A Study on Bank Efficiency and Its Impact Factors—International Comparison of Banking Industry
基于2004-2008年跨国数据，用随机前沿模型比较中外银行利润效率，发现2006年后多数国家银行技术效率下降，而中国银行效率自2007年起提升，且效率与全球系统重要性呈非线性关系。
Based on the cross-country data from 2004～2008,this paper implements the stochastic frontier model to study and compare the profit efficiency of major banks both in China and other countries.The major findings are the following:(1) Since 2006,technical efficiency of banks of most countries in our sample has declined, especially during the period of 2007 ~2008.On the contrary,Chinese banks' efficiency was at a relative low level(before 2006) but has improved over time since 2007.(2) There is non-linear relation between banks' efficiency and its global systematic importance.As banks' global systematic importance rises,the profit efficiency first rises and then goes down when systematic importance reaches a certain degree.Also the authors study the impact factors of profit efficiency and get some significant conclusions.