Putra, Rafly Pradana, Awang Hendrianto Pratomo, and Rifki Indra Perwira. 2022. “Text Message Classification Using Multiclass Support Vector Machine on Information Service Chatbot in the Informatics Department UPN ‘Veteran’ Yogyakarta”. Telematika: Jurnal Telematika Dan Teknologi Informasi 19 (3):295-310. https://doi.org/10.31315/telematika.v19i3.7418.