Hitting sets for regular branching programs
Hitting sets for regular branching programs
复制标题
常规分支程序的命中集
DOI:
10.4230/lipics.ccc.2022.3
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Edward Pyne
中科院分区:
文献类型:
--
作者:
Andrej Bogdanov;William M. Hoza;Gautam Prakriya;Edward Pyne
We construct improved hitting set generators (HSGs) for ordered (read-once) regular branching programs in two parameter regimes. First, we construct an explicit ε-HSG for unbounded-width regular branching programs with a single accept state with seed length [EQUATION] where n is the length of the program. Second, we construct an explicit ε-HSG for width-w length-n regular branching programs with seed length [EQUATION] For context, the "baseline" in this area is the pseudorandom generator (PRG) by Nisan (Combinatorica 1992), which fools ordered (possibly non-regular) branching programs with seed length O(log(wn/ε) · log n). For regular programs, the state-of-the-art PRG, by Braverman, Rao, Raz, and Yehudayoff (FOCS 2010, SICOMP 2014), has seed length Õ(log(w/ε) · log n), which beats Nisan's seed length when log(w/ε) = o(log n). Taken together, our two new constructions beat Nisan's seed length in all parameter regimes except when log w and log (1/ε) are both Ω(log n) (for the construction of HSGs for regular branching programs with a single accept vertex). Extending work by Reingold, Trevisan, and Vadhan (STOC 2006), we furthermore show that an explicit HSG for regular branching programs with a single accept vertex with seed length o(log2 n) in the regime log w = Θ(log(1/ε)) = Θ(log n) would imply improved HSGs for general ordered branching programs, which would be a major breakthrough in derandomization. Pyne and Vadhan (CCC 2021) recently obtained such parameters for the special case of permutation branching programs.
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DOI:
10.1109/focs.2018.00093
发表时间:
2018
期刊:
59th Annual IEEE Symposium on Foundations of Computer Science (FOCS 2018
影响因子:
--
作者:
Forbes, Michael A.;Kelley, Zander
通讯作者:
Kelley, Zander
DOI:
10.1109/focs46700.2020.00123
发表时间:
2020
期刊:
2020 IEEE 61st Annual Symposium on Foundations of Computer Science (FOCS
影响因子:
--
作者:
Ahmadinejad, AmirMahdi;Kelner, Jonathan;Murtagh, Jack;Peebles, John;Sidford, Aaron;Vadhan, Salil
通讯作者:
Vadhan, Salil
影响因子:
1.6
作者:
Hoza, William M.;Zuckerman, David
通讯作者:
Zuckerman, David
DOI:
10.1137/1.9781611977066.5
发表时间:
2022
期刊:
Proceedings of the SIAM Symposium on Simplicity in Algorithms
影响因子:
--
作者:
Pyne, Edward;Vadhan, Salil
通讯作者:
Vadhan, Salil