Rosni Lumbantoruan, Paulus Simanjuntak, Inggrid Aritonang, and Erika Simaremare. 2022. “TopC-CAMF: A Top Context-Based Matrix Factorization Recommender System”. Jurnal Nasional Teknik Elektro Dan Teknologi Informasi 11 (4), 258-66. https://doi.org/10.22146/jnteti.v11i4.5399.