EViews.com

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