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BayesSplineUR: Bayesian Unit Root Test for AR(1) Model with Trend Approximated by Linear Spline Function

Performs Bayesian unit root testing for autoregressive time series models with non-linear trend components approximated by linear spline functions, as proposed by Kumar et al. (2020) <doi:10.19139/soic-2310-5070-786>. The package 'BayesSplineUR' computes posterior odds ratios, Bayes factors, and posterior probabilities for the unit root hypothesis against trend-stationary alternatives in models with linear spline trends or maintained polynomial trends as developed by Chaturvedi and Kumar (2005) <doi:10.1016/j.spl.2005.04.044>. Includes automatic knot selection using information criteria (AIC/BIC) and theoretical foundations for Bayesian unit root testing under structural breaks and maintained trends drawing from Schotman and van Dijk (1991) <doi:10.1016/0304-4076(91)90038-F>, Phillips and Perron (1988) <doi:10.1093/biomet/75.2.335>, Ouliaris et al. (1988) <doi:10.1007/978-94-009-2953-1_10>, and Perron (1989) <doi:10.2307/1913683>.

Version: 0.1.0
Depends: R (≥ 3.5.0)
Imports: stats, graphics
Suggests: knitr, rmarkdown, testthat (≥ 3.0.0)
Published: 2026-08-06
DOI: 10.32614/CRAN.package.BayesSplineUR (may not be active yet)
Author: Shikhar Tyagi ORCID iD [aut, cre], Arvind Pandey [aut], Bhupendra Singh [aut], Vrijesh Tripathi [aut]
Maintainer: Shikhar Tyagi <shikhar1093tyagi at gmail.com>
License: GPL (≥ 3)
NeedsCompilation: no
Citation: BayesSplineUR citation info
CRAN checks: BayesSplineUR results

Documentation:

Reference manual: BayesSplineUR.html , BayesSplineUR.pdf
Vignettes: Bayesian Unit Root Testing with Linear Spline and Polynomial Trends (source, R code)

Downloads:

Package source: BayesSplineUR_0.1.0.tar.gz
Windows binaries: r-devel: not available, r-release: BayesSplineUR_0.1.0.zip, r-oldrel: not available
macOS binaries: r-release (arm64): BayesSplineUR_0.1.0.tgz, r-oldrel (arm64): BayesSplineUR_0.1.0.tgz, r-release (x86_64): BayesSplineUR_0.1.0.tgz, r-oldrel (x86_64): BayesSplineUR_0.1.0.tgz

Linking:

Please use the canonical form https://CRAN.R-project.org/package=BayesSplineUR to link to this page.

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.