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基于总体的主成分分析方法 ,对天津市 18个地区的工业发展综合实力数据进行了实证分析 .通过检验和计算 ,取合并样本相关阵的两个最大特征值对应的特征向量作为新的主成分的系数 :PRIN 1表示各地区的工业综合发展实力 ;PRIN 2表示各地区工业发展的效益.这两个主成分可以作为地区工业发展综合实力和效益的统一度量 .
Based on the overall principal component analysis method, an empirical analysis was conducted on the industrial development comprehensive strength data of 18 regions in Tianjin. Through inspection and calculation, the feature vectors corresponding to the two largest eigenvalues of the associated sample correlation matrix were taken as the new principal components. The coefficient: PRIN 1 indicates the strength of industrial comprehensive development in each region; PRIN 2 indicates the benefits of industrial development in each region. These two principal components can be regarded as a unified measure of the comprehensive strength and benefits of regional industrial development.