principal component analysis

例句：

1. 1. In the study of economics, principal component analysis is used to identify key factors that influence economicgrowth.
   在经济学研究中，主成分分析被用来识别影响经济增长的关键因素。
2. 2. The data was analyzed using principal component analysis to determine the most influential variables.
   使用主成分分析对数据进行分析，以确定最具影响力的变量。
3. 3. The researchers used principal component analysis to reduce the dimensionality of the dataset and extractmeaningful insights.
   研究人员使用主成分分析来降低数据集的维度并提取有意义的见解。