% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/est_pmg.R
\name{pmg_estimator}
\alias{pmg_estimator}
\title{Pooled Mean Group (PMG) Estimator Internals}
\description{
Internal functions for the Pooled Mean Group (PMG) estimator of Pesaran,
Shin & Smith (1999). PMG imposes common long-run coefficients across
units while letting the speed of adjustment and short-run dynamics remain
heterogeneous.
}
\details{
The model is the same ARDL\eqn{(p_y, p_x)} as CS-ARDL, but the long-run
coefficient vector \eqn{\theta} is pooled. This implementation uses a
two-step inverse-variance weighted pooling of the unit-level long-run
coefficients obtained from the CS-ARDL fit, a simplification of the
concentrated maximum-likelihood estimator of Pesaran, Shin & Smith (1999)
that is fast, consistent, and requires no numerical optimisation.
}
\keyword{internal}
