摘要：To solve the multi-attribute decision making (MADM) problems with Pythagorean uncertain linguistic variable, an extended bi-directional projection method is proposed. First, we utilize the linguistic scale function to convert uncertain linguistic variable and provide a new projection model, subsequently. Then, to depict the bi-directional projection method, the formative vectors of alternatives and ideal alternatives are defined. Furthermore, a comparative analysis with projection model is conducted to show the superiority of bi-directional projection method. Finally, an example of graduate’s job option is given to demonstrate the effectiveness and feasibility of the proposed method.
关键词：multi-attribute decision making; projection model; bi-directional projection model; Pythagorean uncertain linguistic variable multi-attribute decision making ; projection model ; bi-directional projection model ; Pythagorean uncertain linguistic variable
