qshap

1.0.1

Fast Calculation of Feature Contributions in Boosting Trees

0packages depend

1.5Kdownloads / year

–test coverage

13/13checks 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")

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

pak::pak("catstats/Q-SHAP_R")

Development version from catstats/Q-SHAP_R. Requires the pak package.

Release

# one-time r2u setup for Ubuntu (noble)

curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash

# then install

sudo apt install r-cran-qshap

Fast Ubuntu binaries via r2u (no compilation). Run the setup once per machine.

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

sudo dnf copr enable iucar/cran

sudo dnf install R-CRAN-qshap

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

sudo zypper install R-qshap

RPMs auto-built from CRAN on openSUSE OBS.

Health

CRAN checks

13OK

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

None

Vignettes

README

Dependencies · direct

Check history

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

Downloads

1.5K

CRAN downloads in the past year

Rank #10,853 · ~4/day · ~121/mo

qshap Releases R versions

Daily download trend is not available in this view yet.

25530 days

98590 days

1.5K1 year

Compare downloads with other packages →

Also on155 r2u2 autocran

Source & community

GitHub ↗

Repository stars, issues, and contributor activity are not tracked yet.

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

Reverse dependencies

0direct

–indirect (not tracked)

Nothing depends on this yet.

Code & Tests

Code Composition

R 2,761 (59%)Rd 1,018 (22%)C++ 787 (17%)C 114 (2%)

Test coverage

Line coverage

–

Expression

–

Tests / Examples

–

Functions

78 5 exported

Complexity

4.9 avg / 40 max

Call network

78 nodes / 56 edges

Test coverage has not been measured for this package yet; nodes fall back to a neutral fill.

Call graph

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Lowest coverage

Per-function coverage is not measured for this package yet.

People & History

People (3)

Maintainer (1)

Zhongli Jiang

Author, Maintainer

Authors (3)

Zhongli Jiang

Author, Maintainer

Steven He

Author

Dabao Zhang

Author

Release 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