Partially Optimal Edge Fault-Tolerant Spanners
Partially Optimal Edge Fault-Tolerant Spanners
复制标题
部分最优边缘容错扳手
DOI:
10.1137/1.9781611977073.129
复制
发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Robelle, Caleb
中科院分区:
文献类型:
--
作者:
Bodwin, Greg;Dinitz, Michael;Robelle, Caleb
Recent work has established that, for every positive integerk, everyn-node graph has a (2k–1)-spanner withO(f1–1/kn1+1/k) edges that is resilient tofedge or vertex faults. Forvertexfaults, this bound is tight. However, the case ofedgefaults is not as well understood: the best known lower bound for generalkis . Our main result is to nearly close this gap with an improved upper bound, thus separating the cases of edge and vertex faults. For oddk, our new upper bound is , which is tight up to hidden poly(k) factors. For evenk, our new upper bound isOk(f1/2n1 + 1/k+fn), which leaves a gap of poly(k)f1/(2k). Our proof is an analysis of the fault-tolerant greedy algorithm, which requires exponential time, but we also show that there is a polynomial-time algorithm which creates edge fault tolerant spanners that are larger only by factors ofk.
登录
查看更多内容
DOI:
--
发表时间:
2017
期刊:
ACM-SIAM Symposium on Discrete Algorithms
影响因子:
--
作者:
Gregory Bodwin;M. Dinitz;M. Parter;V. V. Williams
通讯作者:
V. V. Williams
DOI:
--
发表时间:
1990
期刊:
Proceedings [1990] 31st Annual Symposium on Foundations of Computer Science
影响因子:
--
作者:
B. Awerbuch;D. Peleg
通讯作者:
D. Peleg
DOI:
--
发表时间:
2018
期刊:
ACM SIGACT-SIGOPS Symposium on Principles of Distributed Computing
影响因子:
--
作者:
Gregory Bodwin;Shyamal Patel
通讯作者:
Shyamal Patel
DOI:
--
发表时间:
1998
期刊:
Symposium on the Theory of Computing
影响因子:
--
作者:
C. Levcopoulos;G. Narasimhan;M. Smid
通讯作者:
M. Smid
DOI:
10.1137/1.9781611976465.174
发表时间:
2021
期刊:
Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms (SODA
影响因子:
--
作者:
Bodwin, Greg;Dinitz, Michael;Robelle, Caleb
通讯作者:
Robelle, Caleb