关键词: D-S证据理论, 证据冲突, Vague集, 折扣因子

Abstract: In order to solve the phenomenon of one vote veto and weak decision evidence in anti conflict reasoning under low conflict situations, a conflict evidence synthesis method of effective discount evidence sources is proposed. Firstly, according to the belief function and likelihood function of evidence, the similarity between evidences is obtained. Then, the degree of support between evidences is obtained, and the discount factor is determined. Finally, the Dempster combination rule is used to synthesize the evidence source corrected by discount factor. The results of numerical examples validate that the improved evidence combination method can effectively deal with the conflict of evidence.

Key words: D-S evidence theory, evidence conflict, Vague set, discount factor