GERT-Q-learning model for intelligent QoS dynamic optimization of Inmarsat STN based on grey clustering of delay and delay variation. - Chenchen Hua; Zhigeng Fang; Yanhua Zhang; Shujun Nan; Shuang Wu; Xirui Qiu; Lu Zhao; Shuyu Xiao (Grey Syst. Theory Appl., 2023)