Atmaja, Fajar Surya. “Peningkatan Layanan Customer Service Melalui Chatbot Menerapkan Algoritma Text Mining Dan TF-IDF”. Bulletin of Data Science 4, no. 2 (February 28, 2025): 57-69. Accessed June 9, 2026. https://ejurnal.seminar-id.com/index.php/bulletinds/article/view/6416.