我用的是sfcross命令来测算效率,但是输入predict te,te命令时出现了下面这个问题,请大神们帮帮忙解答一下;
sfcross lnT lnGDPi lnGDPj lnPopi lnPopj lnDist comlang ,d(t) emean(zdjl IDE fta BC)
Log likelihood = -190.9379
------------------------------------------------------------------------------
lnT | Coef. Std. Err. z P>|z| [95% Conf. Interval]
-------------+----------------------------------------------------------------
Frontier |
lnGDPi | 2.177244 .9209445 2.36 0.018 .3722263 3.982262
lnGDPj | .48888 .0288411 16.95 0.000 .4323524 .5454076
lnPopi | -29.3239 13.96683 -2.10 0.036 -56.69839 -1.949407
lnPopj | .1749537 .0322796 5.42 0.000 .1116868 .2382207
lnDist | -.4347317 .0414824 -10.48 0.000 -.5160356 -.3534278
comlang | .3108095 .0973135 3.19 0.001 .1200785 .5015406
_cons | 189.0547 88.29007 2.14 0.032 16.00935 362.1001
-------------+----------------------------------------------------------------
Mu |
zdjl | .1341819 .0510278 2.63 0.009 .0341692 .2341946
IDE | -.0360546 .0044952 -8.02 0.000 -.0448651 -.0272441
fta | -.6714636 .0984771 -6.82 0.000 -.8644752 -.478452
BC | -1.078058 .2871464 -3.75 0.000 -1.640855 -.5152617
_cons | 3.588152 .2723811 13.17 0.000 3.054295 4.122009
-------------+----------------------------------------------------------------
Usigma |
_cons | -1.492288 .1123337 -13.28 0.000 -1.712458 -1.272118
-------------+----------------------------------------------------------------
Vsigma |
_cons | -4.333295 .6661313 -6.51 0.000 -5.638888 -3.027702
-------------+----------------------------------------------------------------
sigma_u | .4741915 .0266338 17.80 0.000 .4247608 .5293746
sigma_v | .114561 .0381563 3.00 0.003 .0596391 .2200609
lambda | 4.139204 .0534832 77.39 0.000 4.034379 4.244029
------------------------------------------------------------------------------
. predict te, te
option te not allowed