Higher order concentration of measure

Higher order concentration of measure
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高阶测量浓度

DOI:
10.1142/s0219199718500438
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发表时间:
2017
影响因子:
1.6
通讯作者:
H. Sambale
H. Sambale
中科院分区:
数学2区
文献类型:
--
作者:
S. Bobkov;F. Gotze;H. Sambale

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我们研究测度集中现象的强化形式,通常以对于任意\(k\)的\(k\)阶随机展开为中心。这些界基于\(k\)阶导数或差分算子。特别地,我们考虑独立随机变量的函数以及满足对数Sobolev不等式的概率测度上的可微函数的偏差,还有单位球面上的函数。应用包括\(U\)-统计量的集中不等式,以及通过球面上的多项式逼近(Edgeworth型展开)得到的对称函数类的集中不等式。 注:原文中[Formula: see text]部分由于不清楚具体公式内容,可能会对翻译的准确性造成一定影响,这里统一用\(k\)和\(U\)代替公式占位符进行翻译,你可根据实际情况进行调整。
We study sharpened forms of the concentration of measure phenomenon typically centered at stochastic expansions of order [Formula: see text] for any [Formula: see text]. The bounds are based on [Formula: see text]th order derivatives or difference operators. In particular, we consider deviations of functions of independent random variables and differentiable functions over probability measures satisfying a logarithmic Sobolev inequality, and functions on the unit sphere. Applications include concentration inequalities for [Formula: see text]-statistics as well as for classes of symmetric functions via polynomial approximations on the sphere (Edgeworth-type expansions).