Jiaqi Xue  

Ph.D. Candidate

Computer Science
University of Central Florida
Orlando, FL 32816

Email: jiaqi.xue@ucf.edu

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Biography

Jiaqi Xue is a fourth-year Ph.D. candidate in Computer Science at the University of Central Florida, advised by Prof. Qian Lou. He builds efficient and secure AI systems, spanning efficient LLM serving and routing, secure and trustworthy AI, privacy-preserving machine learning, and agentic code generation.

His recent work focuses on efficient LLM serving and routing: R2-Router (ICML 2026) lets a router reason about which model to use and how much computation to spend, and was the first method to push the RouterArena leaderboard beyond a score of 70; Chain-of-Route (NeurIPS 2026) extends routing from single queries to stateful, multi-turn agentic interactions; and HW‑Router (DAC 2026) makes routing hardware-aware for scalable multi-LLM serving. In secure and trustworthy AI, TrojLLM (NeurIPS 2023) introduced the first automated prompt-injected Trojan attack on large language models, and PRO (NeurIPS 2026) enables precise and robust watermarks for open-source LLMs. In privacy-preserving machine learning, DictPFL (NeurIPS 2025) makes federated learning on FHE-encrypted gradients efficient, and CipherPrune (ICLR 2025) scales hybrid MPC–FHE private Transformer inference. Most recently, he has been working on agentic code generation, from FHE-Coder (ICLR 2026) to multi-agent protocols and harnesses at Amazon Kiro Science.

To date, he has published 17 papers in leading venues across machine learning (NeurIPS, ICML, ICLR), NLP and vision (ACL, EMNLP, NAACL, ECCV), security and privacy (IEEE S&P, PoPETs, SaTML), and systems (DAC, PACT). He is the first or co-first author of nine of them: four at NeurIPS and others at ICML, ECCV, EMNLP, etc. He has interned at Samsung Research America and Amazon Kiro Science.

Experience

Publications

(* indicates equal contribution)

Awards

Services

Reviewer: ICML, ICLR, NeurIPS, AAAI, IJCAI, TMLR, ACL, EMNLP, ICCV, CVPR

Teaching

Graduate Teaching Assistant, University of Central Florida
© 2026 Jiaqi Xue