Package: Colossus
Type: Package
Title: "Risk Model Regression and Analysis with Complex Non-Linear
        Models"
Version: 1.5.5
Authors@R: c(
    person("Eric", "King-Giunta", email="egiunta@ksu.edu", role=c("aut", "cre"), comment = c(ORCID = "0000-0002-1577-766X")),
    person("Amir", "Bahadori", role=c("ctb"), comment = c(ORCID = "0000-0002-4589-105X")),
    person("Dan", "Andresen", role=c("ctb"), comment = c(ORCID = "0000-0003-2345-6695")),
    person("Linda", "Walsh", role=c("ctb"), comment = c(ORCID = "0000-0001-7399-9191")),
    person("Benjamin", "French", role=c("ctb"), comment = c(ORCID = "0000-0001-9265-5378")),
    person("Lawrence", "Dauer", role=c("ctb"), comment = c(ORCID = "0000-0002-5629-8462")),
    person("John", "Boice Jr", role=c("ctb"), comment = c(ORCID = "0000-0002-8755-1299")),
    person("Kansas State University", role=c("cph")),
    person("NASA", role=c("fnd")),
    person("NCRP", role=c("fnd")),
    person("NRC", role=c("fnd"))
    )
URL: https://ericgiunta.github.io/Colossus/,
        https://github.com/ericgiunta/Colossus
BugReports: https://github.com/ericgiunta/Colossus/issues
Description: Performs survival analysis using general non-linear
        models. Risk models can be the sum or product of terms. Each
        term is the product of exponential/linear functions of
        covariates. Additionally sub-terms can be defined as a sum of
        exponential, linear threshold, and step functions. Cox
        Proportional hazards
        <https://en.wikipedia.org/wiki/Proportional_hazards_model>,
        Poisson <https://en.wikipedia.org/wiki/Poisson_regression>, and
        Fine-Gray competing risks
        <https://www.publichealth.columbia.edu/research/population-health-methods/competing-risk-analysis>
        regression are supported. This work was sponsored by NASA
        Grants 80NSSC19M0161 and 80NSSC23M0129 through a subcontract
        from the National Council on Radiation Protection and
        Measurements (NCRP). The computing for this project was
        performed on the Beocat Research Cluster at Kansas State
        University, which is funded in part by NSF grants CNS-1006860,
        EPS-1006860, EPS-0919443, ACI-1440548, CHE-1726332, and NIH
        P20GM113109.
License: GPL (>= 3)
Imports: Rcpp, data.table, parallel, stats, utils, rlang, methods,
        callr, stringr, processx, dplyr, tibble, lubridate
LinkingTo: Rcpp, RcppEigen, testthat
SystemRequirements: make, C++17
Encoding: UTF-8
Roxygen: list(markdown = TRUE)
Suggests: knitr, rmarkdown, testthat, pandoc, spelling, survival,
        splines, ggplot2
Config/testthat/edition: 3
VignetteBuilder: knitr
Language: en-US
Biarch: TRUE
NeedsCompilation: yes
Packaged: 2026-06-25 17:21:22 UTC; root
Author: Eric King-Giunta [aut, cre] (ORCID:
        <https://orcid.org/0000-0002-1577-766X>), Amir Bahadori [ctb]
        (ORCID: <https://orcid.org/0000-0002-4589-105X>), Dan Andresen
        [ctb] (ORCID: <https://orcid.org/0000-0003-2345-6695>), Linda
        Walsh [ctb] (ORCID: <https://orcid.org/0000-0001-7399-9191>),
        Benjamin French [ctb] (ORCID:
        <https://orcid.org/0000-0001-9265-5378>), Lawrence Dauer [ctb]
        (ORCID: <https://orcid.org/0000-0002-5629-8462>), John Boice Jr
        [ctb] (ORCID: <https://orcid.org/0000-0002-8755-1299>), Kansas
        State University [cph], NASA [fnd], NCRP [fnd], NRC [fnd]
Maintainer: Eric King-Giunta <egiunta@ksu.edu>
Config/roxygen2/version: 8.0.0
Config/pak/sysreqs: cmake make libicu-dev libuv1-dev
Repository: https://ericgiunta.r-universe.dev
Date/Publication: 2026-06-25 15:56:31 UTC
RemoteUrl: https://github.com/ericgiunta/colossus
RemoteRef: HEAD
RemoteSha: 819eaba9ef1e898975b8deb824d8b74021ec5770