DEM Lunch Seminar with Rouba Ibrahim, University College London, UK

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Operational Effects of Delay Information in Non-Stationary Priority Queues

Abstract

This work is joint with Philipp Afeche, Junqi Hu, and Vahid Sarhangian

This talk examines the operational impact of providing queue position information in priority queueing systems with time-varying arrivals. We model a two-class, multi-server queue using fluid approximations to compare performance under “no information” (perceived positions) versus “full information” (true positions). We prove the stability of a periodic fluid equilibrium and demonstrate that providing information does not uniformly improve performance. Instead, it introduces trade-offs between queue length and abandonment, both within and across priority classes, particularly when demand fluctuates. Our results suggest that the optimal information policy depends on system load and cost structures, and that effective information design may require class-specific disclosure to mitigate these trade-offs.

About the speaker

Rouba Ibrahim is a professor at the School of Management of University College London, where she currently head the Operations & Technology group. She serves on the editorial boards of Management Science and Queueing Systems as an associate editor, and she serves as an Area co-Editor of the Operations and Supply Chains area at Operations Research.  Her research interests lie in service operations management, especially the operational management of queueing systems, from both mathematical and behavioral perspectives.   Professor Ibrahim hold a PhD degree in Operations Research from Columbia University, an MSc in Applied Mathematics and Statistics from Stony Brook University, and a BSc in Mathematics from the American University of Beirut

Language

English

This is a free seminar. Registration is mandatory

Supported by the Fond National de la Recherche,
Luxembourg (19441346)