Implementation Of K-Nearest Neighbor - Certainty Factor For Expert System Detection Of Idiopathic Thrombocytopenic PurpuraEva Y. Puspaningrum, Budi Nugroho and Dwi Putri SafiraE3S Web Conf., 328 (2021) 04009DOI: https://doi.org/10.1051/e3sconf/202132804009