cv chiara ra vazzi

7/23/2019 Cv Chiara Ra Vazzi

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Chiara Ravazzi

Politecnico di Torino (DET),Corso Duca degli Abruzzi, 24I-10129 Torino (TO), ITALY

Mobile: +39 338 7479232

Phone: +39 011 (090) 42 48

Webpage: calvino.polito.it/~ravazzi

E-mail: [email protected]

Personal dataSurname Ravazzi

First/Given Name Chiara

Nationality Italian

Place and date of birth Torino, 17th January 1982

PositionsFrom Feb. 2012 Research assistant, Politecnico di Torino , Dip. di Elettronica e delle Telecomunicazioni

(DET)

From Jan. 2013 Research associate, Istituto di Elettronica e di Ingegneria dell’Informazione e delle Tele-comunicazioni (IEIIT) and Consiglio Nazionale delle Ricerche (CNR), Systems and ControlTechnologies group

Feb. 2011 - Jan. 2012 Research assistant, Politecnico di Torino , Dipartimento di Matematica (DIMAT)

From Sep. 2007 Teaching assistant, Politecnico di Torino

Jan. 2008 - Dec. 2010 PhD student, Politecnico di Torino , Dipartimento di Matematica (DIMAT)

May 2007 Internship, Istituto Superiore Mario Boella , Torino

EducationMar. 2011 PhD in Applied Mathematics, Politecnico di Torino

Advisor: Prof. Fabio FagnaniThesis: Asymptotic analysis of turbo-like codes. Average spectra and minimum distances

Feb. - Jun. 2010 Visiting program at LIDS, Massachusetts Institute of Technology Supervisor: Prof. Devavrat Shah

Jan. 2008 - Dec. 2010 PhD program in Mathematical models for Engineering, Politecnico di Torino Advisor: Prof. Fabio Fagnani

Jul. 2007 M.S. Mathematical Engineering (110/110 cum laude ), Politecnico di Torino Advisor: Prof. Fabio FagnaniThesis: Interconnessioni seriali multiple: probabilita’ di errore e distanze minime

Dec. 2005 B.S. Mathematical models for Engineering (110/110 ), Politecnico di Torino Advisor: Prof. Davide AmbrosiThesis: Formazione di strutture spaziali in sistemi di Turing

Jul. 2001 High school degree (100/100 ), Liceo Scientifico Galileo Ferraris , Torino

Current research areaInterests Mathematics of information and coding theory, dynamical systems, distributed control,

discrete mathematics, combinatorics, applied probability

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http://calvino.polito.it/~ravazzi

mailto:[email protected]

mailto:[email protected]

http://calvino.polito.it/~ravazzi



Keywords Asymptotic analysis of Turbo-like codes and structured LDPC, Graphical models, Belief Propagation algorithm and its applications, Compressive Sensing, Matrix completion, Dis-tributed algorithms for estimation and classification in sensor networks

Publications in peer-reviewed international journals

[J10] C. Ravazzi, S. M. Fosson, E. Magli, Randomized algorithms for distributed nonlinearoptimization under sparsity constraints, to appear on IEEE Transactions on Signal Processing.

[J9] C. Ravazzi, E. Magli, Gaussian mixtures based IRLS for sparse recovery with quadraticconvergence, IEEE Transactions on Signal Processing, Vol. 63(13), pp 3474-3489, July 2015.

[J8] C. Ravazzi, E. Magli, A. Bay, D. Carrera, S.M. Fosson, P. Fragneto, M. Grella, C.Ravazzi, E. Magli, to appear on EURASIP Journal on Wireless Communications and Networking.

[J7] C. Ravazzi, S. M. Fosson, E. Magli, Distributed iterative thresholding for 0/1-regularized linear inverse problems, IEEE Transactions on Information Theory , Vol.61(4), pp. 2081-2100, April 2015

[J6] P. Frasca, H. Ishii, C. Ravazzi, R. Tempo, Distributed randomized algorithms for opin-ion formation and power systems estimation: A tutorial overview, to appear onEuropean Journal of Control.

[J5] C. Ravazzi, P. Frasca, R. Tempo, H. Ishii, Ergodic Randomized Algorithms and Dy-namics over Networks, IEEE Transactions on Control of Network Systems , Vol. 2(1),pp. 78 - 87, March 2015

[J4] F. Fagnani, S. M. Fosson, and C. Ravazzi, A distributed algorithm for ML estimationand detection in sensor networks, SIAM Journal on Control and Optimization, Vol.52(1), pp 189–218, Jan. 2014

[J3] F. Fagnani, S. M. Fosson, and C. Ravazzi, Consensus-like algorithms for estimation of Gaussian mixtures over large scale networks, Mathematical Models and Methods in

Applied Sciences , Vol. 24(2), pp. 1-21, Feb. 2014[J2] C. Ravazzi, F. Fagnani, On the growth rate of input-output weight distribution of

convolutional encoders, SIAM Journal on Discrete Mathematics , Vol. 26(3), pp. 1310-1345, Sep. 2012.

[J1] C. Ravazzi, F. Fagnani, Spectra and Minimum Distances of Repeat Multiple-Accumulate codes, IEEE Transactions on Information Theory , Vol. 55(11), pp. 4905-4924, Nov. 2009.

Books and book chapters[B4] F. Fagnani, S. M. Fosson, C. Ravazzi, Some introductory notes on random graphs, in

”Mathematical Foundations of Complex Networked Information Systems”, Lecture Notes

in Mathematics, CIME subseries, Springer , 2015 (in press).[B3] E. Magli, G. Coluccia, C. Ravazzi, Compressed sensing for distributed systems,

SpringerBriefs in Electrical and Computer Engineering , Springer, 2015 (in press).

[B2] C. Ravazzi, M. Righero, Introduzione all’analisi complessa e alla teoria delle dis-tribuzioni: quiz ed esercizi svolti, CLUT Editrice , Torino 2013.

[B1] C. Ravazzi, M. Righero, Quiz ed esercizi svolti di Analisi I, CLUT Editrice , Torino 2011.

Submitted papers and preprints[S1] C. Ravazzi, Asymptotic analysis of turbo-like codes: average spectra and minimum

distance, Preprint.

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[S2] C. Ravazzi, E. Magli, Bayesian tuning for support detection and sparse signal estima-tion via iterative shrinkage-thresholding, submitted to IEEE International Conference on Acoustics, Speech, and Signal Processing 2016

[S3] C. Ravazzi, S. M. Fosson, T. Bianchi, E. Magli, Signal sparsity estimation from compres-sive noisy projections via sparsified random matrices, submitted to IEEE International

Conference on Acoustics, Speech, and Signal Processing 2016

Proceedings/Abstracts in international conferences[C15] A. Bay, D. Carrera, S.M. Fosson, P. Fragneto, M. Grella, C. Ravazzi, E. Magli, Dictionary

design for sensor network localization via block-sparsity, Proc. of 17th International Workshop on Multimedia Signal Processing , Xiamen, China, Oct. 19-21, 2015

[C14] C. Ravazzi, E. Magli, Quadratically Fast IRLS for sparse signal recovery, SPARS 2015 Signal Processing with Adaptive Sparse Structured Representations , Cambridge, UK, 6-9July. 2015

[C13] C. Ravazzi, E. Magli, Fast and robust EM-based IRLS algorithm for sparse signal re-covery from noisy measurements, Proc. of IEEE International Conference on Acoustics,

Speech, and Signal Processing , Brisbane, Australia, 19-24 Apr. 2015

[C12] C. Ravazzi, E. Magli, Fast IRLS for sparse reconstruction based on gaussian mixtures,International Biomedical and Astronomical Signal Processing (BASP) Frontiers workshop ,Villars-sur-Ollon, Switzerland, 25-30 Jan. 2015

[C11] C. Ravazzi, S. M. Fosson, E. Magli, Energy-saving gossip algorithm for compressedsensing in multi-agent systems, Proceedings of IEEE International Conference on Acous-tics, Speech, and Signal Processing , Florence, Italy, 4-9 May 2014

[C10] C. Ravazzi, S. M. Fosson, E. Magli, Distributed soft thresholding for sparse signal re-covery, Proceedings of IEEE Global Communications Conference , Atlanta, 9-13 December2013

[C9] A. Fiandrotti, S. M. Fosson, C. Ravazzi, E. Magli, PISTA: Parallel Iterative Soft Thresh-olding Algorithm for Sparse Image Recovery, Proceedings of Picture Coding Sympo-sium, San Jose, California, 8-11 December 2013

[C8] P. Frasca, C. Ravazzi, R. Tempo, H. Ishii, Gossips and Prejudices: ergodic randomizeddynamics in social networks, Proceedings of IFAC Workshop on Distributed Estimationand Control in Networked Systems , Koblenz, Germany, 25-26 September 2013

[C7] C. Ravazzi, P. Frasca, R. Tempo, H. Ishii, Almost sure convergence of a random-ized algorithm for relative localization in sensor networks, Proceedings of 52nd IEEE Conference on Decision and Control , Florence, Italy, 10-13 December 2013

[C6] C. Ravazzi, P. Frasca, H. Ishii, R. Tempo, A distributed randomized algorithm forrelative localization in sensor networks, Proceedings of European Control Conference ,Zurich, 17-19 July 2013

[C5] F. Fagnani, S. M. Fosson, and C. Ravazzi, A large scale analysis of a classificationalgorithm over sensor networks, Proc. of Conference on Decision and Control, Maui,Hawaii , Dec. 2012.

[C4] F. Fagnani, S. M. Fosson, and C. Ravazzi, Input driven consensus algorithm for esti-mation and classification in sensor networks, in Proc. of Conference on Decision and Control and European Control Conference , Orlando, Florida, Dec. 2011.

[C3] C. Ravazzi, F. Fagnani, Minimum distance properties of multiple-serially concate-nated codes, in Proc. International symposium on turbo codes & iterative informationprocessing , pp. 78-82, Brest, France, Sep. 2010

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[C2] C. Ravazzi, F. Fagnani, Hayman-like techniques for computing input-output weightdistribution of convolutional encoders, in Proc. of IEEE International Symposium onInformation Theory , pp. 1110-114, Austin, TX, USA, Jun. 2010.

[C1] F. Fagnani, C. Ravazzi, Spectra and minimum distances of Repeat Multiple Accumu-late codes, in Proc. of Information Theory and Applications Workshop (invited) paper,pp. 77-86, La Jolla, San Diego, CA, USA, Jan. 2008.

All scientific publications are available on-line at: http://calvino.polito.it/∼ravazzi

Demo[D1] A. Bay, P. Fragneto, M. Grella, S. M. Fosson, C. Ravazzi, E. Magli, Sparsity based indoor

localization in wireless sensor networks, IEEE International Workshop on Multimedia Signal Processing , Pula, Sardegna (Italy), 30 Sep.-2 Oct. 2013

Other[O1] C. Ravazzi, Analisi asintotica di codici di tipo turbo: spettri medi e distanze minime,

La matematica nella societá e nella cultura, Rivista dell’Unione Matematica Italiana , SerieI, Vol.V, N.1, pp. 87-90, Aprile 2012

Seminars, talks, poster presentationsJul. 2015 Quadratically Fast IRLS for sparse signal recovery, SPARS 2015 Signal Processing with

Adaptive Sparse Structured Representations, Cambridge, UK, 6-9 July. 2015

Apr. 2015 Fast and robust EM-based IRLS algorithm for sparse signal recovery from noisy measure-ments, IEEE International Conference on Acoustics, Speech, and Signal Processing, Bris-bane, Australia

Jan. 2015 Fast IRLS for sparse reconstruction based on gaussian mixtures, International Biomedicaland Astronomical Signal Processing (BASP) Frontiers workshop, Villars-sur-Ollon, Switzer-

landMay 2014 Gaussian scale mixtures based IRLS: a quadratic rate for sparse signal recovery, Linneaus

Center for Control of Complex Engineering Systems (LCCC), Lund, Sweden, (invited).

May 2014 Energy-saving gossip algorithm for compressed sensing in multi-agent systems, IEEE Inter-national Conference on Acoustics, Speech, and Signal Processing, Florence, Italy

Dec. 2013 Distributed soft thresholding for sparse recovery, IEEE Global Communications Conference,Atlanta

June 2013 Distributed soft thresholding for sparse recovery, GTTI, Universitá di Ancona, Italy

Feb. 2012 Input driven consensus algorithm for hybrid ML-MAP estimation in sensor networks, Algo-rithms and dynamics over networks Workshop , DIMAT, Politecnico di Torino, Italy (invited)

May 2011 Input driven consensus algorithm for distributed estimation and classification in sensor

networks , Università degli studi di Padova, Italy (invited)May 2011 Asymptotic analysis of turbo-like codes: average spectra and minimum distances , Università

degli studi di Trento, Italy (invited)

Mar. 2011 Asymptotic analysis of turbo-like codes: average spectra and minimum distances , Thesisdefence, Politecnico di Torino

Sep. 2010 Minimum distance properties of multiple-serially concatenated codes, International sympo-sium on turbo codes & iterative information processing , Brest, France

Jul. 2010 Matrix completion via regular sampling, Algorithms and dynamics over networks Workshop ,DIMAT, Politecnico di Torino, Italy (invited)

Jun. 2010 Hayman-like techniques for computing input-output weight distribution of convolutionalencoders, IEEE International Symposium on Information Theory , Austin, TX, USA.

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Mar. 2009 Pseudocodewords of regular LDPC: a tiny tutorial, some results and ideas for further analy-sis, CMP: Center for multidisciplinary research on optimisation and inference , Torino, Italy(invited)

Research projects

2012 - 2016 CRISP - Towards Compressive Information Processing Systems funded by the EuropeanUnion as ERC starting grant, coordinator Prof. Enrico Magli of Politecnico di Torino

2010 - 2012 ’Dynamical systems over large scale graphs’ funded by Italian Ministry of University andResearch Grant, coordinator Prof. Giuseppe Calafiore of Politecnico di Torino

Workshops, conferences and schools6-9 Jul. 2015 Signal Processing with Adaptive Sparse Structured Representations (SPARS) , Cambridge,

UK

19-24 April 2015 IEEE International Conference on Acoustics, Speech, and Signal Processing , Brisbane,Australia

25-29 May 2015 International Biomedical and Astronomical Signal Processing (BASP) Frontiers workshop ,

Villars-sur-Ollon, Switzerland

5-9 May 2014 IEEE International Conference on Acoustics, Speech, and Signal Processing , Florence, Italy

9-13 Dec. 2013 IEEE Global Communications Conference , Atlanta, USA

15-16 Oct. 2012 Two-day workshop on ”Sparse Models and Machine Learning” , Rennes, France

May 2012 Course Numerical methods for sparse recovery , Universita’ degli Studi di Milano, Italy

12-13 May 2011 Workshop Mean field games and related topics , Dipartimento di Matematica, SapienzaUniversità di Roma

6-10 Sep. 2010 International symposium on turbo codes & iterative information processing, Brest, France

14-15 July 2010 Workshop Algorithms and dynamics over networks , Dipartimento di Matematica, Politec-nico di Torino

13-18 Jun. 2010 IEEE International Symposium on Information Theory, Austin, TX, USA22-26 Jun. 2009 CIME/NEWCOM++ course Mathematical Foundation of Complex Networked Information

Systems , Verres, Aosta

19-24 Apr. 2009 Riemann International School Advances in number theory and geometry , Verbania

30 Mar. - 1 Apr. 2009 NEWCOM ++ - ACoRN Joint Workshop , Barcelona, Spain

9-15 Feb. 2009 Information theory and applications (ITA) workshop , UCSD, San Diego, CA, USA

30 Jun. - 3 Jul. 2008 Summer research institute , EPFL, Losanne, Switzerland

Teaching activityFall 2015 Teaching assistant, Analisi matematica I (Mathematical Analysis) , undergraduate course,

Politecnico di Torino, taught by Prof. Luciano Pandolfi

Fall 2014 Teaching assistant, Analisi matematica I (Mathematical Analysis) , undergraduate course,Politecnico di Torino, taught by Prof. Luciano Pandolfi

Fall 2013 Teaching assistant, Analisi matematica I (Mathematical Analysis) , undergraduate course,Politecnico di Torino, taught by Prof. Fabio Fagnani


Sep. 2012 Teacher, Bridging course in mathematics , Politecnico di Torino.

Spring 2012 Teacher (with F. Fagnani and A. Bacciotti) Information theory and control methodologies ,Master Universitario in Matematica industriale, Politecnico di Torino,

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Spring 2011 Teacher, Corso di recupero di analisi matematica (Remedial course in mathematics) , Po-litecnico di Torino.

Fall 2010 Teaching assistant, Teoria dell’informazione e dei codici (Information theory and coding theory) , graduate course, Politecnico di Torino, taught by Prof. Sergio Benedetto andProf. Fabio Fagnani



Fall 2009 Teaching assistant, Analisi matematica I (Mathematical Analysis) , undergraduate course,Politecnico di Torino, taught by Prof. Valentina Casarino

Sep. 2009 Teacher, Bridging course in mathematics (recorded and broadcasted version), Politecnicodi Torino.

Fall 2008 Teaching assistant, Teoria dei codici (Coding theory) , graduate course, Politecnico di

Torino, taught by Prof. Fabio FagnaniFall 2008 Teaching assistant, Analisi matematica I (Mathematical Analysis) , undergraduate course,

Politecnico di Torino, taught by Prof. Valentina Casarino

Fall 2007 Teaching assistant, Analisi matematica I (Mathematical Analysis) , undergraduate course,Politecnico di Torino, taught by Prof. Valentina Casarino

Professional Activities2010 - 2016 Registered in Albo degli studiosi e degli esperti esterni al Politecnico di Torino qualificati

allo svolgimento di attività di tutorato

2010 - 2016 Registered in Albo degli studiosi e degli esperti esterni al Politecnico di Torino qualificati allo svolgimento di corsi di accompagnamento e di attività di tutoraggio in matematica per

le Facoltà di Ingegneria cofinanziati dal Fondo Sociale Europeo 2008 - 2015 Reviewer for IEEE Transactions on Information Theory, IEEE Transactions on Signal Pro-

cessing, IEEE Transactions on Automatic Control, IEEE Transactions on Control of networksystems, IEEE Transactions on Communications, SIAM journal on Control and Optimiza-tion, European Journal of Control, IEEE International Symposium on Information Theory,IEEE International Symposium on turbo codes & iterative information processing, IEEEInternational Conference on Acoustics, Speech, and Signal Processing.

Mar. - May 2007 Internship at Istituto Superiore Mario Boella , Torino.

9-11 May 2008 Mathematics popularizing festival, Tr3XTr3 Three days Mathematics , Suvereto, Livorno

SkillsSoftware Programming Experience in C , MATLAB , Mathematica and R

• Implemented various decoders and encoders in C for channel coding applications.

• Implemented Linear programming decoders in MATLAB for compressive sensing.

• Implemented SDP decoders in MATLAB for matrix completion problem.

Languages Italian: native

English: intermediate level (Cambridge English Certificate)

German: basic level (Goethe-Zertifikat Deutsch)

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Scholarships, grants, and awardsJun. 2013 Best Paper Award Francesco Carassa awarded by GTTI (Gruppo Italiano Telecomuni-

cazioni e Teoria dell’Informazione) for the paper ’Distributed soft thresholding for sparsesignal recovery’

Jun. 2010 IEEE-Travel grant for International Symposium on Information Theory 2010

Feb. 2010 Grant by Istituto Nazionale di Alta Matematica Francesco Severi (GNAMPA)Apr. 2009 Participation grant by Fondazione Banca di Intra for Advances in number theory and

Geometry (Verbania)

Jan. 2008 - present PhD Fellowship in Applied Mathematics, awarded by Politecnico di Torino .

May 2008 Premio Enrico D’Ovidio to the best graduated student 2007 in Mathematical Engineering,Politecnico di Torino

Sep. 2001 - Oct. 2002 Telecom Italia scholarship .

Ai sensi dell’art. 47 del DPR 445 del 28.12.2000 dichiaro, sotto la mia responsabilità, che tutte le informazionicontenute nel presente curriculum corrispondono al vero.

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cv chiara ra vazzi

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