Package: pams
Type: Package
Title: Profile Analysis via Multidimensional Scaling
Version: 0.1.0
Date: 2026-03-22
Authors@R: c(
    person("Se-Kang", "Kim",
           email = "Se-Kang.Kim@bcm.edu",
           role  = c("aut", "cre"),
           comment = c(ORCID = "0000-0003-0928-3396")),
    person("Donghoh", "Kim",
           email = "donghoh.kim@gmail.com",
           role  = "aut",
           comment = c(ORCID = "0000-0001-7031-5639")))
Description: Implements Profile Analysis via Multidimensional Scaling (PAMS)
    for the identification of population-level core response profiles from
    cross-sectional and longitudinal person-score data. Each person profile
    is decomposed into a level component (the person mean) and a pattern
    component (ipsatized subscores). PAMS uses nonmetric multidimensional
    scaling via the SMACOF algorithm to identify a small number of core
    profiles that represent the central response patterns in a sample of any
    size. Bootstrap standard errors and bias-corrected and accelerated (BCa)
    confidence intervals for individual core profile coordinates are
    estimated, enabling significance testing of coordinates that is not
    available in other profile analysis methods such as cluster profile
    analysis or latent profile analysis. Person-level weights, R-squared
    values, and correlations with core profiles are also estimated, allowing
    individual profiles to be interpreted in terms of the core profile
    structure. PAMS can be applied to both cross-sectional data and
    longitudinal data, where core trajectory profiles describe how response
    patterns change over time. Methods are described in
    Kim and Kim (2024) <doi:10.20982/tqmp.20.3.p230>,
    de Leeuw and Mair (2009) <doi:10.18637/jss.v031.i03>,
    and Kruskal (1964) <doi:10.1007/BF02289565>.
License: MIT + file LICENSE
URL: https://github.com/sekangakim/pams
BugReports: https://github.com/sekangakim/pams/issues
Depends: R (>= 4.0.0)
Imports: smacof (>= 2.1.0)
Suggests: lmtest (>= 0.9.40), testthat (>= 3.0.0)
Encoding: UTF-8
RoxygenNote: 7.3.3
Config/testthat/edition: 3
NeedsCompilation: no
Packaged: 2026-03-27 03:48:18 UTC; sekangkim
Author: Se-Kang Kim [aut, cre] (ORCID: <https://orcid.org/0000-0003-0928-3396>),
  Donghoh Kim [aut] (ORCID: <https://orcid.org/0000-0001-7031-5639>)
Maintainer: Se-Kang Kim <Se-Kang.Kim@bcm.edu>
Repository: CRAN
Date/Publication: 2026-03-31 15:00:02 UTC
Built: R 4.5.2; ; 2026-03-31 17:49:05 UTC; unix
