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
Repository: https://iik1.r-universe.dev
Date/Publication: 2026-07-15 12:58:45 UTC
RemoteUrl: https://github.com/iik1/metafrontier
RemoteRef: HEAD
RemoteSha: 8e8d0b750d1fcaf11e5efc0747b780601e1ab92d
NeedsCompilation: no
Packaged: 2026-07-15 15:20:04 UTC; root
Author: Erik Enstad [aut, cre] (ORCID: <https://orcid.org/0009-0006-1053-3849>)
Maintainer: Erik Enstad <erik.enstad@nhh.no>