你好。我在做egarch模型的时候,发现总是出现错误:
在不加入ma()ar()两个选项的时候结果显示could not calculate numerical derivatives missing values encountered
加入上面两个选项就会出现 flat log likelihood encountered, cannot find uphill direction
我弄了好几天,实在不知道应该怎么处理了。附上 自相关图和偏自相关图还有varsoc命令结果,
再附上相关数据和do文件。望指教。
谢谢!!
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lag LL LR df p FPE AIC HQIC SBIC
----+----------------------------------------------------------------------
0 2817.53 .000359* -5.09319* -5.09148* -5.08866*
1 2817.53 4.9e-06 1 0.998 .00036 -5.09138 -5.08796 -5.08233
2 2817.71 .3503 1 0.554 .000361 -5.08989 -5.08475 -5.07631
3 2817.71 1.4e-05 1 0.997 .000361 -5.08808 -5.08123 -5.06997
4 2817.71 .00024 1 0.988 .000362 -5.08628 -5.07771 -5.06363
5 2817.71 2.2e-05 1 0.996 .000363 -5.08447 -5.07419 -5.0573
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