Search found 2 matches
- Wed Oct 31, 2012 10:08 am
- Forum: ARCH and GARCH Models
- Topic: testing for the I in IGARCH
- Replies: 1
- Views: 5033
testing for the I in IGARCH
Hi all. I find hardly any literature on tests for integration in GARCH models. Specifically, I want to test if the assumption (a+b)=1 can be rejected in the GARCH(1,1) model h(t) = c + a * u(t-1)**2 + b * h(t-1). What I currently do is a simple LR test, i.e. -2.0*(%logl_restricted - %logl_unrestrict...
- Tue Sep 06, 2011 11:33 am
- Forum: ARCH and GARCH Models
- Topic: Q_t matrix in garch(...,mv=dcc)
- Replies: 0
- Views: 4408
Q_t matrix in garch(...,mv=dcc)
Hi all. Most likely a stupid question: I have to forecasts with DCC GARCH. I therefore need the Q_t matrix from equation (20) in UG-299 (version 8). I know I can hard-code all the stuff, but the "garch" instruction seems to perform much quicker than any "maximize". Is there any w...