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Diffusion-based classifiers such as those relying on the Personalized PageRank and the Heat kernel, enjoy remarkable classification accuracy at modest computational requirements. Their performance however is affected by the extent to which…

Network data have appeared frequently in recent research. For example, in comparing the effects of different types of treatment, network models have been proposed to improve the quality of estimation and hypothesis testing. In this paper,…

统计方法学 · 统计学 2020-09-04 Zhixin Zhou , Ping Li , Feifang Hu

Many biological, ecological and economic systems are best described by weighted networks, as the nodes interact with each other with varying strength. However, most network models studied so far are binary, the link strength being either 0…

无序系统与神经网络 · 物理学 2009-11-07 S. H. Yook , H. Jeong , A. -L. Barabasi , Y. Tu

Distributed multi-task adaptive strategies are useful to estimate multiple parameter vectors simultaneously in a collaborative manner. The existed distributed multi-task strategies use diffusion mode of cooperation in which during…

系统与控制 · 计算机科学 2015-10-01 Vinay Chakravarthi Gogineni , Mrityunjoy Chakraborty

Predicting the behavior of a wireless link in terms of, e.g., the frame delivery ratio, is a critical task for optimizing the performance of wireless industrial communication systems. This is because industrial applications are typically…

网络与互联网体系结构 · 计算机科学 2024-11-19 Gabriele Formis , Stefano Scanzio , Lukasz Wisniewski , Gianluca Cena

A distributed adaptive algorithm is proposed to solve a node-specific parameter estimation problem where nodes are interested in estimating parameters of local interest and parameters of global interest to the whole network. To address the…

系统与控制 · 计算机科学 2014-07-02 Nikola Bogdanović , Jorge Plata-Chaves , Kostas Berberidis

The paper considers the problem of distributed adaptive linear parameter estimation in multi-agent inference networks. Local sensing model information is only partially available at the agents and inter-agent communication is assumed to be…

最优化与控制 · 数学 2012-08-07 Soummya Kar , Jose' M. F. Moura , H. Vincent Poor

This paper is concerned with the study of synchronization and consensus phenomena in complex networks of diffusively-coupled nodes subject to external disturbances. Specifically, we make use of stochastic Lyapunov functions to provide…

系统与控制 · 计算机科学 2016-03-22 Giovanni Russo , Rovert Shorten

In this work, we propose adaptive link selection strategies for distributed estimation in diffusion-type wireless networks. We develop an exhaustive search-based link selection algorithm and a sparsity-inspired link selection algorithm that…

信息论 · 计算机科学 2014-01-17 Songcen Xu , Rodrigo C. de Lamare , H. Vincent Poor

This work develops a robust diffusion recursive least squares algorithm to mitigate the performance degradation often experienced in networks of agents in the presence of impulsive noise. This algorithm minimizes an exponentially weighted…

信息论 · 计算机科学 2019-02-20 Y. Yu , R. C. de Lamare , Y. Zakharov

This paper studies how communication across experts prior to aggregation by a decision-maker affects the efficiency of forecast combination. When experts exchange information before reporting their forecasts, their signals become correlated…

理论经济学 · 经济学 2026-04-29 Marcos R. Fernandes

In this work, we examine a network of agents operating asynchronously, aiming to discover an ideal global model that suits individual local datasets. Our assumption is that each agent independently chooses when to participate throughout the…

机器学习 · 计算机科学 2024-02-09 Elsa Rizk , Kun Yuan , Ali H. Sayed

This work studies the problem of inferring whether an agent is directly influenced by another agent over an adaptive diffusion network. Agent i influences agent j if they are connected (according to the network topology), and if agent j…

多智能体系统 · 计算机科学 2017-07-21 Vincenzo Matta , Ali H. Sayed

Distributed consensus has been widely studied for sensor network applications. Whereas the asymptotic convergence rate has been extensively explored in prior work, other important and practical issues, including energy efficiency and link…

网络与互联网体系结构 · 计算机科学 2013-04-10 Lei Chen , Jeff Frolik

We consider a distributed estimation method in a setting with heterogeneous streams of correlated data distributed across nodes in a network. In the considered approach, linear models are estimated locally (i.e., with only local data)…

机器学习 · 计算机科学 2021-02-11 Lingzhou Hong , Alfredo Garcia , Ceyhun Eksin

We study diffusion and consensus dynamics in a Network of Networks model. In this model, there is a collection of sub-networks, connected to one another using a small number of links. We consider a setting where the links between networks…

社会与信息网络 · 计算机科学 2020-02-17 Yuhao Yi , Anirban Das , Stacy Patterson , Bassam Bamieh , Zhongzhi Zhang

This paper considers the distributed consensus problems for multi-agent systems with general linear and Lipschitz nonlinear dynamics. Distributed relative-state consensus protocols with an adaptive law for adjusting the coupling weights…

系统与控制 · 计算机科学 2015-01-20 Zhongkui Li , Wei Ren , Xiangdong Liu , Mengyin Fu

So far, many network-structure-based link prediction methods have been proposed. However, these methods only highlight one or two structural features of networks, and then use the methods to predict missing links in different networks. The…

物理与社会 · 物理学 2017-09-01 Chuang Ma , Zhong-Kui Bao , Hai-Feng Zhang

We consider the distributed weight balancing problem in networks of nodes that are interconnected via directed edges, each of which is able to admit a positive integer weight within a certain interval, captured by individual lower and upper…

系统与控制 · 电气工程与系统科学 2019-07-10 Apostolos I. Rikos , Christoforos N. Hadjicostis

Network structure plays a critical role in functionality and performance of network systems. This paper examines structural adaptivity of diffusively coupled, directed multi-agent networks that are subject to diffusion performance. Inspired…

系统与控制 · 电气工程与系统科学 2022-08-30 Lulu Pan , Haibin Shao , Mehran Mesbahi , Dewei Li , Yugeng Xi