arlionn 发表于 2011-10-9 09:16
可以修改内部程序来搞定,我在暑期培训中修改了Love的程序,命名为 pvar2,如果需要的话,可以发邮件给我。 ...
老师。我在运行PVAR中出现问题,如何根据GMM估计中的t-GMM值是否显著?还有方差分解出不来?
输入的命令语句是
do "D:\STATA10.0\STATA12\ado\pvar ado\helm.ado"
helm lgdp lgas lwat lsol
do "D:\STATA10.0\STATA12\ado\pvar ado\sgmm.ado"
do "D:\STATA10.0\STATA12\ado\pvar ado\pvar.ado"
pvar lgdp lgas lwat lsol, lag(3) gmm impulse monte 500 decomp (30)
结果如下:
EQ4: dep.var : h_lsol
b_GMM se_GMM t_GMM
L.h_lgdp 3.9695476 15.922736 .2493006
L.h_lgas -.09543221 3.5528788 -.02686053
L.h_lwat -5.2097231 10.500155 -.49615679
L.h_lsol .6868798 .84242814 .81535714
L2.h_lgdp -6.4409787 12.80624 -.50295626
L2.h_lgas -.08231549 1.396539 -.05894249
L2.h_lwat .49566873 .91860096 .53959091
L2.h_lsol .06681118 .27231929 .24534134
L3.h_lgdp 2.0366808 6.710735 .30349593
L3.h_lgas 1.1098599 1.7580756 .63129249
L3.h_lwat .93265486 2.1570344 .43237829
L3.h_lsol .10942538 .23102298 .47365583
------------------------------------------------------------------------------
just identified - Hansen statistic is not calculated
symmetric uu[4,4]
lgdp lgas lwat lsol
lgdp .00308961
lgas .00370542 .01968829
lwat -.01209903 -.01168149 .06451569
lsol -.03189763 -.03849891 .10785298 1.2107535
Residuals correlation matrix
| u1 u2 u3 u4
-------------+------------------------------------
u1 | 1.0000
|
|
u2 | 0.4749 1.0000
| 0.0000
|
u3 | -0.8584 -0.3308 1.0000
| 0.0000 0.0000
|
u4 | -0.5219 -0.2500 0.3864 1.0000
| 0.0000 0.0001 0.0000
|
GMM finished : 21:25:52
Starting Monte-Carlo loop : 21:25:53 , total 500 repetitions requested
matrix not symmetric
r(505);
可是方差分解过程出错了。这是什么原因啊