All functions

bvu()

Bonus vetus OLS (BVU)

bvw()

Bonus vetus OLS (BVW)

ddm()

Double Demeaning (DDM)

discard_unusable()

Discard non-positive and/or non-finite observations in datasets

ek_tobit()

Eaton and Kortum (2001) Tobit model (EK Tobit)

et_tobit()

Eaton and Tamura (1995) threshold Tobit model (ET Tobit)

fixed_effects()

Fixed Effects

gpml()

Gamma Pseudo Maximum Likelihood (GPML)

gravity_no_zeros

Gravity dataset without zero trade flows

gravity_zeros

Gravity dataset without zero trade flows

hm_summary()

Head and Mayer consistent summary statistics

log_distance()

Apply logarithm to distance column

nbpml()

Negative Binomial Pseudo Maximum Likelihood (NBPML)

nls()

Non-linear Least Squares (NLS)

ols()

Ordinary Least Squares (OLS)

ppml()

Poisson Pseudo Maximum Likelihood (PPML)

sils()

Structural Iterated Least Squares (SILS)

tetrads()

Tetrads

tobit()

Left-censored Tobit model with known threshold