DEA模型的算法，可以算出很多的模型，数据包络分析是一个较为复杂的效率分析方法，利用软件不仅可以大大降低计算难度，还可以保证计算的准确性。(The algorithm of DEA model can be used to calculate many models. Data envelopment analysis is a more complex method of efficiency analysis. Using software can not only greatly redu