Sri Lestari, M. Elrico Afdila, and Yan Aditiya Pratama. 2023. “Imputation Missing Value to Overcome Sparsity Problems in The Recommendation System”. Jurnal RESTI (Rekayasa Sistem Dan Teknologi Informasi) 7 (6): 1285-91. https://doi.org/10.29207/resti.v7i6.5300.