Streaming Algorithms for Estimating the Matching Size in Planar Graphs and Beyond
Streaming Algorithms for Estimating the Matching Size in Planar Graphs and Beyond
复制标题
用于估计平面图及其他区域中的匹配大小的流算法
DOI:
10.1145/3230819
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Krzysztof Onak
中科院分区:
文献类型:
--
作者:
Hossein Esfandiari;Mohammad Taghi Hajiaghayi;Vahid Liaghat;Morteza Monemizadeh;Krzysztof Onak
We consider the problem of estimating the size of a maximum matching when the edges are revealed in a streaming fashion. When the input graph is planar, we present a simple and elegant streaming algorithm that, with high probability, estimates the size of a maximum matching within a constant factor using Õ(n2/3) space, wherenis the number of vertices. The approach generalizes to the family of graphs that have bounded arboricity, which include graphs with an excluded constant-size minor. To the best of our knowledge, this is the first result for estimating the size of a maximum matching in theadversarial-orderstreaming model (as opposed to the random-order streaming model) ino(n) space. We circumvent the barriers inherent in the adversarial-order model by exploiting several structural properties of planar graphs, and more generally, graphs with bounded arboricity. We further reduce the required memory size to Õ(√n) for three restricted settings: (i) when the input graph is a forest; (ii) when we have 2-passes and the input graph has bounded arboricity; and (iii) when the edges arrive in random order and the input graph has bounded arboricity.Finally, we design a reduction from the Boolean Hidden Matching Problem to show that there is no randomized streaming algorithm that estimates the size of the maximum matching to within a factor better than 3/2 and uses onlyo(n1/2) bits of space. Using the same reduction, we show that there is no deterministic algorithm that computes this kind of estimate ino(n) bits of space. The lower bounds hold even for graphs that are collections of paths of constant length.
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DOI:
10.1007/3-540-57899-4_44
发表时间:
1993
期刊:
ArXiv
影响因子:
--
作者:
Z. Ivkovic;E. Lloyd
通讯作者:
E. Lloyd
DOI:
10.1145/1806689.1806753
发表时间:
2010
期刊:
Random Struct. Algorithms
影响因子:
--
作者:
Krzysztof Onak;R. Rubinfeld
通讯作者:
R. Rubinfeld
影响因子:
4.4
作者:
Ofer Neiman;Shay Solomon
通讯作者:
Shay Solomon
DOI:
--
发表时间:
2011
期刊:
IEEE Annual Symposium on Foundations of Computer Science
影响因子:
--
作者:
Surender Baswana;Manoj Gupta;Sandeep Sen
通讯作者:
Sandeep Sen
DOI:
10.1007/978-0-387-39940-9_184
发表时间:
2009
期刊:
Proceedings of the twenty-seventh ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
影响因子:
--
作者:
A. Mcgregor
通讯作者:
A. Mcgregor