Afidh, Razief Perucha Fauzie, and Syahrial. “Pemodelan Topik Menggunakan N-Gram Dan Non-Negative Matrix Factorization”. Jurnal Informasi dan Teknologi 5, no. 1 (September 2, 2023): 265-275. Accessed November 25, 2025. https://jidt.org/jidt/article/view/385.