This paper discusses why the disconnection between formal structures and theoretical content in economic model building can lead to undesirable consequences. By contrast, linking formal and verbal contents by means of coherent and relevant interpretations is worth the effort: it is a relatively...

Generalized Efficiency Measures (GEMS) for use in DEA are developed and analyzed in a context of differing models where they might be employed. The additive model of DEA is accorded a central role and developed in association with a new measure of efficiency referred to as RAM (Range Adjusted...

In this paper we evaluate the financial performance of virtually all of the branch offices of a large European savings bank for a recent six-month accounting period. We employ a complementary pair of nonparametric techniques to evaluate their financial performance, in terms of their ability to...

The authors assess the performance of professional tennis players from the perspective of the efficiency of their game using data envelopment analysis (DEA). This research can complement the information provided by the Association of Tennis Professionals (ATP) ranking, which is concerned with...