Hello everyone,
For a study on estimating and forecasting Value-at-Risk, I developed several models.
Unfortunately on my fourth model I am stuck..
I aim to estimate an AR-EGARCH-N model, thus with normal distributed error terms and also AR-EGARCH-t, thus with t-distributed ones.
My mean equation and variance equation can be found in the image that I uploaded.
The mean equation is a simple AR(7) model with intercept, and the variance equation consists of an ARCH(1) and ARCH(7) term, a GARCH(1) and GARCH(7) term and an asymmetric term.
Now: my issue is that eviews cannot estimate this model with the standard equation screen, selecting egarch, etc. because I cannot select lag 1 and lag 7...
I tried to do this in the logl window, but I'm stuck
Can anyone help me or give any advice?
Thank
ps: my logl code attempt
@logl LL3
//MEAN EQUATION
res = log_returns - c(1) - c(2)*log_returns_1 - c(3)*log_returns_2 -
c(4)*log_returns_3 - c(5)*log_returns_4 - c(6)*log_returns_5 -
c(7)*log_returns_6 - c(8)*log_returns_7
//VARIANCE EQUATION
LOG(var) =
c(9)
+ c(10)*(RESID(-1)/@SQRT(GARCH(-1))
+ c(11)*LOG(GARCH(-1))
+ c(12)*ABS(RESID(-1)/@SQRT(GARCH(-1)))
+ c(13)*(RESID(-7)/@SQRT(GARCH(-7))
+ c(14)*LOG(GARCH(-7))
//DISTRIBUTION TYPE ERROR TERMS -normal
logl3 = log(@dnorm(res/@SQRT(var))) - log(var)/2
Estimate AR-EGARCH with 1;7 ARCH, 1;7 GARCH
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Estimate AR-EGARCH with 1;7 ARCH, 1;7 GARCH
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