Study on Economic Impact Indicators of Different Cities Based on Principal Component Analysis and Cluster Analysis

Abstract

Economic strength has always been an important indicator for evaluating a county and a city. In this paper, a total of 19 indicators are used to construct an evaluation index system for regional economic. Taking 21 cities and autonomous prefectures in Sichuan Province as samples, three principal component indexes are selected to reflect most of the information of the original indexes, and the ranking of their comprehensive economic strength is obtained. According to the cluster analysis model, the 19 selected economic impact indicators are divided into five categories through correlation. In each sub-category, combined with principal component analysis, the ranking of cities is obtained, and the final ranking of Sichuan's comprehensive economic strength is given by comparing the results of two rankings. Then we gave Suggestions for adjustment and development.