Ferdogan wrote:
>
> Hi,
>
> I have two products which are substitudes. I try to fix a system as below
> to mydata.
>
> Demand1 = A1 -B1*Price1 + C1*Price2
> Demand2 = A2 +B2*Price1 - C2*Price2
>
> I would expect C1 & B2 to be symmetric, If they are truly substitude. How
> can I enforce this symmetry when creating a system of equations via
> SystemFit ?
>
--
View this message in context:
http://www.nabble.com/SystemFit-tp24588252p24713807.html
Sent from the R help mailing list archive at Nabble.com.
______________________________________________
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.