Shilad Sen

  • MSCS Department
  • 1600 Grand Avenue
  • St. Paul, MN 55105

I'm an Assistant Professor at Macalester College in St. Paul. I build systems that empower people to be better contributors to online communities. My research draws on techniques from data-mining, interface design, and social science to encourage members to contribute better content to their communities, and enable communities to identify high-quality contributions from members.

I received my Ph.D. under John Riedl at the University of Minnesota with GroupLens Research. Before that, I worked at Sourcelight Technologies, a startup that built movie recommenders for companies like Blockbuster Video and Comcast. I have also worked for Google, IBM Research, and Thomson Reuters R & D.

When not teaching or researching, I play jazz saxophone with Snowblind, play squash, and spend time with my wife Katy, son Sidney, and daughter Stella.

Find more details about me on my curriculum vitae



This study examines geographic barriers to information in Wikipedia. Focusing on millions of articles about geographic entities (e.g. cities, points of interest) in 79 language editions of Wikipedia, we examine the localness of both the editors working on articles and the sources of the information they cite. We find extensive geographic inequalities in localness, with the degree of localness varying with the socioeconomic status of the local population and the health of the local media.


The WikiBrain Java framework provides easy and efficient access to multi-lingual Wikipedia data. It supports all Wikipedia language editions, providing tools that download and organize datasets published by the Wikimedia foundation. The library provides algorithms that detect identical and related concepts across language editions.


The Macademia website connects scholars who share research interests. Over 2500 researchers have created profiles from 250 institutions. Macademia visualizes the interest graph to help users discover people with similar interests. Macademia also serves as experimental research platform for algorithms and interfaces that navigate the interest graph.


Fall 2013

  • Comp 120: Exploring the Political and Social Structure of the Web
  • Comp 124: Object Oriented Programming and Data Structures
  • Comp 440: Collective Intelligence

Spring 2014

  • Comp 124: Object Oriented Programming and Data Structures
  • Comp 494: CyberPolitics


Conference Papers