Öttl, Alexander; Asmild, Mette; Gulde, Daniel - In: Decision analytics journal 9 (2023), pp. 1-7
Data Envelopment Analysis (DEA) is a widely used tool to estimate relative efficiencies. However, this methodology encounters issues when between-group comparisons with variable returns of scale (VRS) are of interest. In this specification efficiency scores can be undefined when the projection...