Van H. Vu

activity

20232026

collaborators

Showing 2026Show all

3 papers · 1 filter

math.NA2026

Regional Stability and New Eigenvalue Perturbation Bounds

Phuc Tran, Van Vu

Let $A$ be an $n \times n$ symmetric matrix with eigenvalues $λ_{1} \geq \dots \geq λ_{n}$ . Let $A ~ := A + E$ , where $E$ is a symmetric noise matrix, and denote the eigenvalues of $\tild…

math.ST2026

Estimating eigenvectors and eigenspaces of covariance matrices: Optimal Bounds and Conditions for Consistency

Phuc Tran, Van Vu

Let $X = [ξ_{1}, ξ_{2}, ..., ξ_{d}]^{⊤}$ be a zero-mean random vector of large dimension $d$ ( $d \to \infty$ ) with (hidden) covariance matrix $M = (m_{ij})_{1 \leq i, j…

stat.ML2026

Improved Guarantees for Heterogeneous Treatment-Effect Estimation via Matrix Completion

Anay Mehrotra, Phuc Tran, Van H. Vu +1

A central goal of modern causal inference is estimating heterogeneous treatment effects to answer questions like "how does an intervention affect each unit," rather than only on av…