A Time-Optimal Randomized Parallel Algorithm for MIS

A Time-Optimal Randomized Parallel Algorithm for MIS
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DOI:
10.1137/1.9781611976465.172
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发表时间:
2021-01
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通讯作者:
M. Ghaffari;Bernhard Haeupler
M. Ghaffari;Bernhard Haeupler
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作者:
M. Ghaffari;Bernhard Haeupler

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本文提出了一个随机并行算法,在互斥读互斥写(EREW)PRAM模型中,以高概率在O(logn)时间和O(mlog2n)工作量内计算最大独立集(MIS).因此,MIS将RNC1。这种时间复杂度是最佳的,它改进了吕比[STOC'85]和阿龙,巴拜,和伊泰[JALG'86],这仍然是最先进的在过去的35年的celebratedO(log2n)时间算法。
We present a randomized parallel algorithm, in the Exclusive-Read Exclusive-Write (EREW) PRAM model, that computes a Maximal Independent Set (MIS) inO(logn) time and usingO(mlog2n) work, with high probability. Thus, MIS ∊ RNC1. This time complexity is optimal and it improves on the celebratedO(log2n) time algorithms of Luby [STOC'85] and Alon, Babai, and Itai [JALG'86], which had remained the state of the art for the past 35 years.