Ranking DMUs by Calculating the Interval Efficiency with a Common Set of Weights in DEA

Table 2

The interval efficiencies of Entani et al.’s model [2] and Azizi’s model [6] and the relative efficiencies for 10 DMUs.

DMU	Optimistic efficiency (model 2)	Pessimistic efficiency (model 3)	Interval efficiency (Entani et al.’s model [2])	Interval efficiency (Azizi’s model [6])	Rank; (Azizi’s method [6])
A	1.0000	1.0000	[0.1428, 1.0000]	[0.1814, 1.0000]	3
B	0.5217	1.0000	[0.2857, 0.5217]	[0.1814, 0.5217]	10
C	0.8235	1.2308	[0.2857, 0.8235]	[0.2233, 0.8235]	6
D	0.6522	1.1250	[0.3750, 0.6522]	[0.2041, 0.6522]	9
E	1.0000	1.6923	[0.4285, 1.0000]	[0.3070, 1.0000]	1
F	0.6957	1.0000	[0.2500, 0.6957]	[0.1814, 0.6957]	8
G	0.9565	1.7500	[0.5714, 0.9565]	[0.3175, 0.9565]	2
H	0.8261	1.1000	[0.2500, 0.8261]	[0.1995, 0.8261]	7
I	0.9565	1.2000	[0.2500, 0.9565]	[0.2177, 0.9565]	5
J	1.0000	1.0000	[0.1250, 1.0000]	[0.1814, 1.0000]	3