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基于效率的资本服务概念,本文分三种资产类型测算了我国2003-2014年38个工业部门的资本投入状况,并与传统的财富性资本存量结果进行对比。研究发现,财富性资本存量方法会不同程度地低估各行业的实际资本投入,从而干扰部门生产效率的准确评价。根据资本投入估计的新结果,经过模型设定检验,进一步应用Bootstrap-DEA方法测算各行业的投入产出效率,并给出相应的置信区间。结果表明:在其他投入和产出不变的条件下,根据财富性存量计算的资本投入会导致部门产出效率被高估,基于资本服务框架估计的生产效率具有更好的精确度与合理性。
Based on the concept of efficient capital services, this paper estimates the capital investment of 38 industrial sectors from 2003 to 2014 in three types of assets, and compares them with the results of traditional wealth capital stocks. The study finds that the method of wealth capital stock will underestimate the actual capital investment of different industries to different extent, so as to interfere with the accurate evaluation of the department’s production efficiency. According to the new result of capital investment estimation, through the test of model setting, we further use the Bootstrap-DEA method to measure the input-output efficiency of various industries and give the corresponding confidence intervals. The results show that under the condition of other input and output remain constant, the capital input calculated based on the wealth stock will result in the sector output efficiency being overestimated, the production efficiency estimated based on the capital service framework has better accuracy and rationality .