About Me

I am a Ph.D. Student at the Department of Systems Engineering and Engineering Management, The Chinese University of Hong Kong (CUHK), co-supervised by Prof. Jeffrey Xu YU and Prof. Hong Cheng. Previously, I obtained my Bachelor’s degree from Wuhan University in 2021.

My research interests lie in graph data analytics, especially for subgraph matching and graph mining algorithms.

Publications

Conference Papers

[PVLDB'26] Subgraph Enumeration: Beyond Tree Decomposition

Qiyan LI, Jeffrey Xu Yu, Zongyan He

Proceedings of the VLDB Endowment (PVLDB), 2026

[PVLDB'25] Subgraph Matching: A New Decomposition Based Approach

Qiyan LI, Jeffrey Xu Yu, Zongyan He

Proceedings of the VLDB Endowment (PVLDB), 2025

[PVLDB'24] Fast Local Subgraph Counting

Qiyan LI, Jeffrey Xu Yu

Proceedings of the VLDB Endowment (PVLDB), 2024

[SIGMOD'21] A Learned Sketch for Subgraph Counting

Kangfei Zhao, Jeffrey Xu Yu, Hao Zhang, Qiyan LI, Yu Rong

Proceedings of the ACM SIGMOD International Conference on Management of Data (SIGMOD), 2021

[APWeb-WAIM'21] FANE: A Fusion-Based Attributed Network Embedding Framework

Guanghua Li, Qiyan LI, Jingqiao Liu, Yuanyuan Zhu, Ming Zhong

Web and Big Data: 5th International Joint Conference (APWeb-WAIM), 2021

[ICDE'20] Skyline Cohesive Group Queries in Large Road-social Networks

Qiyan LI, Yuanyuan Zhu, Jeffrey Xu Yu

IEEE International Conference on Data Engineering (ICDE), 2020

Journal Papers

[TKDE'23] Skyline Group Queries in Large Road-Social Networks Revisited

Qiyan LI, Yuanyuan Zhu, Junhao Ye, Jeffrey Xu Yu

IEEE Transactions on Knowledge and Data Engineering (TKDE), 2023

[VLDBJ'23] Learned Sketch for Subgraph Counting: a holistic approach

Kangfei Zhao, Jeffrey Xu Yu, Qiyan LI, Hao Zhang, Yu Rong

The VLDB Journal (VLDBJ), 2023

Short/Demo Papers

[ICDE'22] How Learning Can Help Complex Cyclic Join Decomposition

Hao Zhang, Qiyan LI, Kangfei Zhao, Jeffrey Xu Yu, Yuanyuan Zhu

IEEE International Conference on Data Engineering (ICDE), Demo, 2022

Teaching Experience

TA of Operations Research I (SEEM2440), 2026 Spring@CUHK.
TA of Fundamentals in Information Systems (SEEM3550) 2022 Spring, 2023 Spring, 2024 Spring, 2025 Spring@CUHK.
TA of Advanced Database Technologies (FTEC4001), 2022 Fall, 2023 Fall, 2024 Fall@CUHK.
TA of Introduction to Blockchain and Distributed Ledger Technology (FTEC 4007), 2021 Fall@CUHK
TA of Open Systems and Electronic Commerce (SEEM5770 / ECLT5840), 2023 Fall, 2025 Spring@CUHK

Academic Services

I am/was the (external) reviewer for the following conferences/journals:

VLDB’27, VLDB’26, ICDE’26, TKDE’26, VLDB’25, ICDE’25, ICDM’25, TKDE’25, VLDB’24, ICDE’24, WWW’24, ICDM’24, TKDD’24, SIGMOD’23, VLDB’23, ICDE’23, ICDM’23, TKDE’23, TODS’23, SIGIR’23, WWW’23, SIGMOD’22, ICDE’22, CIKM’22, KDD’22, IJCAI’22, WWW’22, etc.

Selected Awards

Yu Gang Song Xiao Scholarship @WHU, 2021.
Outstanding Graduate @WHU, 2021.