Abstract
Subway passenger flow refers to the number of people entering the subway per unit time, which is an important indicator reflecting the popularity and value of the subway. This paper selects Zhengzhou Metro Line 1, which is currently the most mature and has the most complete passenger flow data in Zhengzhou City. First, using SPSS software to perform principal component analysis on the original data. Second, using MATLAB software to further process the data processed by principal component analysis. Finally, through the establishment of a gray correlation model, the results of Lanzhai Station on Zhengzhou Metro Line 1 are obtained that its import and export passenger flow has the most significant impact on the passenger flow of Zhengzhou Metro Line 1.
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