activity
20122026
most citedA Kernel Method for Exact Tail Asymptotics --- Random Walks in the Quarter Plane

10 citations · 26 across the 29 of their papers we have counts for

collaborators

35 papers

math.ST2026

Scale Analysis and Shape Selection for the Generalized Gaussian Mechanism under Approximate Differential Privacy

Xiang Zhang, Mohamedou Ould Haye, Yiqiang Q. Zhao

Differential privacy provides a rigorous framework for protecting private information, typically achieved by adding random noise to query results. The generalized Gaussian family i…

math.PR2026

Queues with Correlated Service Times -- the Model

Qihui Bu, Suman Thapa, Yiqiang Q. Zhao

This paper studies multi-server queueing systems with correlated service times, modeled as the queue, which is a natural extension of the recent work by Thapa and Zhao \c…

math.NA2026

GTH Algorithm, Censored Markov Chains, and -Factorization in Block-Form

Qihui Bu, Yiqiang Q. Zhao

In 1985, Grassmann, Taksar, and Heyman published their celebrated paper, in which they introduced a numerically stable algorithm for computing the stationary probabilities of a fin…

math.PR2025

Markov Modelling Approach for Queues with Correlated Service Times -- the Model

Suman Thapa, Yiqiang Q. Zhao

Demand for studying queueing systems with multiple servers providing correlated services was created about 60 years ago, motivated by various applications. In recent years, the imp…

math.ST2024

Statistical inference for mean-field queueing systems

Ioannis Lambadaris, Ahmed Sid-Ali, Wei Sun +1

Mean-field limits have been used now as a standard tool in approximations, including for networks with a large number of nodes. Statistical inference on mean-filed models has attra…

math.OC2024

Exponentially Weighted Algorithm for Online Network Resource Allocation with Long-Term Constraints

Ahmed Sid-Ali, Ioannis Lambadaris, Yiqiang Q. Zhao +2

This paper studies an online optimal resource reservation problem in communication networks with job transfers where the goal is to minimize the reservation cost while maintaining…