A Procedure for Ranking Efficient Units in Data Envelopment Analysis
针对数据包络分析无法区分有效单元的问题，提出一种基于参考技术的改进方法，实现对有效决策单元的排序，便于与参数方法比较。
Data Envelopment Analysis (DEA) evaluates the relative efficiency of decision-making units (DMUs) but does not allow for a ranking of the efficient units themselves. A modified version of DEA based upon comparison of efficient DMUs relative to a reference technology spanned by all other units is developed. The procedure provides a framework for ranking efficient units and facilitates comparison with rankings based on parametric methods.