Xuchuang Wang

xuchuangwang@umass.edu

I am a postdoc at University of Massachusetts - Amherst, working with Don Towsley and Mohammad Hajiesmaili. 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.

I am on the 2025-2026 job market looking for full-time academia positions. Please feel free to reach out!

research highlights

multi-agent sequential decision-making:
- communication-efficient algorithms (SIGMETRICS’25, ICLR’23, AISTATS’23),
- heterogenous cooperation algorithms (AAAI’25a, UAI’23, UAI’25).
quantum network performance evaluation:
- quantum network routing optimization (INFOCOM’25, INFOCOM’24),
- quantum best arm identification (AAAI’25b).
online learning theory:
- bandit algorithms robust to adversarial attack (ICLR’25, L4DC’25),
- fusing absolute and relative feedback (ICML’25),
- multi-fidelity best arm identification (NeurIPS’23),
- bandit algorithms with unknown-capacity shareable arms (ICML’22, IJCAI’22).

news

Oct 29, 2025	I will give an invited talk at Wednesday 9:30 AM on `Asynchronous Decision-Making in Multi-Agent Bandits` in INFORMS Annual Meeting at Atlanta, GA.
Sep 01, 2025	Present a poster on “Quantum Top M Arms Identification” at IEEE International Conference on Quantum Computing and Engineering (QCE)’25 at Albuquerque, NM.
Aug 14, 2025	Give a talk on multi-agent ski-rental at Caltech.
Aug 11, 2025	Attend an AIM SQUARE meeting at Caltech.
Jun 13, 2025	Give a talk for the MAthematical performance Modeling and Analysis (MAMA) Workshop on online probe allocation for classical and quantum network tomography.

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

@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}
}

NeurIPS

Multi-Fidelity Multi-Armed Bandits Revisited

Xuchuang Wang, Qingyun Wu , Wei Chen , and John C.S. Lui

In Advances in Neural Information Processing Systems , 2023

Bib PDF Slides

@inproceedings{wang2023fidelity,
  title = {Multi-Fidelity Multi-Armed Bandits Revisited},
  author = {Wang, Xuchuang and Wu, Qingyun and Chen, Wei and Lui, John C.S.},
  booktitle = {Advances in Neural Information Processing Systems},
  year = {2023}
}