Radial and non-radial DEA models are distinguished on the basis of the presence of slacks. Viewing slacks as a possible source of inefficiency, this paper makes an empirical attempt to assess the relative strengths of these two sets of models in examining the total factor productivity change and...

This paper briefly reviews the existing methods of capacity utilization in nonparametric framework from economic perspectives, and then suggests an alternative in the light of limitations therein. In the spirit of work by Coelli et al. [Coelli, T.J., Grifell-Tatje, E., Perelman, S., 2002....

Grifell-Tatje and Lovell (Grifell-Tatje, E., Lovell, C.A.K., 1999. Profits and productivity. Management Science 45, 1177-1193) made significant contributions to the literature on the extended radial DEA framework by decomposing profit change into six mutually exclusive components. Their...