Libby Hemphill

Libby Hemphill

Director, Resource Center for Minority Data, ICPSR
Research Associate Professor, Institute for Social Research
Associate Professor, School of Information
University of Michigan

  • Phone: 734-615-9524
  • Email:

Brief Biography

Libby Hemphill directs the Resource Center for Minority Data at ICPSR and holds a joint appointment as an Associate Professor in the UM School of Information. She joined ICPSR in September 2017 from Illinois Institute of Technology where she was an Associate Professor of Communication and Information Studies. She studies politicians, non-profit organizations, and television fans to understand how people use social media to organize, discuss, and enact social change. She also develops automated mechanisms for moderating and classifying content in social media in order to reduce toxicity in online conversations. Hemphill received a Ph.D. and M.S. in Information from the University of Michigan and an A.B. from The University of Chicago.

Recent Publications

Liu, P., Guberman, J., Hemphill, L., & Culotta, A. (2018). Forecasting the Presence and Intensity of Hostility on Instagram Using Linguistic and Social Features. In Twelfth International AAAI Conference on Web and Social Media. Retrieved from

Shapiro, M. and Hemphill, L. (2017). Politicians and the Policy Agenda: Does Use of Twitter by the U.S. Congress Direct New York Times Content? New York Times, 39: 56-70. Content? Policy & Internet. 9(1), 109-132. DOI.

Hemphill, L., Culotta, A., & Heston, M. (2016). #Polar Scores: Measuring partisanship using social media content. Journal of Information Technology & Politics. 13(4). DOI

Hemphill, L., Roback, A. (2014). Tweet acts: How constituents lobby Congress via Twitter. Proceedings of the 2014 ACM Conference on Computer Supported Cooperative Work, Baltimore, MD. DOI

Hemphill, L., Otterbacher, J., and Shapiro, M.A. (2013). What's Congress doing on Twitter? Proceedings of the 2013 ACM Conference on Computer Supported Cooperative Work, San Antonio, TX. DOI

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