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math.OC2026
Fenchel-Young Estimators of Perturbed Utility Models
Xi Lin, Yafeng Yin, Tianming Liu
The Perturbed Utility Model (PUM) framework provides a generalization of discrete choice analysis, unifying models like Multinomial Logit (MNL) and Sparsemax through convex optimiz…
math.OC2025
Managing ride-sourcing drivers at transportation terminals: a lottery-based queueing approach
Tianming Liu, Yafeng Yin, Vijay Subramanian
Problem definition: Transportation terminals such as airports often experience persistent oversupply of idle ride-sourcing drivers, resulting in long driver waiting times and induc…