Browsing by Author "Hayes, Nathan"
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Item LEMMA: A Data-Driven Approach to Modeling the Spread of Extremism Over Online Platforms(2022) Fream, Mitchell; Hayes, Nathan; Kochar, Sahil; Kolbeck, Paul; Schneider, Charlie; Schwartz, Russell; Sharon, Olivia; Shen, Yuang; Weiss, Winslow; Wolle, Robert; Jabin, Pierre-EmmanuelThe online spread of extremist ideas has been a growing problem. Team LEMMA has worked to quantitatively model the spread of extremist ideas over Reddit in order to gain insight into how they may spread. A modest dataset of Reddit comments were manually rated on the level of extremist rhetoric present and used to train a machine learning algorithm to automatically classify large swaths of Reddit data. These ratings were then fit to a predictive agent-based model with the hopes of better understanding past trends and potentially forecasting future spread of extremism.