In this paper we contrast the DEA and activity analysis approaches by Charnes, Cooper and Rhodes (1978) and Shephard (1970), respectively. We show that by appropriately normalizing Shephard's output price model the two approaches coincide. Copyright Kluwer Academic Publishers 2002

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 of agriculture. We also include a brief...

This paper builds on earlier efforts to integrate preferences into a DEA model. Rather than including an explicit utility function as a constraint to a DEA problem as in Färe et al. (2002), here we use the notion of dominance to identify a ’¡Ærevealed’¡Ç indifference curve, which is...

This paper provides a brief history of the Malmquist productivity index and its decomposition. Theoretical and empirical issues related to the index are discussed along with directions for future research. Copyright Kluwer Academic Publishers 2003

The production of desirable (good) outputs is frequently accompanied by unintended production of undesirable (bad) outputs. If two or more of these undesirable outputs are produced as byproducts, one may ask: ‘Which bad is worst?’ By worst we mean which bad inhibits the production of...