Package: afttest
Type: Package
Title: Model Diagnostics for Accelerated Failure Time Models
Version: 4.5.3
Date: 2026-4-4 EDT
Authors@R: c(
    person(given = "Woojung", family = "Bae", 
           email = "matt.woojung@gmail.com", 
           role = c("aut", "cre"),
           comment = c(ORCID = "0000-0001-6760-9900")),
    person(given = "Dongrak", family = "Choi", role = "aut",
           comment = c(ORCID = "0000-0003-3280-3329")),
    person(given = "Jun", family = "Yan", role = "aut",
           comment = c(ORCID = "0000-0003-4401-7296")),
    person(given = "Sangwook", family = "Kang", role = "aut",
           comment = c(ORCID = "0000-0003-2658-481X"))
  )
Maintainer: Woojung Bae <matt.woojung@gmail.com>
Description: A collection of model checking methods for semiparametric
        accelerated failure time (AFT) models under the rank-based
        approach. For the (computational) efficiency, Gehan's weight is
        used. It provides functions to verify whether the observed data
        fit the specific model assumptions such as a functional form of
        each covariate, a link function, and an omnibus test. The
        p-value offered in this package is based on the Kolmogorov-type
        supremum test and the variance of the proposed test statistics
        is estimated through the re-sampling method. Furthermore, a
        graphical technique to compare the shape of the observed
        residual to a number of the approximated realizations is
        provided. See the following references; A general
        model-checking procedure for semiparametric accelerated failure
        time models, Statistics and Computing, 34 (3), 117
        <doi:10.1007/s11222-024-10431-7>; Diagnostics for
        semiparametric accelerated failure time models with R package
        'afttest', arXiv, <doi:10.48550/arXiv.2511.09823>.
Depends: R (>= 3.4.0)
Imports: survival, aftgee, ggplot2, gridExtra
LinkingTo: Rcpp, RcppArmadillo
Suggests: knitr, rmarkdown, testthat (>= 3.0.0)
Config/testthat/edition: 3
License: GPL (>= 3)
URL: https://github.com/WooJungBae/afttest
BugReports: https://github.com/WooJungBae/afttest/issues
Encoding: UTF-8
Language: en-US
RoxygenNote: 7.3.2
Config/pak/sysreqs: libicu-dev
Repository: https://woojungbae.r-universe.dev
Date/Publication: 2026-04-05 00:46:22 UTC
RemoteUrl: https://github.com/woojungbae/afttest
RemoteRef: HEAD
RemoteSha: 0c06745b3dfc3ec3c36b818607ba49ec9a578e37
NeedsCompilation: yes
Packaged: 2026-07-04 09:02:03 UTC; root
Author: Woojung Bae [aut, cre] (ORCID: <https://orcid.org/0000-0001-6760-9900>),
  Dongrak Choi [aut] (ORCID: <https://orcid.org/0000-0003-3280-3329>),
  Jun Yan [aut] (ORCID: <https://orcid.org/0000-0003-4401-7296>),
  Sangwook Kang [aut] (ORCID: <https://orcid.org/0000-0003-2658-481X>)