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Communication overhead is the key challenge for distributed training. Gradient compression is a widely used approach to reduce communication traffic. When combining with parallel communication mechanism method like pipeline, gradient…

机器学习 · 计算机科学 2021-09-08 Enda Yu , Dezun Dong , Yemao Xu , Shuo Ouyang , Xiangke Liao

Nowadays, large and complex deep learning (DL) models are increasingly trained in a distributed manner across multiple worker machines, in which extensive communications between workers pose serious scaling problems. In this article, we…

分布式、并行与集群计算 · 计算机科学 2020-11-10 Shaohuai Shi , Zhenheng Tang , Xiaowen Chu , Chengjian Liu , Wei Wang , Bo Li

We develop a framework to quantify systemic risk measures in a class of Wide-Area-Control (WAC) laws in power networks in the presence of noisy and time-delayed sensory data. A closed-form calculation of the risk of phase incoherence in…

系统与控制 · 电气工程与系统科学 2021-12-30 Christoforos Somarakis , Guangyi Liu , Nader Motee

Gene expression time delays, modelling the complex biological processes of gene transcription and translation, have been shown to play an important role in cellular dynamics. Time delays, motivated by the gene expression process, can also…

细胞行为 · 定量生物学 2022-02-24 Alec Sargood

Future automation and control units for advanced driver assistance systems (ADAS) will exchange sensor and kinematic data with nearby vehicles using wireless communication links to improve traffic safety. In this paper we present an…

信号处理 · 电气工程与系统科学 2023-08-09 Anja Dakić , Markus Hofer , Benjamin Rainer , Stefan Zelenbaba , Laura Bernadó , Thomas Zemen

Connectivity maintenance is crucial for the real world deployment of multi-robot systems, as it ultimately allows the robots to communicate, coordinate and perform tasks in a collaborative way. A connectivity maintenance controller must…

机器人学 · 计算机科学 2021-03-24 Beatrice Capelli , Hassan Fouad , Giovanni Beltrame , Lorenzo Sabattini

With the large-scale integration of renewable power generation, frequency regulation resources (FRRs) are required to have larger capacities and faster ramp rates, which increases the cost of the frequency regulation ancillary service.…

系统与控制 · 电气工程与系统科学 2021-01-27 Likai Liu , Zechun Hu , Xiaoyu Duan , Nikhil Pathak

Large-scale machine learning training, in particular distributed stochastic gradient descent, needs to be robust to inherent system variability such as node straggling and random communication delays. This work considers a distributed…

机器学习 · 计算机科学 2019-03-08 Jianyu Wang , Gauri Joshi

The increase in renewable energy sources (RES) has reduced power system inertia, making frequency stabilization more challenging and highlighting the need for fast frequency response (FFR) resources. While building energy management systems…

系统与控制 · 电气工程与系统科学 2025-03-10 Joonsung Jung , Hyunjoong Kim , Hyunghwan Shin , Jip Kim

In this article, we consider a cooperative control problem involving a heterogeneous network of dynamically decoupled continuous-time linear plants. The (output-feedback) controllers for each plant may communicate with each other according…

最优化与控制 · 数学 2024-01-09 Mruganka Kashyap , Laurent Lessard

Quantifying the average communication rate (ACR) of a networked event-triggered stochastic control system (NET-SCS) with deterministic thresholds is challenging due to the non-stationary nature of the system's stochastic processes. For a…

信号处理 · 电气工程与系统科学 2024-04-15 Zengjie Zhang , Qingchen Liu , Mohammad H. Mamduhi , Sandra Hirche

The time needed to exchange information in the physical world induces a delay term when the respective system is modeled by differential equations. Time delays are hence ubiquitous, being furthermore likely to induce instabilities and with…

混沌动力学 · 物理学 2019-10-31 Hendrik Wernecke , Bulcsú Sándor , Claudius Gros

Demand response represents a significant but largely untapped resource that can greatly enhance the flexibility and reliability of power systems. This paper proposes a hierarchical control framework to facilitate the integrated coordination…

最优化与控制 · 数学 2017-01-10 Di Wu , Jianming Lian , Yannan Sun , Tao Yang , Jacob Hansen

This paper studies the behavior of a strategic aggregator offering regulation capacity on behalf of a group of distributed energy resources (DERs, e.g. plug-in electric vehicles) in a power market. Our objective is to maximize the…

最优化与控制 · 数学 2017-08-18 Hongcai Zhang , Zechun Hu , Eric Munsing , Scott J. Moura , Yonghua Song

Time delays may cause dramatic changes to the dynamics of interacting oscillators. Coupled networks of interacting dynamical systems can behave unexpectedly when the signal between the vertices are time delayed. It has been shown for a very…

混沌动力学 · 物理学 2018-06-19 Alexandre Wagemakers , Miguel A. F. Sanjuán

While highly directional communications may offer considerable improvements in the link data rate and over-the-air latency of high-end wearable devices, the system-level capacity trade-offs call for separate studies with respect to the…

网络与互联网体系结构 · 计算机科学 2021-04-13 Asad Ali , Olga Galinina , Sergey Andreev

A challenge in transmission-distribution coordination is how to quickly and reliably coordinate Distributed Energy Resources (DERs) across large multi-stakeholder Distribution Networks (DNs) to support the Transmission Network (TN), while…

系统与控制 · 电气工程与系统科学 2024-01-19 Ilyas Farhat , Etinosa Ekomwenrenren , John W. Simpson-Porco , Evangelos Farantatos , Mahendra Patel , Aboutaleb Haddadi

Decentralized Federated learning is a distributed edge intelligence framework by exchanging parameter updates instead of training data among participators, in order to retrain or fine-tune deep learning models for mobile intelligent…

分布式、并行与集群计算 · 计算机科学 2023-11-03 Yong Zeng , Siyuan Liu , Zhiwei Xu , Jie Tian

We study event-triggered control for stabilization of unstable linear plants over rate-limited communication channels subject to unknown, bounded delay. On one hand, the timing of event triggering carries implicit information about the…

This paper studies the formation stabilization problem of asynchronous nonlinear multi-agent systems (MAS) subject to parametric uncertainties, external disturbances and bounded time-varying communication delays. A self-triggered min-max…

系统与控制 · 电气工程与系统科学 2022-02-22 Henglai Wei , Kunwu Zhang , Yang Shi