Journal of Northeastern University(Natural Science) ›› 2021, Vol. 42 ›› Issue (9): 1246-1253.DOI: 10.12068/j.issn.1005-3026.2021.09.005

• Information & Control • Previous Articles     Next Articles

Multi-source Data Fusion Method Based on Difference Information

WANG Shu, REN Yu, GUAN Zhan-xu, WANG Jing   

  1. School of Information Science & Engineering, Northeastern University, Shenyang 110819, China.
  • Revised:2020-01-04 Accepted:2020-01-04 Published:2021-09-16
  • Contact: WANG Shu
  • About author:-
  • Supported by:
    -

Abstract: D-S evidence theory can be applied to the field of multi-source data fusion. However, counter-intuitive results may come out when handing highly conflicting evidences. In order to solve this problem, a modified fusion method with the concept of difference information(DI)was proposed. First, information entropy indicated the relative importance of evidence, and divergence was used to obtain the credibility of evidence. Then, the evidence difference was optimized by the credibility of the evidence to obtain difference information(DI). The final weight of the calculated data was used as the basic probability distribution in D-S evidence theory for decision-making. Compared with other methods in dealing with conflicting evidence, consistent evidence, and different amounts of evidence, the proposed method converges faster and has higher accuracy. The application examples of fault diagnosis show that the proposed method has less uncertainty and is better than other existing methods.

Key words: difference information(DI); D-S evidence theory; multi-source data; information fusion; decision-making

CLC Number: