Research of an improved three-stage DEA model based on stochastic frontier analysis. (Chinese. English summary) Zbl 1449.90147
Summary: Considering the problems existing in the second stage that partial input value adjustment is too large, an improved three-stage DEA model is proposed. The concept of environmental impact factor is firstly introduced, and a suitable statistical method is used to identify the importance of environmental impact. In addition, a new adjustment formula is proposed. Finally, the shortcomings of the traditional three-stage DEA model and the feasibility and effectiveness of the proposed model are illustrated by numerical examples.