Ji Chen

Ph.D. student

Graduate Group in Applied Mathematics

University of California, Davis

Contact information

Room 3131, Math Science Building

Tel: (530) 761-3672

ljichen AT ucdavis DOT edu

About me

I am currently a 5th-year Ph.D. student in Applied Mathematics at UC Davis advised by Professor Xiaodong Li. Prior to that, I received B.S. in Mathematics (Zhiyuan Mathematics Class) from Shanghai Jiao Tong University, and did my undergraduate thesis with Professor Xiaoqun Zhang.

My CV can be found here.

Research interests

  • Convex and nonconvex optimization

  • Machine learning


  • Nonconvex Rectangular Matrix Completion via Gradient Descent without ell_{2,infty} Regularization [arXiv]
    Ji Chen, Dekai Liu and Xiaodong Li, submitted.

  • Model-free Nonconvex Matrix Completion: Local Minima Analysisand Applications in Memory-efficient Kernel PCA [arXiv][JMLR]
    Ji Chen and Xiaodong Li, Journal of Machine Learning Research 20(142):1-39, 2019.