nadir

0.0.1

Super Learning with Flexible Formulas

0packages depend

1.2Kdownloads / year

40.9%test coverage

13/13checks pass

Overview

About

Maintained by Christian TestaFirst published 2026-02-201 releasesCRAN page ↗GitHub ↗

A functional programming based implementation of the super learner algorithm with an emphasis on supporting the use of formulas to specify learners. This approach offers several improvements compared to past implementations including the ability to easily use random-effects specified in formulas (like y ~ (age | strata) + ...) and construction of new learners is as simple as writing and passing a new function. The super learner algorithm was originally described in van der Laan et al. (2007) https://biostats.bepress.com/ucbbiostat/paper222/.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("nadir", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("ctesta01/nadir")

Development version from ctesta01/nadir. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-nadir

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-nadir

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-nadir

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 6.6 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.14

40.9%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 1,625 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 98%
References docs: 0%

Downloads

1.2K

CRAN downloads in the past year

Rank #20,518 · ~3/day · ~98/mo

Releases R versions

Daily download trend is not available in this view yet.

19130 days

59090 days

1.2K1 year

Compare downloads with other packages →

Also on38 r2u37 autocran

Repository

GitHub ↗ ctesta01/nadir

6Stars

1Forks

16Open issues

0Open PRs

0Releases

123Commits

1Contributors

cross-validationensemble-learningmachine-learningr-packageregression

123 commits · Last activity 2026-04-07 · 0% stars, 30d

Stars over time

2025-03-04 · 22026-07-07 · 6

Repository practices

Upstream repositoryBeta

3 development-tooling and community-health practices detected across 3 families in the upstream repository

Checks run against github.com/ctesta01/nadir on 2026-07-19.

Continuous integration (1)

GitHub Actions

CRAN release process (1)

cran-comments.md

Docs source (1)

README.Rmd

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

23 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.2.0

Imports (20)

dplyr earth future future.apply gbm glmnet hal9001 lifecycle lme4methodsmgcvnnetnnls origami randomForest ranger tibble tidyr VGAM xgboost

LinkingTo (0)

none

Suggests (8)

MASSggplot2 knitr palmerpenguins rmarkdownsurvivaltestthat withr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Code Composition

R 4,133 (62%)Rd 2,410 (36%)Vignettes 153 (2%)

Code characteristics

Object systems

S31

Cyclomatic complexity: 3.0 median / 35 max
Test cases: 12 / 0.14 per code line

Test coverage

Line coverage

41%

Expression

41.8%

Tests / Examples

40.9% / 77% ex

Functions

51 40 exported

Complexity

4.2 avg / 35 max

Call network

51 nodes / 13 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

51 functions

Function	Cyclo	Coverage
add_screener exp	3	0%
compare_learners exp	4	0%
cv_character_and_factors_schema exp	16	0%
cv_super_learner exp	5	0%
df_to_survival_stacked exp	8	0%
lnr_glm_density exp	2	0%

People & History

People (2)

Maintainer (1)

Christian Testa

Author, Maintainer

Authors (2)

Christian Testa

Author, Maintainer

Nima Hejazi

Thesis advisor, Author

Package Timeline

1 release. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
0.0.1Latest
2026-03-10 · current release
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2026-02-20
Total releases: 1 / 1 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 4.2.0
Download size: 1.4 MB
Installed size: not tracked yet
With dependencies: not tracked yet

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