用frontier作SFA分析,对6个影响因素的回归,请高手赐教,为什么不出结果???frontier对数据有什么要求吗
2 1=ERROR COMPONENTS MODEL, 2=TE EFFECTS MODEL
input1.dta DATA FILE NAME
input1.out OUTPUT FILE NAME
2 1=PRODUCTION FUNCTION, 2=COST FUNCTION
n LOGGED DEPENDENT VARIABLE (Y/N)
24 NUMBER OF CROSS-SECTIONS
1 NUMBER OF TIME PERIODS
24 NUMBER OF OBSERVATIONS IN TOTAL
6 NUMBER OF REGRESSOR VARIABLES (Xs)
y MU (Y/N) [OR DELTA0 (Y/N) IF USING TE EFFECTS MODEL]
6 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.