属性权重确定方式及在衡量机型相似度中的应用

摘要

When developing civil aircraft, we need use the data and experience of similar aircraft for reference. So it is needed to measure the model similarity according to various parameters with different importance. For the attributes with very different importance, it is significant to quantitatively calculate weights of attributes and rank the attribute importance. First, it discusses the algorithm implementation of the subjective weight distribution in dual contrast, and the determination of weight according to expert advise; at last, the objective weight is determined based on the information entropy of data, and demonstrates the calculation steps;finally the subjective weight and objective weight are combined to form the final synthesis weights with a linear combination way. Taking the current major regional aircraft for example, the paper makes the calculation and the demonstration, and the effect is good.%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，定量的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来为基础确定客观权重，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。