My latest homepage can be found here.

Biography

I am now an assistant professor at the College of Software, Nankai University. My research interests focus on AIOps, including anomaly detection, failure diagnosis, root cause analysis and failure prediction. Before joining Nankai University, I got my Ph. D. in the Department of Computer Science and Technology at Tsinghua University, advised by Professor  Dan Pei and Professor  Youjian Zhao. I received my B.S. in the Statistical specialty of Department of Applied Mathematics , School of Science, Northwestern Polytechnical University in 2012.  I did my internship in Baidu, one of the largest search engines in the world, from January 2014 to May 2018.

Research Interests

• Internet service performance measurement and management— e.g., anomaly detection, root cause analysis
• Routing and switching in Data Center Networks

Publications

• HotSpot: Anomaly Localization for Additive KPIs with Multi-Dimensional Attributes
  Yongqian Sun, Youjian Zhao, Ya Su, Dapeng Liu, Xiaohui Nie, Yuan Meng, Shiwen Cheng, Dan Pei, Shenglin Zhang, Xianping Qu, Xuanyou Guo
  IEEE Access 2018
  Paper  (A journal paper, no slides)
• Opprentice: Towards Practical and Automatic Anomaly Detection Through Machine Learning
  Dapeng Liu, Youjian Zhao, Haowen Xu, Yongqian Sun, Dan Pei, Jiao Luo, Xiaowei Jing, Mei Feng
  ACM IMC 2015, Tokyo, Japan, Oct 2015
  Paper Slides

• Designing Buffer Capacity of Crosspoint-Queued Switch
  Guo Chen, Dan Pei, Youjian Zhao and Yongqian Sun
  IFIP NPC 2014, Ilan, Taiwan, Sep 2014
  Paper Slides