Dynamic grey target decision making method with three-parameter grey numbers

The method of grey target decision making based on dynamic situation with three-parameter grey numbers is studied, which considers both existing state and development trend of alternatives. In the method, the target distance formulae between every alternative and the positive, negative bull´s eye in every period are given. Next, the target distance formulae between every change series and the optimal, worst change trend bull´s eye are put forward. Furthermore, the comprehensive target distances about the whole expression and change trend of alternatives are separately suggested. In addition, the final target distance is constructed integrating both the two comprehensive distance formulae. Finally, this method is applied to the vendor selection of commercial aircraft industry.