2 papers
math.ST2026
Distributed Online Estimation of Spiked Eigenvalues with Adaptive Weighting under Persistent Aspect Ratio Heterogeneity
Lu Yan, Jiang Hu, Yonghan Zhang +1
We study online estimation of spiked covariance eigenvalues from observations distributed across nodes with heterogeneous and persistent effective sample sizes. In the proporti…
stat.ML2025
Structural Effect and Spectral Enhancement of High-Dimensional Regularized Linear Discriminant Analysis
Yonghan Zhang, Zhangni Pu, Lu Yan +1
Regularized linear discriminant analysis (RLDA) is a widely used tool for classification and dimensionality reduction, but its performance in high-dimensional scenarios is inconsis…