Statistics, Biomedical sciences, and Finance. I can work on these fields for a long time! 

Here is my Google Scholar page.

Selected Journal Publications & Preprints

• Riemannian radial distributions on Riemannian symmetric spaces: Optimal rates of convergence for parameter estimation. [arxiv]
  H. Chen.
  Submitted to Annals of Statistics.
• Mixture of geodesic factor analyzers on Riemannian homogeneous spaces.
  H. Chen, with Q. Sun, C. Huang, and H. Zhu.
  This paper received the IMS Hannan Graduate Student Travel Award, 2024.
• Quotient geometry of bounded or fixed rank correlation matrices. [arxiv]
  H. Chen.
  Submitted to SIAM Journal on Matrix Analysis and Applications.
• Quadratic matrix factorization with applications to manifold learning. [link]
  Z. Zhai, H. Chen, and Q. Sun.
  IEEE Transactions on Pattern Analysis and Machine Intelligence, 2024.