A Grey Wolf Optimizer Feature Selection method and its Effect on the Performance of Document Classification Problem. Journal Port Science Research, [S. l.], v. 4, n. 2, p. 125–131, 2022. DOI: 10.36371/port.2020.2.9. Disponível em: https://jpsr.uruk.edu.iq/index.php/jport/article/view/87. Acesso em: 7 jun. 2026.