Hello,
does anyone have practical experience in Stata with Constrained Poisson Pseudo Maximum Likelihood Estimation (CPPML) by Pfaffermayr (2020), especially for gravity models based on trade?
Thank you in advance!
Best,
Daniel
does anyone have practical experience in Stata with Constrained Poisson Pseudo Maximum Likelihood Estimation (CPPML) by Pfaffermayr (2020), especially for gravity models based on trade?
Thank you in advance!
Best,
Daniel
