I am an assistant professor at School of Information Sciences, University of Pittsburgh. I am interested in studying social and political networks, as well as computational and visualization methods for understanding network data. My work has focused on large-scale community dynamics, high-dimensional (rich-context) social information summarization and representation. I have been using massive social media data and anonymized cellphone records to understand the collective responses with respect to political events and under exogenous shocks such as emergencies.
I am a computer scientist by training, and a computational social scientist working on questions like: "how would a society be informed?" "how do people share information, ideas and opinions in various contexts?" These questions have led me to explore analytical and computational techniques for mining heterogeneous, multi-relational, and semistructured data that can advance our understanding about structures in networked societies. I was a postdoctoral research fellow at the Institute for Quantitative Social Science, Harvard University and College of Computer and Information Science, Northeastern University.
Co-chairing The International Workshop on Social Web for Disaster Management (SWDM 2016), held in conjunction with CIKM 2016, in Indianapolis, US. We look forward to your participation!
Co-chairing The International Workshop on Collaborative Internet Computing for Disaster Management (CIC-DM 2016), held in conjunction with IEEE CIC 2016, in Pittsburgh, PA, US. We are exciting to have this event in Pitt!
04/2016 Paper accepted to appear in ICWSM 2016: "EigenTransitions with Hypothesis Testing: The Anatomy of Urban Mobility"
04/2016 Three paper accepted to appear in SBP 2016: "Sensing Distress Following A Terrorist Event," "TELELINK: Link Prediction in Social Network Based on Multiplex Cohesive Structures" and "Link Prediction via Multi-Hashing Framework"
I am going to give a tutorial on "Collective Sensemaking via Social Sensors" (with Jiebo Luo and Yuheng Hu) at KDD'16 this August.
See the latest tutorial program.
Chairing The 2016 International Conference on Social Computing, Behavioral-Cultural Modeling, and Prediction (SBP 2016), held in Washington DC, US. See the latest tutorials schedule.
07/2015 Paper accepted to appear in VAST 2015: "TargetVue: Visual Analysis of Anomalous User Behaviors in Online Communication Systems"
Co-chairing The 1st International Workshop on Event Analytics using Social Media Data (EASM 2015), held in conjunction with ICDM 2015, in Atlantic City, NJ, US. We look forward to your participation!
05/2015 Paper published in Journal of the Royal Society Interface (J. R. Soc. Interface):
"Tracking employment shocks using mobile phone data".
We present novel methods to detect mass layoffs, identify individuals affected by them and predict changes in aggregate unemployment rates using call detail records (CDRs) from mobile phones.
The work was covered in WSJ Real Time Economics,
The Boston Globe,
02/2015 Announced the Special Issue on Big Scholar Data Discovery and Collaboration, IEEE Transactions on Big Data (TBD). This special issue will feature a Scholar Data Challenge. We look forward to your submission!
01/2015 Two papers accepted to appear in CHI 2015: "g-Miner: Interactive Visual Group Mining on Multivariate Graphs" and "Trajectory Bundling for Animated Transitions"
» More on earlier updates.