一种新的特征评价方法及在高铁故障中的应用  

A new feature evaluation algorithm and its application in fault of high-speed railway

作　　者：杜静[1] 蔡震震 蒋鹏[1] 金炜东[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《电子技术应用》2015年第9期153-156,共4页Application of Electronic Technique

基　　金：国家自然科学重点基金项目(61134002)

摘　　要：提出一种基于Murphy改进的D-S算法作为融合规则的多准则特征评价方法(MCFE-DSEC)。该方法融合不同的单一评价准则,对特征作出综合评价,去掉冗余特征,以提高分类准确率。将该方法应用于高速列车故障数据中,实验结果表明,与Borda-Count方法和单一评价准则相比,MCFE-DSEC方法对各个速度下的特征都能作出有效的评价,适用性强且准确率高。A multi-criterion feature evaluation algorithm （MCFE-DSEC） is proposed, which takes the improved D-S theory by Murphy as the fusion rule. MCFE-DSEC aggregates a collection of different single criteria, making a comprehensive evaluation of features and removing redundant features to improve classification accuracy. The multi-criterion feature evaluation algorithm is applied to the high-speed train fault data. The obtained results show that compared with the Borda-Count method and single criteria, MCFE-DSEC method can evaluate the features at every speed more effectively and is more adaptable with higher accuracy.

关 键 词：特征评价 多准则融合 D—S证据理论 证据冲突理论 故障分类 

分 类 号：U279[机械工程—车辆工程] TP391[交通运输工程—载运工具运用工程]