Intent Identification in Unattended Customer Queries Using an Unsupervised Approach. - Hugo D. Rebelo; Lucas A. F. de Oliveira; Gustavo Matheus de Almeida; Cesar Augusto Medina Sotomayor; Geraldo L. Rochocz; Willian E. D. Melo (J. Inf. Knowl. Manag., 2021)