🎓 PhD - ed, Computer Science @ Old Dominion University (working closely with Dr. Hongyi Wu and Dr. Chunsheng Xin)
Trying to do some real interesting research on Privacy-preserving Machine Learning and Trustworthy AI, like for your phone.
I am currently recruiting 1-2 PhD students for 26Fall or 27Spring in South Dakota State Uni, Feel free to contact me via email attaching your CV, transcripts and relevant docs with email subject: [PhD Applicant] Name - University - MS/BS
2026. 5 Congrats to Dr. Wang for completing her defense!
2026. 4 One paper about secure protocol is accepted by Trans on services computing! Right before my defense😃
2026. 4 Passed my PhD Defense. 🎉 Officially a Dr. Xu now!🥳🥳
2026. 3 give a talk at New Mexico Tech.
2026. 2 give a talk at Cal State Uni Northridge.
2025. 10 I have been invited as TPC in ICNC 2026🥳
2025. 9 One paper about robust personalized FL accepted by The Journal of Supercomputing🥳
2025. 8 One paper about model compression for private inference accepted by TMLR 🥳
2025. 8 Invited to give a lightning talk at SysteMPC'25👍
2025. 6 One paper accepted by Computer Networks🎉
2025. 5-8 I will intern at SD solutions. LLC. as AI/Cyber Research Intern🎉 Thank you SD solutions.
2025. 1 Two papers accepted by Neurocomputing and Computer Communications
2024. 11 One paper about fast private Transformer inference is online.🌟
2024. 7 One paper about private inference on mobile computing accepted by ICDCS 🧡
🚀 Designed parallel inference pipelines for privacy-preserving MLaaS, reducing latency on edge devices
⚡ Achieved ~60% faster inference with overlap scheduling and pipelining techniques
⚙️ collaborated with PyTorch + CUDA kernels, scalable to cloud deployment
☁️ Demonstrated edge-to-cloud efficiency, bridging research and real-world deployment
Xu, X. et al. SPOT: Structure Patching and Overlap Tweaking for Effective Pipelining in Privacy-Preserving MLaaS with Tiny Clients. 2024 ICDCS.
Xu, J., Guan, C., & Xu, X. (2018). Energy-efficiency for smartphones using interaction link prediction in mobile cloud computing. CCF Conference on Computer Supported Cooperative Work and Social Computing.
☁️Clear out long-standing rumor in related research
🏗️ Developed quantization-friendly network linearization for secure inference
📉 Reduced communication overhead by ~50% without loss of accuracy
⚙️ Optimized LLM and vision model architectures for edge and cloud deployment
🔐 Enabled model compression with minimal performance trade-offs
Xu, X. et al (2025). PrivShap: A Finer-granularity Network Linearization Method for Private Inference. TMLR
🔐 Designed secure and communication-efficient transformer inference protocols
📉 Reduced communication cost by ~60% while maintaining model accuracy
🚀 Improved throughput & latency for large-scale privacy-preserving inference
☁️ Applied to LLMaaS and enterprise secure AI platforms, bridging research to deployment
Xu, X. et al (2024a). Comet: A communication-efficient and performant approximation for private transformer inference. ArXiv Preprint ArXiv:2405.17485.
X. Xu, Q. Zhang, R. Ning, C. Xin, and H. Wu, LUTless: Local Initial Approximation for Secure Power Function in Private Machine Learning, in IEEE Transactions on Services Computing (TSC), 2026.
⚡ Built resilient federated learning frameworks with dynamic trust adaptation and Byzantine robustness
🤝 Developed personalized collaboration mechanisms for heterogeneous clients
🔄 Introduced anti-forgetting strategies for incremental model updates
☁️ Enabled robust and efficient distributed training across cloud and edge environments
Bai, Y., Wang, Y., Xu, X., Yang, Y., Batool, H., Iqbal, Z., & Xu, J. (2025). AsyncDefender: Dynamic trust adaptation and collaborative defense for Byzantine-robust asynchronous federated learning. Computer Networks, 111430.
Wang, Y., Xu, J., Yuan, Q., Bai, Y., Yang, Y., Xu, X., & Batool, H. (2025). Fgcfl: a fine-grained clustering framework for federated learning with heterogeneity data. J. Supercomput., 81(14), 1328.
Xu, J., Zhao, Y., Li, X., Zhou, L., Zhu, K., Xu, X., Duan, Q., & Zhang, R. (2025). Teg-di: Dynamic incentive model for federated learning based on tripartite evolutionary game. Neurocomputing, 621, 129259.
Xu, J., Zhou, L., Zhao, Y., Li, X., Zhu, K., Xu, X., Duan, Q., & Zhang, R. (2025). A two-stage federated learning method for personalization via selective collaboration. Computer Communications, 232, 108053.
Zhu, K., Xu, J., Zhou, L., Li, X., Zhao, Y., Xu, X., & Li, S. (2025). Dmaf: data-model anti-forgetting for federated incremental learning. Cluster Computing, 28(1), 30.
Publications
2026
X. Xu, Q. Zhang, R. Ning, C. Xin, and H. Wu, LUTless: Local Initial Approximation for Secure Power Function in Private Machine Learning, in IEEE Transactions on Services Computing (TSC), 2026.
2025
Wang, Y., Xu, J., Yuan, Q., Bai, Y., Yang, Y., Xu, X., & Batool, H. (2025). Fgcfl: a fine-grained clustering framework for federated learning with heterogeneity data. J. Supercomput., 81(14), 1328.
Bai, Y., Wang, Y., Xu, X., Yang, Y., Batool, H., Iqbal, Z., & Xu, J. (2025). AsyncDefender: Dynamic trust adaptation and collaborative defense for Byzantine-robust asynchronous federated learning. Computer Networks, 111430.
Xu, X., Wang, Z., Ning, R., Xin, C., & Wu, H. (2025). PrivShap: A Finer-granularity Network Linearization Method for Private Inference. TMLR [Code] [Paper]
Xu, J., Zhao, Y., Li, X., Zhou, L., Zhu, K., Xu, X., Duan, Q., & Zhang, R. (2025). Teg-di: Dynamic incentive model for federated learning based on tripartite evolutionary game. Neurocomputing, 621, 129259.
Xu, J., Zhou, L., Zhao, Y., Li, X., Zhu, K., Xu, X., Duan, Q., & Zhang, R. (2025). A two-stage federated learning method for personalization via selective collaboration. Computer Communications, 232, 108053.
Zhu, K., Xu, J., Zhou, L., Li, X., Zhao, Y., Xu, X., & Li, S. (2025). Dmaf: data-model anti-forgetting for federated incremental learning. Cluster Computing, 28(1), 30.
2024
Xu, X., Zhang, Q., Ning, R., Xin, C., & Wu, H. (2024a). Comet: A communication-efficient and performant approximation for private transformer inference. ArXiv Preprint ArXiv:2405.17485.
Xu, X., Zhang, Q., Ning, R., Xin, C., & Wu, H. (2024b). SPOT: Structure Patching and Overlap Tweaking for Effective Pipelining in Privacy-Preserving MLaaS with Tiny Clients. 2024 IEEE 44th International Conference on Distributed Computing Systems (ICDCS), 1318–1329. [Coverage] [Slides] [Paper] [Code]
2023 & before
Garcia, K. R., Ammons, J., Xu, X., & Chen, J. (2023). Phishing in social media: Investigating training techniques on Instagram shop. Proceedings of the Human Factors and Ergonomics Society Annual Meeting (HFES), 67(1), 1850–1855.
Xu, J., Guan, C., & Xu, X. (2018). Energy-efficiency for smartphones using interaction link prediction in mobile cloud computing. CCF Conference on Computer Supported Cooperative Work and Social Computing, 517–526.
Reviewer: TNNLS, Information Science, CVPR 25, ICCV 25, ICLR 25, NeurIPS 2025 ER Workshop, TMLR, TDSC, TMC
TPC: ICNC 2026