Ida Afriliana, Nurohim. Classification of Teachers and Lecturers Engagement on Webinar during the Pandemic using the Utilization of Big Data. IJSTM [Internet]. 2021 May 28 [cited 2026 Jul. 18];2(3):673-84. Available from: https://ijstmjournal.com/index.php/ijstm/article/view/224