Ningrattama, I. and Alfian, A. N. (2026) “Pengembangan chatbot informasi PPDB KB & TK As Salam menggunakan TF-IDF dan Cosine Similarity”, CHAIN: Journal of Computer Technology, Computer Engineering, and Informatics, 4(4), pp. 593-605. doi: 10.58602/chain.v4i4.400.