Search found 8 matches

by alfernz
Wed Aug 25, 2010 7:11 am
Forum: Estimation
Topic: State Space Modeling Issues
Replies: 13
Views: 12056

Re: State Space Modeling Issues

Thanks for the response Starz.

I have been adjusting the starting values and it seems that estimation is very, very sensitive to which starting values I was choosing for my variance terms.

Seems like I have that sorted.

Thanks,

Alan
by alfernz
Wed Aug 25, 2010 5:37 am
Forum: Estimation
Topic: State Space Modeling Issues
Replies: 13
Views: 12056

Re: State Space Modeling Issues

Hi again guys, Just some quick questions which are related to the above, which hopefully somebody can explain to me. Please find my workfile attached. Here you can see that there are two state space models (ss02 and ss02a) which are identical. However, the results I have obtained when estimating are...
by alfernz
Mon Aug 23, 2010 3:20 am
Forum: Estimation
Topic: State Space Modeling Issues
Replies: 13
Views: 12056

Re: State Space Modeling Issues

Hi,

I just thought I would bump this to see if anybody can help me with the above -- even if its to say they cant. I am still struggling.

Thanks.
by alfernz
Tue Aug 17, 2010 7:11 am
Forum: Estimation
Topic: State Space Modeling Issues
Replies: 13
Views: 12056

Re: State Space Modeling Issues

Hi again guys, I really appreciate all the help you have given me so far. Its good to know that my version of Eviews supports the model I want to estimate. Unfortunately, I don't seem to be able to get the model to converge to a singular covariance matrix. I will describe the steps I have taken, whi...
by alfernz
Mon Aug 16, 2010 9:30 am
Forum: Estimation
Topic: State Space Modeling Issues
Replies: 13
Views: 12056

Re: State Space Modeling Issues

@Trubador Thanks for the help -- very much appreciated. I will try to make my model more parsimonious. I agree with your point on the random walks in the deathrate equation -- as my data indicate this is I(0). However, I would like to include a RW in the birthrate equation because this corresponds t...
by alfernz
Mon Aug 16, 2010 6:16 am
Forum: Estimation
Topic: State Space Modeling Issues
Replies: 13
Views: 12056

Re: State Space Modeling Issues

Thanks, hopefully this loads!

Alan
by alfernz
Sat Aug 14, 2010 6:06 am
Forum: Econometric Discussions
Topic: Determining cointegrating vectors with Johansen
Replies: 4
Views: 7171

Re: Determining cointegrating vectors with Johansen

In the eviews help guide it says that when estimating VEC, the number of CEs should be one lower than the number of explanatory variables? Why is this requirement so? Because the EC matrix is not of reduced rank and thus a levels VAR is appropriate. The following is the usual rule of thumb: rank(pi...
by alfernz
Sat Aug 14, 2010 5:44 am
Forum: Estimation
Topic: State Space Modeling Issues
Replies: 13
Views: 12056

State Space Modeling Issues

Hello, I am new to Eviews and would greatly appreciate any help with the following query. I purchased Eviews last week based on the software's ability to perform State Space modeling. However, I could only afford the basic student package - version 6. I note that there are certain limits on the stud...

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