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Zhuqing Liu

Assistant Professor

University of North Texas

Department of Computer Science and Engineering

Email: Zhuqing.Liu@unt.edu

Education

  • PhD, Ohio State University, 2024
    Major: Electrical and Computer Engineering

Professional Positions

    Professional

  • PhD, The Ohio State University,. The Ohio State University,. (2019 - 2024).

Teaching

Teaching Experience

    University of North Texas

  • CSCE 4201 - Introduction to Artificial Intelligence, 1 course.
  • CSCE 5210 - Fundamentals of Artificial Intelligence, 2 courses.
  • CSCE 5215 - Machine Learning, 1 course.
  • CSCE 6280 - Advanced Topics in Artificial Intelligence, 1 course.
  • CSCE 6940 - Individual Research, 2 courses.

Research

Published Intellectual Contributions

    Conference Proceeding

  • Zhang, Z., Liu, Z., Zhang, X., Chen, W., Yang, J., Liu, J. (2026). Multi-Objective Bilevel Learning. The 40th Annual AAAI Conference on Artificial Intelligence.
  • Zhang, B., Chen, Y., Fang, M., Liu, Z., Nie, L., Li, T., Liu, Z. (2026). Practical Poisoning Attacks against Retrieval-Augmented Generation. ACM Symposium on Access Control Models and Technologies.
  • Zhang, B., Xin, H., Chen, Y., Liu, Z., Yi, B., Li, T., Nie, L., Liu, Z., Fang, M. (2026). Who Taught the Lie? Responsibility Attribution for Poisoned Knowledge in Retrieval-Augmented Generation. In Proc. IEEE Symposium on Security and Privacy.
  • Fang, M., Liu, Z., Zhao, X., Liu, J. (2025). Byzantine-Robust Federated Learning over Ring-All-Reduce Distributed Computing. Proceedings of the ACM Web Conference.
  • Fang, M., Nabavirazavi, S., Liu, Z., Sun, W., Iyengar, S.S., Yang, H. (2025). Do We Really Need to Design New Byzantine-robust Aggregation Rules?. Proceedings Network and Distributed System Security Symposium (NDSS). https://www.ndss-symposium.org/wp-content/uploads/2025-1796-paper.pdf
  • Qin, Z., Liu, Z., Lu, S., Liang, Y., Liu, J. (2025). DUET: Decentralized Bilevel Optimization without Lower-Level Strong Convexity. The Thirteenth International Conference on Learning Representations (ICLR). The Thirteenth International Conference on Learning Representations.
  • Quan, Y., Wang, C., Zhai, S., Fang, M., Liu, Z. (2025). Enhancing Privacy in Decentralized Min-Max Optimization: A Differentially Private Approach. in Proc. ACM MobiHoc.
  • Kasyap, H., Fang, M., Liu, Z., Maple, C., Tripathy, S. (2025). Fairness-Constrained Optimization Attack in Federated Learning". In Proc. IEEE TrustCom.
  • Wang, W., Ma, Q., Zhang, Z., Liu, Y., Liu, Z., Fang, M. (2025). Poisoning Attacks and Defenses to Federated Unlearning. Proceedings of the ACM Web Conference 2025 (WWW).
  • Cheng, Z., Sun, J., Gao, A., Quan, Y., Liu, Z., Hu, X., Fang, M. (2025). Secure Retrieval-Augmented Generation against Poisoning Attacks. IEEE BigData.
  • Liu, Z., Dong, C., Momma, M., Shao, S., Xu, S., Yang, H., Liu, J. (2025). STIMULUS: Achieving Fast Convergence and Low Sample Complexity in Stochastic Multi-Objective Learning. Conference on Uncertainty in Artificial Intelligence (UAI).
  • Dou, Z., Wang, J., Sun, W., Liu, Z., Fang, M. (2025). Toward Malicious Clients Detection in Federated Learning. In Proc. ACM AsiaCCS.
  • Zhang, B., Xin, H., Fang, M., Liu, Z., Yi, B., Li, T., Liu, Z. (2025). Traceback of Poisoning Attacks to Retrieval-Augmented Generation. In Proc. The Web Conference (WWW).
  • Liu, Z., Zhang, X., Liu, J., Zhu, Z., Lu, S. (2024). PILOT: An O (1/K)-Convergent Approach for Policy Evaluation with Nonlinear Function Approximation. International Conference on Learning Representations.
  • Dou, Z., Hu, X., Yang, H., Liu, Z., Fang, M. (2024). Adversarial Attacks to Multi-Modal Models. LAMPS 2024 - Proceedings of the 1st ACM Workshop on Large AI Systems and Models with Privacy and Safety Analysis. 35-46. https://api.elsevier.com/content/abstract/scopus_id/85215502541
  • Qiu, P., Li, Y., Liu, Z., Khanduri, P., Liu, J., Shroff, N.B., Bentley, E.S., Turck, K. (2023). Diamond: Taming sample and communication complexities in decentralized bilevel optimization. IEEE INFOCOM 2023-IEEE conference on computer communications. 1--10.
  • Yang, H., Liu, Z., Liu, J., Dong, C., Momma, M. (2023). Federated multi-objective learning. Other. 36 39602--39625.
  • Liu, Z., Zhang, X., Lu, S., Liu, J. (2023). Precision: Decentralized constrained min-max learning with low communication and sample complexities. Proceedings of the Twenty-fourth International Symposium on Theory, Algorithmic Foundations, and Protocol Design for Mobile Networks and Mobile Computing. 191--200.
  • Liu, Z., Zhang, X., Khanduri, P., Lu, S., Liu, J. (2023). Prometheus: taming sample and communication complexities in constrained decentralized stochastic bilevel learning. International Conference on Machine Learning. 22420--22453.
  • Liu, Z., Zhang, X., Khanduri, P., Lu, S., Liu, J. (2022). Interact: Achieving low sample and communication complexities in decentralized bilevel learning over networks. Proceedings of the Twenty-Third International Symposium on Theory, Algorithmic Foundations, and Protocol Design for Mobile Networks and Mobile Computing. 61--70.
  • Zhang, X., Fang, M., Liu, Z., Yang, H., Liu, J., Zhu, Z. (2022). Net-fleet: Achieving linear convergence speedup for fully decentralized federated learning with heterogeneous data. Proceedings of the Twenty-Third International Symposium on Theory, Algorithmic Foundations, and Protocol Design for Mobile Networks and Mobile Computing. 71--80.
  • Liu, Z., Zhang, X., Liu, J. (2022). Synthesis: A semi-asynchronous path-integrated stochastic gradient method for distributed learning in computing clusters. Proceedings of the Twenty-Third International Symposium on Theory, Algorithmic Foundations, and Protocol Design for Mobile Networks and Mobile Computing. 151--160.
  • Zhang, X., Liu, Z., Liu, J., Zhu, Z., Lu, S., Ranzato, M., Beygelzimer, A., Dauphin, Y., Liang, P., Vaughan, J.W. (2021). Taming Communication and Sample Complexities in Decentralized Policy Evaluation for Cooperative Multi-Agent Reinforcement Learning. Advances in Neural Information Processing Systems. 34 18825--18838. Curran Associates, Inc.. https://proceedings.neurips.cc/paper_files/paper/2021/file/9c51a13764ca629f439f6accbb4ec413-Paper.pdf
  • Liu, Z., Duan, H., Yang, Y., Hu, X. (2016). Pendulum-like oscillation controller for UAV based on L\'evy-flight pigeon-inspired optimization and LQR. 2016 IEEE Symposium Series on Computational Intelligence (SSCI). 1--6.

    • Journal Article

  • Zhang, B., Fang, M., Liu, Z., Yi, B., Zhou, P., Wang, Y., Li, T., Liu, Z. (2026). Practical Framework for Privacy-Preserving and Byzantine-robust Federated Learning. In IEEE Transactions on Information Forensics and Security..
  • Pang, L.S., Liao, X., Zhao, C.Y., Li , C.P., Liu, Z., Ma, S. (2025). From Radioactive Effluent to Drinking Water: Efficient Removal of Trace (99)TcO(4) (-)/ReO(4) (-) by Cationic Porous Aromatic Framework.. Other. 12 (9) e2414604.
  • Yang, H., Liu, Z., Zhang, X., Liu, J. (2022). SAGDA: Achieving $$\backslash$mathcal $\$O$\$($\backslash$epsilon\^{}$\$-2$\$) $ Communication Complexity in Federated Min-Max Learning. Other. 35 7142--7154.
  • Zhang, X., Liu, Z., Liu, J., Zhu, Z., Lu, S. (2021). Taming communication and sample complexities in decentralized policy evaluation for cooperative multi-agent reinforcement learning. Other. 34 18825--18838.
  • Bi, L., Zuo, Y., Tao, F., Liao, T.W., Liu, Z. (2017). Energy-aware material selection for product with multicomponent under cloud environment. Other. 17 (3) 031007. American Society of Mechanical Engineers.

Service

Professional Service

  • Reviewer, Conference Paper, ICLR. (2026 - 2026).
  • Reviewer, Conference Paper, ACM CCS. (2025 - 2025).
  • Reviewer, Conference Paper, CVPR. (2025 - 2025).
  • Reviewer, Conference Paper, ICLR. (2025 - 2025).
  • Reviewer, Conference Paper, ICML. (2025 - 2025).
  • Reviewer, Conference Paper, IEEE TNET 2025. (2025).
  • Reviewer, Conference Paper, KDD. (2025 - 2025).
  • Reviewer, Conference Paper, NeurIPS. (2025 - 2025).
  • Reviewer, Grant Proposal, NSF. (2025 - 2025).
  • Reviewer, Grant Proposal, NSF. Denton, TX. (2025 - 2025).
  • Attendee, Meeting, SaTC Aspire PI Workshop. DC, (2025).
  • Guest Speaker, University of Texas at Dallas. Dallas, Texas. (November 26, 2024 - November 26, 2024).
  • Reviewer, Journal Article, TMC. (October 1, 2024 - October 8, 2024).
  • Reviewer, Conference Paper, KDD. (September 27, 2024 - October 7, 2024).
  • Reviewer, Conference Paper, NIPS. (August 5, 2024 - August 15, 2024).