YOO, J.; KIM, J. Capturing Difficulty Expressions in Student Online Q&A Discussions. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 28, n. 1, 2014. DOI: 10.1609/aaai.v28i1.8718. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/8718. Acesso em: 24 may. 2024.