[1]
R. H. Saputra and H. Sucipto, “Implementation of a WhatsApp-based Canteen Menu Chatbot using TF–IDF and cosine similarity: A case study of employees at Matahari Department Store, Sunrise Mall and Mojokerto”, JPTK, vol. 9, no. 1, pp. 1–20, Feb. 2026, doi: 10.24036/jptk.v9i1.48523.