Improved DS method based on conflict evidence correction
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Automatic Test and Control Institute, Harbin Institute of Technology, Harbin 150001, China

Clc Number:

TP181

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    Abstract:

    DempsterShafer(DS)evidence theory is widely used in the field of uncertainty reasoning and information fusion. However, there is also a problem of counterintuitive results in highly conflictive evidence combination. To solve this problem, an improved DS method based on conflict evidence correction is proposed. Firstly, the weight of each evidence is determined by the evidence distance of each evidence and average evidence. Secondly, conflict evidence is determined by the average weight, which is the threshold, and then it is discounted according to its weight. Dempster rule is utilized to combine conflict with other original evidences to get final results. The simulation results show that the proposed method can effectively improve the typical problem of classic DS evidence theory. Compared with other methods, the proposed method is simple, effective and has fast convergence and high reliability when dealing with both low conflict evidences and high conflict evidences.

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History
  • Received:
  • Revised:
  • Adopted:
  • Online: November 06,2017
  • Published: