Package: metafrontier
Type: Package
Title: Analysis of Metafrontier Models for Efficiency and Productivity
Version: 0.3.0
Authors@R: c(
    person("Erik", "Enstad", email = "erik.enstad@nhh.no",
           role = c("aut", "cre"),
           comment = c(ORCID = "0009-0006-1053-3849")))
Description: Implements metafrontier production function models for
    estimating technical efficiencies and technology gaps for groups of
    firms that face different restrictions of a common underlying
    metatechnology (group-specific technologies in the sense of Battese,
    Rao, and O'Donnell, 2004). Supports both stochastic frontier
    analysis (SFA) and data envelopment analysis (DEA) based
    metafrontiers. Includes the deterministic metafrontier of Battese,
    Rao, and O'Donnell (2004) <doi:10.1023/B:PROD.0000012454.06094.29>,
    the stochastic metafrontier of Huang, Huang, and Liu (2014)
    <doi:10.1007/s11123-014-0402-2>, and the metafrontier Malmquist
    productivity index of O'Donnell, Rao, and Battese (2008)
    <doi:10.1007/s00181-007-0119-4>. The deterministic metafrontier can
    be identified by either the minimum sum of absolute deviations (LP)
    or the minimum sum of squared deviations (QP) criterion. Additional
    features include panel SFA with time-varying inefficiency, bootstrap
    confidence intervals for technology gap ratios, a DEA poolability
    permutation test, latent class metafrontier estimation via the EM
    algorithm, Murphy-Topel corrected standard errors, convergence
    diagnostics, import of pre-fitted models from external estimation
    engines ('sfaR', 'frontier', 'Benchmarking'), and 'ggplot2'
    visualisation methods.
License: GPL (>= 3)
Encoding: UTF-8
RoxygenNote: 7.3.3
Depends: R (>= 4.0.0)
Imports: stats, graphics, grDevices, Formula, numDeriv, lpSolveAPI,
        methods
Suggests: testthat (>= 3.0.0), knitr, rmarkdown, sfaR, frontier,
        Benchmarking, quadprog, plm, ggplot2, parallel
VignetteBuilder: knitr
URL: https://github.com/iik1/metafrontier
BugReports: https://github.com/iik1/metafrontier/issues
Config/testthat/edition: 3
NeedsCompilation: no
Packaged: 2026-07-15 10:39:15 UTC; enstad
Author: Erik Enstad [aut, cre] (ORCID: <https://orcid.org/0009-0006-1053-3849>)
Maintainer: Erik Enstad <erik.enstad@nhh.no>
Repository: CRAN
Date/Publication: 2026-07-15 12:00:02 UTC
Built: R 4.5.2; ; 2026-07-15 12:59:55 UTC; unix
