Effectiveness evaluation of data link based on the improved grey interval correlation degree

To solve the problem of the fuzzy multiple attribute decision making, the improved grey interval correlation degree was proposed. In the improved method, the attribute values took the form of the interval numbers; it proposed an algorithm for comparing the size of interval numbers and used the combination weighting method to make the weights more reasonable. To evaluate the effectiveness of the system, the concrete steps of the improved method were given. It used analytic hierarchy process (AHP) and Delphi method to establish the scientific and reasonable index system of data link. An example was analyzed and the results show that the improved method is reasonable and feasible. The improved method can be used to rank the limited projects and select the optimal one through dealing with the interval numbers.