Competence Evaluation of Regional Central Cities Based on Principal Component Analysis——Also on the path choice of Lianyungang's building of a middle regional central city

As a leader and promoter of regional economic development,the central cities can improve the coordinate development of regional economy through the leverage role of using the experience of a selected spot to promote the work in the entire area.From the angle of city competitiveness,the research tries to construct a evaluation system of central cities' contribution to regional development,employs the principal component analysis to calculate and sequence by taking the example of 9 coastal middle cities between Shanghai and Qingdao,and reflects quantitatively the functions of accumulation,expansion,service,innovation and comprehensive competitiveness and therefore,offers suggestions for the path choice of Lianyungang's building of a middle regional central city.