Surbakti, Eunike, Andes Suciani, Philipus Silaen, and Septian Adibowo. 2021. “Pengenalan Aktivitas Manusia Melalui Analisis Data Gerakan Smartphone”. Ultimatics : Jurnal Teknik Informatika 13 (1), 58-65. https://doi.org/https://doi.org/10.31937/ti.v13i1.2044.