Me


Department of Computer Science
Northwestern, Evanston, IL

About Me

I am a third-year computer science PhD student with Dr. Brent Hecht at Northwestern University. I am primarily researching how inequalities in the amount of human-generated content contributed by different populations impact the algorithms and research that use this data with the goal of determining how we might more fairly and robustly use this valuable stream of information.

News

December 2016
A paper and a note accepted to CHI 2017! Thanks to my wonderful collaborators at GroupLens and the folks at Google for the internship opportunity!

September 2016
Finished an awesome summer with the good folks in the user experience research team for Google Maps. Now to start at Northwestern University, where I'm excited to meet and start working with all of the amazing labs while also continuing work with the amazing GroupLens Center for Social and Human-Centered Computing!

April 2016
Should have announced this a few months ago, but very very very excited to join the UX team at Google Maps this summer for an internship!

April 2016
Excellent blog post by Hannah Miller on our recent ICWSM 2016 paper about miscommunication that arises from emojis. Give it a read!

March 2016
Presented work on how biases arise in research that uses crowd-derived geographic information at the AAAI Spring Symposium on Observational Studies through Social Media and Other Human-Generated Content! The phonetic pronunciation of the much-shortened acronym (OSSM) sums up the workshop quite nicely.

January 2016
Paper on emoji miscommunication accepted to ICWSM 2016! Awesome collaboration with fellow GroupLens students Hannah Miller, Jacob Thebault-Spieker, and Stephen Chang as well as professors Loren Terveen and Brent Hecht.

December 2015
Two papers to CHI accepted!

Publications

CHI 2017
Johnson, I., McMahon, C., Schöning, J., and Hecht, B. The Effect of Population and "Structural" Biases on Social Media-based Algorithms -- A Case Study in Geolocation Inference Across the Urban-Rural Spectrum. Proceedings of CHI 2017. New York: ACM Press.
Paper PDF

CHI 2017
Johnson, I., Schwanda Sosik, V., and Ballard, K. Stranger Searching in a Strange Land: The Impact of Familiarity on Local Search. Proceedings of CHI 2017. Short Paper. New York: ACM Press.
Paper PDF

ICWSM 2016
Miller, H., Thebault-Spieker, J., Chang, S., Johnson, I., Terveen, L., and Hecht, B. "Blissfully happy" or "ready to fight": Varying Interpretations of Emoji. Proceedings of ICWSM 2016. Menlo Park, CA: AAAI Press.
Paper PDF | Blog Post

CHI 2016
Johnson, I., Sengupta, S., Schöning, J., and Hecht, B. The Geography and Importance of Localness in Geotagged Social Media. Proceedings of CHI 2016. New York: ACM Press.
Paper PDF | CHI '16 Slides | Code

CHI 2016
Johnson, I., Lin, Y., Li, T., Hall, A., Halfaker, A., Schöning, J., and Hecht, B. Not at Home on the Range: Peer Production and the Urban/Rural Divide. Proceedings of CHI 2016. New York: ACM Press.
Paper PDF | CHI '16 Slides | Maps

AAAI Spring Symposium 2016
Johnson, I. and Hecht, B. Structural Causes of Bias in Crowd-derived Geographic Information: Towards a Holistic Understanding. Proceedings of the Association for the Advancement of Artificial Intelligence 2016 Spring Symposium on Observational Studies through Social Media and Other Human-Generated Content.
Paper PDF | OSSM '16 Slides

IJCAI 2015
Sen, S., Johnson, I., Harper, R., Mai, H., Olsen, S., Mathers, B., Vonessen, L., Wright, M., and Hecht, B.. Towards Domain-Specific SR: A Case Study from Geography. Proceedings of the 24th International Joint Conference on Artificial Intelligence (IJCAI ’15). Menlo Park, CA: AAAI Press.
Paper PDF