Oblivious algorithms for the Max-kAND Problem
Oblivious algorithms for the Max-kAND Problem
复制标题
Max-kAND 问题的遗忘算法
DOI:
10.48550/arxiv.2305.04438
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发表时间:
2023
影响因子:
2.9
通讯作者:
Noah G. Singer
中科院分区:
文献类型:
--
作者:
Noah G. Singer
Motivated by recent works on streaming algorithms for constraint satisfaction problems (CSPs), we define and analyze oblivious algorithms for the Max-$k$AND problem. This generalizes the definition by Feige and Jozeph (Algorithmica '15) of oblivious algorithms for Max-DICUT, a special case of Max-$2$AND. Oblivious algorithms round each variable with probability depending only on a quantity called the variable's bias. For each oblivious algorithm, we design a so-called"factor-revealing linear program"(LP) which captures its worst-case instance, generalizing one of Feige and Jozeph for Max-DICUT. Then, departing from their work, we perform a fully explicit analysis of these (infinitely many!) LPs. In particular, we show that for all $k$, oblivious algorithms for Max-$k$AND provably outperform a special subclass of algorithms we call"superoblivious"algorithms. Our result has implications for streaming algorithms: Generalizing the result for Max-DICUT of Saxena, Singer, Sudan, and Velusamy (SODA'23), we prove that certain separation results hold between streaming models for infinitely many CSPs: for every $k$, $O(\log n)$-space sketching algorithms for Max-$k$AND known to be optimal in $o(\sqrt n)$-space can be beaten in (a) $O(\log n)$-space under a random-ordering assumption, and (b) $O(n^{1-1/k} D^{1/k})$ space under a maximum-degree-$D$ assumption. Even in the previously-known case of Max-DICUT, our analytic proof gives a fuller, computer-free picture of these separation results.
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DOI:
10.1109/focs57990.2023.00055
发表时间:
2023
期刊:
64th {IEEE} Annual Symposium on Foundations of Computer Science
影响因子:
--
作者:
Saxena, Raghuvansh R.;Singer, Noah G.;Sudan, Madhu;Velusamy, Santhoshini
通讯作者:
Velusamy, Santhoshini
DOI:
--
发表时间:
2022
期刊:
{APPROX/RANDOM} 2022
影响因子:
--
作者:
Chou, Chi-Ning;Golovnev, Alexander;Shahrasbi, Amirbehshad;Sudan, Madhu;Velusamy, Santhoshini
通讯作者:
Velusamy, Santhoshini
DOI:
10.1145/3519935.3519983
发表时间:
2022
期刊:
{STOC} '22: 54th Annual {ACM} {SIGACT} Symposium on Theory of Computing
影响因子:
--
作者:
Chou, Chi-Ning;Golovnev, Alexander;Sudan, Madhu;Velingker, Ameya;Velusamy, Santhoshini
通讯作者:
Velusamy, Santhoshini
DOI:
--
发表时间:
2023
期刊:
{SODA} 2023
影响因子:
--
作者:
Saxena, Raghuvansh R.;Singer, Noah;Sudan, Madhu;Velusamy, Santhoshini
通讯作者:
Velusamy, Santhoshini
DOI:
--
发表时间:
2020
期刊:
Annual Symposium on Foundations of Computer Science
影响因子:
--
作者:
Assadi, Sepehr;Kol, Gillat;Saxena, Raghuvansh;Yu, Huacheng
通讯作者:
Yu, Huacheng