On 16/08/11 10:58, Bert Gunter wrote:
Well, of course that doesn't work for categorical covariates (duhhh!)
-- so I'll just stop at my first clause, "I don't know." Sorry.
I would suggest that a better specification of the model and the
constraints may elicit better and faster responses.
I think you were essentially right the first time, Bert. If you want
two beta's to be the same, for a factor, you should just collapse
those two levels of the factor into one. Is it not so?
cheers,
Rolf
-- Bert
On Mon, Aug 15, 2011 at 3:53 PM, Bert Gunter<bgun...@gene.com> wrote:
I don't know the answer in general, but for the specific constraint of
two coefficients being the same, I would assume that you should create
a new covariate which is the sum of the two individual ones and fit
this single combined covariate instead of the two separate ones.
Cheers,
Bert
On Mon, Aug 15, 2011 at 2:20 PM, Essers, Jonah
<jonah.ess...@childrens.harvard.edu> wrote:
I have been using the mlogit package but can't seem to figure out how to make
constraints on the beta coefficients.
For example, I would like to force that two of my beta's are equal to each
other.
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
