Deterministic mincut in almost-linear time
Deterministic mincut in almost-linear time
复制标题
几乎线性时间内的确定性最小割
DOI:
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复制
发表时间:
2021
期刊:
影响因子:
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通讯作者:
Jason Li
中科院分区:
文献类型:
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作者:
Jason Li
We present a deterministic (global) mincut algorithm for weighted, undirected graphs that runs in m1+o(1) time, answering an open question of Karger from the 1990s. To obtain our result, we de-randomize the construction of the skeleton graph in Karger’s near-linear time mincut algorithm, which is its only randomized component. In particular, we partially de-randomize the well-known Benczur-Karger graph sparsification technique by random sampling, which we accomplish by the method of pessimistic estimators. Our main technical component is designing an efficient pessimistic estimator to capture the cuts of a graph, which involves harnessing the expander decomposition framework introduced in recent work by Goranci et al. (SODA 2021). As a side-effect, we obtain a structural representation of all approximate mincuts in a graph, which may have future applications.
DOI:
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发表时间:
2020
期刊:
Annual Symposium on Foundations of Computer Science
影响因子:
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作者:
Li, Jason;Panigrahi, Debmalya
通讯作者:
Panigrahi, Debmalya
DOI:
10.1109/focs46700.2020.00111
发表时间:
2020
期刊:
2020
影响因子:
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作者:
Chuzhoy, Julia;Gao, Yu;Li, Jason;Nanongkai, Danupon;Peng, Richard;Saranurak, Thatchaphol
通讯作者:
Saranurak, Thatchaphol