Abstract:

The Dempster-Shafer evidence theory is widely used in the field of information fusion. To suppress the illogical results when using Dempster’s combination rule, a modified evidence combination rule based on local conflict elimination is proposed. First, based on Vague set and layer by layer recurrence algorithm, the conflicting degree between available bodies of the evidence is measured by a new representation method of evidential conflict. In each combination step, according to the conflicting degree, the elimination of the local conflict is judged. Then the distance method is used to modify the bodies of the evidence. Finally, the combination result can be obtained by the Dempster’s combination rule. Some numerical examples show the efficiency of the proposed rule.