Research Thrusts

My three research thrusts are (1) Cybersecurity in Web, Social and Crowdsourcing Systems; (2) Big Data Analytics and Mining; and (3) Information Dissemination in Social Systems.

1. Cybersecurity in Web, Social and Crowd-based Systems

  • Detecting Social Spammers and Content Polluters
  • Strategic Campaign Analysis and Detection
  • Protecting the Web against Crowdsourced Manipulation
  • Filtering Misinformation and Spam
  • Tracking, Revealing and Detecting Crowdsourced manipulation

2. Big Data Analytics and Mining

  • Spatio-Temporal Data Mining
  • Recommender System
  • Analyzing and Mining Crowd-based Systems
  • Learning Analytics and Educational Data Mining
  • Community Detection

3. Information Dissemination in Social Systems

  • Information Propagation in Social Systems
  • Counter-Messaging Campaigns


This research has been generously supported by NSF, Google, Amazon, Nvidia, Ministry of Science, ICT and Future Planning in South Korea, Utah State University, and Worcester Polytechnic Institute.