关键词: 威胁评估, 粗糙集(RS), 指标重要性相关(CRITIC)法, 决策规则, 不确定信息

Abstract: Aiming at the problem of air combat target threat assessment under uncertain information, a threat assessment model based on Rough Set (RS) and Criteria Importance Though Intercrieria Correlation (CRITIC) method is proposed. Firstly, the model determines the target threat value under accurate information by CRITIC and the optimal segmentation set is solved by Mining Data (MD) heuristic algorithm. After the threat value is discretized, it replaces the decision attribute in the rough set information system. Secondly, based on the complete rough set decision information system, attribute reduction and minimum decision rules extraction of target threat assessment are realized by decision matrix. Finally, the export rules are applied to target threat assessment under uncertain information. Simulation results show that proposed method can achieve the target threat assessment in the absence of information, and reduces the influence of subjective factors and prior knowledge, and expands the application of rough set theory.

Key words: threat assessment, Rough Set (RS), Criteria Importance Though Intercrieria Correlation (CRITIC) method, decision rule, uncertain information