conTree

0.3-1

Contrast Trees and Boosting

0packages depend

2.4Kdownloads / year

–test coverage

12/13checks pass

Overview

About

Maintained by Balasubramanian NarasimhanFirst published 2023-06-072 releasesCRAN page ↗GitHub ↗

Contrast trees represent a new approach for assessing the accuracy of many types of machine learning estimates that are not amenable to standard (cross) validation methods; see "Contrast trees and distribution boosting", Jerome H. Friedman (2020) doi:10.1073/pnas.1921562117. In situations where inaccuracies are detected, boosted contrast trees can often improve performance. Functions are provided to to build such trees in addition to a special case, distribution boosting, an assumption free method for estimating the full probability distribution of an outcome variable given any set of joint input predictor variable values.

Install

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

install.packages("conTree", 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("bnaras/conTree")

Development version from bnaras/conTree. 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-contree

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-conTree

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-conTree

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

Health

CRAN checks

1NOTE12OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-gcc

Slowest check: 1.4 min · r-oldrel-windows-x86_64

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 115 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 97%
Return-value docs: 100%
References docs: 13%

Downloads

2.4K

CRAN downloads in the past year

Rank #16,333 · ~7/day · ~201/mo

Releases R versions

Daily download trend is not available in this view yet.

22830 days

65690 days

2.4K1 year

Compare downloads with other packages →

Also on466 r2u1 autocran

Repository

GitHub ↗ bnaras/contree

0Stars

1Forks

0Open issues

0Open PRs

1Releases

32Commits

1Contributors

32 commits · Last activity 2023-11-21

Forks over time

2024-12-05 · 12026-07-07 · 1

Repository practices

Upstream repositoryBeta

2 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/bnaras/contree on 2026-07-30.

Continuous integration (1)

GitHub Actions

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

3 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.5

Imports (2)

statsgraphics

LinkingTo (0)

none

Suggests (3)

randomForest knitr rmarkdown

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (2)

Maintainer (1)

Balasubramanian Narasimhan

Author, Maintainer

Authors (2)

Balasubramanian Narasimhan

Author, Maintainer

Jerome Friedman

Author, Copyright holder

Jerome Friedman

Author, Copyright holder

Package Timeline

2 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
0.3-1Latest
2023-11-22 · current release · diff ↗
0.3
2023-06-07
R
R 4.3.0 released · 2023-04-21

Package metadata

First published: 2023-06-07
Total releases: 2 / 3 yrs
License: Apache License 2.0 OSI
Minimum R: ≥ 3.5
Bundled data: 1.7 MB / 3 files
Download size: 1.9 MB
Installed size: not tracked yet
With dependencies: not tracked yet

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