基于Lance可信度的冲突证据组合方法  

Conflict evidence combination method based on Lance credibility

作　　者：董煜 董雪旺 董红生 周科 DONG Yu;DONG Xuewang;DONG Hongsheng;ZHOU Ke(School of Electrical Engineering,Lanzhou Institute of Technology,Lanzhou 730050,China;School of Automation and Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Jingtaichuan Electric Power Pumping Irrigation Water Resources Utilization Center of Gansu Province,Baiyin 730400,China;State Grid Chongqing Shinan Power Supply Company,Chongqing 401336,China)

机构地区：[1]兰州工业学院电气工程学院,甘肃兰州730050 [2]兰州交通大学自动化与电气工程学院,甘肃兰州730070 [3]甘肃省景泰川电力提灌水资源利用中心,甘肃白银730400 [4]国网重庆市南供电公司,重庆401336

出　　处：《现代电子技术》2023年第17期29-33,共5页Modern Electronics Technique

基　　金：甘肃省高等学校创新基金项目(2022B-247);兰州工业学院青年科技创新项目(2021KJ-13)。

摘　　要：为了有效地解决高度冲突证据融合结果不符合情理的问题,并且充分体现数据间的关联性,提出一种基于Lance距离和相关系数的改进证据组合方法。首先引入证据的Lance距离获取基本信任度,再引入证据的相关系数获取相关度,然后利用负指数函数特性和相关度的正负相关性建立基于Lance距离可信度模型,以可信度作为权重指标修正冲突的证据,最后根据证据组合规则得到融合结果。数例结果验证了该方法能够合理、有效地解决证据冲突,并且相比于其他证据改进方法具有更快的收敛速度。In order to effectively solve the problem that the fusion result of highly conflicting evidence is unreasonable,and fully reflect the correlation between data,an improved evidence combination method based on Lance distance and correlation coefficient is proposed.The Lance distance of evidence is introduced to obtain the basic trust degree.The correlation coefficient of evidence is introduced to obtain the correlation degree.The Lance distance credibility model is established based on the characteristics of negative exponential function and the positive and negative correlation of the correlation degree.The credibility is used as the weight index to correct the conflicting evidence.The fusion result is obtained according to the evidence synthesis rules.The results of several examples show that the method can solve evidence conflict reasonably and effectively,and has faster convergence speed than the other evidence improvement methods.

关 键 词：证据理论 冲突 组合规则 可信度 负指数 相关系数 权重 收敛 

分 类 号：TN911.1-34[电子电信—通信与信息系统] TP391[电子电信—信息与通信工程]