Yunan Liu

Associate Professor

Yunan Liu joined the department as an Assistant Professor in 2011. His research is focused on queuing theory, applied probability and stochastic modeling, with applications to service systems, especially call centers, healthcare systems, and manufacturing systems.


Ph.D. 2011

Doctor of Philosophy in Industrial Engineering

Columbia University

MS 2008

Master of Science

Columbia University

BE 2002

Bachelor of Engineering

Tsinghua University

Research Description

Methodology area: applied probability, stochastic modeling, queueing theory, fluid approximations


Functional law of the iterated logarithm for multi-server queues with batch arrivals and customer feedback
Guo, Y. J. and Liu, Y. A. and Pei, R. H. (2018), Annals of Operations Research, 264(1-2), 157-191.
Many-server Gaussian limits for overloaded non-Markovian queues with customer abandonment
Aras, A. K. and Chen, X. Y. and Liu, Y. A. (2018), Queueing Systems, 89(1-2), 81-125.
Staffing to stabilize the tail probability of delay in service systems with time-varying demand
Liu, Y. A. (2018), Operations Research, 66(2), 514-534.
Allocation heuristics for high-altitude long- endurance UAV image intelligence platforms
Kim, G. and Hodgson, T. J. and King, R. E. and Liu, Y. N. and Kay, M. G. (2017), Military Operations Research, 22(3), 5-19.
Stabilizing performance in a service system with time-varying arrivals and customer feedback
Liu, Y. N. and Whitt, W. (2017), European Journal of Operational Research, 256(2), 473-486.
Approximations for heavily loaded G/GI/n plus GI queues
Liu, Y. N. and Whitt, W. and Yu, Y. (2016), Naval Research Logistics, 63(3), 187-217.
Staffing a service system with non-poisson non-stationary arrivals
He, B. X. and Liu, Y. N. and Whitt, W. (2016), Probability in the Engineering and Informational Sciences, 30(4), 593-621.
A law of iterated logarithm for multiclass queues with preemptive priority service discipline
Guo, Y. J. and Liu, Y. N. (2015), Queueing Systems, 79(3-4), 251-291.
Algorithms for time-varying networks of many-server fluid queues
Liu, Y. A. and Whitt, W. (2014), INFORMS Journal on Computing, 26(1), 59-73.
Many-server heavy-traffic limit for queues with time-varying parameters
Liu, Y. N. and Whitt, W. (2014), Annals of Applied Probability, 24(1), 378-421.
Stabilizing performance in networks of queues with time-varying arrival rates
Liu, Y. N. and Whitt, W. (2014), Probability in the Engineering and Informational Sciences, 28(4), 419-449.
Stabilizing customer abandonment in many-server queues with time-varying arrivals
Liu, Y. N. and Whitt, W. (2012), Operations Research, 60(6), 1551-1564.
A many-server fluid limit for the G(t)/GI/s(t) + GI queueing model experiencing periods of overloading
Liu, Y. N. and Whitt, W. (2012), Operations Research Letters, 40(5), 307-312.
The G(t)/GI/s(t)+GI many-server fluid queue
Liu, Y. N. and Whitt, W. (2012), Queueing Systems, 71(4), 405-444.

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