基于资源型两阶段DEA模型的中国商业银行效率实证分析

Research on the Efficiency of Commercial Banks in China： A Resource-based Two-Stage DEA Approach

本文构建了中国银行业资源型两阶段DEA模型，将商业银行资金运用过程分解为资金筹集和资金收益两个相互关联的子过程，综合地度量了商业银行效率。文章还将平滑自助法与DEA方法相结合，对银行效率值进行了修正并构造了修正值的置信区间。通过对中国银行业2004--2008年的效率进行实证研究，本文论证了DEA模型得出的结果高估了中国银行业的真实效率，国有银行与股份制银行相比，资金筹集效率更低，而资金收益效率更高；股份制银行与国有银行资金运用效率的差异越来越小。

This paper constructs a resource-based two-stage DEA model by dividing the over- all fund utilization process of China＇s banking into two sub-processes, fund raising and fund profit- ability process. Using the data during 2004--2008 our empirical study finds that （ 1 ） traditional DEA approach tends to highly overestimate the efficiency of China＇s banking ; （2） the ＇ BIG FOUR＇ shows a lower fund-raising efficiency than the joint-venture commercial banks though both maintain an upward trend, while the former is showing a greater advantage in fund-profiting; （3） the overall fund utilization efficiency gap is getting smaller and smaller between the ＇ Big Four＇ and the jointventure commercial banks.