Guang Cheng

activity

20242026

collaborators

Showing math.STShow all

2 papers · 1 filter

math.ST2026

Sharp proper estimation of fixed-component Gaussian location mixtures in polynomial time

Hengzhi He, Guang Cheng

We consider a mixture of at most $k$ unit-covariance Gaussians in $R^{d}$ whose means belong to a fixed-radius ball, with no separation or minimum-weight condition. Doss, Wu…

math.ST2026

Tensor-normal maximum likelihood estimation at the operator-norm sample threshold

Hengzhi He, Guang Cheng

Let $X_{1}, \dots, X_{n}$ be independent Gaussian tensors in $R^{d_{1}} \otimes \dots \otimes R^{d_{k}}$ with a common covariance matrix given by the Kronecker product of $k$ …