In order to modify the regulations of safety management and improve the quality of safety information in civil aviation, the balance scored card (BSC) method is modified to develop an index system of performance management for safety information.The logical relation of four levels in BSC is adjusted from traditional progressive to parallel progressive.To determine the weights of indices, the methods of analytic hierarchy process (AHP) and variable precision rough set (VPRS) are used to obtain subjective and objective weights, respectively.The subjective and objective weights are optimized by principle of minimum relative entropy (PMRE).This new index system is validated by an improved TOPSIS method.The results show that, the quality of safety information is the key factor to evaluate the performance.Its optimal weight is 0.407 and accounts for 40.66% of the total weight.One of the secondary indices, the specification degree of safety information weight, contributes the largest ρi.Its optimal weight is 0.288 and accounts for 11.97% of the total weight, indicating the largest reliability and validity for the performance management system.Hence, the proposed index system can be applied to actual processes of performance management for safety information in order to improving the level of management as well as the quality of safety information in civil aviation.
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