Small ball probability estimates for log-concave measures
Small ball probability estimates for log-concave measures
复制标题
对数凹度量的小球概率估计
DOI:
10.1090/s0002-9947-2011-05411-5
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发表时间:
2012
影响因子:
1.3
通讯作者:
G. Paouris
中科院分区:
文献类型:
--
作者:
G. Paouris
We establish a small ball probability inequality for isotropic log-concave probability measures: there exist absolute constants c1, c2 > 0 such that if X is an isotropic log-concave random vector in R with ψ2 constant bounded by b and if A is a non-zero n × n matrix, then for every e ∈ (0, c1) and y ∈ R, P (‖Ax− y‖2 6 e‖A‖HS) 6 e ( c2 b ‖A‖HS ‖A‖op )2 , where c1, c2 > 0 are absolute constants.