Optimization under uncertainty in the area of online sequential decision-making. 

1. Optimal Routing in Parallel Appointment Queues: The Greedy Policy Y. Xu, S. Kerimov, T. Tezcan & S. Perez-Salazar. 2026.

1. Online Selection with Uncertain Disruption. Xu. Y., Kerimov. S. & Perez-Salazar, S. (2025). 

   • Conference Version: 21st Conference on Web and Internet Economics (WINE 2025)

   • Journal Version: Minor Revision at Operations Research

2.  Improved Ratio for the Single-Query Prophet Inequality Problem. Kim, S., Xu, Y. & Perez-Salazar, S. (2025).

   • To be submitted

3. Sequential Selection with Expiration. Xu, Y., Ghuge, R. & Perez-Salazar, S. (2024).

   • Conference Version: INFORMS Optimization Society Conference. 

   • Journal Version: Submitted to Manufacturing and Service Operations Management (MSOM)

4. (*) A Tensor SVD-based Classification Algorithm Applied to fMRI Data. Keegan, K., Vishwanath, T. & Xu, Y. (2022)

   •  SIAM Undergraduate Research Online 15, 270-294.

   • 3rd place, Undergraduate Statistics Research Project (USRESP)