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针对冲突证据的组合问题,提出了一种新的证据组合方法.给出了证据之间焦元距离的定义,在此基础上计算各个证据的支持度.对所有证据进行支持度加权平均,获得一个“参考证据”.利用该参考证据对各个原始证据进行不确定性判定及修正,并利用Dempster-Shafer组合规则进行证据组合.仿真实验表明,该方法能够有效地处理冲突证据,可以得到合理的组合结果.
Aiming at the combination of conflicting evidences, a new method of evidence combination is proposed, and the definition of the focal distance between the evidences is given. Based on this, the support of each evidence is calculated, and the weighted average of all the evidences is obtained. A “reference evidence” .Using the reference evidence to indefinitely determine and correct each original evidence, and use Dempster-Shafer combination rules for evidence combination.Experimental results show that this method can effectively deal with conflict evidence, we can get Reasonable portfolio results.