Search found 2683 matches
- Tue Aug 12, 2025 12:20 pm
- Forum: General Information and Tips and Tricks
- Topic: Mathematical representation of a particular state space model
- Replies: 1
- Views: 18974
Re: Mathematical representation of a particular state space model
That's an interesting model. Let me see if I can take a crack at this. First off, in the DEPVAR1 equation you define the error E1 with a variance specification and reuse the error E1 in the DEPVAR2 equation. I must admit that while I think your text specification is fine, I would probably write the ...
- Sat Mar 08, 2025 9:53 am
- Forum: Estimation
- Topic: Elastic Net Min-Max Normalization
- Replies: 4
- Views: 41481
Re: Elastic Net Min-Max Normalization
Thanks for putting that together. It helps for us have a common set of data with which to work. It is unsuprising that you were unable to replicate the results from the in-built EViews 12 scaled elastic net as the documentation is frustratingly silent about the approach. I apologize for that. As you...
- Wed Mar 05, 2025 11:15 am
- Forum: Estimation
- Topic: Elastic Net Min-Max Normalization
- Replies: 4
- Views: 41481
Re: Elastic Net Min-Max Normalization
Can you post your workfile?
- Thu Feb 06, 2025 10:48 am
- Forum: Bug Reports
- Topic: copy command failed on formula
- Replies: 3
- Views: 40254
Re: copy command failed on formula
Sorry. Just saw this.
The fix is in the current patch, dated Feb 5. I believe it will be pushed in the next day or so.
The fix is in the current patch, dated Feb 5. I believe it will be pushed in the next day or so.
- Fri Jan 31, 2025 10:09 am
- Forum: Estimation
- Topic: ENET Elastic net regularization: EViews 13 vs 14
- Replies: 1
- Views: 44041
Re: ENET Elastic net regularization: EViews 13 vs 14
Hi. Thanks for your question. The engine for elastic net estimation was completely revamped between the two versions. In particular, we moved to a coordinate descent algorithm with warm start path estimation which offers considerable computational efficiencies and more importantly, numeric stability...
- Fri Jan 10, 2025 10:32 am
- Forum: Bug Reports
- Topic: copy command failed on formula
- Replies: 3
- Views: 40254
Re: copy command failed on formula
Sorry for the inconvenience. We'll get a fix out soon.
- Wed Sep 25, 2024 10:32 am
- Forum: Estimation
- Topic: Sspace - Kalman Gain
- Replies: 3
- Views: 46328
Re: Sspace - Kalman Gain
No promises, but asking for clarification... How would you want the gains to be saved? As a matrix with rows representing observations? And each row with a vec of the gain matrix? As one matrix for each period? Trying to think about what an interface would look like that provides benefits over the s...
- Wed Sep 25, 2024 9:51 am
- Forum: General Information and Tips and Tricks
- Topic: State Space equivalent representations?
- Replies: 1
- Views: 40682
Re: State Space equivalent representations?
Could you please post your workfile so we are looking at the same thing (and to make discussion easier). Thanks. My first instinct is that there is a difference in the timing between the covariance between the states and the signals in the two cases. The second case has a correlation between the DEP...
- Sat Sep 21, 2024 7:44 am
- Forum: Estimation
- Topic: Bivariate Markov Switching Model
- Replies: 6
- Views: 58041
Re: Bivariate Markov Switching Model
From the point of VAR analysis, a VAR with no lags isn't particularly useful. It is simply a system of equations. As such, much of the standard VAR toolkit like impulse response analysis simply isn't useful in that case. But some of the methods that we support, like Markov switching, may be of inter...
- Fri Sep 20, 2024 9:42 am
- Forum: Estimation
- Topic: how to decompose forecast results of binary regression
- Replies: 1
- Views: 37991
Re: how to decompose forecast results of binary regression
Hi. To be honest, I'm not certain that I understand the proposed exercise, in particular, what you mean by the "projected change" and what distributive property you want your results to follow.
- Wed Apr 10, 2024 10:44 am
- Forum: Estimation
- Topic: Ridge Estimation
- Replies: 3
- Views: 33396
Re: Ridge Estimation
They scale the regressors by the L1 and L2 norms of the data, respectively, prior to estimation. So the penalties on parameters will be on coefficients that are for scaled data. The coefficients are transformed back to original scale for reporting.
Hope that this answers your question.
Hope that this answers your question.
- Wed Feb 07, 2024 12:54 pm
- Forum: Estimation
- Topic: IRFs with MS-VAR
- Replies: 2
- Views: 24175
Re: IRFs with MS-VAR
Are your lag coefficients regime-specific? If they are not, then the impulse-responses are not regime-specific. If they are, then you will see a spool with the IRs for each regime.
- Wed Jan 24, 2024 2:22 pm
- Forum: Estimation
- Topic: Estimating state space model for GARCH(1,1)
- Replies: 18
- Views: 122298
Re: Estimating state space model for GARCH(1,1)
I am sorry, but no.
- Wed Oct 04, 2023 10:01 am
- Forum: Estimation
- Topic: STAR output issues
- Replies: 28
- Views: 2136664
Re: STAR output issues
Sorry, just saw this. Yes. Please provide, along with as much information as possible. Thanks.
- Wed Sep 20, 2023 7:27 pm
- Forum: Estimation
- Topic: STAR output issues
- Replies: 28
- Views: 2136664
Re: STAR output issues
It's up. Take a look.
