2 papers
math.OC2024
Decentralized Online Riemannian Optimization with Dynamic Environments
Hengchao Chen, Qiang Sun
This paper develops the first decentralized online Riemannian optimization algorithm on Hadamard manifolds. Our algorithm, the decentralized projected Riemannian gradient descent,…
math.ST2022
Distributed Sparse Multicategory Discriminant Analysis
Hengchao Chen, Qiang Sun
This paper proposes a convex formulation for sparse multicategory linear discriminant analysis and then extend it to the distributed setting when data are stored across multiple si…