Lee, Hsuan-Shih; Zhu, Joe - In: European Journal of Operational Research 216 (2012) 2, pp. 429-433
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 …