We review nonparametric estimation of efficiency and productivity, by which we mainly mean activity analysis, or data … envelopment analysis (DEA). The review covers topics that we hope will be of special interest to those doing research in the realm …

in the world. To discuss the problem from economics and business perspectives, this study proposes a new use of DEA (Data … under natural and managerial disposability. The proposed DEA approach evaluates various organizations by the three … efficiency measures such as OE (Operational Efficiency), UEN (Unified Efficiency under Natural disposability) and UENM (Unified …

In this paper we take up the problem of positive, affine data translation within a Data Envelopment Analysis (DEA …