Zifan Liu

Ph.D. Student
Computer Science
University of Wisconsin-Madison


UW-Madison CS Building 4362

Research Interest

Data Management / Artificial Intelligence / Robust Statistics

CV / LinkedIn / Github


I am a Ph.D. student in Computer Science at University of Wisconsin-Madison, advised by Professor Theodoros (Theo) Rekatsinas. I am a member of UW-Madison Database Group. I work on robust statistics and machine learning from both the theoretical and practical sides. Currently, I am studying the problem of robust mean estimation under coordinate-level corruption. Meanwhile, I am developing data diagnostics systems to help improve the robustness of machine learning pipelines.

I obtained my Bachelor's degree in Computer Science from Shanghai Jiao Tong University (SJTU) in 2018. I worked in Lab of Innovation on Networking with Professor Hongzi Zhu when I was in SJTU.


Picket: Self-supervised Data Diagnostics for ML Pipelines
Zifan Liu, Zhechun Zhou, Theodoros Rekatsinas
Pre-print, 2020

Robust Mean Estimation under Coordinate-level Corruption with Missing Entries
Zifan Liu, Jongho Park, Nils Palumbo, Theodoros Rekatsinas, and Christos Tzamos
Pre-print, 2020

HyperSight: boosting distant 3D vision on a single dual-camera smartphone
Zifan Liu, Hongzi Zhu, Junchi Chen, Shan Chang, and Lili Qiu
Proceedings of the 17th Conference on Embedded Networked Sensor Systems.

HyperEar: Indoor Remote Object Finding with a Single Phone
Hongzi Zhu, Yuxiao Zhang, Zifan Liu, Shan Chang, and Yingying Chen
Proceedings of IEEE ICDCS 2019.


COSMOS: An AI platform for knowledge discovery and scientific model curation

  • COSMOS is an AI-powered technical assistant that extracts and assimilates data from heterogeneous sources to accelerate analytics and knowledge discovery.
  • In this project, I worked on the problem of connecting metions of variables with the corresponding equations, and finding the texts that describe the meaning of them in scientific papers.

Scholarship & Honors

Outstanding Undergraduate of Shanghai Jiao Tong University, 2018

China National Scholarship (top 0.2% nationwide), 2014-2015 & 2015-2016

Academic Excellence Scholarship (Class A) of Shanghai Jiao Tong University, 2014-2015 & 2015-2016