Consistent specifications of the allocative inefficiency function in 'cost plus input share equations' systems may be difficult, if not impossible, to find because most plausible ones violate certain reasonable a priori conditions. Moreover, the models to which they lead give rise to highly...

This paper investigated the technical and allocative efficiency of commercial banks in Ethiopia. The analysis was based on unbalanced panel data of 19 banks over the period of 1990-2022. The study has applied shadow pricing approach to estimate and decompose the overall cost inefficiency into...