Tail sums of Wishart and Gaussian eigenvalues beyond the bulk edge.
Tail sums of Wishart and Gaussian eigenvalues beyond the bulk edge.
复制标题
DOI:
10.1111/anzs.12201
复制
发表时间:
2018-03
影响因子:
1.1
通讯作者:
Johnstone IM
中科院分区:
文献类型:
--
作者:
Johnstone IM
Consider the classical Gaussian unitary ensemble of size N and the real white Wishart ensemble with N variables and n degrees of freedom. In the limits of large N and n, with positive ratio γ in the Wishart case, the expected number of eigenvalues that exit the upper bulk edge is less than one, approaching 0.031 and 0.170 respectively, the latter number being independent of γ. These statements are consequences of quantitative bounds on tail sums of eigenvalues outside the bulk which are established here for applications in high dimensional covariance matrix estimation.
登录
查看更多内容
影响因子:
2.4
作者:
TRACY, CA;WIDOM, H
通讯作者:
WIDOM, H
影响因子:
8.6
作者:
Majumdar, Satya N.;Vergassola, Massimo
通讯作者:
Vergassola, Massimo
影响因子:
8.6
作者:
Marino, Ricardo;Majumdar, Satya N.;Vivo, Pierpaolo
通讯作者:
Vivo, Pierpaolo
影响因子:
1.6
作者:
Tracy, CA;Widom, H
通讯作者:
Widom, H
影响因子:
2.4
作者:
Tracy, CA;Widom, H
通讯作者:
Widom, H