Colossus
"Risk Model Regression and Analysis with Complex Non-Linear Models"
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.
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CRAN Check Status
Show all 13 flavors
| Flavor | Status |
|---|---|
| r-devel-linux-x86_64-debian-clang | OK |
| r-devel-linux-x86_64-debian-gcc | OK |
| r-devel-linux-x86_64-fedora-clang | OK |
| r-devel-linux-x86_64-fedora-gcc | OK |
| r-devel-windows-x86_64 | OK |
| r-oldrel-macos-arm64 | OK |
| r-oldrel-macos-x86_64 | OK |
| r-oldrel-windows-x86_64 | OK |
| r-patched-linux-x86_64 | OK |
| r-release-linux-x86_64 | OK |
| r-release-macos-arm64 | OK |
| r-release-macos-x86_64 | OK |
| r-release-windows-x86_64 | OK |
Check History
OK 12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Apr 25, 2026
ERROR 9 OK · 3 NOTE · 0 WARNING · 2 ERROR · 0 FAILURE Apr 18, 2026
tests
Running ‘spelling.R’
Running ‘testthat.R’ [110s/239s]
Running the tests in ‘tests/testthat.R’ failed.
Complete output:
> # This file is part of the standard setup for testthat.
> # It is recommended that you do not modify it.
> #
> # Where
...[truncated]...
171:3'): Improve Ratio test ────────────────────────
Expected `val$"p value"` to equal 0.5319362.
Differences:
`actual`: 0.10
`expected`: 0.53
[ FAIL 83 | WARN 12 | SKIP 15 | PASS 777 ]
Error:
! Test failures.
Execution halted
whether package can be installed
Installation failed. See 'd:/Rcompile/CRANpkg/local/4.6/Colossus.Rcheck/00install.out' for details.
installed package size
installed size is 105.8Mb
sub-directories of 1Mb or more:
doc 1.7Mb
libs 103.5Mb
installed package size
installed size is 110.1Mb
sub-directories of 1Mb or more:
doc 1.7Mb
libs 107.8Mb
installed package size
installed size is 5.4Mb
sub-directories of 1Mb or more:
doc 1.7Mb
libs 3.1Mb
NOTE 11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026
installed package size
installed size is 105.8Mb
sub-directories of 1Mb or more:
doc 1.7Mb
libs 103.5Mb
installed package size
installed size is 109.2Mb
sub-directories of 1Mb or more:
doc 1.7Mb
libs 106.9Mb
installed package size
installed size is 5.4Mb
sub-directories of 1Mb or more:
doc 1.7Mb
libs 3.1Mb