This invention belongs to the field of
data processing and group decision-making technology, specifically relating to a
social network group decision-making method, method, and apparatus for selecting government services. The method involves acquiring initial preference information of multiple users for multiple government service options, initial trust relationships between users, and attribute information of the government service options; reconstructing a complete global trust matrix through a dynamic trust decay mechanism; dynamically identifying user behavior states into four multi-
granularity states; adjusting the aggregation weights of user preferences; obtaining
consensus preference values for each government service option; and generating a recommendation
ranking or selection result for the government service options.