Xuchuang Wang

My research centers on online learning (theory, also known as sequential decision-making under uncertainty) and quantum networking (application). I develop rigorous algorithms for multi-agent online learning, with a focus on efficient communications, heterogeneous agents, and realistic feedback. I also devise practical algorithms for quantum networks, with a focus on routing (optimization) and network tomography (evaluation).

I am a RGC Junior Research Fellow in the Department of Computer Science and Engineering at Chinese University of Hong Kong and an incoming Assistant Professor in the Department of Computer Science at Hong Kong Baptist University.

Prior to this, I was a postdoctoral researcher for three years in the Manning College of Information & Computer Science at University of Massachusetts Amherst, working with Don Towsley at ACQuIRe Lab and Mohammad Hajiesmaili at SOLAR Lab. I received my Ph.D. in the Department of Computer Science & Engineering at The Chinese University of Hong Kong under the guidance of John C.S. Lui at ANSR Lab. I obtained my B.Eng. with Hons. (now Qian Xuesen Honors College) from Xi’an Jiaotong University.

I am actively looking for P.h.D students starting in Fall 2026! Please feel free to reach out!

research highlights

multi-agent sequential decision-making:
- communication-efficient algorithms (SIGMETRICS’25, NeurIPS’25, ICLR’23, AISTATS’23),
- heterogenous cooperation algorithms (SIGMETRICS’26, AAAI’25a, UAI’25, UAI’23),
- agents with grouping or shareable policies (Ski-Rental Preprint, ICML’22, IJCAI’22).
quantum network optimization and evaluation:
- quantum network routing optimization (INFOCOM’25, INFOCOM’24),
- quantum best arm identification (AAAI’25b),
- quantum network tomography (Mergecast Preprint, QCNC’26).
online learning with realistic feedback:
- strong-adversary manipulated feedback (ICLR’25, L4DC’25),
- fusing absolute and relative feedback (ICML’25),
- multi-fidelity feedback (NeurIPS’23).

news

Mar 07, 2026	Invited to give a talk at UNC Charlotte [Declined]. See you at Hong Kong, instead.
Feb 10, 2026	Invited to give a talk at Texas Tech. See you at Lubbock, TX!
Feb 07, 2026	Invited to give a talk at UConn. See you at Storrs, CT!
Feb 06, 2026	Our OPAL paper on optimizing quantum network tomography is accepted by QCNC 2026.
Jan 28, 2026	Invited to give a talk at RIT. See you at Rochester, NY!

selected publications

ICML

Fusing Reward and Dueling Feedback in Stochastic Bandits

Xuchuang Wang, Qirun Zeng , Jinhang Zuo , Xutong Liu , Mohammad Hajiesmaili , John C.S. Lui , and Adam Wierman

In Forty-second International Conference on Machine Learning , 2025

Bib PDF

@inproceedings{wang2025fusing,
  title = {Fusing Reward and Dueling Feedback in Stochastic Bandits},
  author = {Wang, Xuchuang and Zeng, Qirun and Zuo, Jinhang and Liu, Xutong and Hajiesmaili, Mohammad and Lui, John C.S. and Wierman, Adam},
  booktitle = {Forty-second International Conference on Machine Learning},
  year = {2025},
}

ICLR

Stochastic Bandits Robust to Adversarial Attacks

Xuchuang Wang, Maoli Liu , Jinhang Zuo , Xutong Liu , John C.S. Lui , and Mohammad Hajiesmaili

In International Conference on Learning Representations , 2025

Bib PDF Poster

@inproceedings{wang2025robust,
  title = {Stochastic Bandits Robust to Adversarial Attacks},
  author = {Wang, Xuchuang and Liu, Maoli and Zuo, Jinhang and Liu, Xutong and Lui, John C.S. and Hajiesmaili, Mohammad},
  booktitle = {International Conference on Learning Representations},
  year = {2025},
}

SIGMETRICS

Asynchronous Multi-Agent Bandits: Fully Distributed vs. Leader-Coordinated Algorithms

Xuchuang Wang*, Yu-Zhen Janice Chen* , Lin Yang , Xutong Liu , Mohammad Hajiesmaili , Don Towsley , and John C.S. Lui

In ACM International Conference on Measurement and Modeling of Computer Systems , 2025

Bib PDF Slides Video

@inproceedings{wang2025asynchronous,
  title = {Asynchronous Multi-Agent Bandits: Fully Distributed vs. Leader-Coordinated Algorithms},
  author = {Wang*, Xuchuang and Chen*, Yu-Zhen Janice and Yang, Lin and Liu, Xutong and Hajiesmaili, Mohammad and Towsley, Don and Lui, John C.S.},
  booktitle = {ACM International Conference on Measurement and Modeling of Computer Systems},
  year = {2025}
}

AAAI

Best Arm Identification with Quantum Oracles

Xuchuang Wang, Yu-Zhen Janice Chen , Matheus Andrade , Jonathan Allcock , Mohammad Hajiesmaili , John C.S. Lui , and Don Towsley

In The 39th Annual AAAI Conference on Artificial Intelligence , 2025

Bib PDF Poster

@inproceedings{wang2025best,
  title = {Best Arm Identification with Quantum Oracles},
  author = {Wang, Xuchuang and Chen, Yu-Zhen Janice and Guedes de Andrade, Matheus and Allcock, Jonathan and Hajiesmaili, Mohammad and Lui, John C.S. and Towsley, Don},
  booktitle = {The 39th Annual AAAI Conference on Artificial Intelligence},
  year = {2025}
}

INFOCOM

Learning Best Paths in Quantum Networks

Xuchuang Wang, Maoli Liu , Xutong Liu , Zhuohua Li , Mohammad Hajiesmaili , John C.S. Lui , and Don Towsley

In Proceedings of the IEEE Conference on Computer Communications , 2025

Bib PDF Slides

@inproceedings{wang2025learn,
  title = {Learning Best Paths in Quantum Networks},
  author = {Wang, Xuchuang and Liu, Maoli and Liu, Xutong and Li, Zhuohua and Hajiesmaili, Mohammad and Lui, John C.S. and Towsley, Don},
  booktitle = {Proceedings of the IEEE Conference on Computer Communications},
  year = {2025}
}