2 papers
math.OC2025
Tightness of SDP and Burer-Monteiro Factorization for Phase Synchronization in High-Noise Regime
Anderson Ye Zhang
We study the difference between the maximum likelihood estimation (MLE) and its semi-definite programming (SDP) relaxation for the phase synchronization problem, where latent p…
math.ST2025
Misspecified Maximum Likelihood Estimation for Non-Uniform Group Orbit Recovery
Sheng Xu, Anderson Ye Zhang, Amit Singer
We study maximum likelihood estimation (MLE) in the generalized group orbit recovery model, where each observation is generated by applying a random group action and a known, fixed…