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smoothbp: Hierarchical Piecewise Regression with Smoothed Change-Points

Fits Bayesian hierarchical piecewise regression models with multiple logistic-smoothed change-points. Non-linear parameters (change-point locations and transition sharpness) and linear parameters can each be conditioned on covariates and factors via flexible design matrices. A random-intercept structure is supported for any parameter. Spike-and-slab regularization is supported for selecting the number of breakpoints. Posterior inference uses a Metropolis-within-Gibbs sampler implemented in 'Rust' for speed. Methods are based on the smooth transition piecewise regression model of Bacon and Watts (1971) <doi:10.2307/2334389> and variable selection spike-and-slab priors of Kuo and Mallick (1998) <https://www.jstor.org/stable/25053023>.

Version: 0.2.1
Depends: R (≥ 4.2)
Imports: posterior, ggplot2, stats, bridgesampling, loo, bayesplot
Suggests: testthat (≥ 3.0.0), withr, knitr, rmarkdown, brms, mcp, dplyr, gt, tidyr, scales, rjags
Published: 2026-06-01
DOI: 10.32614/CRAN.package.smoothbp (may not be active yet)
Author: Aidan D Bindoff ORCID iD [aut, cre]
Maintainer: Aidan D Bindoff <aidan.bindoff at utas.edu.au>
BugReports: https://github.com/ABindoff/smoothbp/issues
License: MIT + file LICENSE
URL: https://github.com/ABindoff/smoothbp
NeedsCompilation: yes
SystemRequirements: Cargo (Rust's package manager), rustc >= 1.65.0
Materials: README, NEWS
CRAN checks: smoothbp results [issues need fixing before 2026-06-15]

Documentation:

Reference manual: smoothbp.html , smoothbp.pdf
Vignettes: Advanced Modeling with smoothbp (source, R code)
Validating smoothbp against brms and mcp (source, R code)
Getting Started with smoothbp (source, R code)
Intervention Analysis: RDD and Stepped-Wedge Designs (source, R code)
Breakpoint Selection with Spike-and-Slab Priors (source, R code)

Downloads:

Package source: smoothbp_0.2.1.tar.gz
Windows binaries: r-devel: not available, r-release: not available, r-oldrel: not available
macOS binaries: r-release (arm64): smoothbp_0.2.1.tgz, r-oldrel (arm64): smoothbp_0.2.1.tgz, r-release (x86_64): smoothbp_0.2.1.tgz, r-oldrel (x86_64): smoothbp_0.2.1.tgz

Linking:

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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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