属性权重确定方式及在衡量机型相似度中的应用  

The Approach to Weight Determination and Its Application in Measurement of Similarity Between Aircraft

作　　者：杨卫东 刘若晨[2] 蔡景[2] 

机构地区：[1]中国东方航空股份有限公司工程技术公司,上海200335 [2]南京航空航天大学民航学院,江苏南京210016

出　　处：《飞机设计》2014年第5期58-61,共4页Aircraft Design

基　　金：国家自然科学基金(61079013);国家自然科学基金与中国民航联合基金重点项目(60939003);江苏省自然科学基金(BK2011737)资助

摘　　要：由于民机研制时需要借鉴类似机型的数据和经验,因此需要根据重要性不同的各类参数来衡量机型的相似性。对于各个重要性差别很大的属性,定量地计算属性的权重和对属性的重要性进行排序是很有意义的。首先探讨了二元对比的主观权重分配法的算法实现,根据专家经验来确定权重;然后以数据的信息熵为基础来确定客观权重,并论证了其计算步骤;最后用线性组合的方式把主观权重和客观权重结合起来形成最终的综合权重。以目前主要的支线飞机为例,进行了计算演示,效果良好。Due to development civil aircraft need learn from experience of similar other aircrafts, it＇s necessary to measure similiarity of aircraft with all kinds of parameters whose importance are different. For difference among parameters is large, it＇s significant to calculate quantificationally weight of property and sort property by importance. In the paper, the subjective weight distribution method with binary comparison has been discussed, which determines weights by experience of experts. Thus, based information entropy, objective weights and its calculation step are developed. At last, linear combination the subjective weight with objective weight form final weights. Taken current regional aircrafts as an example, the algorith behave well.

关 键 词：权重 属性 相似度 二元对比 熵 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程] TH11[自动化与计算机技术—控制科学与工程]