From Sparse to Smart: Leveraging AI for Effective Online Judge Problem Classification in Programming Education. - Filipe Dwan Pereira; Maely Moraes; Marcelo Henrique Oliveira Henklain; Arto Hellas; Elaine Oliveira; Dragan Gasevic; Raimundo S. Barreto; Rafael Mello (EC-TEL (1), 2024)