Group Decision Making Method Based on Linguistic Information for Selection of Booksellers in University Library

In this paper, using uncertain linguistic Information to deal quantitatively with the selection and ranking of booksellers about public bidding for purchases of books in university library. Firstly, linguistic evaluations are presented by experts according to their linguistic preference scale, and are normalized. Then the linguistic evaluations are aggregated utilizing ULA operator, and synthetical linguistic evaluation of group decision making is aggregated using ULOW operator. The order of booksellers is obtained according to complementary matrix theory. Finally, an example is given to show the practicability and validity of this method.