Distributed MST: A Smoothed Analysis
Distributed MST: A Smoothed Analysis
复制标题
分布式 MST:平滑分析
DOI:
10.1145/3369740.3369778
复制
发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Pham, Nguyen Dinh
中科院分区:
文献类型:
--
作者:
Chatterjee, Soumyottam;Pandurangan, Gopal;Pham, Nguyen Dinh
We study smoothed analysis of distributed graph algorithms, focusing on the fundamental minimum spanning tree (MST) problem. With the goal of studying the time complexity of distributed MST as a function of the "perturbation" of the input graph, we posit a smoothing model that is parameterized by a smoothing parameter 0 ≤ ϵ(n) ≤ 1 which controls the amount of random edges that can be added to an input graph G per round. Informally, ϵ(n) is the probability (typically a small function of n, e.g., n--¼) that a random edge can be added to a node per round. The added random edges, once they are added, can be used (only) for communication.We show upper and lower bounds on the time complexity of distributed MST in the above smoothing model. We present a distributed algorithm that, with high probability, 1 computes an MST and runs in Õ(min{1/√ϵ(n)2O(√log n), D+ √n}) rounds2 where ϵ is the smoothing parameter, D is the network diameter and n is the network size.To complement our upper bound, we also show a lower bound of Ω(min{1/√ϵ(n), D + √n}). We note that the upper and lower bounds essentially match except for a multiplicative 2O(√log n) polylog(n) factor.Our work can be considered as a first step in understanding the smoothed complexity of distributed graph algorithms.
登录
查看更多内容
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
M. Parter
通讯作者:
M. Parter
DOI:
--
发表时间:
2018
期刊:
Bull. EATCS
影响因子:
--
作者:
Gopal Pandurangan;Peter Robinson;Michele Scquizzato
通讯作者:
Michele Scquizzato
DOI:
10.1145/3087801.3087827
发表时间:
2017-07
期刊:
Proceedings of the ACM Symposium on Principles of Distributed Computing
影响因子:
--
作者:
M. Ghaffari;F. Kuhn;Hsin-Hao Su
通讯作者:
M. Ghaffari;F. Kuhn;Hsin-Hao Su
DOI:
10.1109/icdcs.2018.00079
发表时间:
2018
期刊:
38th IEEE International Conference on Distributed Computing Systems (ICDCS
影响因子:
--
作者:
Chatterjee, Soumyottam;Fathi, Reza;Pandurangan, Gopal;Pham, Nguyen Dinh
通讯作者:
Pham, Nguyen Dinh
DOI:
--
发表时间:
2018
期刊:
Computer Science Symposium in Russia
影响因子:
--
作者:
Leonid Barenboim;V. Khazanov
通讯作者:
V. Khazanov