飞机生存力评价指标之间相关性的解决策略

A Method of Solving the Correlation of Evaluation Indices of Aircraft Survivability

针对以往构建的生存力评价指标体系中评价指标的合理性缺乏考证的问题,提出了评价指标之间潜在相关性的处理方法。以文献中的生存力数据为例,首先采用模糊聚类的方法,在不同置信水平下把原有的10个评价指标重新分类,依据定义的有效性指标选择出有效性最高的分类结果为4类;对新的4个综合评价指标进行因子分析,验证了模糊聚类的结果,并得到了新指标与原指标的数值关系。结果表明,相较于原指标体系,新指标体系简单有效,聚类方法合理,聚类效果良好。该方法可以用于生存力评价指标体系的构建。

To solve the lack of rationality in the aircraft survivability evaluation index system,the method of solving the potential correlation among the evaluation indices is proposed.Taking the survivability data in the literature for example,under different confidence level we use fuzzy cluster method to classify again the original 10 original evaluation indices,according to the efficient index defined,the best number of the cluster is 4.Then the 4 new evaluation indices are analyzed by factor analysis to prove the result of fuzzy cluster,thus the relation between the new indices and the original indices is acquired.The result shows that the new index system is simple and effective,compared with the old one,its fuzzy cluster method is rational and its effect is good,so the method can be applied in the establishment of evaluation index system for aircraft survivability.