Qing Chen 陈 卿 qing[at]ifi.uzh.ch I recently completed my PhD in Computer Science at the University of Zurich, where I am supervised by Michael Böhlen. I am co-supervised by Sven Helmer. Before I started my PhD in 2020, I worked in PayPal and Qatar Computing Research Institute. I earned a master’s degree in Computer Science from Fudan University in 2016 and a bachelor’s degree in Computer Science from Zhengzhou University in 2013. LinkedIn  |  Google Scholar  |  CV  |  GitHub

Research Interests

Graph database systems

News

• 06/25: I will be attending SIGMOD 2025 in Berlin. I will present our paper. Feel free to reach out
• 08/23: I received CanDoc Grant from University of Zurich
• 10/22: Happy to visit Oracle Zurich and give a talk.
• 09/22: I attended VLDB 2022 in Sydney.
• 08/22: I attended the Factorized Database workshop in Zurich. Nice experience!

Publications

• An experimental comparison of tree-data structures for connectivity queries on fully-dynamic undirected graphs, SIGMOD 2025. Qing Chen, Michael H. Böhlen and Sven Helmer  [codes]   [extended version] 
• Dynamic Spanning Trees for Connectivity Queries on Fully-dynamic Undirected Graphs, VLDB 2022. Qing Chen, Oded Lachish, Sven Helmer, and Michael H. Böhlen   [video]   [slides]   [codes]   [extended version] 

2016 and older

• Graph stream summarization: From big bang to big crunch, SIGMOD 2016. Nan Tang, Qing Chen, and Prasenjit Mitra
• Repair diversification: A new approach for data repairing, Information Sciences, 2016. Chu He, Zijing Tan, Qing Chen, and Chaofeng Sha
• Repairing functional dependency violations in distributed data, DASFAA 2015. Qing Chen, Zijing Tan, Chu He, and Chaofeng Sha
• Repair diversification for functional dependency violations, DASFAA 2015. Best Paper Candidate. Chu He, Zijing Tan, Qing Chen, Zhihui Wang, Chaofeng Sha, and Wei Wang

Supervised Students (in chronological order)

• Alex Schindler, now data engineer at SCIGILITY, Zurich
• Xiaozhe Yao
• Nivedita Nivedita
• Neeraj Kumar
• Andrios Michail
• Xinyu Zhu, now Ph.D. student at UZH DBTG group
• Yuanzhe Gao
• Zheng Luo
• Running Hou, now Ph.D. student at UZH DBTG group
• Mika Schoch

Talks

• A scalable connectivity algorithm for fully dynamic graphs. Oracle Zurich, October 2022.  [slides] 

Program Committee and Reviewer

• ICML 2024, 2025, position track(2025)
• ICLR 2024, 2025
• NeurIPS 2023, 2025, 2026
• AAAI 2025, 2026
• SIGMOD 2025 ARI
• VLDB 2020 external reviewer