Group's Influence Value in Logistic Regression Model and Gradient Boosting Model. - Quang-Vinh Dang 001; My-Linh Tran; Minh-Hung Dang; Thi-Minh-Trang Tran; Huu-Nghia Nguyen; Thi-Minh-Hue Cai; Thanh-Duyen Phan (ICICT (1), 2021)