各位老師好：
應影像實驗室邀請，5月6日（周四 ）晚上20:00-21:30，法國國家科學院院長 Patrick Flandrin 教授給bet356手机版唯一官网師生做學術報告，具體情況如下：
報告題目：基于時空正則化的新冠肺炎再生數預測
Estimating Covid-19 reproduction number: A spatio-temporal regularized approach
報告人：Patrick Flandrin，裡昂高等師範學院教授，法國國家科學院院長
主持人:Jean-Louis Coatrieux，bet356手机版唯一官网特聘教授，INSERM主任研究員
報告時間：北京時間5月6日晚上20點-21點30分
報告地點：四牌樓校區中山院111,
參會鍊接：zoom會議ID：941 9817 4855，密碼：114243
https://univ-rennes1-fr.zoom.us/j/94198174855報告摘要：
Among the different indicators that quantify the spread of an epidemic—such as the on-going Covid-19—stands first the reproduction number which measures how many people can be contaminated by an infected person. In order to permit the monitoring of the evolution of this number, a new estimation procedure has been proposed, assuming a well-accepted model for current incidence data, based on past observations. The originality of the proposed approach is twofold: 1) the estimation of the reproduction number is achieved by convex optimization within a proximal-based inverse problem formulation, with constraints aimed at promoting piecewise linearity; 2) the approach is developed in a multivariate setting, allowing for the simultaneous handling of multiple time series attached to different geographical regions, together with a spatial (graph-based) regularization of their evolutions in time. The justification of the proposed methodology will be outlined and examples of its real application to Covid-19 will be discussed, both for metropolitan France and for the world.
報告人簡介：
Patrick Flandrin received the engineer degree from ICPI Lyon, France, in 1978, and the Doct.-Ing. and Docteur d’État degrees from INP Grenoble, France, in 1982 and 1987, respectively. He joined CNRS in 1982, where he is currently Research Director. Since 1991, he has been with the Signals, Systems and Physics Group, within the Physics Department at ENS de Lyon, France. He has been President of GRETSI, the French Association for Signal and Image Processing, from 2009 to 2019. His research interests include mainly nonstationary signal processing (with emphasis on time-frequency and time-scale methods), scaling stochastic processes and complex systems. He authored two monographs in those areas, the most recent one being Explorations in Time-Frequency Analysis (Cambridge University Press, 2018). Dr. Flandrin was awarded the Philip Morris Scientific Prize in Mathematics (1991), the SPIE Wavelet Pioneer Award (2001), the Prix Michel Monpetit from the French Academy of Sciences (2001), the Silver Medal from CNRS (2010), and the Technical Achievement Award from the IEEE Signal Processing Society (2017). Past Distinguished Lecturer of the IEEE Signal Processing Society (2010-2011), he is a Fellow of the IEEE (2002) and of EURASIP (2009). Elected member of the French Academy of Sciences in 2010, he is currently its President for the period 2021-2022.