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- W2107329360 abstract "Lee et al. (2011) and Chen and Liang (2011) develop a data envelopment analysis (DEA) model to address the infeasibility issue in super-efficiency models. In this paper, we point out that their model is feasible when input data are positive but can be infeasible when some of input is zero. Their model is modified so that the new super-efficiency DEA model is always feasible when data are non-negative. Note that zero data can make the super-efficiency model under constant returns to scale (CRS) infeasible. Our discussion is based upon variable returns to scale (VRS) and can be applied to CRS super-efficiency models." @default.
- W2107329360 created "2016-06-24" @default.
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- W2107329360 date "2012-01-01" @default.
- W2107329360 modified "2023-10-16" @default.
- W2107329360 title "Super-efficiency infeasibility and zero data in DEA" @default.
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- W2107329360 doi "https://doi.org/10.1016/j.ejor.2011.07.050" @default.
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