Title
Multitask diffusion adaptation over asynchronous networks.
Abstract
The multitask diffusion LMS is an efficient strategy to simultaneously infer, in a collaborative manner, multiple parameter vectors. Existing works on multitask problems assume that all agents respond to data synchronously. In several applications, agents may not be able to act synchronously because networks can be subject to several sources of uncertainties such as changing topology, random link failures, or agents turning on and off for energy conservation. In this paper, we describe a model for the solution of multitask problems over asynchronous networks and carry out a detailed mean and mean-square error analysis. Results show that sufficiently small step-sizes can still ensure both stability and performance. Simulations and illustrative examples are provided to verify the theoretical findings.
Year
DOI
Venue
2014
10.1109/TSP.2016.2518991
IEEE Trans. Signal Processing
Keywords
Field
DocType
Correlation,Optimization,Estimation,Context,Network topology,Topology,Mean square error methods
Asynchronous communication,Mathematical optimization,Energy conservation,Computer science,Diffusion adaptation
Journal
Volume
Issue
ISSN
abs/1412.1798
11
1053-587X
Citations 
PageRank 
References 
4
0.39
0
Authors
4
Name
Order
Citations
PageRank
Roula Nassif1576.89
C. Richard2483.47
André Ferrari3322.79
Ali H. Sayed4373.27