen at the conference website. ::: CLADAG 2017 KEYNOTES ::: We are delighted of having the following keynote speakers: *Antony Davison,* <http://statwww.epfl.ch/davison/davison.html> Institute of Mathematics, Ecole Poytechnique Federale de Lausanne, Switzerland *Sunil J. Rao,* <http://www.biostat.med.miami.edu/people/primary-faculty/sunil-rao> Division of Biostatistics, Department of Public Health Sciences University of Miami, Florida, USA *Roberto Rocci <http://economia.uniroma2.it/faculty/145/rocci-roberto>, *Dipartimento di Economia e Finanza, Università degli studi di Tor Vergata, Rome, Italy ::: CLADAG 2017 PAPERS AND SPECIAL ISSUES ::: Book of Abstract: all the accepted short papers will be published in the CLADAG2017 Proceedings, with ISBN. After the Conference, authors will be encouraged to submit a full paper (up to 8 pages) for the publication in the Springer series "Studies in Classification, Data Analysis, and Knowledge Organization" to be released in 2018. All submitted papers will undergo a regular reviewing process. ::: CLADAG 2017 DEADLINES ::: - Title and pre-registration: *February 28th, 2017* - Short paper: *March 31th, 2017* - Notification of acceptance: *May 15th, 2017* - Revised short paper: *May 31th, 2017* - Payment of registration fee: *from May 1rst, 2017* ::: CLADAG 2017 YOUNG RESEARCHERS AWARD ::: A Call for Ideas has been issued for organizing an event for Young researchers, on September 12th, with excellent proposals that are now under finalization. Prizes for the challenge will be awarded during the Conference. Looking forward to seeing you at CLADAG 2017! Francesca Greselin Local Organizing Committee

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de Finetti Risk Seminar - February 2017
by Emanuela Rosazza 09 Feb '17

09 Feb '17

On behalf of the Scientific Committee of the de Finetti Risk Seminars, we are glad to invite you to participate at the following Lecture Coalitionally Strategy Proof Social Choice Functions K.P.S. Bhaskara Rao Indiana University Northwest LOCATION: The seminar will be held on Wednesday, February 15, at 18.00 at room 3-E4-SR03, Bocconi University, Via Rontgen 1, 3rd floor, Milano. A refreshment will be offered at 17.30. 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) **************************************************** Emanuela Rosazza Gianin Dipartimento di Statistica e Metodi Quantitativi Università di Milano Bicocca Edificio U7 – 4° Piano Via Bicocca degli Arcimboldi, 8 20126 Milano Tel. 02 64483208 Fax. 02 64483105 e-mail: emanuela.rosazza1(a)unimib.it *****************************************************

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Master and PhD offers - LAAS, Touluse
by Cecchi, F. 08 Feb '17

08 Feb '17

Inoltro con richiesta di diffusione: 2 posizioni per Master/Phd thhesis in Touluse at LAAS sui seguenti argomenti: 1) Vehicular Networks 2) Stochastic Modeling of Computing Systems Dettagli in allegato. Saluti, Fabio

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