Greedy and Local Ratio Algorithms in the MapReduce Model
Greedy and Local Ratio Algorithms in the MapReduce Model
复制标题
MapReduce 模型中的贪心算法和局部比率算法
DOI:
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复制
发表时间:
2018
期刊:
影响因子:
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通讯作者:
Paul Liu
中科院分区:
文献类型:
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作者:
Nicholas J. A. Harvey;Christopher Liaw;Paul Liu
MapReduce has become the de facto standard model for designing distributed algorithms to process big data on a cluster. There has been considerable research on designing efficient MapReduce algorithms for clustering, graph optimization, and submodular optimization problems. We develop new techniques for designing greedy and local ratio algorithms in this setting. Our randomized local ratio technique gives $2$-approximations for weighted vertex cover and weighted matching, and an f -approximation for weighted set cover, all in a constant number of MapReduce rounds. Our randomized greedy technique gives algorithms for maximal independent set, maximal clique, and a (1+ε)1n Δ-approximation for weighted set cover. We also give greedy algorithms for vertex colouring with $(1+o(1))Δ colours and edge colouring with (1+o(1))Δ colours.
DOI:
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发表时间:
2019
期刊:
SODA 2019
影响因子:
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作者:
Assadi, S.
Batenai
通讯作者:
Assadi, S.
Batenai