Individual coefficients in Panel cointegration not saved with btwcoefs

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altaus
Posts: 20
Joined: Fri Jan 30, 2015 6:46 am

Individual coefficients in Panel cointegration not saved with btwcoefs

Postby altaus » Mon May 22, 2017 4:26 am

HI,

I am trying to estimate a panel cointegration model and save the individual coefficients in a matrix. I use the command as specified in the guide (btwcoefs=) and it works for when using grouped panel method, but not for the other two (see below). Is there a reason for that or is it a bug?


dols_prod.cointreg(method=dols, btwcoefs=zpr,lltype=sic, panmethod=grouped) y x z
dols_prod.cointreg(method=dols, btwcoefs=zpr,lltype=sic, panmethod=pooled) y x z
dols_prod.cointreg(method=dols, btwcoefs=zpr,lltype=sic, panmethod=weighted) y x z

Kind regards,
Marta

EViews Glenn
EViews Developer
Posts: 2605
Joined: Wed Oct 15, 2008 9:17 am

Re: Individual coefficients in Panel cointegration not saved with btwcoefs

Postby EViews Glenn » Mon May 22, 2017 10:34 am

Sorry, the documentation is unclear (that one is my fault).

The cross-section coefficients were designed to be saved only in the case where you are estimating the between (grouped) model in a panel context (panmethod=grouped), as that is the only time that they are calculated explicitly. So the two options should have been listed under Panel Options, and have a note, only if “panmethod=grouped”.

That said, we are currently displaying estimates of the individual deterministics in the other two cases and I’ll have to look into why we aren’t allowing you to save them (we added that feature after the initial release). Note that we will never save the covariance for these estimates as they are treated as nuisance parameters and never estimated. We'll look into it for a future version, but for now, all you can do is copy the results from the individual coefficients view.

nlevenko
Posts: 2
Joined: Mon Feb 04, 2019 6:17 am

Re: Individual coefficients in Panel cointegration not saved with btwcoefs

Postby nlevenko » Fri Feb 08, 2019 7:22 am

Hello, Glenn!

Has something changed since 2017? Is it possible to save individual coefficients of pooled weighted DOLS?

Thank you!
Natalia


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