一种新的证据距离表示方法

摘要

在冲突证据合成之前,确定证据的冲突程度是必须的.为了更加准确地表示证据的冲突程度,提出了一种新的证据距离表示方法.方法以2种方式相反的冲突表示系数为基础,通过KL融舍得到两者距离,进一步通过提出的距离公式.最终得到证据距离.通过具体的冲突证据实验,使得到的证据距离最大,且采用提出算法使得到的证据距离来判断冲突证据与结果,实际结果一致.新的证据距离可以很好地表示证据间的冲突程度,可以进一步处理用于冲突证据的合成.%It is necessary to determin the conflictive degree before the conflictive evidence combination. A new representation is proposed to express the conflictive degree of evidence more accurately. Based on the two opposite conflict expression coefficients, their distances are obtained by KL fusion, and the evidence distance is finally got by the proposed formula. The xperiments of the specific conflictive evidences show that the distance of the conflictive evidence is largest, the conflictive evidence determined by the proposed algorithm agrees with the actual result. New evidence distance can express the conflictive degree between evidences quite well, and further deal with the conflictive evidence combination.