一种新的证据理论合成方法

A New Combination Method of Evidence Theory

针对证据理论中D-S规则无法有效处理冲突的问题,基于同时修正证据源和合成规则的原则,提出了一种新的证据合成方法。该方法把证据距离和相关系数相结合给出证据间相似度的计算公式,在此基础上得到证据可信度并对证据源进行修正,最后按合成规则进行合成。实验表明提出的方法是有效的,与其他方法相比,优势比较明显。

To solve the problem that D-S evidence theory cannot effectively deal with conflict rules,a new evidence combination method is proposed based on the principle of simultaneously modifying source and combination rules of evidence in this paper.The similarity of evidence is calculated by the combination of evidence distance and correlation coefficient.Based on that,the evidence credibility is given to modify the evidence.Finally the combination is finished according to the combination rules.The experimental results show that the proposed method is valid,and compared with other methods.