RFM-AR Model for Customer Segmentation using K-Means Algorithm Ali Khumaidi, Herry Wahyono, Risanto Darmawan, Harry Dwiyana Kartika, Nuke L. Chusna and Muhammad Kaisar Fauzy E3S Web of Conf., 465 (2023) 02005 Published online: 18 December 2023 DOI: 10.1051/e3sconf/202346502005