qshap

1.0.1

Fast Calculation of Feature Contributions in Boosting Trees

0packages depend

1.6Kdownloads / year

–test coverage

12/13checks pass

Overview

About

Maintained by Zhongli JiangFirst published 2026-03-162 releasesCRAN page ↗GitHub ↗

Computes feature-specific R-squared (R2) contributions for boosting tree models using a Shapley-value-based decomposition of the total R-squared in polynomial time. Supports models fitted with 'XGBoost', 'LightGBM', and 'CatBoost', with optimized backend-specific implementations and cached tree summaries suitable for large-scale problems. Multiple visualization tools are included for interpreting and communicating feature contributions. The methodology is described in Jiang, Zhang, and Zhang (2025) doi:10.48550/arXiv.2407.03515. Optional 'CatBoost' support uses the R package 'catboost', which is not distributed on CRAN; installation instructions and released binaries are provided by the CatBoost project at https://catboost.ai/docs/en/concepts/r-installation.

Install

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

install.packages("qshap", 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("catstats/Q-SHAP_R")

Development version from catstats/Q-SHAP_R. 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-qshap

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-qshap

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-qshap

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: 3.9 min · r-release-macos-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
OK2026-04-22
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
13 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-17
5 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 100%
References docs: 3%

Downloads

1.6K

CRAN downloads in the past year

Rank #15,061 · ~4/day · ~133/mo

Releases R versions

Daily download trend is not available in this view yet.

16330 days

69790 days

1.6K1 year

Compare downloads with other packages →

Also on176 r2u

Repository

GitHub ↗ catstats/q-shap_r

2Stars

0Forks

0Open issues

0Open PRs

0Releases

187Commits

3Contributors

187 commits · Last activity 2026-07-18 · 0% stars, 30d

Stars over time

2026-04-10 · 12026-07-07 · 2

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/catstats/q-shap_r on 2026-07-31.

Continuous integration (1)

GitHub Actions

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

10 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (9)

Rcpp xgboostparallellightgbm viridisLite ggplot2 jsonlitemethodsprogress

LinkingTo (2)

Rcpp RcppEigen

Suggests (1)

shiny

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (3)

Maintainer (1)

Zhongli Jiang

Author, Maintainer

Authors (3)

Zhongli Jiang

Author, Maintainer

Steven He

Author

Dabao Zhang

Author

Package Timeline

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

1.0.1Latest
2026-05-04 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
1.0
2026-03-16
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2026-03-16
Total releases: 2 / 1 yrs
License: GPL (>= 2) OSI
Download size: not tracked yet
Installed size: not tracked yet
With dependencies: not tracked yet

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