执行命令的选择要区分生产函数与成本函数,同时考虑影响因素的模型与不考虑影响因素的模型是不一样的,具体你可以参考coelli(1996)那个指南。
下面我以生产函数考虑影响因素的模型为例:
2 1=ERROR COMPONENTS MODEL, 2=TE EFFECTS MODEL
eg4-dta.txt DATA FILE NAME
eg4-out.txt OUTPUT FILE NAME
1 1=PRODUCTION FUNCTION, 2=COST FUNCTION
y LOGGED DEPENDENT VARIABLE (Y/N)
28 NUMBER OF CROSS-SECTIONS
9 NUMBER OF TIME PERIODS
203 NUMBER OF OBSERVATIONS IN TOTAL
5 NUMBER OF REGRESSOR VARIABLES (Xs)
y MU (Y/N) [OR DELTA0 (Y/N) IF USING TE EFFECTS MODEL]
5 ETA (Y/N) [OR NUMBER OF TE EFFECTS REGRESSORS (Zs)]
n STARTING VALUES (Y/N)
IF YES THEN BETA0
BETA1 TO
BETAK
SIGMA SQUARED
GAMMA
MU [OR DELTA0
ETA DELTA1 TO
DELTAP]
NOTE: IF YOU ARE SUPPLYING STARTING VALUES
AND YOU HAVE RESTRICTED MU [OR DELTA0] TO BE
ZERO THEN YOU SHOULD NOT SUPPLY A STARTING
VALUE FOR THIS PARAMETER.
请问你SFA问题。在用三阶段DEA分析,第二阶段是以第一阶段的投入松弛作为因变量,以影响因素做自变量,请问这时做SFA分析时,NUMBER OF REGRESSOR VARIABLES (Xs)和 ETA (Y/N) [OR NUMBER OF TE EFFECTS REGRESSORS (Zs)]
怎么设置