Using Enhanced Russell Model to Solve Inverse Data Envelopment Analysis Problems

Table 2

The data in Example 2.

DMUs	𝑥	𝑦	𝜃^∗	𝜑^∗	ERM efficiency
𝐴	1.00	1.00	0.50	1.00	0.50
𝐵	2.00	4.00	1.00	1.00	1.00
𝐶	5.00	5.00	0.67	1.33	0.50
𝐷	6.00	7.00	0.79	1.35	0.58