Extending the work of reference 3, this paper also indicates a general algorithm to calculate the gradient of DEA efficiency for inefficient DMUs within the empirical production set, in which all inputs and outputs of the inefficient DMUs are simultaneously changed to make them efficient DMUs.
提出经验生产可能集的支撑超平面表示形式 ,在文献 [3]的基础上 ,对生产可能集内任意非 DEA有效的决策单元 ,给出在生产可能集内 ,求解其 DEA有效最速方向 ,使其最速达到 DEA有效的一般方向 ,同时指出文献 [4 ]、[7]中的两处错误。
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