Diffusion adaptation strategies for distributed optimization and learning over networks

J Chen, AH Sayed - IEEE Transactions on Signal Processing, 2012 - ieeexplore.ieee.org
We propose an adaptive diffusion mechanism to optimize global cost functions in a
distributed manner over a network of nodes. The cost function is assumed to consist of a …

Adaptive penalty-based distributed stochastic convex optimization

ZJ Towfic, AH Sayed - IEEE Transactions on Signal Processing, 2014 - ieeexplore.ieee.org
In this work, we study the task of distributed optimization over a network of learners in which
each learner possesses a convex cost function, a set of affine equality constraints, and a set …

Diffusion strategies outperform consensus strategies for distributed estimation over adaptive networks

SY Tu, AH Sayed - IEEE Transactions on Signal Processing, 2012 - ieeexplore.ieee.org
Adaptive networks consist of a collection of nodes with adaptation and learning abilities. The
nodes interact with each other on a local level and diffuse information across the network to …

Diffusion adaptive networks with changing topologies

CG Lopes, AH Sayed - 2008 IEEE International Conference on …, 2008 - ieeexplore.ieee.org
Adaptive networks (AN) have been recently proposed to address distributed estimation
problems [1]-[4]. Here we extend prior work to changing topologies and data-normalized …

Adaptive robust distributed learning in diffusion sensor networks

S Chouvardas, K Slavakis… - IEEE Transactions on …, 2011 - ieeexplore.ieee.org
In this paper, the problem of adaptive distributed learning in diffusion networks is
considered. The algorithms are developed within the convex set theoretic framework. More …

Diffusion LMS strategies for distributed estimation

FS Cattivelli, AH Sayed - IEEE transactions on signal …, 2009 - ieeexplore.ieee.org
We consider the problem of distributed estimation, where a set of nodes is required to
collectively estimate some parameter of interest from noisy measurements. The problem is …

Diffusion adaptation over networks under imperfect information exchange and non-stationary data

X Zhao, SY Tu, AH Sayed - IEEE Transactions on Signal …, 2012 - ieeexplore.ieee.org
Adaptive networks rely on in-network and collaborative processing among distributed
agents to deliver enhanced performance in estimation and inference tasks. Information is …

Adaptive distributed estimation based on recursive least-squares and partial diffusion

R Arablouei, K Doğançay, S Werner… - IEEE Transactions on …, 2014 - ieeexplore.ieee.org
Using the diffusion strategies, an unknown parameter vector can be estimated over an
adaptive network by combining the intermediate estimates of neighboring nodes at each …

Diffusion adaptation over networks

AH Sayed - Academic Press Library in Signal Processing, 2014 - Elsevier
Adaptive networks are well-suited to perform decentralized information processing and
optimization tasks and to model various types of self-organized and complex behavior …

Diffusion least-mean squares over adaptive networks: Formulation and performance analysis

CG Lopes, AH Sayed - IEEE Transactions on Signal Processing, 2008 - ieeexplore.ieee.org
We formulate and study distributed estimation algorithms based on diffusion protocols to
implement cooperation among individual adaptive nodes. The individual nodes are …