Common set of weights in DEA-R models

This paper uses the common set of weights (CSW) method to control the total weight flexibility in the DEA-R and proposes a CSW DEA-R method. In the evaluations of DMUs by CSW DEA-R method each input and output ratio takes the same weight in all DMUs. The proposed CSW DEA-R method improves the discrimination power of the DEA-R method. Then, we compare the CSW DEA-R method with the DEA-R and DEA approaches in the literature; and demonstrate the applicability of the proposed method with an empirical example.