基于模糊聚類的山東省各市經(jīng)濟競爭力的分類研究
[Abstract]:Fuzzy clustering analysis is an important research direction of clustering analysis. In real life, we often encounter the situation that the characteristics of things are not clear or the boundaries are not clear, and fuzzy clustering analysis is proposed to solve this kind of problems. As a branch of multivariate statistical analysis, it has been widely used in many fields, such as economy, society, transportation, medicine, meteorology, biology and so on, and has become an important tool in data analysis. Since the reform and opening up, the economy of Shandong Province has been developing rapidly, but the phenomenon of economic imbalance between cities in Shandong Province is becoming more and more serious. In order to study the differences and similarities of economic competitiveness among prefecture-level cities, and then make clear the reasons for the economic strength of each city, this paper classifies the economic competitiveness of each prefectural city in Shandong Province. Because some indexes of economic competitiveness are fuzzy index, this paper improves the compactness factor, separation factor and overlap factor by studying the fuzzy clustering validity test index put forward by predecessors. A new fuzzy clustering validity index is presented. The optimal clustering number is determined on the basis of the new fuzzy clustering validity index, and the fuzzy C-means algorithm is optimized with principal component analysis. In this paper, we first set up an index system to study the economic competitiveness. We used the principal component analysis (PCA) method to analyze the raw data collected, and obtained the ranking of the comprehensive economic competitiveness of cities at the prefectural level. Finally, the principal component factor score obtained after dimensionality reduction is input into the fuzzy C-means algorithm as the original data, and the value of the new fuzzy clustering validity index is calculated to determine the best classification: the first category, Jinan, Qingdao, Zibo, Yantai City, Weifang City; second kind, Zaozhuang City, Dongying City, Jining City, Taian City, Weihai City, Rizhao City, Laiwu City, Linyi City, Dezhou City, Liaocheng City, Binzhou City, Heze City. Based on the classification results and principal component analysis, the related analysis and suggestions are given.
【學(xué)位授予單位】:山東大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2016
【分類號】:TP311.13
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