Professor Sen's research is in designing systems that empower people to be
effective online community contributors. His research draws on techniques from
data-mining, machine learning, systems design, human-computer interaction, and Social
Science theory. 

His interests range from collaborative filtering algorithms research to intelligent
displays of user-created tags - specifically, building software systems, applying data
mining and machine learning techniques on huge data sets, and writing software apps that
touch a large number of users. 

EDUCATION: B.A. Northwestern University;PhD University of Minnesota. 

Professor Sen has been teaching at Macalester since 2008. 



Barriers to the Localness of Volunteered Geographic Information (with Heather Ford, David R. Musicant, Mark Graham, Oliver S.B. Keyes, and Brent Hecht), Proceedings of the 33rd Annual ACM Conference on Human Factors in Computing Systems (2015)


Turkers, Scholars, "Arafat" and "Peace": Cultural Communities and Algorithmic Gold Standards (with M. E. Giesel, R. Gold, B. Hillmann, M. Lesicko, S. Naden, J. Russell, Z. Wang, and B. Hecht), CSCW '15 Proceedings of the 18th ACM Conference on Computer Supported Cooperative Work & Social Computing (2015)


Leveraging advances in natural language processing to better understand Tobler's first law of geography (with Toby Jia-Jun Li and B. Hecht), SIGSPATIAL '14 Proceedings of the 22nd ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (2014)


WikiBrain: Democratizing computation on Wikipedia (with Toby Jia-Jun Li, M. Lesicko, A. Weiland, R. Gold, Y. Li, B. Hillmann, and B. Hecht), OpenSym '14 Proceedings of The International Symposium on Open Collaboration (2014)


Getting to the Source: Where does Wikipedia Get Its Information? (with Heather Ford, David R. Musicant, and Nathaniel Miller), Proceedings of the 9th International Symposium on Open Collaboration (2013)

Contributions to Books

“Collaborative Filtering Recommender Systems” (with Shafer, Frankowski, and Herlocker), The Adaptive Web: Methods and Strategies of Web Personalization (2007)


Tagsplanations: Explaining Recommendations using Tags (with Jesse Vig and John Riedl), International Conference on Intelligent User Interfaces (2009)

Crafting the initial user experience to achieve community goals (with Sara Drenner and Loren Terveen), ACM Recommender Systems (2008)