The Distributed Complexity of Locally Checkable Problems on Paths is Decidable
The Distributed Complexity of Locally Checkable Problems on Paths is Decidable
复制标题
路径上局部可检查问题的分布式复杂度是可判定的
DOI:
10.1145/3293611.3331606
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Suomela, Jukka
中科院分区:
文献类型:
--
作者:
Balliu, Alkida;Brandt, Sebastian;Chang, Yi-Jun;Olivetti, Dennis;Rabie, Mikaël;Suomela, Jukka
Consider a computer network that consists of a path with n nodes. The nodes are labeled with inputs from a constant-sized set, and the task is to find output labels from a constant-sized set subject to some local constraints---more formally, we have an LCL (locally checkable labeling) problem. How many communication rounds are needed (in the standard LOCAL model of computing) to solve this problem?It is well known that the answer is always either O(1) rounds, or Θ(log⋅n) rounds, or Θ(n) rounds. In this work we show that this question is decidable (albeit PSPACE-hard): we present an algorithm that, given any LCL problem defined on a path, outputs the distributed computational complexity of this problem and the corresponding asymptotically optimal algorithm.
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DOI:
--
发表时间:
2017
期刊:
ACM SIGACT-SIGOPS Symposium on Principles of Distributed Computing
影响因子:
--
作者:
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