Xi Chen

activity

20162021

most citedVariance Reduced Median-of-Means Estimator for Byzantine-Robust Distributed Inference

12 citations · 33 across the 9 of their papers we have counts for

collaborators

Showing 2017 · math.STShow all

2 papers · 2 filters

math.ST2017

Testing independence with high-dimensional correlated samples

Xi Chen, Weidong Liu

Testing independence among a number of (ultra) high-dimensional random samples is a fundamental and challenging problem. By arranging $n$ identically distributed $p$ -dimensional ra…

math.ST2017★ 5 cited

A note on the approximate admissibility of regularized estimators in the Gaussian sequence model

Xi Chen, Adityanand Guntuboyina, Yuchen Zhang

We study the problem of estimating an unknown vector $θ$ from an observation $X$ drawn according to the normal distribution with mean $θ$ and identity covariance matrix under the k…