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  4. Adaptive Social Learning for Tracking Rare Transition Markov Chains
 
conference paper

Adaptive Social Learning for Tracking Rare Transition Markov Chains

Khammassi, Malek  
•
Bordignon, Virginia  
•
Matta, Vincenzo
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2024
European Signal Processing Conference
32 European Signal Processing Conference

Adaptive Social Learning (ASL) enables consistent truth learning in nonstationary environments. In this framework, agents linked by a graph, exchange their local beliefs with neighbors to track some underlying state of interest. This state can drift over time. Previous works have examined the adaptation and learning properties of ASL without relating them to the speed of the drifts. This study assesses the performance of ASL by modeling the true state as a Markov chain. We determine an asymptotic characterization of the ASL tracking performance, revealing the fundamental scaling laws that rule the rare transition regime. We demonstrate that ASL achieves a vanishing probability of error when the average drift time of the Markov chain is smaller than the adaptation time of the ASL algorithm. Simulations illustrate our theoretical findings, providing insights into the ASL performance in dynamic settings.

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Type
conference paper
DOI
10.23919/eusipco63174.2024.10715423
Scopus ID

2-s2.0-85208427020

Author(s)
Khammassi, Malek  

École Polytechnique Fédérale de Lausanne

Bordignon, Virginia  

École Polytechnique Fédérale de Lausanne

Matta, Vincenzo

Università degli Studi di Salerno

Sayed, Ali H.  

École Polytechnique Fédérale de Lausanne

Date Issued

2024

Publisher

European Signal Processing Conference, EUSIPCO

Published in
European Signal Processing Conference
ISBN of the book

9789464593617

Start page

1032

End page

1036

Subjects

Adaptive social learning

•

hidden Markov model

•

large deviations

•

Markov chain

•

opinion formation

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
ASL  
Event nameEvent acronymEvent placeEvent date
32 European Signal Processing Conference

Lyon, France

2024-08-26 - 2024-08-30

Available on Infoscience
January 26, 2025
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/244992
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