Deep Hybrid Models for Forecasting Stock Midprices from the High-Frequency Limit Order Book. - Duc-Phu Nguyen; Nhat-Tan Le; Tien-Thinh Nguyen; Thanh-Phuong Nguyen; Tien-Duc Van; Son-Tu Phan; Khuong Nguyen-An (FDSE (CCIS Volume), 2022)