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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。
As the development of civil aircraft need to learn from similar models of data and experience, it is necessary according to the importance of different types of parameters to measure the similarity of models. It makes sense for each attribute that varies greatly in importance, to quantify the attribute’s weight quantitatively, and to rank the importance of the attribute. First of all, it explores the algorithm of binary subjective weight distribution method, and determines the weight according to the expert’s experience. Then, the objective weight is determined based on the information entropy of the data, and its calculation steps are demonstrated. Finally, the subjective Weight and objective weight together to form the final comprehensive weight. Taking the current main regional aircraft as an example, the calculation and demonstration are carried out and the effect is good.