Dr. Huajun He is currently a Research Scientist at Tencent. His primary research focuses on the design of efficient vector databases and Data Agentic Systems, with a particular emphasis on Memory Systems. He obtained his Ph.D. degree from the School of Computing and Artificial Intelligence at Southwest Jiaotong University (SWJTU), China, under the joint supervision of Prof. Yu Zheng and Prof. Tianrui Li. Previously, he served as a research intern at JD Intelligent Cities Research, advised by Dr. Jie Bao. His research interests include Urban Computing, Vector Indexing, LLMs, Spatio-Temporal Data Management, and Distributed Systems.

Education

• Ph.D in SWJTU University, 2020-2024
• M.S. in SWJTU University, 2018-2020
• B.S. in SWJTU University, 2014-2018

Publications

DiST: Efficient Distributed Spatio-Temporal Clustering With Automatic Parameter Optimization
Li, J., Gou, S., Li, R., **He, H**., Li, W., & Zheng, Y.
TKDE, 2025-09-09 00:00:00 +0800
[PDF][Paper Link]

Learning-Based Distributed Spatio-Temporal 𝑘 Nearest Neighbors Join
Li, R., Li, J., Zhou, M., Wang, R., **He, H**., Chen, C., ... & Zheng, Y.
Big Data, 2024-08-14 00:00:00 +0800
[PDF][Paper Link]

An Efficient System for Large-scale Collaborative Tasks in Government
Lulu Wang, Huajun He, Zheyi Pan, Jie Bao, Yu Zheng. An Efficient System for Large-scale Collaborative Tasks in Government[J]//Human-Centric Intelligent Systems. 2024
HCIN, 2024-06-10 00:00:00 +0800
[PDF][Paper Link]

TMan: A High-Performance Trajectory Data Management System Based on Key-value
Huajun He, Zihang Xu, Ruiyuan Li, Jie Bao, Tianrui Li, Yu Zheng. TraSS: Efficient TMan: A High-Performance Trajectory Data Management System Based on Key-value Stores[C]//2024 IEEE 40th International Conference on Data Engineering
ICDE, 2024-05-12 00:00:00 +0800
[PDF][Paper Link]

面向政务协同的访问控制模型
赵大燕，何华均，李宇平，张钧波，李天瑞，郑宇. 面向政务协同的访问控制模型 [J]. 计算机应用. 2024
计算机应用, 2024-03-10 00:00:00 +0800
[PDF][Paper Link]

面向政府大规模协同任务的时空数据管理和分析研究
王璐璐、何华均、潘哲逸、鲍捷、郑宇. 面向政府大规模协同任务的时空数据管理和分析研究.
NDBC, 2023-07-31 00:00:00 +0800
[PDF][Paper Link]

TraSS: Efficient Trajectory Similarity Search Based on Key-Value Data Stores
Huajun He, Ruiyuan Li, Sijie Ruan, Tianfu He, Jie Bao, Tianrui Li, Yu Zheng. TraSS: Efficient Trajectory Similarity Search Based on Key-Value DataStores[C]//2022 IEEE 38th International Conference on Data Engineering
ICDE, 2022-03-23 00:00:00 +0800
[PDF][Paper Link]

Distributed Spatio-Temporal k Nearest Neighbors Join
Li R, Wang R, Liu J, He H, et al. Distributed Spatio-Temporal k Nearest Neighbors Join[C]//Proceedings of the 29th International Conference on Advances in Geographic Information Systems. 2021: 435-445.
SIGSPATIAL, 2021-08-06 00:00:00 +0800
[PDF][Paper Link]

SALON: a universal stay point-based location analysis platform
Hu Y, Ruan S, Ni Y, He H, et al. SALON: a universal stay point-based location analysis platform[C]//Proceedings of the 29th International Conference on Advances in Geographic Information Systems. 2021: 407-410. Best Demo Paper Award!
SIGSPATIAL, 2021-08-06 00:00:00 +0800
[PDF][Paper Link]

POI Alias Discovery in Delivery Addresses using User Locations
He T, Chen G, Meng C, He H, et al. POI Alias Discovery in Delivery Addresses using User Locations[C]//Proceedings of the 29th International Conference on Advances in Geographic Information Systems. 2021: 225-228.
SIGSPATIAL, 2021-08-06 00:00:00 +0800
[PDF][Paper Link]

JUST-Traj: A Distributed and Holistic Trajectory Data Management System
He H, Li R, Bao J, et al. JUST-Traj: A Distributed and Holistic Trajectory Data Management System[C]//Proceedings of the 29th International Conference on Advances in Geographic Information Systems. 2021: 403-406.
SIGSPATIAL, 2021-08-06 00:00:00 +0800
[PDF][Paper Link]

TrajMesa: a distributed NoSQL-based trajectory data management system
Li R, He H, Wang R, et al. TrajMesa: a distributed NoSQL-based trajectory data management system[J]. IEEE Transactions on Knowledge and Data Engineering, 2021.
TKDE, 2021-05-13 00:00:00 +0800
[PDF][Paper Link]

面向海量空间数据的分布式距离连接算法
王如斌, 李瑞远, 何华均, 等. 面向海量空间数据的分布式距离连接算法[J]. 计算机科学, 49
计算机科学, 2021-05-12 00:00:00 +0800
[PDF][Paper Link]

Discovering real-time reachable area using trajectory connections
Li R, Bao J, He H, et al. Discovering real-time reachable area using trajectory connections[C]//International Conference on Database Systems for Advanced Applications. Springer, Cham, 2020: 36-53.
DASFAA, 2020-09-24 00:00:00 +0800
[PDF][Paper Link]

Trajmesa: A distributed nosql storage engine for big trajectory data
Li R, He H, Wang R, et al. Trajmesa: A distributed nosql storage engine for big trajectory data[C]//2020 IEEE 36th International Conference on Data Engineering
ICDE, 2020-04-20 00:00:00 +0800
[PDF][Paper Link]

JUST: JD Urban Spatio-Temporal Data Engine
Li R, He H, Wang R, et al. Just: Jd urban spatio-temporal data engine[C]//2020 IEEE 36th International Conference on Data Engineering
ICDE, 2020-04-20 00:00:00 +0800
[PDF][Paper Link]

Efficient suspected infected crowds detection based on spatio-temporal trajectories
He H, Li R, Wang R, et al. Efficient suspected infected crowds detection based on spatio-temporal trajectories[J]. arXiv preprint arXiv:2004.06653, 2020.
arXiv, 2020-04-11 00:00:00 +0800
[PDF][Paper Link]

HONORS AND AWARDS

• 2024, 西南交通大学优秀毕业生
• 2022, Innovation Patent Award, JD iCity
• 2021, Best Demo Paper Award, ACM SIGSPATIAL
• 2021, Outstanding Intern, JD iCity
• 2020, Outstanding Communist Youth League Member Award
• 2019, 互联网+交通运输创新创业大赛，交通部，国家三等奖
• 2019, Outstanding Graduate Student Award, SWJTU University
• 2018, Outstanding Undergraduate Thesis (优秀本科毕业论文)
• 2017, Special Scholarship, SWJTU University
• 2017, 第十届全国大学生节能减排社会实践与科技竞赛，教育部，国家一等奖
• 2017, 第七届中国大学生服务外包创新创业大赛，教育部、商务部，国家二等奖
• 2016, 第六届中国大学生服务外包创新创业大赛，教育部、商务部，国家二等奖

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