White, A. M., Bai, L., Homan, C., Funchess, M., Cerulli, C., Ptah, A., Pandita, D., & Kautz, H. (2018). Does Reciprocal Gratefulness in Twitter Predict Neighborhood Safety?: Comparing 911 Calls Where Users Reside or Use Social Media. Proceedings of the International AAAI Conference on Web and Social Media, 12(1). https://doi.org/10.1609/icwsm.v12i1.15066