输入输出指标的增加减少对 DEA 有效性的影响

The Effect of Increasing (Decreasing) Input(Output) Indexes on DEA Efficiency

详细地讨论了输入输出系统的输入输出指标增加或减少时，对ＤＥＡ有效性的影响，特别是给出了ＤＥＡ有效性变化的充分或必要条件，这将给判定指标变化后决策单元的有效性带来方便．

This paper discusses the effect of DEA efficiency when increasing (decreasing)input indexes or output indexes.Some important results are given.The results are convenient to judge DEA efficiency of a DMU with the change of input or output indexes.