Letian Yang

prof_pic_london.jpg

Hi, I am Letian, a fourth-year Ph.D. candidate in Statistics in the Department of Data Sciences and Operations at the USC Marshall School of Business, advised by Professor Dennis Shen. I work on causal inference and high-dimensional statistics.

Before USC, I received my B.S. in Statistics from the Southern University of Science and Technology (SUSTech) and spent a semester as an exchange student at UC Berkeley.

My research is about drawing reliable conclusions from messy, complex data. My main project studies how to measure the true effect of a change in a randomized experiment when there are far more variables than data points. I also work on using large language models to improve recommendations, and on deep learning for context-specific gene prioritization.

news

Aug 2026 I wrapped up my summer internship as a Data Scientist at Roblox!
Jul 2026 I’m honored to have received a Marshall Mini Grant from the USC Marshall School of Business!
Nov 2025 I’m excited to share that I have passed my qualifying exam and am now officially a Ph.D. candidate!
Nov 2024 Our preprint, Algebraic and Statistical Properties of the Partially Ordinary Least Squares Interpolator, is now live on arXiv!
Oct 2024 I have successfully passed the summer paper milestone in the Statistics PhD program!