Scale Efficiency in DEA and DEA-R with Weight Restriction
الموضوعات : International Journal of Data Envelopment Analysis
M. Nazari
1
(Department of Applied Mathematics, Science and Research Branch Azad University, Fars, Iran.
Department of Applied Mathematics, Shiraz Branch Azad University, Shiraz, Iran.)
M.R. Mozaffari
2
(Department of Applied Mathematics, Science and Research Branch Azad University, Fars, Iran.
Department of Applied Mathematics, Shiraz Branch Azad University, Shiraz, Iran.)
J. Gerami
3
(Department of Applied Mathematics, Science and Research Branch Azad University, Fars, Iran.
Department of Applied Mathematics, Shiraz Branch Azad University, Shiraz, Iran.)
الکلمات المفتاحية: Weight Restrictions, DEA, DEA-R,
ملخص المقالة :
In data envelopment analyze (DEA) the scale efficiency in the input-oriented CCR model is less than or equal to the scale efficiency in DEA based on the fractional analysis (DEA-R). Also, the scale efficiency in case of multiple inputs and one output and vice versa the scale efficiencies are equal in DEA and DEA-R. In this paper, first, DEA-R model with weight restrictions when there is relative data is recommended. Second, the scale efficiencies in a constant return to scale are compared with each other in DEA and DEA-R models. At the end, a numerical example is provided for the proposed models with 27DMUs.
