基于重合度的证据冲突度量方法

Measurement of evidence conflict based on overlapping degree

为更加准确、有效地描述证据间的冲突程度,提出一种新的证据冲突度量方法.该方法通过取小累加证据体之间两个相交为非空集的焦元BPA,得到证据重合度;然后基于其与证据冲突程度的关系,计算出证据冲突大小.实验结果表明,相比经典冲突系数与Jousselme证据距离,所提出的方法更加准确、有效.

In order to measure the conflict degree of different evidences more accurately and credibly,a new measurement of conflict is proposed.In this aproach,by accumulating all the smaller basic probability assignment（BPA） of each two focal elements which have common elements,the new defined overlapping degree is computed,and then the conflict degree can be known based on the relationship between them.The experimental results show that the proposed method is more accurate and credible compared with the classical conflict coefficient and the distance of evidence proposed by Jousselme.