Department of Electronic Technology, Armed Police Engineering University, Xian 710000, China;
Department of Electronic Technology, Armed Police Engineering University, Xian 710000, China;
Department of Electronic Technology, Armed Police Engineering University, Xian 710000, China;
Department of Electronic Technology, Armed Police Engineering University, Xian 710000, China;
Social; networks; Dynamic; nodesThree-dimensional; grey; relational; degree;