基于SNA方法的文化贸易网络结构特征分析——以G20国家为例

Structural Characteristics Analysis of Cultural Trade Network Based on SNA Method——Taking G20 Countries as an Example

利用社会网络分析法(SNA),从网络密度、中心度以及"核心-半边缘-边缘"三个维度对2002-2015年间G20国家文化产品贸易网络的结构特征进行分析。结果发现:不同时间段内G20国家文化产品贸易密度呈现出差异化的特征,2002年至2008年贸易网络密度快速上升,2009年受到金融危机的冲击,网络密度大幅下降,2010年至2015贸易网络密度逐渐趋于稳定;中美两国中心度始终处于前两位,印度、印度尼西亚、土耳其、南非与阿根廷等国中心度大幅上升;基于2002年、2015年两个截面的"核心-半边缘-边缘"结构对比,核心国家与边缘国家数量有所减少而半边缘国家数量有所增加,说明贸易体系从两极分化发展成为一种均衡状态。

Using social network analysis( SNA),the structural characteristics of G20 national cultural product trade network from2002 to 2015 are analyzed from the three dimensions of network density,centrality and"core-half-edge-edge". The results show that:First,the trade density of cultural products in G20 countries shows different characteristics in different time periods. From 2002 to2008,the density of trade network increased rapidly. In 2009,due to the impact of the financial crisis,the density of the network dropped sharply. Trade network density gradually stabilized from 2010 to 2015. Second,The centralities of China and the United States have always been in the top two,and the centralities of India,Indonesia,Turkey,South Africa and Argentina have risen sharply.Third,based on the"core-half-edge-edge"structure comparison of the two sections of 2002 and 2015,the core number of countries and edgecountries has decreased and the number of half-edge countries has increased,indicating that the trading system has evolved from polarization to a balanced state.