A New Fusion Method for Conflicting Evidence

摘要

A new conflicting evidence fusion method is proposed for the deficiency of Dempster＇ s rule which can not fuse the conflicting evidence. Evidence is divided into three categories： believable evidence, non-conflicting evidence and con- flicting evidence. The influences of these three categories of evidences on fusion results when discounted are analyzed respectively. On these bases, the evidence distance and the conjunctive conflict are utilized in sequence to recognize the be- lievable evidence and non-conflicting evidence. The discounting factors of these two categories of evidences are set to one, which keeps the evidences support the true hypothesis to the greatest degree, and makes the fusion results focus onto the true hypothesis. Examples of some missile fault diagnosis show that the new method can effectively fuse the conflicting evidences, and is suited to fuse the relievable evidences. The new method improves the reliability and rationality of fusion re- sults compared with traditional methods.