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SUMMARY:talk of Professor Amir Beck (University of Tel Aviv)
DTSTART:20200226T111500
DTSTAMP:20260916T202707Z
UID:56bbf3bcbf8f028a8f0ad9e0ba6db7e612dc030cd42eef638433f627
CATEGORIES:Conferences - Seminars
DESCRIPTION:Professor Amir Beck (University of Tel Aviv)\nTitle: Sparse Re
 gularization via Bidualization\n\nAbstract The paper considers the sparse 
 envelope function\, defined as the biconjugate of the sum of a squared l_2
 -norm function and the indicator of the set of k-sparse vectors. It is sho
 wn that both function  and proximal values of the sparse envelope functio
 n can be reduced into a one-dimensional search that can be efficiently per
 formed in linear time complexity in expectation. For inverse problems\, th
 e sparse envelope function naturally serves as a regularizer that can hand
 le both sparsity and grouping information on the vector to be estimated\, 
 and the paper is concluded with a numerical example illustrating the poten
 tial effectiveness of the approach. \n\nBio: Amir Beck is a Professor in 
 the School of Mathematical Sciences at Tel-Aviv University. He has publish
 ed numerous papers\, has given invited lectures at international conferenc
 es\, and was awarded the Salomon Simon Mani Award for Excellence in Teachi
 ng and the Henry Taub Research Prize. His research interests are in contin
 uous optimization\, including theory\, algorithmic analysis\, and applicat
 ions. He is an associate editor of Mathematics of Operations Research\, Ma
 thematical Programming Series A\, Mathematical Programming Series B\, the 
 Journal of Optimization Theory and Applications and was an area editor for
  optimization in Operations Research. His research has been supported by v
 arious funding agencies\, including the Israel Science Foundation\, the Ge
 rman-Israeli Foundation\, the Binational US-Israel foundation\, the Israel
 i Science and Energy Ministries and the European community.
LOCATION:INM 10 https://plan.epfl.ch/?room==INM%2010
STATUS:CONFIRMED
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