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arXiv 2109.09663cs.DScs.DC
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稀疏图中大团的并行算法

Parallel Algorithms for Finding Large Cliques in Sparse Graphs

Lukas Gianinazzi, Maciej Besta, Yannick Schaffner, Torsten Hoefler

摘要:

我们提出了一个并行的k-团列表算法与改进的工作范围(相同的深度)在稀疏图与低退化或荫度。我们通过引入和分析一个新的修剪标准回溯搜索实现这一点。我们的算法具有更好的渐近性能,特别是对于较大的集团(当k不是常数),在那里我们避免了直接指数运行时增长的集团大小。特别是,集团是一个常数因子小于图的退化,工作的改善是一个指数因子的集团大小相比,以前的结果。此外,我们提出了一个低深度近似社区退化(可以任意小于退化)。这种近似使得低深度的团列表算法,其运行时由社区退化参数化。

英文摘要:

We present a parallel k-clique listing algorithm with improved work bounds (for the same depth) in sparse graphs with low degeneracy or arboricity. We achieve this by introducing and analyzing a new pruning criterion for a backtracking search. Our algorithm has better asymptotic performance, especially for larger cliques (when k is not constant), where we avoid the straightforwardly exponential runtime growth with respect to the clique size. In particular, for cliques that are a constant factor smaller than the graph's degeneracy, the work improvement is an exponential factor in the clique size compared to previous results. Moreover, we present a low-depth approximation to the community degeneracy (which can be arbitrarily smaller than the degeneracy). This approximation enables a low depth clique listing algorithm whose runtime is parameterized by the community degeneracy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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