Improved GM (1,1) Grey Prediction Model Based on Background Value of Variable Weight Optimization and Its Application 
ZHANG Li-jie, SHA Xiu-yan, YIN Chuan-cun, DUAN Jun-tao, ZHANG Xin-yi, LI Zi-tong, JIANG Fu-lei
Computer and Modernization . 2021, (01): 1 -6 .