Jingchun Shao

Mathematics · Texas A&M University

Portrait of Jingchun Shao

I’m a Ph.D. student in Mathematics at Texas A&M University, advised by Professor Simon Foucart. I study computational methods for high-dimensional problems arising in science and machine learning.

I’m particularly interested in understanding how hidden low-dimensional structure arises in complex systems, and in developing efficient algorithms that discover and exploit this structure. My current work focuses on tensor methods, compressed sensing, and optimal recovery.

Before joining Texas A&M, I received an M.S. in Computational and Applied Mathematics from the University of Chicago, where I worked with Professor Yuehaw Khoo, and a B.S. in Pure and Applied Mathematics from Hunan University.

Selected research

Compressed Sensing with Quantized Tensor Trains

Jingchun Shao

Submitted · 2026

Storing and recovering finely discretized signals can be prohibitively expensive. We study how low-rank quantized tensor-train representations and sparse low-order interactions enable recovery from limited measurements. We establish conditions for unique recovery and develop a provably accurate initialization whose measurement requirement grows polynomially with tensor order for fixed structural parameters.

Worst-Case Completion of Tensors with Approximately Few ANOVA Terms

Simon Foucart and Jingchun Shao

Manuscript in preparation · 2026

We study the recovery of high-dimensional tensors with approximately low-order ANOVA structure, with guarantees on the worst-case recovery error. Our work advances the theory of optimal recovery and provides a practical framework for applying these methods to real-world high-dimensional data.