Tag: cdot

A general technique for approximating high-dimensional empirical kernel matrices arXiv:2511.03892v1 Announce Type: new Abstract: We present simple, user-friendly bounds for the expected operator norm of a random kernel matrix under general conditions on the kernel function $k(cdot,cdot)$. Our approach uses decoupling results for U-statistics and the non-commutative Khintchine inequality to obtain upper and lower bounds…