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6 年
R语言 函数与模型(16):超效率DEA
SDEA模型也被称为超效率DEA模型,由Andersen等于2002年发表在Journal of Productivity Analysis上。其基本模型如下: ####设置一个空的数据计算结果矩阵。eff.down、eff.cons、eff.up分别为基于规模收益递减、规模收益恒定、规模收益上升下的技术开发效率。根据面板数据将矩阵 ...
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