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Distributed Observers With Time-Varying Delays [PDF]

open access: yesIEEE Transactions on Automatic Control, 2021
The distributed estimation problem is solved for continuous-time observer nodes that obtain real-time measurements but communicate with their neighbors over a communication network. To this end, the digital communication between the observer nodes is modeled by the time-delay approach where variable sampling intervals, transmission delays and packet ...
Haik Silm   +5 more
openaire   +1 more source

Delay-Agnostic Asynchronous Distributed Optimization

open access: yes2023 62nd IEEE Conference on Decision and Control (CDC), 2023
Existing asynchronous distributed optimization algorithms often use diminishing step-sizes that cause slow practical convergence, or fixed step-sizes that depend on an assumed upper bound of delays. Not only is such a delay bound hard to obtain in advance, but it is also large and therefore results in unnecessarily slow convergence. This paper develops
Wu, Xuyang   +3 more
openaire   +2 more sources

Delay-Tolerant Distributed Inference in Tracking Networks

open access: yesSensors, 2021
This paper discusses asynchronous distributed inference in object tracking. Unlike many studies, which assume that the delay in communication between partial estimators and the central station is negligible, our study focuses on the problem of ...
Mohammadreza Alimadadi   +2 more
doaj   +1 more source

Distributed delayed stochastic optimization [PDF]

open access: yes2012 IEEE 51st IEEE Conference on Decision and Control (CDC), 2012
We analyze the convergence of gradient-based optimization algorithms that base their updates on delayed stochastic gradient information. The main application of our results is to the development of gradient-based distributed optimization algorithms where a master node performs parameter updates while worker nodes compute stochastic gradients based on ...
Agarwal, Alekh, Duchi, John C.
openaire   +2 more sources

Distributed Stochastic Optimization with Large Delays [PDF]

open access: yesMathematics of Operations Research, 2022
The recent surge of breakthroughs in machine learning and artificial intelligence has sparked renewed interest in large-scale stochastic optimization problems that are universally considered hard. One of the most widely used methods for solving such problems is distributed asynchronous stochastic gradient descent (DASGD), a family of algorithms that ...
Zhengyuan Zhou   +4 more
openaire   +3 more sources

Existence of Absolutely Continuous Fundamental Matrix of Linear Fractional System with Distributed Delays

open access: yesMathematics, 2021
The goal of the present paper is to obtain sufficient conditions that guaranty the existence and uniqueness of an absolutely continuous fundamental matrix for a retarded linear fractional differential system with Caputo type derivatives and distributed ...
Hristo Kiskinov   +3 more
doaj   +1 more source

Theoretical Delay Time Distributions [PDF]

open access: yesProceedings of the International Astronomical Union, 2011
AbstractWe briefly discuss the method of population synthesis to calculate theoretical delay time distributions of Type Ia supernova progenitors. We also compare the results of different research groups and conclude that, although one of the main differences in the results for single degenerate progenitors is the retention efficiency with which ...
Nelemans, G.A.   +4 more
openaire   +5 more sources

Synchronization of Discrete-Time Complex Networks with Randomly Occurring Coupling and Distributed Time-Varying Delay

open access: yesAdvances in Difference Equations, 2010
The synchronization problem of new discrete-time complex networks with randomly occurring coupling and distributed time-varying delay is investigated. Compared with the previous work, the distributed delay is assumed to be timevarying.
Jian-an Fang, Yang Tang
doaj   +2 more sources

On the Stability of Solutions of Neutral Differential Equations with Distributed Delay [PDF]

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2018
We consider one class of systems of linear nonautonomous differential equations of neutral type with distributed delay. The matrix in front of the derivative of the unknown vector-function with delay is constant, the matrix in front of the unknown vector-
T. K. Yskak
doaj   +1 more source

Synchronization in Finite-Time Analysis of Clifford-Valued Neural Networks with Finite-Time Distributed Delays

open access: yesMathematics, 2021
In this paper, we explore the finite-time synchronization of Clifford-valued neural networks with finite-time distributed delays. To address the problem associated with non-commutativity pertaining to the multiplication of Clifford numbers, the original ...
Grienggrai Rajchakit   +4 more
doaj   +1 more source

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