模型如下,在mean equation中加入了一个外生变量RMID,回归结果中第3,4出现了未命名的参数,感觉RMID的参数估计也不靠谱,这是怎么回事?
GARCH(P=1,Q=1,MV=DCC,REGRESSORS,ITERS=2000,PMETHOD=SIMPLEX,PITERS=100) / RCNY_1M RCNH_1M
# Constant RMID
MV-GARCH, DCC - Estimation by BFGS
Convergence in 1 Iterations. Final criterion was 0.0000000 <= 0.0000100
Usable Observations 767
Log Likelihood 1417.6261
Variable Coeff Std Error T-Stat Signif
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1. Constant -2.8132e-003 2.5365e-003 -1.10909 0.26739034
2. RMID 0.1615 0.0000 0.00000 0.00000000
3. 3.9824e+016 0.0000 0.00000 0.00000000
4. 2.3226e+067 0.0000 0.00000 0.00000000
5. C(1) 5.0398e-004 3.3767e-005 14.92497 0.00000000
6. C(2) 5.5245e-004 4.2157e-005 13.10455 0.00000000
7. A(1) 0.1282 5.2352e-003 24.49411 0.00000000
8. A(2) 0.0983 4.8452e-003 20.29240 0.00000000
9. B(1) 0.8382 3.4654e-003 241.88012 0.00000000
10. B(2) 0.8695 3.6332e-003 239.31547 0.00000000
11. DCC(1) 0.0437 9.0883e-003 4.81206 0.00000149
12. DCC(2) 0.8918 0.0201 44.31431 0.00000000