% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/absorb.R
\name{absorb_internals}
\alias{absorb_internals}
\title{High-Dimensional Fixed Effect Absorption}
\description{
Internal helpers to project out one or more grouping factors from a
set of numeric columns before the main \code{dcce()} unit loop runs.
When a single factor is supplied the within transformation reduces to
a simple group-mean demeaning; for two or more factors the alternating
projections algorithm of Guimaraes & Portugal (2010) / Correia (2016)
is used.
}
\details{
The implementation is pure base R and requires no additional package
dependencies.
}
\keyword{internal}
