ABUBAKAR, A. M. .; ALMU, A. . Enhancing User-Item Matrix Using Principal Component Analysis and User Profiling Techniques for User Based Collaborative Filtering Recommender System. International Journal of Science for Global Sustainability, [S. l.], v. 10, n. 3, p. 140–152, 2024. DOI: 10.57233/ijsgs.v10i3.726. Disponível em: https://fugus-ijsgs.com.ng/index.php/ijsgs/article/view/726. Acesso em: 30 may. 2026.