I am now a research scientist at Ant Research. Previously, I finished my Ph.D. at Institute of Computing Technology, Chinese Academy of Sciences in 2025, advised by Prof. Xiaodong Lee and Prof. Themis Palpanas. Before that, I earned my bachelor’s degree from Nankai University in 2019.

My research focuses on vector database, hybrid retrieval, LLM inference acceleration, and data management. I am open to discussion or collaboration. Feel free to contact me (weijiuqi.wjq@antgroup.com, jiuqi.wei@hotmail.com) if you are interested in my research.

Publications

• Jiuqi Wei, Zhenyu Liao, Ruoyu Han, Quanqing Xu, Chuanhui Yang, Themis Palpanas.
  TaCo: Data-adaptive and Query-aware Subspace Collision for High-dimensional Approximate Nearest Neighbor Search.
  Proceedings of the ACM on Management of Data (SIGMOD) 2026.
• Jiuqi Wei, Quanqing Xu, Chuanhui Yang.
  The Virtuous Cycle: AI-Powered Vector Search and Vector Search-Augmented AI.
  IEEE International Conference on Data Engineering (ICDE) 2026.
• Jiuqi Wei, Xiaodong Lee, Zhenyu Liao, Themis Palpanas, Botao Peng.
  Subspace Collision: An Efficient and Accurate Framework for High-dimensional Approximate Nearest Neighbor Search.
  Proceedings of the ACM on Management of Data (SIGMOD) 2025 (PDF, Code).
• Jiuqi Wei, Xiaodong Lee, Yufan Fu, Ying Li, Botao Peng.
  Dominate data by yourself: a decentralized scheme for data interoperation when data is decoupled from applications.
  World Wide Web Journal (WWWJ) 2025 (PDF).
• Jiuqi Wei, Botao Peng, Xiaodong Lee, Themis Palpanas.
  DET-LSH: A Locality-Sensitive Hashing Scheme with Dynamic Encoding Tree for Approximate Nearest Neighbor Search.
  Proceedings of the VLDB Endowment (VLDB) 2024 (PDF, Code).
• Ying Li, Jiuqi Wei, Ziyu Fei, Yufan Fu, Xiaodong Lee.
  DiSAuth: A DNS-based secure authorization framework for protecting data decoupled from applications.
  Computer Networks 2024 (PDF).
• Yufan Fu, Xiaodong Lee, Jiuqi Wei, Ying Li, Botao Peng.
  Securing the internet’s backbone: A blockchain-based and incentive-driven architecture for DNS cache poisoning defense.
  Computer Networks 2024 (PDF).
• Zhixian Zhuang, Xiaodong Lee, Jiuqi Wei, Yufan Fu, Aiyao Zhang.
  CBCMS: A Compliance Management System for Cross-Border Data Transfer. IEEE International Conference on Big Data (BigData) 2024 (PDF).
• Jiuqi Wei, Ying Li, Yufan Fu, Youyi Zhang, Xiaodong Lee.
  Data interoperating architecture (DIA): Decoupling data and applications to give back your data ownership. IEEE 47th Annual Computers, Software, and Applications Conference (COMPSAC) 2023 (PDF).
• Yufan Fu, Jiuqi Wei, Ying Li, Botao Peng, Xiaodong Lee.
  TI-DNS: A Trusted and Incentive DNS Resolution Architecture based on Blockchain.
  IEEE 22nd International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom) 2023 (PDF).
• Ziyu Fei, Ying Li, Jiuqi Wei, Yufan Fu, Botao Peng, Xiaodong Lee.
  FlexAuth: A Decentralized Authorization System with Flexible Delegation.
  IEEE 22nd International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom) 2023 (PDF).

Professional Service

Conference Officer:

• Workshop Proceedings Chair: VLDB 2025, VLDB 2026.

Reviewer:

• VLDB 2027.

Invited Talks:

• [2025/07] Subspace Collision: A Novel Vector Search Framework. In Bytedance Research, America (Online). Invited by Prof. Ye Liu.
• [2025/05] Subspace Collision: A Novel Vector Search Framework. In Academy of Mathematics and Systems Science, Chinese Academy of Sciences. Invited by Prof. Chuan Zhou.

Selected Awards

• SIGMOD 2025, Travel Grant