- ppmlhdfe implements Poisson pseudo-maximum likelihood regressions (PPML) with multi-way fixed effects, as described by Correia, Guimarães, Zylkin. The estimator employed is robust to statistical separation and convergence issues, due to the procedures developed in Correia, Guimarães, Zylkin.
W19-ppmlhdfe--Fast poisson estimation with high-dimensional fixed effects-[2019.03].pdf
(215 KB)
W19-Verifying the existence of maximum likelihood estimates for generalized line.pdf
(495.52 KB)



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