I direct the Data Science Lab at Utah State. My primary research interests are in information quality and data analytics over large-scale networked information systems like the Web, social media, crowdsourcing systems and learning management systems. My research focus has both positive and negative dimensions. On one hand, I focus on threats to these systems and design methods to mitigate negative behaviors; on the other, I look for positive opportunities to mine and analyze these systems for developing next generation algorithms and architectures that can empower decision makers.

Teaching (full list)

Selected Recent Publications (full list)

Recent Professional Activities (full list)

  • Program committee member: WWW 2017, PAKDD 2017, SWDM 2016, CIKM 2016, ASONAM 2016, SocialNLP 2016, IJCAI 2016, iSWAG 2016, ICWSM 2016, ECIR 2016, SAC 2016, CIKM 2015, SWDM 2015, IJCAI 2015, WebQuality 2015, ICWSM 2015, ECIR 2015, iSWAG 2015
  • Tutorial: Social Media Threats and Countermeasures at ICWSM 2014, Social Spam, Campaigns, Misinformation and Crowdturfing at WWW 2014
  • Conference Organization: JCDL 2015 (Poster and Demo Chair)
  • Journal Reviewer: ACM TIST, ACM TKDD, ACM TOIS, ACM TWEB, ACM TOIT, ACM TISSEC, ACM Computing Surveys, IEEE TKDE, IEEE TPDS, IEEE Pervasive Computing, IEEE Internet Computing, IEEE Transactions on Cybernetics, IEEE/ACM TON, Springer Data Mining and Knowledge Discovery, Springer GeoInformatica, International Journal of Cooperative Information Systems

Awards