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Ali H. Sayed
Researcher at École Polytechnique Fédérale de Lausanne
Publications - 766
Citations - 39568
Ali H. Sayed is an academic researcher from École Polytechnique Fédérale de Lausanne. The author has contributed to research in topics: Adaptive filter & Optimization problem. The author has an hindex of 81, co-authored 728 publications receiving 36030 citations. Previous affiliations of Ali H. Sayed include Harbin Engineering University & University of California, Los Angeles.
Papers
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Posted Content
Exact Diffusion for Distributed Optimization and Learning --- Part I: Algorithm Development
TL;DR: The exact diffusion method is applicable to locally balanced left-stochastic combination matrices which, compared to the conventional doubly stochastic matrix, are more general and able to endow the algorithm with faster convergence rates, more flexible step-size choices, and improved privacy-preserving properties.
Journal ArticleDOI
Combinations of Adaptive Filters: Performance and convergence properties
Jeronimo Arenas-Garcia,Luis A. Azpicueta-Ruiz,Magno T. M. Silva,Vitor H. Nascimento,Ali H. Sayed +4 more
TL;DR: Adaptive filters are at the core of many signal processing applications, ranging from acoustic noise supression to echo cancelation to array beamforming.
Journal ArticleDOI
Exact Diffusion for Distributed Optimization and Learning—Part I: Algorithm Development
TL;DR: In this paper, a distributed optimization strategy with guaranteed exact convergence for a broad class of left-stochastic combination policies was developed, which is applicable to locally balanced combination matrices which are more general and able to endow the algorithm with faster convergence rates, more flexible step-size choices, and improved privacy-preserving properties.
Proceedings ArticleDOI
Diffusion Least-Mean Squares Over Adaptive Networks
Cassio G. Lopes,Ali H. Sayed +1 more
TL;DR: The resulting adaptive networks are robust to node and link failures and present a substantial improvement over the non-cooperative case asserting that cooperation improves estimation performance.
Distributed processing over adaptive networks
Cassio G. Lopes,Ali H. Sayed +1 more
TL;DR: An overview of recent work on distributed adaptive algorithms focuses mainly on incremental and diffusion strategies and comments on the mean-square-error performance of the incremental solution.