Qichen Wang

I am a Ph.D. candidate from the Department of Computer Science and Technology at Hong Kong University of Science and Technology, supervised by Professor Ke Yi. Before that, I received my Bachelor’s Degree in Engineering from the Computer Science Department at Zhejiang University. During Aug. 2016 to Jan. 2017, I was a research intern in the Department of Systems Engineering and Engineering Management, The Chinese University of Hong Kong, supervised by Professor Hong Cheng and Professor Jeffrey Xu Yu. I also worked as a research intern in Alibaba, DAMO Academy from June 2019 to Oct. 2019.

I am expected to graduate in July 2022, and I am on the job market now. Please contact me if you are interested.

Research interest

Database Theory and Algorithms; Streaming Processing; Distributed and Parallel Computing; Query Processing for ML & ML for Query Processing; Privacy and Security in Query Processing.

Selected Publications

Conference papers

  • Qichen Wang and Ke Yi. “Conjunctive Queries with Comparisons.” ACM SIGMOD International Conference on Management of Data (SIGMOD), June 2022. PDF (Selected as the ACM SIGMOD Best Paper Honorable Mention)

  • Qichen Wang and Ke Yi. “Maintaining Acyclic Foreign-Key Joins Under Updates.” ACM SIGMOD International Conference on Management of Data (SIGMOD), June 2020. PDF

  • Weiguo Zheng, Qichen Wang, Jeffrey Xu Yu, Hong Cheng, and Lei Zou. “Efficient Computation of a Near-Maximum Independent Set over Evolving Graphs.” IEEE International Conference on Data Engineering (ICDE), April 2018.

Demo papers

  • Qichen Wang, Chaoqi Zhang, Danish Alsayed, Ke Yi, Bin Wu, Feifei Li, and Chaoqun Zhan. “Cquirrel: Continuous Query Processing over Acyclic Relational Schemas.” International Conference on Very Large Data Bases (VLDB), August 2021. System demonstration. PDF

Selected Awards

  • ACM SIGMOD Best Paper Honorable Mention award, 2022, ACM SIGMOD

  • RedBird Academic Excellence Award for PhD Student, 2022, HKUST

  • Postgraduate Studentship, 2017-2021, HKUST

  • Scholarship for Elite Students in Basic Science, 2013-2016, Zhejiang University