Combinatorial Efficiency Evaluation: The Knapsack Problem in Data Envelopment Analysis

Table 5

Combinatorial efficiency evaluation of Example 1.

CDMU	Input	Output 1	Output 2	Combinatorial efficiency
				Cook and Green’s model	Our proposed model
{1,1}	2	2	10	1	Impractical
{2,2}	2	6	8	1	Impractical
{3,3}	2	10	4	1	Impractical
{1,2}	2	4	9	1	1.2857
{2,3}	2	8	6	1	1.1111
{3,4}	2	9	3	0.9000	1.1250