phase margin

The paper also defines new concepts such as price inefficiency, absolute redundancy, relative redundancy, to direct managers to improve their decision.

文章通过深入分析 ,发现导致决策单元无效的三大成因 ,把DEA对决策单元的分析结果由两种增加到四种 ,并相应的提出价格无效、绝对冗余、相对冗余等新概念 ,从而为管理者改善决策提供明确的指导方向。