Package: ssym
Type: Package
Title: Fitting Semi-Parametric log-Symmetric Regression Models
Version: 1.5.8
Date: 2023-04-21
Encoding: UTF-8
Author: Luis Hernando Vanegas <hvanegasp@gmail.com> and Gilberto A.
        Paula
Maintainer: Luis Hernando Vanegas <hvanegasp@gmail.com>
Description: Set of tools to fit a semi-parametric regression model
        suitable for analysis of data sets in which the response
        variable is continuous, strictly positive, asymmetric and
        possibly, censored. Under this setup, both the median and the
        skewness of the response variable distribution are explicitly
        modeled by using semi-parametric functions, whose
        non-parametric components may be approximated by natural cubic
        splines or P-splines. Supported distributions for the model
        error include log-normal, log-Student-t, log-power-exponential,
        log-hyperbolic, log-contaminated-normal, log-slash,
        Birnbaum-Saunders and Birnbaum-Saunders-t distributions.
License: GPL-2 | GPL-3
Depends: GIGrvg, numDeriv, normalp, Formula, survival
Imports: stats, grDevices, sandwich, graphics, methods, utils
Suggests: NISTnls, gam, sn, MASS
Packaged: 2026-07-03 08:16:56 UTC; root
NeedsCompilation: no
RoxygenNote: 7.2.3
Repository: https://cran.r-universe.dev
Date/Publication: 2023-04-21 23:50:12 UTC
RemoteUrl: https://github.com/cran/ssym
RemoteRef: HEAD
RemoteSha: f292480b0eaf0ee6395dc1d0ebfdc5856f8985bd