Search found 10 matches

by potiv
Mon Aug 27, 2018 10:40 pm
Forum: Help With Programming
Topic: average across series
Replies: 2
Views: 9052

Re: average across series

Many thanks Tom.
by potiv
Tue Jul 24, 2018 6:17 am
Forum: Help With Programming
Topic: average across series
Replies: 2
Views: 9052

average across series

Dear Tom, One task that I always struggle with is the computation of the average across series. The need for doing this arises, for example, in forecast combination applications. In that context, I have a set of forecasts that I have previously generated (a set of series, perhaps organized in a vect...
by potiv
Thu Jan 08, 2015 2:35 pm
Forum: Data: Reading, Writing, Transforming
Topic: import new series
Replies: 4
Views: 9095

Re: import new series

Hi There, I am having the same problem as Jim, getting about the same error message, but when I press the button to clear the memory. Basically, I can't work.
Is this an emergent bug, I never had it before?
Best regards,
Valerio
by potiv
Fri Nov 09, 2012 9:48 am
Forum: Other RATS Usage Questions
Topic: Font size
Replies: 2
Views: 83557

Font size

Hi There, I just moved to RATS 8.20 and I am having the problem that I cannot zoom in or out, i.e. cannot change the size of what I see in the RATS input and output windows. I know it sounds like a minor problem but it a bit annoying because I am used to work by running the code as I write on the pa...
by potiv
Wed Dec 07, 2011 5:25 pm
Forum: ARCH and GARCH Models
Topic: DCC-GARCH correlation standard errors
Replies: 0
Views: 4341

DCC-GARCH correlation standard errors

Dear All, I estimated DCC-GARCH conditional correlations using the GARCH instruction with the MV=dcc option. Does anybody know how to estimate standard errors? What I'd like to do is wrap the DCC conditional correlation series with a 95% confidence interval. Any help would be very much appreciated! ...
by potiv
Tue Nov 22, 2011 4:43 pm
Forum: Help With Programming
Topic: rolling out of sample forecasts (ARMA+GARCH)
Replies: 2
Views: 6419

Re: rolling out of sample forecasts (ARMA+GARCH)

many thanks! :D
Valerio
by potiv
Tue Nov 08, 2011 5:54 pm
Forum: Help With Programming
Topic: rolling out of sample forecasts (ARMA+GARCH)
Replies: 2
Views: 6419

rolling out of sample forecasts (ARMA+GARCH)

Dear Tom, I wonder if I could ask for your kind help to double check whether the code below is ok. I need to forecast the rolling out of sample mean and variance of a number of series and its really crucial that I get the 'time subscripts' right. The model is a relatively simple ARMA+GARCH. My big w...
by potiv
Mon Oct 03, 2011 10:49 am
Forum: Help With Programming
Topic: Windows error messages
Replies: 9
Views: 14124

Re: Windows error messages

Dear Tom, Many thanks for getting back to me. Yes, taking the source instruction out of the loops speeds things up a bit, but as you say there is still an awful lot of calculations to be done so it still takes a while. Unfortunately i need to get all those calculations done, can't get around that un...
by potiv
Fri Sep 30, 2011 1:20 pm
Forum: Help With Programming
Topic: Windows error messages
Replies: 9
Views: 14124

Re: Windows error messages

Dear Tom, Many thanks for getting back to me. Actually, i have good news. Today I upgraded to RATS 8 from RATS 7.20 and now the code works without crashing! I am attaching the code (and the dataset) anyway in case it may help explain why it was causing my laptop to crash when i was running it in RAT...
by potiv
Wed Sep 28, 2011 7:28 am
Forum: Help With Programming
Topic: Windows error messages
Replies: 9
Views: 14124

Windows error messages

Dear All, I am running RATS code on Windows 7 that I knows works on Windows XP. It goes through many loops to do rolling forecasts of various series. Basically, I am using 5-year windows of monthly data to generate monthly out-of-sample forecasts of currency returns. In Windows XP it just used to ta...