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Yilei Wang 王义磊
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I am research scientist in the database and storage lab at Alibaba cloud. My research focus includes data security and data privacy.
Conference Papers
- Yilei Wang, Xiangdong Zeng, Sheng Wang, and Feifei Li. "Jodes: Efficient Oblivious Join in the Distributed Setting." International Conference on Very Large Data Bases (VLDB), September 2025. [full version]
- Tianyao Gu, Yilei Wang, Afonso Tinoco, Bingnan Chen, Ke Yi, and Elaine Shi. "Flexway O-Sort: Enclave-Friendly and Optimal Oblivious Sorting." USENIX Security Symposium (USENIX Security), August 2025.
- Qichen Wang, Qiyao Luo, and Yilei Wang. "Relational Algorithms for Top-k Query Evaluation." ACM SIGMOD International Conference on Management of Data (SIGMOD), June 2024. [pdf] All authors contributed equally to the paper.
- Qiyao Luo, Yilei Wang, Ke Yi, Sheng Wang, and Feifei Li. "Secure Sampling for Approximate Multi-party Query Processing." ACM SIGMOD International Conference on Management of Data (SIGMOD), June 2024. [pdf]
- Qiyao Luo, Yilei Wang, and Ke Yi. "Frequency Estimation in the Shuffle Model with Almost a Single Message." ACM Conference on Computer and Communications Security (CCS), Nov 2022. [pdf]
- Yilei Wang and Ke Yi. "Query Evaluation by Circuits." ACM Symposium on Principles of Database Systems (PODS), June 2022. [full version]
- Yilei Wang and Ke Yi. "Secure Yannakakis: Join-Aggregate Queries over Private Data." ACM SIGMOD International Conference on Management of Data (SIGMOD), June 2021. [pdf] [talk]
- Yuan Qiu, Yilei Wang, Ke Yi, Feifei Li, Bin Wu, and Chaoqun Zhan. "Weighted Distinct Sampling: Cardinality Estimation for SPJ Queries." ACM SIGMOD International Conference on Management of Data (SIGMOD), June 2021. [full version] [talk]
- Zengfeng Huang, Ziyue Huang, Yilei Wang, and Ke Yi. "Optimal Sparsity-Sensitive Bounds for Distributed Mean Estimation." Conference on Neural Information Processing Systems (NeurIPS), December 2019. [pdf]
Projects & Mini Apps
| SecYan | C++ | Two-party secure join-aggregate query processing based on the secure Yannakakis protocol |
| Tieba Spider | Python | Spider for Baidu Tieba. Crawl threads, posts, and comments, and store them into MySQL database |
| StopWatch | C# | A multifunctional stopwatch that is pinned on top of other open applications |
| QSanguosha-Lua | Lua | DIY generals for QSanguosha |
Work Experience
| Since 2022 | Research scientist in Database and Storage Lab, Alibaba Cloud |
Education
| 2017 to 2022 | Research postgraduate in Department of CSE, HKUST Supervised by Prof. Ke Yi |
| 2013 to 2017 | Qiushi Persuit Science Class (Math), Chu Kochen Honors College, Zhejiang University |
Internships
| Jan 2019 to May 2019 |
Alibaba Innovative Research (AIR) Internship in Alibaba, Hangzhou Implemented Wander Join algorithm into a database system named AnalyticDB Did research on efficient distinct count estimation algorithm |
| Mar 2017 to Jun 2017 |
Game Development Intern in LeiHuo Technology, Netease, Hangzhou Contributed to developing a MMORPG named NiShuiHan Online Designed strategies for robots to fight with human players Designed player simulators for both server side and client side |
| Summer 2016 | Research Intern in Department of Computer Science, The University of Hong Kong
Thesis under the supervision of Prof. Chuan Wu: Reward Bound Estimation in Multi-armed Bandit [pdf] |