Welcome to Xu Sun's Home Page!

Contact Information
Office: Mudd 323
Cell: 917-865-7196
Email: xs2235@columbia.edu

academic and teaching activities
Curriculum Vitae

Background: I am a fourth-year doctorate student working in areas of applied probability. My advisor throughout the years has been Dr. Ward Whitt. I also work with Dr. Agostino Capponi and Dr. David Yao. My research interests include performance analysis of human-operated service systems and the theory of stochastic process limits. Other research interests include probabilistic ranking models.

Scholarly Articles
  1. Creating Work Breaks from Available Idleness, to appear in Manufacturing and Service Operations Management (with Ward Whitt) [PDF]
    • Online Supplement to "Creating Work Breaks from Available Idleness"[PDF]
  2. Heavy-Traffic Limits for Server Idle Times with Customary Server-Assignment Rules, Operations Research Letters (2017), https://doi.org/10.1016/j.orl.2017.10.018 [PDF]
  3. Delay-Based Service Differentiation in a Many-Server Queue with Time-Varying Arrival Rates, revised and resubmitted to Stochastic Systems (with Ward Whitt) [PDF]
    • Online Supplement to "Delay-Based Service Differentiation in a Many-Server Queue with Time-Varying Arrival Rates"[PDF]
  4. Dynamic Network Model of Interbank Lending - Systemic Risk and Liquidity Provisioning, submitted to Mathematics of Operations Research (with Agostino Capponi and David Yao) [PDF]
  5. Asymmetric Kernel Density Estimation Based on Grouped Data with Applications to Loss Model, Communications in Statistics-Simulation and Computation , 43(3), pp.657-672. [PDF]

Honors and Awards


I love learning new languages! I think of languages as shiny pearls to be discovered. Besides Mandarin Chinese, my mother tongue, and English, I also speak and read French. I enjoy hobbies such as swimming, badminton and ballroom dancing. I am also a big fan of the Werewolves of Millers Hollow.

Last updated: October, 2017.

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