Sujacka Retno, Rozzi Kesuma Dinata, Novia Hasdyna. Evaluation of chatbot data model in natural language processing using k-nearest neighbor. CoSciTech [Internet]. 2023Apr.30 [cited 2026May8];4(1):146-53. Available from: https://ejurnal.umri.ac.id/index.php/coscitech/article/view/4690