Design of an GIS-based Investment Heatmap System using Topic Classification and NER. - Trung Tran Van; Kien Vu Sy; Tu Tran Anh; Van Ha Duc; Thang Luu Quang; Phuong Hoang Xuan; Viet Hung Luu; Quang Hung Bui; Son Bao Pham (KSE, 2021)