On‐line balancing of random inputs

On‐line balancing of random inputs
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随机输入的在线平衡

DOI:
10.1002/rsa.20955
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发表时间:
2019
影响因子:
1
通讯作者:
J. Spencer
J. Spencer
中科院分区:
数学3区
文献类型:
--
作者:
N. Bansal;J. Spencer

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我们考虑一个在线向量平衡游戏,其中向量vt,在{−1,+ 1}n中随机均匀选择,随着时间的推移到达,并且符号xt∈{−1,+ 1}必须在vt到达时立即被选中。目标是最小化有符号和∑txtvt的L∞范数。我们给出了一种在线策略来选择具有高概率值为O(n1/2)的符号xt。在常量范围内,这是最好的,即使向量是预先给定的。
We consider an online vector balancing game where vectors vt, chosen uniformly at random in {− 1, + 1}n, arrive over time and a sign xt ∈ {− 1, + 1} must be picked immediately upon the arrival of vt. The goal is to minimize the L∞ norm of the signed sum ∑txtvt . We give an online strategy for picking the signs xt that has value O(n1/2) with high probability. Up to constants, this is the best possible even when the vectors are given in advance.
DOI: 10.1088/1751-8121/ab227a
发表时间: 2019-07-19
影响因子: 2.1
作者:
Aubin, Benjamin;Perkins, Will;Zdeborova, Lenka
通讯作者: Zdeborova, Lenka