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arXiv 2103.03507math.OCcs.SYeess.SY
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有向网络上问题数据可分离的线性方程求解

Solving Linear Equations with Separable Problem Data over Directed Networks

Priyank Srivastava, Jorge Cortes

摘要:

本文讨论线性代数方程,其中,通过对个体个体的系数矩阵和常数向量求和,分别给出了整体系数矩阵和常数向量。我们的方法是基于重新制定的原始问题作为一个无约束优化。基于这个确切的重新制定,我们首先提供了一个基于梯度的,集中式算法,作为分布式算法的后续设计的参考。我们提出了两套指数稳定的连续时间分布式算法,不需要个别代理矩阵是可逆的,并基于估计非分布项的集中式算法,使用动态平均共识。第一个算法适用于时变权重平衡的有向网络,第二个算法适用于通信图可能不平衡的一般有向网络。数值模拟说明了我们的结果。

英文摘要:

This paper deals with linear algebraic equations where the global coefficient matrix and constant vector are given respectively, by the summation of the coefficient matrices and constant vectors of the individual agents. Our approach is based on reformulating the original problem as an unconstrained optimization. Based on this exact reformulation, we first provide a gradient-based, centralized algorithm which serves as a reference for the ensuing design of distributed algorithms. We propose two sets of exponentially stable continuous-time distributed algorithms that do not require the individual agent matrices to be invertible, and are based on estimating non-distributed terms in the centralized algorithm using dynamic average consensus. The first algorithm works for time-varying weight-balanced directed networks, and the second algorithm works for general directed networks for which the communication graphs might not be balanced. Numerical simulations illustrate our results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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