Multi-output efficiency with good and bad outputs

Multi-output efficiency with good and bad outputs

Cherchye et al. (2013b) introduced a DEA methodology that is specially tailored for multi-output efficiency measurement. The methodology accounts for jointly used inputs and incorporates information on how inputs are allocated to outputs. In this paper, we present extensions that render the methodology useful to deal with undesirable (or “bad”) outputs in addition to desirable (or “good”) outpu...

A Distance Function Model with Good and Bad Outputs

Bad Outputs

This draft chapter, prepared for inclusion in the (prospective) Handbook of Production Economics, Vol. 1 (Theory), edited by Subash Ray, Robert Chambers, and Subal Kumbhakar, analyses recent developments in the modeling of pollution-generating technologies. We first lay out the inadequacies of the traditional, single-equation representations of models of such technologies prominently associated...

Joint Production of Good and Bad Outputs with a Network Application

This paper surveys the literature on the joint production of good and bad outputs. Recently, material balance has arisen as an issue in this literature as a restriction on the technology, which we also address. We use our preferred specification of joint production technology and estimate the efficiency of U.S. electric utilities in a network setting. This network allows to specify two subtechn...

Good and bad fever

Fever is considered a key actor of innate immunity aimed to fight infection. A new investigation reports an association of the use of antipyretic drugs with poorer outcome among patients with sepsis. In contrast, high temperature in non-infectious intensive care patients is associated with higher mortality.