The fit.models function and its associated methods (coefficients, print, summary, plot, etc.) were originally provided in the robust package to compare robustly and classically fitted model objects. See chapters 2, 3, and 5 in Insightful (2002) 'Robust Library User's Guide' <http://robust.rforge.rproject.org/Robust.pdf>). The aim of the fit.models package is to separate this fitted model object comparison functionality from the robust package and to extend it to support fitting methods (e.g., classical, robust, Bayesian, regularized, etc.) more generally.
Package details 


Author  Kjell Konis [aut, cre] 
Maintainer  Kjell Konis <kjellk@gmail.com> 
License  GPL 
Version  0.64 
Package repository  View on CRAN 
Installation 
Install the latest version of this package by entering the following in R:

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