Estimation Methods for Gravity Models
Bonus vetus OLS (BVU)
Bonus vetus OLS (BVW)
Double Demeaning (DDM)
Discard non-positive and/or non-finite observations in datasets
if(!exists(".Rdpack.currefs")) .Rdpack.currefs <-new.env();Rdpack::in...
if(!exists(".Rdpack.currefs")) .Rdpack.currefs <-new.env();Rdpack::in...
Fixed Effects
Gamma Pseudo Maximum Likelihood (GPML)
gravity exported operators and S3 methods The following functions are ...
Head and Mayer consistent summary statistics
Apply logarithm to distance column
Negative Binomial Pseudo Maximum Likelihood (NBPML)
Non-linear Least Squares (NLS)
Ordinary Least Squares (OLS)
Poisson Pseudo Maximum Likelihood (PPML)
Structural Iterated Least Squares (SILS)
Tetrads
Left-censored Tobit model with known threshold
A wrapper of different standard estimation methods for gravity models. This package provides estimation methods for log-log models and multiplicative models.