蜗牛斌 发表于 2017-7-15 10:50
> dea(X, Y, RTS="vrs", ORIENTATION="in", XREF=NULL, YREF=NULL,+ FRONT.IDX=NULL, SLACK=FALSE, DUAL=FA ...
0 fdh Free disposability hull, no convexity assumption
1 vrs Variable returns to scale, convexity and free disposability
2 drs Decreasing returns to scale, convexity, down-scaling and free disposability
3 crs Constant returns to scale, convexity and free disposability
4 irs Increasing returns to scale, (up-scaling, but not down-scaling), convexity and free disposability
5 irs2 Increasing returns to scale (up-scaling, but not down-scaling), additivity, and free disposability
6 add Additivity (scaling up and down, but only with integers), and free disposability
7 fdh+ A combination of free disposability and restricted or local constant return to scale