【摘要】 对DEA中决策单元的有效值,本文给出了求它的二个定理,并给出了在导入新的决策单元后其保序的充分条件,最后举例说明这条件不成立时的结果.更多还原

【Abstract】 For efficiency indexes of decision making units(DMUs) in DEA,the paper gives two theorems to find out them,and presents the sufficient condition on their rank order remaining unchanged after a new DMU is introduced.As the condition is unsatisfied two examples are taken in the end to illuminate the result after a new DMU is introduced.更多还原