Note—A Note on “The Use of Categorical Variables in Data Envelopment Analysis”
对Banker和Morey的DEA模型提出一个变体，用于处理可控序数输出，允许将决策单元与处于相同或更高序数输出水平的其他单元进行比较。
A variant of Banker and Morey's (Banker, R. D., R. C. Morey. 1986. The use of categorical variables in data envelopment analysis. Management Sci. 32(12, December) 1613–1627.) DEA model for controllable ordinal outputs. As opposed to the original model, this version allows the comparison of a Decision Making Unit (DMU) to other DMU's operating at equal or higher levels of the ordinal outputs.