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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>.
| Version: | 1.0.1 |
| Imports: | Rcpp (≥ 1.0.14), xgboost (≥ 3.1.3.1), parallel, lightgbm, viridisLite, ggplot2, jsonlite, methods, progress |
| LinkingTo: | Rcpp, RcppEigen |
| Suggests: | shiny |
| Published: | 2026-05-04 |
| DOI: | 10.32614/CRAN.package.qshap |
| Author: | Steven He [aut], Zhongli Jiang [aut, cre], Dabao Zhang [aut] |
| Maintainer: | Zhongli Jiang <zhongli.jiang.stats at gmail.com> |
| BugReports: | https://github.com/catstats/Q-SHAP_R/issues |
| License: | GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
| URL: | https://github.com/catstats/Q-SHAP_R |
| NeedsCompilation: | yes |
| CRAN checks: | qshap results |
| Reference manual: | qshap.html , qshap.pdf |
| Package source: | qshap_1.0.1.tar.gz |
| Windows binaries: | r-devel: qshap_1.0.1.zip, r-release: qshap_1.0.1.zip, r-oldrel: qshap_1.0.1.zip |
| macOS binaries: | r-release (arm64): qshap_1.0.1.tgz, r-oldrel (arm64): qshap_1.0.1.tgz, r-release (x86_64): qshap_1.0.1.tgz, r-oldrel (x86_64): qshap_1.0.1.tgz |
| Old sources: | qshap archive |
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These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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