Ramadhani, Ayudha Kusuma. “Perbandingan Algoritma K-Nearest Neighbor Dan Cosine Similarity Untuk Sistem Rekomendasi Kursus Udemy”. RIGGS: Journal of Artificial Intelligence and Digital Business 5, no. 1 (February 15, 2026): 3400–3408. Accessed June 11, 2026. https://journal.ilmudata.co.id/index.php/RIGGS/article/view/6411.