Changxiao Cai

activity

20052026

most citedIs Q-Learning Minimax Optimal? A Tight Sample Complexity Analysis

17 citations · 39 across the 17 of their papers we have counts for

collaborators

Showing math.STShow all

2 papers · 1 filter

math.ST2021★ 4 cited

Minimax Estimation of Linear Functions of Eigenvectors in the Face of Small Eigen-Gaps

Gen Li, Changxiao Cai, H. Vincent Poor +1

Eigenvector perturbation analysis plays a vital role in various data science applications. A large body of prior works, however, focused on establishing $ℓ_{2}$ eigenvector pert…

math.ST2019★ 6 cited

Subspace Estimation from Unbalanced and Incomplete Data Matrices: $ℓ_{2, \infty}$ Statistical Guarantees

Changxiao Cai, Gen Li, Yuejie Chi +2

This paper is concerned with estimating the column space of an unknown low-rank matrix $A^{⋆} \in R^{d_{1} \times d_{2}}$ , given noisy and partial observatio…

Minimax Estimation of Linear Functions of Eigenvectors in the Face of Small Eigen-Gaps

Subspace Estimation from Unbalanced and Incomplete Data Matrices: ℓ2,∞​ Statistical Guarantees

Subspace Estimation from Unbalanced and Incomplete Data Matrices: $ℓ_{2, \infty}$ Statistical Guarantees