An extended DEA model is suggested, which is capable of maximizing the efficiency of individual units, that is, total input consumption is minimized and total output production is maximized.

• 摘要给出了一种新的DEA模型（投入产出综合评价模型），在考虑所有决策单元的输入的同时，顾及所有决策单元的输出，即保证所有决策单元输入总和最小和所有决策单元的输出总和最大。