Systems Engineering and Electronics ›› 2018, Vol. 40 ›› Issue (3): 590-594.doi: 10.3969/j.issn.1001-506X.2018.03.16

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Method for determining initial spares varieties of rough set based on incomplete information

DONG Xiaoxiong, CHEN Yunxiang, CAI Zhongyi, MENG Xiangfei   

  1. College of Equipment Management and Safety Engineering, Air Force Engineering University, Xi’an 710051, China
  • Online:2018-02-26 Published:2018-02-24

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Abstract:

To solve the problem of initial spare parts varieties determination, this paper puts forward a method for determining the initial spares varieties of the rough set based on incomplete information. In terms of key, expendable, replaceable, economical, and accessible, the main reasons for the initial spares varieties are analyzed comprehensively. The merits and drawbacks of the classical rough set model are comparatively analyzed and the weighted threshold rough set model is built. The attribute weight determination method is put forward based on system information without introducing the knowledge outside the system. According to the compatibility relation of the weighted threshold value, the upper and lower approximation sets of the rough set can be confirmed and the classification of decision rules can be obtained. The effectiveness of the model is explored with examples, and it shows that the method can improve the accuracy of spare parts varieties.

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