Local Algorithms for Sparse Spanning Graphs
Local Algorithms for Sparse Spanning Graphs
复制标题
稀疏生成图的局部算法
DOI:
10.1007/s00453-019-00612-6
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发表时间:
2020
期刊:
影响因子:
1.1
通讯作者:
Rubinfeld, Ronitt
中科院分区:
文献类型:
--
作者:
Levi, Reut;Ron, Dana;Rubinfeld, Ronitt
Constructing a spanning tree of a graph is one of the most basic tasks in graph theory. We consider a relaxed version of this problem in the setting of local algorithms. The relaxation is that the constructed subgraph is asparse spanning subgraphcontaining at mostedges (wherenis the number of vertices andis a given approximation/sparsity parameter). In the local setting, the goal is to quickly determine whether a given edgeebelongs to such a subgraph, without constructing the whole subgraph, but rather by inspecting (querying) the local neighborhood ofe. The challenge is to maintain consistency. That is, to provide answers concerning different edges according to thesamespanning subgraph. We first show that for general bounded-degree graphs, the query complexity of any such algorithm must be. This lower bound holds for constant-degree graphs that have high expansion. Next we design an algorithm for (bounded-degree) graphs with high expansion, obtaining a result that roughly matches the lower bound. We then turn to study graphs that exclude a fixed minor (and are hence non-expanding). We design an algorithm for such graphs, which may have an unbounded maximum degree. The query complexity of this algorithm is(independent ofnand the maximum degree), wherehis the number of vertices in the excluded minor. Though our two algorithms are designed for very different types of graphs (and have very different complexities), on a high-level there are several similarities, and we highlight both the similarities and the differences.
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影响因子:
1
作者:
Levi, Reut;Moshkovitz, Guy;Ron, Dana;Rubinfeld, Ronitt;Shapira, Asaf
通讯作者:
Shapira, Asaf
DOI:
10.1145/1497290.1497298
发表时间:
2009
期刊:
ACM Trans. Algorithms
影响因子:
--
作者:
S. Marko;D. Ron
通讯作者:
D. Ron
DOI:
10.1145/100216.100254
发表时间:
1990
期刊:
J. Parallel Distributed Comput.
影响因子:
--
作者:
N. Alon;P. Seymour;R. Thomas
通讯作者:
R. Thomas
DOI:
10.1007/978-3-642-22935-0_45
发表时间:
2011
期刊:
2019 IEEE 60th Annual Symposium on Foundations of Computer Science (FOCS)
影响因子:
--
作者:
A. Edelman;Avinatan Hassidim;H. N. Nguyen;Krzysztof Onak
通讯作者:
Krzysztof Onak
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
Zvika Brakerski
通讯作者:
Zvika Brakerski