I am a 4th year Ph.D. candidate of SAND Lab, Department of Computer Science, University of California, Santa Barbara. I am co-advised by Prof. Ben Zhao and Prof. Heather Zheng.

My research interests are centered around large-scale data analysis, with a focus on online social networks (OSNs), graph analysis and modeling. Most of my work is measurement-driven and modeling based, using data mining and machine learning techniques. I have also done research on advertising on OSNs, studying user behaviors and impact on financial markets, and network traffic monitoring.


2015 August: Our paper Towards Graph Watermarks accepted by COSN'15

2014 December: PH.D. Qualification Talk Graph Privacy in Major Area Exam of UCSB [Talk Slides]


Xiaohan Zhao,Qingyun Liu,Haitao Zheng and Ben Y.Zhao, "Towards Graph Watermarks",Proc. of the ACM Conference on Online Social Networks (COSN'15), Stanford University, California, USA, November 2015.

[PDF], [Talk Slides], [Extended Version]

Qingyun Liu,Shiliang Tang, Megan McQueen, Richard Jiang, Haitao Zheng and Ben Y.Zhao,"Investor Behavior and Impact on International Stock Markets",submitted, currently under review

Qingyun Liu,Shiliang Tang, Xinyi Zhang, Xiaohan Zhao, Ben Y.Zhao and Haitao Zheng, "Network Growth and Link Prediction Through an Empirical Lens",submitted, currently under review

Qingyun Liu,Xiaohan Zhao, Walter Willinger, Xiao Wang, Ben Y.Zhao and Haitao Zheng, "Self-similarity in Social Network Dynamics",submitted, currently under review

Junjie Yao, Bin Cui, Zijun Xue and Qingyun Liu, "Provenance-based Indexing Support in Micro-blog Patlforms",,Proc. of the IEEE 28th International Conference on Date Engeneering (ICDE'12), Arlington, VA, USA, April 2012. [PDF]