Shilad's School

Research Overview

I'm a Ph.D. candidate at the University of Minnesota with the Grouplens research group. I design systems that empower people to be effective online community contributors. My research draws on techniques from data-mining, machine learning, systems design, human-computer interaction, and Social Science theory.

My specific interests range from collaborative filtering algorithms research, to intelligent displays of user-created tags. I particularly like 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.

You can find more details on my curriculum vitae.

Refereed Papers:

• D. Frankowski, S. Lam, S. Sen, F. Harper, S. Yilek, M. Cassano, J. Riedl, "Recommenders Everywhere: The WikiLens Community-Maintained Recommender System." To appear, WikiSym 2007.
• F. Harper, S. Sen, D. Frankowski, "Supporting Social Recommendations with Activity-Balanced Clustering." To appear, 2007 ACM Recommender Systems.
• S. Sen, F. Harper, A. LaPitz, J. Riedl, "The Quest for Qualtiy Tags."To appear, Group 2007 (acceptance rate: ~28%) [pdf].
• S. Sen, S. Lam, D. Cosley, A. Al-Rashid, D, Frankowski, F. Harper, J. Osterhouse, J. Riedl, "tagging, community, vocabulary, evolution." CSCW 2006 (acceptance rate: 22%) winner, Best Paper (1%) [pdf] [talk].
• S. Sen, W. Geyer, M. Muller, M. Moore, B. Brownholtz, E. Wilcox, "FeedMe, a Collaborative Alert Filtering System." CSCW 2006 (acceptance rate: 22%) [pdf] [talk].
• D. Frankowski, D. Cosley, S. Sen, L. Terveen, J, Riedl. You Are What You Say: Privacy Risks of Public Mentions. Accepted, ACM SIGIR 2006.

Book Chapters:

• B. Schafer, D. Frankowski, J. Herlocker, S.Sen. Collaborative Filtering Recommender Systems. Adaptive Web-Based Systems. Springer, 2007 [electronic chapter].

Conference Presentations:

• Tagging Talk from CSCW 2006 [ppt]
• IBM FEEDme Talk from CSCW 2006 [ppt]