基于复杂网络的贷款竞争网络及其效应  

Competition Network of Credit Market and its Effects on Efficiency,Innovation and Risk: Based on Complex Network Theory

作　　者：陆军[1] 童玉芬 黄嘉 

机构地区：[1]中山大学岭南学院

出　　处：《国际金融研究》2017年第11期44-53,共10页Studies of International Finance

基　　金：国家自然科学基金面上项目"存款利率市场化与中国宏观金融风险研究"(项目编号:71273287)资助

摘　　要：本文在考察银行贷款网络结构特征的基础上,构建贷款加权竞争矩阵,采用二次指派程序(QAP)探讨银行竞争结构的影响因素及其效应。研究发现:第一,银行贷款网络中心性最高的为国有银行,其次为股份制银行和区域性银行,并且整体网络具有小世界特征,各银行节点的联系非常密切,同时核心-边缘结构分析显示,位于核心区域的银行为全部国有商业银行和部分股份制银行;第二,资产规模和净利差对贷款竞争网络存在正向影响,并且相同类型银行之间的竞争压力更小;第三,竞争网络对银行的效率和银行创新存在显著的正向效应,但对银行信用风险并无显著影响。This paper analyses the topological structure of the competition network of 63 banks in view of the complex network theory, and researches its effects on efficiency, innovation and risk with quadratic assignment procedure. The findings include： the state-owned banks enjoy the highest centrality in the competition network, followed by joint-equity banks and local banks in sequence. The network presents marked feature of small world, and the core-periphery analysis demonstrates that the state-owned banks and several joint-equity banks are situated in the core region. As to the influence factors of the competition network, scale and interest margin present a positive effect while the equity-to-asset ratio affects the network negatively, with less competition among banks in the same group. As to its economic results, the competition network affects both efficiency and innovation positively, but has no notable effects on the credit risk.

关 键 词：银行竞争网络 效率 创新 风险 

分 类 号：F832[经济管理—金融学]