X -EiEciency in China's Banking Sector; An FDH-based Approach
使用自由处置壳方法估计1999-2003年中国银行业的X效率，发现国有商业银行平均效率高于其他银行，与DEA或SFA结果相反，表明生产技术凸性假设对效率估计有显著影响。
The paper uses a Free-Disposal-Hull-based approach to estimate the X-efficiency of China's banking sector in the period from 1999 to 2003. As it finds, comparing with all of the investigated efficiency measures (i. e. input-technical efficiency, output-technical efficiency, input-allocative efficiency, output-allocative effi- ciency, cost efficiency and profit efficiency) the efficiency of commercial banks estimated by FDH are more than those estimated by other approaches, and that the industry-averaged efficiency is increasing year by. year in the sample period. The paper also finds that state-owned commercial banks are more efficient on average than . other commercial banks, which is contrary to the generally gotten results based on DEA or SFA and thus implies that the convexity of production technology postulation may have substantial influence for the estimation of the efficiency of commercial banks.