RogĂ©rio Sousa and Thiago Pardo. 2021. The Challenges of Modeling and Predicting Online Review Helpfulness. In Anais do XVIII Encontro Nacional de InteligĂȘncia Artificial e Computacional, novembro 29, 2021, Evento Online, Brasil. SBC, Porto Alegre, Brasil, 727-738. DOI: https://doi.org/10.5753/eniac.2021.18298.