Comparison of natural language processing techniques in social bot detection on Twitter during Brazilian presidential elections

Currently, there are thousands of social bots acting on different online social networks. Identifying them automatically is a computational challenge.This work uses different natural language processing methods to extract features from tweets collected during the 2018 Brazilian presidential election period in order to make the bot detection process more precise. The developed solution uses artificial intelligence techniques, combining feature selection and classification algorithms.The authors obtained the best results through a union of all the extracted features using the Random Forest classifier, achieving an precision of 0.86 for the bot class and AUC of 0.86.