The “weak-link” approach to network DEA for two-stage processes

Dimitris K. Despotis, Gregory Koronakos and Dimitrios Sotiros

European Journal of Operational Research, 2016, vol. 254, issue 2, 481-492

Abstract: We introduce in this paper a new definition for the overall system efficiency in network DEA, which is inspired by the “weak link” notion in supply chains and the maximum-flow/minimum- cut problem in networks. We use a two-phase max-min optimization technique in a multi-objective programming framework to estimate the individual stage efficiencies and the overall system efficiency in two-stage processes of varying complexity. This enables us to estimate unique and unbiased efficiency scores and, if required, to drive the efficiency assessments effectively in line with specific priorities given to the stages. A comparison with the multiplicative decomposition approach on data drawn from the literature brings into light the advantages of our method.

Keywords: Network DEA; Two-stage processes; Weak link; Multi-objective programming (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (11)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:ejores:v:254:y:2016:i:2:p:481-492

DOI: 10.1016/j.ejor.2016.03.028

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