Chen, Yao; Djamasbi, Soussan; Du, Juan; Lim, Sungmook - In: International Journal of Production Economics 146 (2013) 2, pp. 550-556
, the current paper develops an integer-valued DEA super-efficiency model. Super-efficiency DEA models are known to have the … problem of infeasibility. Recent studies have shown that directional distance function (DDF) based super-efficiency does not … integer values under the concept of super-efficiency. The current paper thus modifies the DDF approach so that integer values …