| Citation: | YANG Yuanzhi, ZHOU Zhongliang, LIU Hongqiang, et al. Threat evaluation method of air target based on information entropy and rough set[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(10): 2071-2077. doi: 10.13700/j.bh.1001-5965.2017.0768(in Chinese)
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Aimed at the problem that rough set (RS) theory cannot deal with information system without decision when evaluation issues are processed, an air target threat evaluation model based on information entropy (IE) and RS is put forward. The model adopts IE method to calculate the attribute weights, chooses the attribute with maximal weight to replace the decision attribute, and establishes a complete RS decision information system. Furthermore, the data is discretized via attribute importance method. Then attribute reduction and weight calculation have been realized with decision identification matrix, and the threat degree of air targets could be quantitatively evaluated. The model provides rough set theory a broader application field, reduces the requirement for prior information as well as the influence of subjective factors. The simulation results show that the proposed method can realize an effective evaluation for air target.
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