Comparisons and evaluations of alternative approaches to the treatment of congestion in DEA

Article Abstract:

Research is presented concerning the use of two approaches in data envelopment analysis for the analysis and identification of congestion. An evaluation of both approaches is undertaken and discussed.

Operations research, Management science, Evaluation, Industrial productivity

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Note: alternative treatments of congestion in DEA - a response to the Cherchye, Kuosmanen and Post critique

Article Abstract:

A response to the critique by Cherchye, Kuosmanen and Post of the paper entitled "Comparisons and evaluations of alternative approaches to the treatment of congestion in DEA" published in the European Journal of Operational Research 132 (2001) 75-80 is presented.

Usage, Mathematical models

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A note on returns to scale in DEA

Article Abstract:

A suggestion proffered in the 1992 article by R.D. Banker and R.M. Thrall on estimation of returns-to-scale using data envelopment analysis is modified to avoid the need to examine all alternate optima to be able to reach a decision. Use of the proposed modified approach eliminates the need for assuming that the decision making units being analyzed attained efficiency as well as eliminates the infinite solutions which Banker and Thrall contend are possible with their formulations.

Decision-making, Models, Decision making

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